+++ /dev/null
-/*
- * Synopsys DesignWare Multimedia Card Interface driver
- * (Based on NXP driver for lpc 31xx)
- *
- * Copyright (C) 2009 NXP Semiconductors
- * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
- * Copyright (C) 2014 - 2015 Fuzhou Rockchip Electronics Co.Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/blkdev.h>
-#include <linux/clk.h>
-#include <linux/debugfs.h>
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/dmaengine.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/delay.h>
-#include <linux/irq.h>
-#include <linux/suspend.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/mmc.h>
-#include <linux/mmc/sd.h>
-#include <linux/mmc/card.h>
-#include <linux/mmc/sdio.h>
-#include <linux/mmc/rk_mmc.h>
-#include <linux/bitops.h>
-#include <linux/regulator/consumer.h>
-#include <linux/workqueue.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/mmc/slot-gpio.h>
-#include <linux/clk-private.h>
-#include <linux/rockchip/cpu.h>
-#include <linux/rfkill-wlan.h>
-#include <linux/mfd/syscon.h>
-#include <linux/regmap.h>
-#include <linux/log2.h>
-#include <asm-generic/dma-mapping-common.h>
-#include "rk_sdmmc.h"
-#include "rk_sdmmc_dbg.h"
-#include <linux/regulator/rockchip_io_vol_domain.h>
-#include "../../clk/rockchip/clk-ops.h"
-#include <linux/rk_keys.h>
-
-#define RK_SDMMC_DRIVER_VERSION "Ver 2.00 2015-06-10"
-
-/* Common flag combinations */
-#define DW_MCI_DATA_ERROR_FLAGS (SDMMC_INT_DRTO | SDMMC_INT_DCRC | \
- SDMMC_INT_SBE | \
- SDMMC_INT_EBE)
-#define DW_MCI_CMD_ERROR_FLAGS (SDMMC_INT_RTO | SDMMC_INT_RCRC | \
- SDMMC_INT_RESP_ERR)
-#define DW_MCI_ERROR_FLAGS (DW_MCI_DATA_ERROR_FLAGS | \
- DW_MCI_CMD_ERROR_FLAGS | SDMMC_INT_HLE)
-#define DW_MCI_SEND_STATUS 1
-#define DW_MCI_RECV_STATUS 2
-#define DW_MCI_DMA_THRESHOLD 16
-#define DW_MCI_FREQ_MAX 50000000 /* unit: HZ */
-#define DW_MCI_FREQ_MIN 300000 /* unit: HZ */
-
-/* Max is 250ms showed in Spec */
-#define SDMMC_DATA_TIMEOUT_SD 500
-#define SDMMC_DATA_TIMEOUT_SDIO 250
-#define SDMMC_DATA_TIMEOUT_EMMC 2500
-#define SDMMC_CMD_RTO_MAX_HOLD 200
-#define SDMMC_WAIT_FOR_UNBUSY 2500
-
-#define DW_REGS_SIZE (0x0098 + 4)
-#define DW_REGS_NUM (0x0098 / 4)
-
-#ifdef CONFIG_MMC_DW_IDMAC
-#define IDMAC_INT_CLR (SDMMC_IDMAC_INT_AI | SDMMC_IDMAC_INT_NI | \
- SDMMC_IDMAC_INT_CES | SDMMC_IDMAC_INT_DU | \
- SDMMC_IDMAC_INT_FBE | SDMMC_IDMAC_INT_RI | \
- SDMMC_IDMAC_INT_TI)
-
-struct idmac_desc {
- u32 des0; /* Control Descriptor */
-#define IDMAC_DES0_DIC BIT(1)
-#define IDMAC_DES0_LD BIT(2)
-#define IDMAC_DES0_FD BIT(3)
-#define IDMAC_DES0_CH BIT(4)
-#define IDMAC_DES0_ER BIT(5)
-#define IDMAC_DES0_CES BIT(30)
-#define IDMAC_DES0_OWN BIT(31)
-
- u32 des1; /* Buffer sizes */
-#define IDMAC_SET_BUFFER1_SIZE(d, s) \
- ((d)->des1 = ((d)->des1 & 0x03ffe000) | ((s) & 0x1fff))
-
- u32 des2; /* buffer 1 physical address */
-
- u32 des3; /* buffer 2 physical address */
-};
-#endif /* CONFIG_MMC_DW_IDMAC */
-
-
-static inline bool dw_mci_fifo_reset(struct dw_mci *host);
-static inline bool dw_mci_ctrl_all_reset(struct dw_mci *host);
-static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset);
-static void dw_mci_disable_low_power(struct dw_mci_slot *slot);
-
-#if defined(CONFIG_DEBUG_FS)
-static int dw_mci_req_show(struct seq_file *s, void *v)
-{
- struct dw_mci_slot *slot = s->private;
- struct mmc_request *mrq;
- struct mmc_command *cmd;
- struct mmc_command *stop;
- struct mmc_data *data;
-
- /* Make sure we get a consistent snapshot */
- spin_lock_bh(&slot->host->lock);
- mrq = slot->mrq;
-
- if (mrq) {
- cmd = mrq->cmd;
- data = mrq->data;
- stop = mrq->stop;
-
- if (cmd)
- seq_printf(s,
- "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
- cmd->opcode, cmd->arg, cmd->flags,
- cmd->resp[0], cmd->resp[1], cmd->resp[2],
- cmd->resp[2], cmd->error);
- if (data)
- seq_printf(s, "DATA %u / %u * %u flg %x err %d\n",
- data->bytes_xfered, data->blocks,
- data->blksz, data->flags, data->error);
- if (stop)
- seq_printf(s,
- "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
- stop->opcode, stop->arg, stop->flags,
- stop->resp[0], stop->resp[1], stop->resp[2],
- stop->resp[2], stop->error);
- }
-
- spin_unlock_bh(&slot->host->lock);
-
- return 0;
-}
-
-static int dw_mci_req_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dw_mci_req_show, inode->i_private);
-}
-
-static const struct file_operations dw_mci_req_fops = {
- .owner = THIS_MODULE,
- .open = dw_mci_req_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int dw_mci_regs_show(struct seq_file *s, void *v)
-{
- seq_printf(s, "STATUS:\t0x%08x\n", SDMMC_STATUS);
- seq_printf(s, "RINTSTS:\t0x%08x\n", SDMMC_RINTSTS);
- seq_printf(s, "CMD:\t0x%08x\n", SDMMC_CMD);
- seq_printf(s, "CTRL:\t0x%08x\n", SDMMC_CTRL);
- seq_printf(s, "INTMASK:\t0x%08x\n", SDMMC_INTMASK);
- seq_printf(s, "CLKENA:\t0x%08x\n", SDMMC_CLKENA);
-
- return 0;
-}
-
-static int dw_mci_regs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dw_mci_regs_show, inode->i_private);
-}
-
-static const struct file_operations dw_mci_regs_fops = {
- .owner = THIS_MODULE,
- .open = dw_mci_regs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static void dw_mci_init_debugfs(struct dw_mci_slot *slot)
-{
- struct mmc_host *mmc = slot->mmc;
- struct dw_mci *host = slot->host;
- struct dentry *root;
- struct dentry *node;
-
- root = mmc->debugfs_root;
- if (!root)
- return;
-
- node = debugfs_create_file("regs", S_IRUSR, root, host,
- &dw_mci_regs_fops);
- if (!node)
- goto err;
-
- node = debugfs_create_file("req", S_IRUSR, root, slot,
- &dw_mci_req_fops);
- if (!node)
- goto err;
-
- node = debugfs_create_u32("state", S_IRUSR, root, (u32 *)&host->state);
- if (!node)
- goto err;
-
- node = debugfs_create_x32("pending_events", S_IRUSR, root,
- (u32 *)&host->pending_events);
- if (!node)
- goto err;
-
- node = debugfs_create_x32("completed_events", S_IRUSR, root,
- (u32 *)&host->completed_events);
- if (!node)
- goto err;
-
- return;
-
-err:
- dev_err(&mmc->class_dev, "failed to initialize debugfs for slot\n");
-}
-#endif /* defined(CONFIG_DEBUG_FS) */
-
-static void dw_mci_set_timeout(struct dw_mci *host)
-{
- /* timeout (maximum) */
- mci_writel(host, TMOUT, 0xffffffff);
-}
-
-static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd)
-{
- struct mmc_data *data;
- struct dw_mci_slot *slot = mmc_priv(mmc);
- const struct dw_mci_drv_data *drv_data = slot->host->drv_data;
- u32 cmdr;
- cmd->error = -EINPROGRESS;
-
- cmdr = cmd->opcode;
-
- if (cmdr == MMC_STOP_TRANSMISSION)
- cmdr |= SDMMC_CMD_STOP;
- else
- cmdr |= SDMMC_CMD_PRV_DAT_WAIT;
-
- if (cmd->flags & MMC_RSP_PRESENT) {
- /* We expect a response, so set this bit */
- cmdr |= SDMMC_CMD_RESP_EXP;
- if (cmd->flags & MMC_RSP_136)
- cmdr |= SDMMC_CMD_RESP_LONG;
- }
-
- if (cmd->flags & MMC_RSP_CRC)
- cmdr |= SDMMC_CMD_RESP_CRC;
-
- data = cmd->data;
- if (data) {
- cmdr |= SDMMC_CMD_DAT_EXP;
- if (data->flags & MMC_DATA_STREAM)
- cmdr |= SDMMC_CMD_STRM_MODE;
- if (data->flags & MMC_DATA_WRITE)
- cmdr |= SDMMC_CMD_DAT_WR;
- }
-
- if (drv_data && drv_data->prepare_command)
- drv_data->prepare_command(slot->host, &cmdr);
-
- return cmdr;
-}
-
-static void dw_mci_start_command(struct dw_mci *host,
- struct mmc_command *cmd, u32 cmd_flags)
-{
- struct dw_mci_slot *slot = host->slot[0];
-
- host->pre_cmd = host->cmd;
- host->cmd = cmd;
- dev_vdbg(host->dev,
- "start command: ARGR=0x%08x CMDR=0x%08x\n",
- cmd->arg, cmd_flags);
-
- if(SD_SWITCH_VOLTAGE == cmd->opcode){
- /*confirm non-low-power mode*/
- mci_writel(host, CMDARG, 0);
- dw_mci_disable_low_power(slot);
-
- MMC_DBG_INFO_FUNC(host->mmc,"Line%d..%s before start cmd=11,[%s]",
- __LINE__, __FUNCTION__,mmc_hostname(host->mmc));
-
- cmd_flags |= SDMMC_CMD_VOLT_SWITCH;
- }
-
- mci_writel(host, CMDARG, cmd->arg);
- wmb();
-
- /* Fix the value to 1 in current soc */
- if(host->mmc->hold_reg_flag)
- cmd_flags |= SDMMC_CMD_USE_HOLD_REG;
-
- mci_writel(host, CMD, cmd_flags | SDMMC_CMD_START);
- wmb();
-}
-
-static void send_stop_cmd(struct dw_mci *host, struct mmc_data *data)
-{
- dw_mci_start_command(host, data->stop, host->stop_cmdr);
-}
-
-/* DMA interface functions */
-static void dw_mci_stop_dma(struct dw_mci *host)
-{
- if (host->using_dma) {
- /* Fixme: No need to terminate edma, may cause flush op */
- if(!(cpu_is_rk3036() || cpu_is_rk312x()))
- host->dma_ops->stop(host);
- host->dma_ops->cleanup(host);
- }
-
- /* Data transfer was stopped by the interrupt handler */
- set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
-}
-
-static int dw_mci_get_dma_dir(struct mmc_data *data)
-{
- if (data->flags & MMC_DATA_WRITE)
- return DMA_TO_DEVICE;
- else
- return DMA_FROM_DEVICE;
-}
-
-#ifdef CONFIG_MMC_DW_IDMAC
-static void dw_mci_dma_cleanup(struct dw_mci *host)
-{
- struct mmc_data *data = host->data;
-
- if (data)
- if (!data->host_cookie)
- dma_unmap_sg(host->dev,
- data->sg,
- data->sg_len,
- dw_mci_get_dma_dir(data));
-}
-
-static void dw_mci_idmac_reset(struct dw_mci *host)
-{
- u32 bmod = mci_readl(host, BMOD);
- /* Software reset of DMA */
- bmod |= SDMMC_IDMAC_SWRESET;
- mci_writel(host, BMOD, bmod);
-}
-
-static void dw_mci_idmac_stop_dma(struct dw_mci *host)
-{
- u32 temp;
-
- /* Disable and reset the IDMAC interface */
- temp = mci_readl(host, CTRL);
- temp &= ~SDMMC_CTRL_USE_IDMAC;
- temp |= SDMMC_CTRL_DMA_RESET;
- mci_writel(host, CTRL, temp);
-
- /* Stop the IDMAC running */
- temp = mci_readl(host, BMOD);
- temp &= ~(SDMMC_IDMAC_ENABLE | SDMMC_IDMAC_FB);
- temp |= SDMMC_IDMAC_SWRESET;
- mci_writel(host, BMOD, temp);
-}
-
-static void dw_mci_idmac_complete_dma(void *arg)
-{
- struct dw_mci *host = arg;
- struct mmc_data *data = host->data;
-
- dev_vdbg(host->dev, "DMA complete\n");
-
- host->dma_ops->cleanup(host);
-
- /*
- * If the card was removed, data will be NULL. No point in trying to
- * send the stop command or waiting for NBUSY in this case.
- */
- if(data){
- set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
- tasklet_schedule(&host->tasklet);
- }
-}
-
-static void dw_mci_translate_sglist(struct dw_mci *host, struct mmc_data *data,
- unsigned int sg_len)
-{
- int i;
- struct idmac_desc *desc = host->sg_cpu;
-
- for (i = 0; i < sg_len; i++, desc++) {
- unsigned int length = sg_dma_len(&data->sg[i]);
- u32 mem_addr = sg_dma_address(&data->sg[i]);
-
- /* Set the OWN bit and disable interrupts for this descriptor */
- desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC | IDMAC_DES0_CH;
-
- /* Buffer length */
- IDMAC_SET_BUFFER1_SIZE(desc, length);
-
- /* Physical address to DMA to/from */
- desc->des2 = mem_addr;
- }
-
- /* Set first descriptor */
- desc = host->sg_cpu;
- desc->des0 |= IDMAC_DES0_FD;
-
- /* Set last descriptor */
- desc = host->sg_cpu + (i - 1) * sizeof(struct idmac_desc);
- desc->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
- desc->des0 |= IDMAC_DES0_LD;
-
- wmb();
-}
-
-static void dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len)
-{
- u32 temp;
-
- dw_mci_translate_sglist(host, host->data, sg_len);
-
- /* Select IDMAC interface */
- temp = mci_readl(host, CTRL);
- temp |= SDMMC_CTRL_USE_IDMAC;
- mci_writel(host, CTRL, temp);
-
- wmb();
-
- /* Enable the IDMAC */
- temp = mci_readl(host, BMOD);
- temp |= SDMMC_IDMAC_ENABLE | SDMMC_IDMAC_FB;
- mci_writel(host, BMOD, temp);
-
- /* Start it running */
- mci_writel(host, PLDMND, 1);
-}
-
-static int dw_mci_idmac_init(struct dw_mci *host)
-{
- struct idmac_desc *p;
- int i;
-
- /* Number of descriptors in the ring buffer */
- host->ring_size = PAGE_SIZE / sizeof(struct idmac_desc);
-
- /* Forward link the descriptor list */
- for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++) {
- p->des3 = host->sg_dma + (sizeof(struct idmac_desc) * (i + 1));
- p->des1 = 0;
- }
- /* Set the last descriptor as the end-of-ring descriptor */
- p->des3 = host->sg_dma;
- p->des0 = IDMAC_DES0_ER;
-
- dw_mci_idmac_reset(host);
-
- /* Mask out interrupts - get Tx & Rx complete only */
- mci_writel(host, IDSTS, IDMAC_INT_CLR);
- mci_writel(host, IDINTEN, SDMMC_IDMAC_INT_NI | SDMMC_IDMAC_INT_RI |
- SDMMC_IDMAC_INT_TI);
-
- /* Set the descriptor base address */
- mci_writel(host, DBADDR, host->sg_dma);
- return 0;
-}
-
-static const struct dw_mci_dma_ops dw_mci_idmac_ops = {
- .init = dw_mci_idmac_init,
- .start = dw_mci_idmac_start_dma,
- .stop = dw_mci_idmac_stop_dma,
- .complete = dw_mci_idmac_complete_dma,
- .cleanup = dw_mci_dma_cleanup,
-};
-
-
-static void dw_mci_edma_cleanup(struct dw_mci *host)
-{
- struct mmc_data *data = host->data;
-
- if (data)
- if (!data->host_cookie)
- dma_unmap_sg(host->dev,
- data->sg, data->sg_len,
- dw_mci_get_dma_dir(data));
-}
-
-static void dw_mci_edmac_stop_dma(struct dw_mci *host)
-{
- dmaengine_terminate_all(host->dms->ch);
-}
-
-static void dw_mci_edmac_complete_dma(void *arg)
-{
- struct dw_mci *host = arg;
- struct mmc_data *data = host->data;
-
- dev_vdbg(host->dev, "DMA complete\n");
-
- if(data)
- if(data->flags & MMC_DATA_READ)
- /* Invalidate cache after read */
- dma_sync_sg_for_cpu(mmc_dev(host->mmc), data->sg,
- data->sg_len, DMA_FROM_DEVICE);
-
- host->dma_ops->cleanup(host);
-
- /*
- * If the card was removed, data will be NULL. No point in trying to
- * send the stop command or waiting for NBUSY in this case.
- */
- if (data) {
- set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
- tasklet_schedule(&host->tasklet);
- }
-}
-
-static void dw_mci_edmac_start_dma(struct dw_mci *host, unsigned int sg_len)
-{
- struct dma_slave_config slave_config;
- struct dma_async_tx_descriptor *desc = NULL;
- struct scatterlist *sgl = host->data->sg;
- const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
- u32 sg_elems = host->data->sg_len;
- u32 fifoth_val, mburst;
- u32 burst_limit = 0;
- u32 idx, rx_wmark, tx_wmark;
- int ret = 0;
-
- /* Set external dma config: burst size, burst width*/
- slave_config.dst_addr = (dma_addr_t)(host->phy_regs + host->data_offset);
- slave_config.src_addr = slave_config.dst_addr;
- slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
- slave_config.src_addr_width = slave_config.dst_addr_width;
-
- /* Match FIFO dma burst MSIZE with external dma config*/
- fifoth_val = mci_readl(host, FIFOTH);
- mburst = mszs[(fifoth_val >> 28) & 0x7];
-
- /* Edmac limit burst to 16, but work around for rk3036 to 8 */
- if (unlikely(cpu_is_rk3036()))
- burst_limit = 8;
- else
- burst_limit = 16;
-
- if (mburst > burst_limit) {
- mburst = burst_limit;
- idx = (ilog2(mburst) > 0) ? (ilog2(mburst) - 1) : 0;
-
- rx_wmark = mszs[idx] - 1;
- tx_wmark = (host->fifo_depth) / 2;
- fifoth_val = SDMMC_SET_FIFOTH(idx, rx_wmark, tx_wmark);
-
- mci_writel(host, FIFOTH, fifoth_val);
- }
-
- slave_config.dst_maxburst = mburst;
- slave_config.src_maxburst = slave_config.dst_maxburst;
-
- if(host->data->flags & MMC_DATA_WRITE){
- slave_config.direction = DMA_MEM_TO_DEV;
- ret = dmaengine_slave_config(host->dms->ch, &slave_config);
- if(ret){
- dev_err(host->dev,
- "Error in dw_mci edmac write configuration.\n");
- return;
- }
-
- desc = dmaengine_prep_slave_sg(host->dms->ch, sgl, sg_len,
- DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
- if (!desc) {
- dev_err(host->dev,
- "Cannot prepare slave write sg the dw_mci edmac!\n");
- return;
- }
-
- /* Set dw_mci_edmac_complete_dma as callback */
- desc->callback = dw_mci_edmac_complete_dma;
- desc->callback_param = (void *)host;
- dmaengine_submit(desc);
-
- /* Flush cache before write */
- dma_sync_sg_for_device(mmc_dev(host->mmc), sgl,
- sg_elems, DMA_TO_DEVICE);
- dma_async_issue_pending(host->dms->ch);
- } else {
- /* MMC_DATA_READ*/
- slave_config.direction = DMA_DEV_TO_MEM;
- ret = dmaengine_slave_config(host->dms->ch, &slave_config);
- if (ret) {
- dev_err(host->dev,
- "Error in dw_mci edmac read configuration.\n");
- return;
- }
- desc = dmaengine_prep_slave_sg(host->dms->ch, sgl, sg_len,
- DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
- if (!desc) {
- dev_err(host->dev,
- "Cannot prepare slave read sg for the dw_mci edmac!\n");
- return;
- }
- /* set dw_mci_edmac_complete_dma as callback */
- desc->callback = dw_mci_edmac_complete_dma;
- desc->callback_param = (void *)host;
- dmaengine_submit(desc);
- dma_async_issue_pending(host->dms->ch);
- }
-}
-
-static int dw_mci_edmac_init(struct dw_mci *host)
-{
- int ret = 0;
-
- /* Request external dma channel, SHOULD decide chn in dts */
- host->dms = NULL;
- host->dms = (struct dw_mci_dma_slave *)kzalloc
- (sizeof(struct dw_mci_dma_slave), GFP_KERNEL);
- if (NULL == host->dms) {
- dev_err(host->dev, "No enough memory to alloc dms.\n");
- return -ENOMEM;
- }
-
- host->dms->ch = dma_request_slave_channel(host->dev, "dw_mci");
- if (!host->dms->ch) {
- dev_err(host->dev,
- "Failed to get external DMA channel\n");
- kfree(host->dms);
- host->dms = NULL;
- return -ENXIO;
- }
-
- return ret;
-}
-
-static void dw_mci_edmac_exit(struct dw_mci *host)
-{
- if (NULL != host->dms) {
- if (NULL != host->dms->ch) {
- dma_release_channel(host->dms->ch);
- host->dms->ch = NULL;
- }
- kfree(host->dms);
- host->dms = NULL;
- }
-}
-
-static const struct dw_mci_dma_ops dw_mci_edmac_ops = {
- .init = dw_mci_edmac_init,
- .exit = dw_mci_edmac_exit,
- .start = dw_mci_edmac_start_dma,
- .stop = dw_mci_edmac_stop_dma,
- .complete = dw_mci_edmac_complete_dma,
- .cleanup = dw_mci_edma_cleanup,
-};
-#endif /* CONFIG_MMC_DW_IDMAC */
-
-static struct dma_attrs dw_mci_direct_attrs;
-
-static int dw_mci_pre_dma_transfer(struct dw_mci *host,
- struct mmc_data *data,
- bool next)
-{
- struct scatterlist *sg;
- unsigned int i, sg_len;
-#ifdef CONFIG_MMC_DW_SKIP_CACHE_OP
- struct dma_attrs *attrs;
-#endif
-
- if (!next && data->host_cookie)
- return data->host_cookie;
-
- /*
- * We don't do DMA on "complex" transfers, i.e. with
- * non-word-aligned buffers or lengths. Also, we don't bother
- * with all the DMA setup overhead for short transfers.
- */
- if (data->blocks * data->blksz < DW_MCI_DMA_THRESHOLD)
- return -EINVAL;
-
- if (data->blksz & 3)
- return -EINVAL;
-
- for_each_sg(data->sg, sg, data->sg_len, i) {
- if (sg->offset & 3 || sg->length & 3)
- return -EINVAL;
- }
-#ifdef CONFIG_MMC_DW_SKIP_CACHE_OP
- attrs = (data->flags & MMC_DATA_DIRECT) ? &dw_mci_direct_attrs : NULL;
- sg_len = dma_map_sg_attrs(host->dev,
- data->sg,
- data->sg_len,
- dw_mci_get_dma_dir(data), attrs);
-#else
-
- sg_len = dma_map_sg(host->dev,
- data->sg,
- data->sg_len,
- dw_mci_get_dma_dir(data));
-#endif
- if (sg_len == 0)
- return -EINVAL;
-
- if (next)
- data->host_cookie = sg_len;
-
- return sg_len;
-}
-
-static void dw_mci_pre_req(struct mmc_host *mmc,
- struct mmc_request *mrq,
- bool is_first_req)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct mmc_data *data = mrq->data;
-
- if (!slot->host->use_dma || !data)
- return;
-
- if (data->host_cookie) {
- data->host_cookie = 0;
- return;
- }
-
- if (dw_mci_pre_dma_transfer(slot->host, mrq->data, 1) < 0)
- data->host_cookie = 0;
-}
-
-static void dw_mci_post_req(struct mmc_host *mmc,
- struct mmc_request *mrq,
- int err)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct mmc_data *data = mrq->data;
-
- if (!slot->host->use_dma || !data)
- return;
-
- if (data->host_cookie)
- dma_unmap_sg(slot->host->dev,
- data->sg,
- data->sg_len,
- dw_mci_get_dma_dir(data));
- data->host_cookie = 0;
-}
-
-static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data)
-{
-#ifdef CONFIG_MMC_DW_IDMAC
- unsigned int blksz = data->blksz;
- const u32 mszs[] = {1, 4, 8, 16, 32, 64, 128, 256};
- u32 fifo_width = 1 << host->data_shift;
- u32 blksz_depth = blksz / fifo_width, fifoth_val;
- u32 msize = 0, rx_wmark = 1, tx_wmark, tx_wmark_invers;
- int idx = (sizeof(mszs) / sizeof(mszs[0])) - 1;
-
- tx_wmark = (host->fifo_depth) / 2;
- tx_wmark_invers = host->fifo_depth - tx_wmark;
-
- /*
- * MSIZE is '1',
- * if blksz is not a multiple of the FIFO width
- */
- if (blksz % fifo_width) {
- msize = 0;
- rx_wmark = 1;
- goto done;
- }
-
- do {
- if (!((blksz_depth % mszs[idx]) ||
- (tx_wmark_invers % mszs[idx]))) {
- msize = idx;
- rx_wmark = mszs[idx] - 1;
- break;
- }
- } while (--idx > 0);
- /*
- * If idx is '0', it won't be tried
- * Thus, initial values are uesed
- */
-done:
- fifoth_val = SDMMC_SET_FIFOTH(msize, rx_wmark, tx_wmark);
- mci_writel(host, FIFOTH, fifoth_val);
-
-#endif
-}
-
-static void dw_mci_ctrl_rd_thld(struct dw_mci *host, struct mmc_data *data)
-{
- unsigned int blksz = data->blksz;
- u32 blksz_depth, fifo_depth;
- u16 thld_size;
-
- WARN_ON(!(data->flags & MMC_DATA_READ));
-
- if (host->timing != MMC_TIMING_MMC_HS200 &&
- host->timing != MMC_TIMING_UHS_SDR104)
- goto disable;
-
- blksz_depth = blksz / (1 << host->data_shift);
- fifo_depth = host->fifo_depth;
-
- if (blksz_depth > fifo_depth)
- goto disable;
-
- /*
- * If (blksz_depth) >= (fifo_depth >> 1), should be 'thld_size <= blksz'
- * If (blksz_depth) < (fifo_depth >> 1), should be thld_size = blksz
- * Currently just choose blksz.
- */
- thld_size = blksz;
- mci_writel(host, CDTHRCTL, SDMMC_SET_RD_THLD(thld_size, 1));
- return;
-
-disable:
- mci_writel(host, CDTHRCTL, SDMMC_SET_RD_THLD(0, 0));
-}
-
-static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
-{
- int sg_len;
- unsigned long flags;
- u32 temp;
-
- host->using_dma = 0;
-
- /* If we don't have a channel, we can't do DMA */
- if (!host->use_dma)
- return -ENODEV;
-
- sg_len = dw_mci_pre_dma_transfer(host, data, 0);
- if (sg_len < 0) {
- /* Fixme: No need terminate edma, may cause flush op */
- if(!(cpu_is_rk3036() || cpu_is_rk312x()))
- host->dma_ops->stop(host);
- return sg_len;
- }
-
- host->using_dma = 1;
-
- dev_vdbg(host->dev,
- "sd sg_cpu: %#lx sg_dma: %#lx sg_len: %d\n",
- (unsigned long)host->sg_cpu, (unsigned long)host->sg_dma,
- sg_len);
-
- /*
- * Decide the MSIZE and RX/TX Watermark.
- * If current block size is same with previous size,
- * no need to update fifoth.
- */
- if (host->prev_blksz != data->blksz)
- dw_mci_adjust_fifoth(host, data);
-
- /* Reset DMA FIFO*/
- dw_mci_ctrl_reset(host, SDMMC_CTRL_DMA_RESET);
-
- /* Enable the DMA interface */
- temp = mci_readl(host, CTRL);
- temp |= SDMMC_CTRL_DMA_ENABLE;
- mci_writel(host, CTRL, temp);
-
- /* Disable RX/TX IRQs, let DMA handle it */
- spin_lock_irqsave(&host->slock, flags);
- temp = mci_readl(host, INTMASK);
- temp &= ~(SDMMC_INT_RXDR | SDMMC_INT_TXDR);
- mci_writel(host, INTMASK, temp);
- spin_unlock_irqrestore(&host->slock, flags);
-
- host->dma_ops->start(host, sg_len);
-
- return 0;
-}
-
-static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
-{
- u32 temp;
- unsigned long flag;
-
- data->error = -EINPROGRESS;
-
- //WARN_ON(host->data);
- host->sg = NULL;
- host->data = data;
-
- /* Reset FIFO*/
- dw_mci_ctrl_reset(host, SDMMC_CTRL_DMA_RESET);
-
- if (data->flags & MMC_DATA_READ) {
- host->dir_status = DW_MCI_RECV_STATUS;
- dw_mci_ctrl_rd_thld(host, data);
- } else {
- host->dir_status = DW_MCI_SEND_STATUS;
- }
-
- MMC_DBG_INFO_FUNC(host->mmc,
- "Dw_mci_submit_data, blocks = %d, blksz = %d [%s]",
- data->blocks, data->blksz, mmc_hostname(host->mmc));
-
- if (dw_mci_submit_data_dma(host, data)) {
- int flags = SG_MITER_ATOMIC;
- if (host->data->flags & MMC_DATA_READ)
- flags |= SG_MITER_TO_SG;
- else
- flags |= SG_MITER_FROM_SG;
-
- sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
- host->sg = data->sg;
- host->part_buf_start = 0;
- host->part_buf_count = 0;
-
- spin_lock_irqsave(&host->slock, flag);
- mci_writel(host, RINTSTS, SDMMC_INT_TXDR | SDMMC_INT_RXDR);
- temp = mci_readl(host, INTMASK);
- temp |= SDMMC_INT_TXDR | SDMMC_INT_RXDR;
- mci_writel(host, INTMASK, temp);
- spin_unlock_irqrestore(&host->slock, flag);
-
- temp = mci_readl(host, CTRL);
- temp &= ~SDMMC_CTRL_DMA_ENABLE;
- mci_writel(host, CTRL, temp);
-
- /*
- * Use the initial fifoth_val for PIO mode.
- * If next issued data may be transfered by DMA mode,
- * prev_blksz should be invalidated.
- */
- mci_writel(host, FIFOTH, host->fifoth_val);
- host->prev_blksz = 0;
- } else {
- /*
- * Keep the current block size.
- * It will be used to decide whether to update
- * fifoth register next time.
- */
- host->prev_blksz = data->blksz;
- }
-}
-
-static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg)
-{
- struct dw_mci *host = slot->host;
- unsigned long timeout = jiffies + msecs_to_jiffies(500);
- unsigned int cmd_status = 0;
-
-#ifdef SDMMC_WAIT_FOR_UNBUSY
- bool ret = true;
- timeout = jiffies + msecs_to_jiffies(SDMMC_WAIT_FOR_UNBUSY);
-
- if (test_bit(DW_MMC_CARD_PRESENT, &slot->flags)) {
- while (ret) {
- ret = time_before(jiffies, timeout);
- cmd_status = mci_readl(host, STATUS);
- if (!(cmd_status &
- (SDMMC_STAUTS_DATA_BUSY |
- SDMMC_STAUTS_MC_BUSY)))
- break;
- };
-
- if(false == ret)
- MMC_DBG_ERR_FUNC(host->mmc,
- "mci_send_cmd: wait for unbusy timeout! [%s]",
- mmc_hostname(host->mmc));
- }
-#endif
-
- mci_writel(host, CMDARG, arg);
- wmb();
- mci_writel(host, CMD, SDMMC_CMD_START | cmd);
- if(cmd & SDMMC_CMD_UPD_CLK)
- timeout = jiffies + msecs_to_jiffies(50);
- else
- timeout = jiffies + msecs_to_jiffies(500);
-
- while (time_before(jiffies, timeout)) {
- cmd_status = mci_readl(host, CMD);
- if (!(cmd_status & SDMMC_CMD_START))
- return;
- }
-
- dev_err(&slot->mmc->class_dev,
- "Timeout sending command (cmd %#x arg %#x status %#x)\n",
- cmd, arg, cmd_status);
-}
-
-static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
-{
- struct dw_mci *host = slot->host;
- unsigned int tempck,clock = slot->clock;
- u32 div;
- u32 clk_en_a;
- u32 sdio_int;
-
- MMC_DBG_INFO_FUNC(host->mmc,
- "%s: clock=%d, current_speed=%d, bus_hz=%d, forc=%d[%s]\n",
- __FUNCTION__, clock, host->current_speed, host->bus_hz,
- force_clkinit, mmc_hostname(host->mmc));
-
- if (!clock) {
- mci_writel(host, CLKENA, 0);
- #ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE
- if(host->svi_flags == 0)
- mci_send_cmd(slot, SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
- #else
- mci_send_cmd(slot, SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
- #endif
- } else if (clock != host->current_speed || force_clkinit) {
- div = host->bus_hz / clock;
- if (host->bus_hz % clock && host->bus_hz > clock)
- /*
- * move the + 1 after the divide to prevent
- * over-clocking the card.
- */
- div += 1;
-
- div = (host->bus_hz != clock) ? DIV_ROUND_UP(div, 2) : 0;
-
- if ((clock << div) != slot->__clk_old || force_clkinit) {
- tempck = div ? ((host->bus_hz / div) >> 1) :host->bus_hz;
- dev_info(&slot->mmc->class_dev,
- "Bus speed (slot %d) = %dHz (slot req %dHz, actual %dHZ div = %d)\n",
- slot->id, host->bus_hz, clock,
- tempck, div);
-
- host->set_speed = tempck;
- host->set_div = div;
- }
-
- /* disable clock */
- mci_writel(host, CLKENA, 0);
- mci_writel(host, CLKSRC, 0);
-
- /* inform CIU */
- mci_send_cmd(slot,
- SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
-
- if(clock <= 400*1000){
- MMC_DBG_BOOT_FUNC(host->mmc,
- "dw_mci_setup_bus: argue clk_mmc workaround out %dHz for init[%s]",
- clock * 2, mmc_hostname(host->mmc));
- /* clk_mmc will change parents to 24MHz xtal*/
- clk_set_rate(host->clk_mmc, clock * 2);
-
- div = 0;
- host->set_div = div;
- }
- else
- {
- MMC_DBG_BOOT_FUNC(host->mmc,
- "dw_mci_setup_bus: argue clk_mmc workaround out normal clock [%s]",
- mmc_hostname(host->mmc));
- if(div > 1)
- {
- MMC_DBG_ERR_FUNC(host->mmc,
- "dw_mci_setup_bus: div SHOULD NOT LARGER THAN ONE! [%s]",
- mmc_hostname(host->mmc));
- div = 1;
- host->set_div = div;
- host->bus_hz = host->set_speed * 2;
- MMC_DBG_BOOT_FUNC(host->mmc,
- "dw_mci_setup_bus: workaround div = %d, host->bus_hz = %d [%s]",
- div, host->bus_hz, mmc_hostname(host->mmc));
- }
- /* BUG may be here, come on, Linux BSP engineer looks!
- FIXME: HS-DDR eMMC, div SHOULD be ONE, but we here cannot fetch eMMC bus mode!!!!!!!!
- WRONG dts set clk = 50M, and calc div be zero. Controller denied this setting!
- some oops happened like that:
- mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0)
- rk_sdmmc: BOOT dw_mci_setup_bus: argue clk_mmc workaround out normal clock [mmc0]
- rk_sdmmc: BOOT Bus speed=50000000Hz,Bus width=8bits.[mmc0]
- mmc0: new high speed DDR MMC card at address 0001
- mmcblk0: mmc0:0001 M8G1GC 7.28 GiB
- ....
- mmcblk0: error -84 transferring data, sector 606208, nr 32, cmd response 0x900, card status 0xb00
- mmcblk0: retrying using single block read
- mmcblk0: error -110 sending status command, retrying
-
- We assume all eMMC in RK platform with 3.10 kernel, at least version 4.5
- */
- if ((div == 0) &&
- (host->mmc->caps & (MMC_CAP_1_8V_DDR | MMC_CAP_1_2V_DDR)) &&
- !(host->mmc->caps2 & MMC_CAP2_HS200)) {
- /* Fixup DDR MMC */
- div = 1;
- host->set_div = div;
- host->bus_hz = host->set_speed * 2;
- MMC_DBG_BOOT_FUNC(host->mmc,
- "dw_mci_setup_bus: workaround div = %d, host->bus_hz = %d [%s]",
- div, host->bus_hz, mmc_hostname(host->mmc));
- }
-
- if (host->verid < DW_MMC_240A)
- clk_set_rate(host->clk_mmc,(host->bus_hz));
- else
- clk_set_rate(host->clk_mmc,(host->bus_hz) * 2);
-
-
-
- }
-
- /* set clock to desired speed */
- mci_writel(host, CLKDIV, div);
-
- /* inform CIU */
- mci_send_cmd(slot,
- SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
-
- /* enable clock; only low power if no SDIO */
- clk_en_a = SDMMC_CLKEN_ENABLE << slot->id;
-
- if (host->verid < DW_MMC_240A)
- sdio_int = SDMMC_INT_SDIO(slot->id);
- else
- sdio_int = SDMMC_INT_SDIO((slot->id) + 8);
-
- if (!(mci_readl(host, INTMASK) & sdio_int))
- clk_en_a |= SDMMC_CLKEN_LOW_PWR << slot->id;
- mci_writel(host, CLKENA, clk_en_a);
-
- /* inform CIU */
- mci_send_cmd(slot,
- SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
- /* keep the clock with reflecting clock dividor */
- slot->__clk_old = clock << div;
- }
-
- host->current_speed = clock;
-
- if(slot->ctype != slot->pre_ctype)
- MMC_DBG_BOOT_FUNC(host->mmc,
- "Bus speed=%dHz,Bus width=%s.[%s]",
- host->set_speed,
- (slot->ctype == SDMMC_CTYPE_4BIT) ? "4bits" : "8bits",
- mmc_hostname(host->mmc));
-
- slot->pre_ctype = slot->ctype;
-
- /* Set the current slot bus width */
- mci_writel(host, CTYPE, (slot->ctype << slot->id));
-}
-
-extern struct mmc_card *this_card;
-static void dw_mci_wait_unbusy(struct dw_mci *host)
-{
- unsigned int timeout = SDMMC_DATA_TIMEOUT_SDIO;
- unsigned long time_loop;
- unsigned int status;
- unsigned int tmo = 300000;
- /* Secure erase flag */
- u32 se_flag = 0;
-
- MMC_DBG_INFO_FUNC(host->mmc,
- "dw_mci_wait_unbusy, status=0x%x ", mci_readl(host, STATUS));
-
- if (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_EMMC) {
- if (host->cmd && (host->cmd->opcode == MMC_ERASE) && this_card) {
- /* Special care for (secure)erase timeout calculation */
- if ((host->cmd->arg & (0x1 << 31)) == 1)
- se_flag = 0x1;
-
- if (((this_card->ext_csd.erase_group_def) & 0x1) == 1)
- se_flag ?
- (timeout = (this_card->ext_csd.hc_erase_timeout) *
- tmo * (this_card->ext_csd.sec_erase_mult)) :
- (timeout = (this_card->ext_csd.hc_erase_timeout) * tmo);
- }
-
- if(timeout < SDMMC_DATA_TIMEOUT_EMMC)
- timeout = SDMMC_DATA_TIMEOUT_EMMC;
- } else if (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD) {
- timeout = SDMMC_DATA_TIMEOUT_SD;
- }
-
- time_loop = jiffies + msecs_to_jiffies(timeout);
- do {
- status = mci_readl(host, STATUS);
- if (!(status & (SDMMC_STAUTS_DATA_BUSY | SDMMC_STAUTS_MC_BUSY)))
- break;
- } while (time_before(jiffies, time_loop));
-}
-
-#ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE
-/*
-* result:
-* 0--status is busy.
-* 1--status is unbusy.
-*/
-int dw_mci_card_busy(struct mmc_host *mmc)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
-
- MMC_DBG_INFO_FUNC(host->mmc, "dw_mci_card_busy: svi_flags = %d [%s]", \
- host->svi_flags, mmc_hostname(host->mmc));
-
- /* svi toggle*/
- if(host->svi_flags == 0){
- /*first svi*/
- host->svi_flags = 1;
- return host->svi_flags;
-
- }else{
- host->svi_flags = 0;
- return host->svi_flags;
- }
-
-
-}
-#endif
-static void __dw_mci_start_request(struct dw_mci *host,
- struct dw_mci_slot *slot,
- struct mmc_command *cmd)
-{
- struct mmc_request *mrq;
- struct mmc_data *data;
- u32 cmdflags;
-
- mrq = slot->mrq;
- if (host->pdata->select_slot)
- host->pdata->select_slot(slot->id);
-
- host->cur_slot = slot;
- host->mrq = mrq;
-
- dw_mci_wait_unbusy(host);
-
- host->pending_events = 0;
- host->completed_events = 0;
- host->data_status = 0;
- host->cmd_status = 0;
-
- data = cmd->data;
- if (data) {
- dw_mci_set_timeout(host);
- mci_writel(host, BYTCNT, data->blksz*data->blocks);
- mci_writel(host, BLKSIZ, data->blksz);
- }
-
- cmdflags = dw_mci_prepare_command(slot->mmc, cmd);
-
- /* this is the first command, send the initialization clock */
- if (test_and_clear_bit(DW_MMC_CARD_NEED_INIT, &slot->flags))
- cmdflags |= SDMMC_CMD_INIT;
-
- if (data) {
- dw_mci_submit_data(host, data);
- wmb();
- }
-
- dw_mci_start_command(host, cmd, cmdflags);
-
- if (mrq->stop)
- host->stop_cmdr = dw_mci_prepare_command(slot->mmc, mrq->stop);
-}
-
-static void dw_mci_start_request(struct dw_mci *host,
- struct dw_mci_slot *slot)
-{
- struct mmc_request *mrq = slot->mrq;
- struct mmc_command *cmd;
-
- MMC_DBG_INFO_FUNC(host->mmc,
- " Begin to start the new request. cmd=%d(arg=0x%x)[%s]",
- mrq->cmd->opcode, mrq->cmd->arg, mmc_hostname(host->mmc));
-
- cmd = mrq->sbc ? mrq->sbc : mrq->cmd;
- __dw_mci_start_request(host, slot, cmd);
-}
-
-/* must be called with host->lock held */
-static void dw_mci_queue_request(struct dw_mci *host, struct dw_mci_slot *slot,
- struct mmc_request *mrq)
-{
- dev_vdbg(&slot->mmc->class_dev, "queue request: state=%d\n",
- host->state);
-
- slot->mrq = mrq;
-
- if (host->state == STATE_IDLE) {
- host->state = STATE_SENDING_CMD;
- dw_mci_start_request(host, slot);
- } else {
- list_add_tail(&slot->queue_node, &host->queue);
- }
-}
-
-static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
-
- WARN_ON(slot->mrq);
-
- /*
- * The check for card presence and queueing of the request must be
- * atomic, otherwise the card could be removed in between and the
- * request wouldn't fail until another card was inserted.
- */
- spin_lock_bh(&host->lock);
-
- if (!test_bit(DW_MMC_CARD_PRESENT, &slot->flags)) {
- spin_unlock_bh(&host->lock);
- mrq->cmd->error = -ENOMEDIUM;
- MMC_DBG_CMD_FUNC(host->mmc, "%s: no card,so reqeuest done, cmd=%d [%s]",
- __FUNCTION__, mrq->cmd->opcode, mmc_hostname(host->mmc));
-
- mmc_request_done(mmc, mrq);
- return;
- }
-
- MMC_DBG_CMD_FUNC(host->mmc,
- "======>\n pull a new request from MMC-frame to dw_mci_queue. cmd=%d(arg=0x%x)[%s]",
- mrq->cmd->opcode, mrq->cmd->arg, mmc_hostname(host->mmc));
-
- dw_mci_queue_request(host, slot, mrq);
-
- spin_unlock_bh(&host->lock);
-}
-
-static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- #ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE
- struct dw_mci *host = slot->host;
- #endif
- const struct dw_mci_drv_data *drv_data = slot->host->drv_data;
- u32 regs;
-
- #ifdef SDMMC_WAIT_FOR_UNBUSY
- unsigned long time_loop;
- bool ret = true;
-
- #ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE
- if(host->svi_flags == 1)
- time_loop = jiffies + msecs_to_jiffies(SDMMC_DATA_TIMEOUT_SD);
- else
- time_loop = jiffies + msecs_to_jiffies(SDMMC_WAIT_FOR_UNBUSY);
- #else
- time_loop = jiffies + msecs_to_jiffies(SDMMC_WAIT_FOR_UNBUSY);
- #endif
-
- if(!test_bit(DW_MMC_CARD_PRESENT, &slot->flags)){
- printk("%d..%s: no card. [%s]\n", \
- __LINE__, __FUNCTION__, mmc_hostname(mmc));
- goto EXIT_POWER;
- }
-
- while (ret) {
- ret = time_before(jiffies, time_loop);
- regs = mci_readl(slot->host, STATUS);
- if (!(regs & (SDMMC_STAUTS_DATA_BUSY |
- SDMMC_STAUTS_MC_BUSY)))
- break;
- };
-
- if(false == ret)
- {
- printk("slot->flags = %lu ", slot->flags);
- #ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE
- if(host->svi_flags != 1)
- #endif
- dump_stack();
- printk("%s: wait for unbusy timeout....... STATUS = 0x%x [%s]\n",
- __FUNCTION__, regs, mmc_hostname(mmc));
- }
- #endif
-
- switch (ios->bus_width) {
- case MMC_BUS_WIDTH_4:
- slot->ctype = SDMMC_CTYPE_4BIT;
- break;
- case MMC_BUS_WIDTH_8:
- slot->ctype = SDMMC_CTYPE_8BIT;
- break;
- default:
- /* set default 1 bit mode */
- slot->ctype = SDMMC_CTYPE_1BIT;
- slot->pre_ctype = SDMMC_CTYPE_1BIT;
- }
-
- regs = mci_readl(slot->host, UHS_REG);
-
- /* DDR mode set */
- if (ios->timing == MMC_TIMING_UHS_DDR50)
- regs |= ((0x1 << slot->id) << 16);
- else
- regs &= ~((0x1 << slot->id) << 16);
-
- mci_writel(slot->host, UHS_REG, regs);
- slot->host->timing = ios->timing;
-
- /*
- * Use mirror of ios->clock to prevent race with mmc
- * core ios update when finding the minimum.
- */
- slot->clock = ios->clock;
-
- if (drv_data && drv_data->set_ios)
- drv_data->set_ios(slot->host, ios);
-
- /* Slot specific timing and width adjustment */
- dw_mci_setup_bus(slot, false);
- //return -EAGAIN;
-
-EXIT_POWER:
- switch (ios->power_mode) {
- case MMC_POWER_UP:
- /* Power up slot */
- set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags);
- if (slot->host->pdata->setpower)
- slot->host->pdata->setpower(slot->id, mmc->ocr_avail);
- regs = mci_readl(slot->host, PWREN);
- regs |= (1 << slot->id);
- mci_writel(slot->host, PWREN, regs);
- break;
- case MMC_POWER_OFF:
- /* Power down slot */
- if(slot->host->pdata->setpower)
- slot->host->pdata->setpower(slot->id, 0);
- regs = mci_readl(slot->host, PWREN);
- regs &= ~(1 << slot->id);
- mci_writel(slot->host, PWREN, regs);
- break;
- default:
- break;
- }
-}
-
-static int dw_mci_get_ro(struct mmc_host *mmc)
-{
- int read_only;
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci_board *brd = slot->host->pdata;
-
- /* Use platform get_ro function, else try on board write protect */
- if(slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT)
- read_only = 0;
- else if(brd->get_ro)
- read_only = brd->get_ro(slot->id);
- else if(gpio_is_valid(slot->wp_gpio))
- read_only = gpio_get_value(slot->wp_gpio);
- else
- read_only =
- mci_readl(slot->host, WRTPRT) & (1 << slot->id) ? 1 : 0;
-
- dev_dbg(&mmc->class_dev, "card is %s\n",
- read_only ? "read-only" : "read-write");
-
- return read_only;
-}
-
-static int dw_mci_set_sdio_status(struct mmc_host *mmc, int val)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
-
- if (!(mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO))
- return 0;
-
- spin_lock_bh(&host->lock);
-
- if(val)
- set_bit(DW_MMC_CARD_PRESENT, &slot->flags);
- else
- clear_bit(DW_MMC_CARD_PRESENT, &slot->flags);
-
- spin_unlock_bh(&host->lock);
-
- if (test_bit(DW_MMC_CARD_PRESENT, &slot->flags)) {
- if (__clk_is_enabled(host->hclk_mmc) == false)
- clk_prepare_enable(host->hclk_mmc);
- if (__clk_is_enabled(host->clk_mmc) == false)
- clk_prepare_enable(host->clk_mmc);
- } else {
- if (__clk_is_enabled(host->clk_mmc) == true)
- clk_disable_unprepare(slot->host->clk_mmc);
- if (__clk_is_enabled(host->hclk_mmc) == true)
- clk_disable_unprepare(slot->host->hclk_mmc);
- }
-
- mmc_detect_change(slot->mmc, 20);
- return 0;
-}
-
-
-
-static int dw_mci_get_cd(struct mmc_host *mmc)
-{
- int present;
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci_board *brd = slot->host->pdata;
- struct dw_mci *host = slot->host;
- int gpio_cd = mmc_gpio_get_cd(mmc);
- int force_jtag_bit, force_jtag_reg;
- int gpio_val;
- int irq;
-
- if ((soc_is_rk3126() || soc_is_rk3126b() || soc_is_rk3036()) &&
- (mmc->restrict_caps & RESTRICT_CARD_TYPE_SD)) {
- gpio_cd = slot->cd_gpio;
- irq = gpio_to_irq(gpio_cd);
- if (gpio_is_valid(gpio_cd)) {
- gpio_val = gpio_get_value(gpio_cd);
- if (soc_is_rk3036()) {
- force_jtag_bit = 11;
- force_jtag_reg = RK312X_GRF_SOC_CON0;
- } else if (soc_is_rk3126() || soc_is_rk3126b()) {
- force_jtag_reg = RK312X_GRF_SOC_CON0;
- force_jtag_bit = 8;
- }
- msleep(10);
- if (gpio_val == gpio_get_value(gpio_cd)) {
- gpio_cd = (gpio_val == 0 ? 1 : 0);
- if (gpio_cd == 0) {
- irq_set_irq_type(irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT);
- /* Enable force_jtag wihtout card in slot, ONLY for NCD-package */
- grf_writel((0x1 << (force_jtag_bit + 16)) | (1 << force_jtag_bit),
- force_jtag_reg);
- dw_mci_ctrl_all_reset(host);
- } else {
- irq_set_irq_type(irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT);
- /* Really card detected: SHOULD disable force_jtag */
- grf_writel((0x1 << (force_jtag_bit + 16)) | (0 << force_jtag_bit),
- force_jtag_reg);
- }
- } else {
- /* Jitter */
- gpio_val = gpio_get_value(gpio_cd);
- (gpio_val == 0) ?
- irq_set_irq_type(irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT) :
- irq_set_irq_type(irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT);
- return slot->last_detect_state;
- }
- } else {
- dev_err(host->dev, "dw_mci_get_cd: invalid gpio_cd!\n");
- }
- }
-
- if (mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO)
- return test_bit(DW_MMC_CARD_PRESENT, &slot->flags);
-
- /* Use platform get_cd function, else try onboard card detect */
- if (brd->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION)
- present = 1;
- else if (brd->get_cd)
- present = !brd->get_cd(slot->id);
- else if (!IS_ERR_VALUE(gpio_cd))
- present = gpio_cd;
- else
- present = ((mci_readl(slot->host, CDETECT) & (1 << slot->id))
- == 0) ? 1 : 0;
-
- spin_lock_bh(&host->lock);
- if (present) {
- set_bit(DW_MMC_CARD_PRESENT, &slot->flags);
- dev_dbg(&mmc->class_dev, "card is present\n");
- } else {
- clear_bit(DW_MMC_CARD_PRESENT, &slot->flags);
- dev_dbg(&mmc->class_dev, "card is not present\n");
- }
- spin_unlock_bh(&host->lock);
-
- return present;
-}
-
-
-/*
- * Dts Should caps emmc controller with poll-hw-reset
- */
-static void dw_mci_hw_reset(struct mmc_host *mmc)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
- u32 regs;
-
- #if 0
- u32 cmd_flags;
- unsigned long timeout;
- bool ret = true;
-
- /* (1) CMD12 to end any transfer in process */
- cmd_flags = SDMMC_CMD_STOP | SDMMC_CMD_RESP_CRC
- | SDMMC_CMD_RESP_EXP | MMC_STOP_TRANSMISSION;
-
- if(host->mmc->hold_reg_flag)
- cmd_flags |= SDMMC_CMD_USE_HOLD_REG;
- mci_writel(host, CMDARG, 0);
- wmb();
- mci_writel(host, CMD, cmd_flags | SDMMC_CMD_START);
- wmb();
- timeout = jiffies + msecs_to_jiffies(500);
- while(ret){
- ret = time_before(jiffies, timeout);
- if(!(mci_readl(host, CMD) & SDMMC_CMD_START))
- break;
- }
-
- if(false == ret)
- MMC_DBG_ERR_FUNC(host->mmc,
- "%s dw_mci_hw_reset: STOP_TRANSMISSION failed!!! [%s]\n",
- __func__, mmc_hostname(host->mmc));
-
- /* (2) wait DTO, even if no response is sent back by card */
- ret = true;
- timeout = jiffies + msecs_to_jiffies(5);
- while(ret){
- ret = time_before(jiffies, timeout);
- if(!(mci_readl(host, MINTSTS) & SDMMC_INT_DATA_OVER)){
- mci_writel(host, RINTSTS, SDMMC_INT_DATA_OVER);
- break;
- }
- }
- #endif
-
- /* (3) Reset following: DONNOT CHANGE RESET ORDER!*/
-
- /* Software reset - BMOD[0] for IDMA only */
- regs = mci_readl(host, BMOD);
- regs |= SDMMC_IDMAC_SWRESET;
- mci_writel(host, BMOD, regs);
- udelay(1); /* Auto cleared after 1 cycle, 1us is enough for hclk_mmc */
- regs = mci_readl(host, BMOD);
- if(regs & SDMMC_IDMAC_SWRESET)
- MMC_DBG_WARN_FUNC(host->mmc,
- "%s dw_mci_hw_reset: SDMMC_IDMAC_SWRESET failed!!! [%s]\n",
- __func__, mmc_hostname(host->mmc));
-
- /* DMA reset - CTRL[2] */
- regs = mci_readl(host, CTRL);
- regs |= SDMMC_CTRL_DMA_RESET;
- mci_writel(host, CTRL, regs);
- udelay(1); /* Auto cleared after 2 AHB clocks, 1us is enough plus mci_readl access */
- regs = mci_readl(host, CTRL);
- if(regs & SDMMC_CTRL_DMA_RESET)
- MMC_DBG_WARN_FUNC(host->mmc,
- "%s dw_mci_hw_reset: SDMMC_CTRL_DMA_RESET failed!!! [%s]\n",
- __func__, mmc_hostname(host->mmc));
-
- /* FIFO reset - CTRL[1] */
- regs = mci_readl(host, CTRL);
- regs |= SDMMC_CTRL_FIFO_RESET;
- mci_writel(host, CTRL, regs);
- mdelay(1); /* no timing limited, 1ms is random value */
- regs = mci_readl(host, CTRL);
- if(regs & SDMMC_CTRL_FIFO_RESET)
- MMC_DBG_WARN_FUNC(host->mmc,
- "%s dw_mci_hw_reset: SDMMC_CTRL_DMA_RESET failed!!! [%s]\n",
- __func__, mmc_hostname(host->mmc));
-
- /* (4) CARD_RESET
- According to eMMC spec
- tRstW >= 1us ; RST_n pulse width
- tRSCA >= 200us ; RST_n to Command time
- tRSTH >= 1us ; RST_n high period
- */
- mci_writel(slot->host, PWREN, 0x0);
- mci_writel(slot->host, RST_N, 0x0);
- dsb(sy);
- udelay(10); /* 10us for bad quality eMMc. */
-
- mci_writel(slot->host, PWREN, 0x1);
- mci_writel(slot->host, RST_N, 0x1);
- dsb(sy);
- usleep_range(500, 1000); /* at least 500(> 200us) */
-}
-
-/*
- * Disable lower power mode.
- *
- * Low power mode will stop the card clock when idle. According to the
- * description of the CLKENA register we should disable low power mode
- * for SDIO cards if we need SDIO interrupts to work.
- *
- * This function is fast if low power mode is already disabled.
- */
-static void dw_mci_disable_low_power(struct dw_mci_slot *slot)
-{
- struct dw_mci *host = slot->host;
- u32 clk_en_a;
- const u32 clken_low_pwr = SDMMC_CLKEN_LOW_PWR << slot->id;
-
- clk_en_a = mci_readl(host, CLKENA);
-
- if (clk_en_a & clken_low_pwr) {
- mci_writel(host, CLKENA, clk_en_a & ~clken_low_pwr);
- mci_send_cmd(slot, SDMMC_CMD_UPD_CLK |
- SDMMC_CMD_PRV_DAT_WAIT, 0);
- }
-}
-
-static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
- unsigned long flags;
- u32 int_mask;
- u32 sdio_int;
-
- spin_lock_irqsave(&host->slock, flags);
-
- /* Enable/disable Slot Specific SDIO interrupt */
- int_mask = mci_readl(host, INTMASK);
-
- if (host->verid < DW_MMC_240A)
- sdio_int = SDMMC_INT_SDIO(slot->id);
- else
- sdio_int = SDMMC_INT_SDIO((slot->id) + 8);
-
- if (enb) {
- /*
- * Turn off low power mode if it was enabled. This is a bit of
- * a heavy operation and we disable / enable IRQs a lot, so
- * we'll leave low power mode disabled and it will get
- * re-enabled again in dw_mci_setup_bus().
- */
- dw_mci_disable_low_power(slot);
-
- mci_writel(host, INTMASK,
- (int_mask | sdio_int));
- } else {
- mci_writel(host, INTMASK,
- (int_mask & ~sdio_int));
- }
-
- spin_unlock_irqrestore(&host->slock, flags);
-}
-
-#ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE
-enum{
- IO_DOMAIN_12 = 1200,
- IO_DOMAIN_18 = 1800,
- IO_DOMAIN_33 = 3300,
-};
-static void dw_mci_do_grf_io_domain_switch(struct dw_mci *host, u32 voltage)
-{
- switch(voltage){
- case IO_DOMAIN_33:
- voltage = 0;
- break;
- case IO_DOMAIN_18:
- voltage = 1;
- break;
- case IO_DOMAIN_12:
- MMC_DBG_ERR_FUNC(host->mmc,
- "%s : Not support io domain voltage [%s]\n",
- __FUNCTION__, mmc_hostname(host->mmc));
- break;
- default:
- MMC_DBG_ERR_FUNC(host->mmc,
- "%s : Err io domain voltage [%s]\n",
- __FUNCTION__, mmc_hostname(host->mmc));
- break;
- }
-
- if (cpu_is_rk3288()) {
- if(host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD)
- grf_writel((voltage << 7) | (1 << 23), RK3288_GRF_IO_VSEL);
- else
- return ;
- } else if (host->cid == DW_MCI_TYPE_RK3368) {
- if(host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD)
- regmap_write(host->grf, 0x900, (voltage << 6) | (1 << 22));
- else
- return;
- } else {
- MMC_DBG_ERR_FUNC(host->mmc,
- "%s : unknown chip [%s]\n",
- __FUNCTION__, mmc_hostname(host->mmc));
- }
-}
-
-static int dw_mci_do_start_signal_voltage_switch(struct dw_mci *host,
- struct mmc_ios *ios)
-{
- int ret;
- unsigned int value,uhs_reg;
-
- /*
- * Signal Voltage Switching is only applicable for Host Controllers
- * v3.00 and above.
- */
- if (host->verid < DW_MMC_240A)
- return 0;
-
- uhs_reg = mci_readl(host, UHS_REG);
- MMC_DBG_SW_VOL_FUNC(host->mmc, "%s: vol=%d.[%s]\n",
- __FUNCTION__, ios->signal_voltage, mmc_hostname(host->mmc));
-
- switch (ios->signal_voltage) {
- case MMC_SIGNAL_VOLTAGE_330:
- /* Set 1.8V Signal Enable in the Host Control2 register to 0 */
- if (host->vmmc) {
- if (cpu_is_rk3288())
- ret = io_domain_regulator_set_voltage(
- host->vmmc, 3300000, 3300000);
- else
- ret = regulator_set_voltage(host->vmmc,
- 3300000, 3300000);
-
- /* regulator_put(host->vmmc); */
- MMC_DBG_SW_VOL_FUNC(host->mmc,"%s =%dmV set 3.3 end, ret = %d\n",
- __func__, regulator_get_voltage(host->vmmc), ret);
- if (ret) {
- MMC_DBG_SW_VOL_FUNC(host->mmc,
- "%s: Switching to 3.3V signalling voltage "
- " failed\n", mmc_hostname(host->mmc));
- return -EIO;
- }
- dw_mci_do_grf_io_domain_switch(host, IO_DOMAIN_33);
- }
-
- MMC_DBG_SW_VOL_FUNC(host->mmc, "%s: [%s]\n",
- __FUNCTION__, mmc_hostname(host->mmc));
-
- /* set High-power mode */
- value = mci_readl(host, CLKENA);
- value &= ~SDMMC_CLKEN_LOW_PWR;
- mci_writel(host,CLKENA , value);
- /* SDMMC_UHS_REG */
- uhs_reg &= ~SDMMC_UHS_VOLT_REG_18;
- mci_writel(host,UHS_REG , uhs_reg);
-
- /* Wait for 5ms */
- usleep_range(5000, 5500);
-
- /* 3.3V regulator output should be stable within 5 ms */
- uhs_reg = mci_readl(host, UHS_REG);
- if( !(uhs_reg & SDMMC_UHS_VOLT_REG_18))
- return 0;
-
- MMC_DBG_SW_VOL_FUNC(host->mmc,
- "%s: 3.3V regulator output did not became stable\n",
- mmc_hostname(host->mmc));
-
- return -EAGAIN;
- case MMC_SIGNAL_VOLTAGE_180:
- if (host->vmmc) {
- if (cpu_is_rk3288())
- ret = io_domain_regulator_set_voltage(
- host->vmmc, 1800000, 1800000);
- else
- ret = regulator_set_voltage(
- host->vmmc, 1800000, 1800000);
- /* regulator_put(host->vmmc); */
- MMC_DBG_SW_VOL_FUNC(host->mmc,
- "%s =%dmV set 1.8end, ret=%d . \n",
- __func__, regulator_get_voltage(host->vmmc), ret);
- if (ret) {
- MMC_DBG_SW_VOL_FUNC(host->mmc,
- "%s: Switching to 1.8V signalling voltage "
- " failed\n", mmc_hostname(host->mmc));
- return -EIO;
- }
- dw_mci_do_grf_io_domain_switch(host, IO_DOMAIN_18);
- }
-
- /*
- * Enable 1.8V Signal Enable in the Host Control2
- * register
- */
- mci_writel(host,UHS_REG , uhs_reg | SDMMC_UHS_VOLT_REG_18);
-
- /* Wait for 5ms */
- usleep_range(5000, 5500);
- MMC_DBG_SW_VOL_FUNC(host->mmc, "%d..%s: .[%s]\n",__LINE__,
- __FUNCTION__, mmc_hostname(host->mmc));
-
- /* 1.8V regulator output should be stable within 5 ms */
- uhs_reg = mci_readl(host, UHS_REG);
- if (uhs_reg & SDMMC_UHS_VOLT_REG_18)
- return 0;
-
- MMC_DBG_SW_VOL_FUNC(host->mmc,
- "%s: 1.8V regulator output did not became stable\n",
- mmc_hostname(host->mmc));
-
- return -EAGAIN;
- case MMC_SIGNAL_VOLTAGE_120:
- if (host->vmmc) {
- if (cpu_is_rk3288())
- ret = io_domain_regulator_set_voltage(
- host->vmmc, 1200000, 1200000);
- else
- ret = regulator_set_voltage(host->vmmc,
- 1200000, 1200000);
- if (ret) {
- MMC_DBG_SW_VOL_FUNC(host->mmc,
- "%s: Switching to 1.2V signalling voltage "
- " failed\n", mmc_hostname(host->mmc));
- return -EIO;
- }
- }
- return 0;
- default:
- /* No signal voltage switch required */
- return 0;
- }
-}
-
-
-static int dw_mci_start_signal_voltage_switch(struct mmc_host *mmc,
- struct mmc_ios *ios)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
- int err;
-
- if (host->verid < DW_MMC_240A)
- return 0;
-
- err = dw_mci_do_start_signal_voltage_switch(host, ios);
- return err;
-}
-
-#endif
-
-static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
- const struct dw_mci_drv_data *drv_data = host->drv_data;
- struct dw_mci_tuning_data tuning_data;
- int err = -ENOSYS;
-
- /* Fixme: 3036/3126 doesn't support 1.8 io domain, no sense exe tuning */
- if(cpu_is_rk3036() || cpu_is_rk312x())
- return err;
-
- if (opcode == MMC_SEND_TUNING_BLOCK_HS200) {
- if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) {
- tuning_data.blk_pattern = tuning_blk_pattern_8bit;
- tuning_data.blksz = sizeof(tuning_blk_pattern_8bit);
- } else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) {
- tuning_data.blk_pattern = tuning_blk_pattern_4bit;
- tuning_data.blksz = sizeof(tuning_blk_pattern_4bit);
- } else {
- return -EINVAL;
- }
- } else if (opcode == MMC_SEND_TUNING_BLOCK) {
- tuning_data.blk_pattern = tuning_blk_pattern_4bit;
- tuning_data.blksz = sizeof(tuning_blk_pattern_4bit);
- } else {
- dev_err(host->dev,
- "Undefined command(%d) for tuning\n", opcode);
- return -EINVAL;
- }
-
- if (drv_data && drv_data->execute_tuning)
- err = drv_data->execute_tuning(slot, opcode, &tuning_data);
-
- return err;
-}
-
-static void dw_mci_post_tmo(struct mmc_host *mmc)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
- u32 i, regs, cmd_flags;
- u32 sdio_int;
- unsigned long timeout = 0;
- bool ret_timeout = true, is_retry = false;
- u32 opcode, offset;
-
- if (host->cur_slot->mrq->data)
- dw_mci_stop_dma(host);
-
- offset = host->cru_reset_offset;
- opcode = host->mrq->cmd->opcode;
- host->cur_slot->mrq = NULL;
- host->mrq = NULL;
- host->state = STATE_IDLE;
- host->data = NULL;
-
- if ((opcode == MMC_SEND_TUNING_BLOCK_HS200) ||
- (opcode == MMC_SEND_TUNING_BLOCK))
- return;
-
- printk("[%s] -- Timeout recovery procedure start --\n",
- mmc_hostname(host->mmc));
-
- /* unmask irq */
- mci_writel(host, INTMASK, 0x0);
-
-retry_stop:
- /* send stop cmd */
- mci_writel(host, CMDARG, 0);
- wmb();
- cmd_flags = SDMMC_CMD_STOP | SDMMC_CMD_RESP_CRC |
- SDMMC_CMD_RESP_EXP | MMC_STOP_TRANSMISSION;
-
- if (host->mmc->hold_reg_flag)
- cmd_flags |= SDMMC_CMD_USE_HOLD_REG;
-
- mci_writel(host, CMD, cmd_flags | SDMMC_CMD_START);
- wmb();
- timeout = jiffies + msecs_to_jiffies(10);
-
- while(ret_timeout) {
- ret_timeout = time_before(jiffies, timeout);
- if(!(mci_readl(host, CMD) & SDMMC_CMD_START))
- break;
- }
-
- if (false == ret_timeout) {
- MMC_DBG_ERR_FUNC(host->mmc, "stop recovery failed![%s]",
- mmc_hostname(host->mmc));
- if (host->cid == DW_MCI_TYPE_RK3368) {
- /* pd_peri mmc AHB bus software reset request */
- regmap_write(host->cru, host->cru_regsbase,
- (0x1<<offset)<<16 | (0x1 << offset));
- mdelay(1);
- regmap_write(host->cru, host->cru_regsbase,
- (0x1<<offset)<<16 | (0x0 << offset));
- } else {
- /* pd_peri mmc AHB bus software reset request */
- cru_writel(((0x1<<offset)<<16) | (0x1 << offset),
- host->cru_regsbase);
- mdelay(1);
- cru_writel(((0x1<<offset)<<16) | (0x0 << offset),
- host->cru_regsbase);
- }
- } else {
- if (!dw_mci_ctrl_all_reset(host))
- return;
- if (is_retry == true)
- goto recovery_end;
- }
-
-#ifdef CONFIG_MMC_DW_IDMAC
- if (!(cpu_is_rk3036() || cpu_is_rk312x()))
- if (host->use_dma && host->dma_ops->init)
- host->dma_ops->init(host);
-#endif
-
- /*
- * Restore the initial value at FIFOTH register
- * And Invalidate the prev_blksz with zero
- */
- mci_writel(host, FIFOTH, host->fifoth_val);
- host->prev_blksz = 0;
- mci_writel(host, TMOUT, 0xFFFFFFFF);
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- regs = SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER |
- SDMMC_INT_TXDR | SDMMC_INT_RXDR | SDMMC_INT_VSI |
- DW_MCI_ERROR_FLAGS;
- if (!(host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO))
- regs |= SDMMC_INT_CD;
-
- if ((host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO)) {
- if (host->verid < DW_MMC_240A)
- sdio_int = SDMMC_INT_SDIO(0);
- else
- sdio_int = SDMMC_INT_SDIO(8);
-
- if (mci_readl(host, INTMASK) & sdio_int)
- regs |= sdio_int;
- }
-
- mci_writel(host, INTMASK, regs);
- mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE);
- for (i = 0; i < host->num_slots; i++) {
- struct dw_mci_slot *slot = host->slot[i];
- if (!slot)
- continue;
- if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER) {
- dw_mci_set_ios(slot->mmc, &slot->mmc->ios);
- dw_mci_setup_bus(slot, true);
- }
- }
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- if (ret_timeout == false) {
- ret_timeout = true;
- is_retry = true;
- goto retry_stop;
- }
-
-recovery_end:
- printk("[%s] -- Timeout recovery procedure finished --\n",
- mmc_hostname(host->mmc));
-}
-
-static const struct mmc_host_ops dw_mci_ops = {
- .request = dw_mci_request,
- .pre_req = dw_mci_pre_req,
- .post_req = dw_mci_post_req,
- .set_ios = dw_mci_set_ios,
- .get_ro = dw_mci_get_ro,
- .get_cd = dw_mci_get_cd,
- .set_sdio_status = dw_mci_set_sdio_status,
- .hw_reset = dw_mci_hw_reset,
- .enable_sdio_irq = dw_mci_enable_sdio_irq,
- .execute_tuning = dw_mci_execute_tuning,
- .post_tmo = dw_mci_post_tmo,
- #ifdef CONFIG_MMC_DW_ROCKCHIP_SWITCH_VOLTAGE
- .start_signal_voltage_switch
- = dw_mci_start_signal_voltage_switch,
- .card_busy = dw_mci_card_busy,
- #endif
-};
-
-static void dw_mci_deal_data_end(struct dw_mci *host, struct mmc_request *mrq)
- __releases(&host->lock)
- __acquires(&host->lock)
-{
- if (DW_MCI_SEND_STATUS == host->dir_status){
- dw_mci_wait_unbusy(host);
- }
-}
-
-static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq)
- __releases(&host->lock)
- __acquires(&host->lock)
-{
- struct dw_mci_slot *slot;
- struct mmc_host *prev_mmc = host->cur_slot->mmc;
-
- //WARN_ON(host->cmd || host->data);
-
- dw_mci_deal_data_end(host, mrq);
-
- if(mrq->cmd)
- MMC_DBG_CMD_FUNC(host->mmc,
- " reqeust end--reqeuest done, cmd=%d, "
- "cmderr=%d, host->state=%d [%s]",
- mrq->cmd->opcode, mrq->cmd->error,
- host->state,mmc_hostname(host->mmc));
- if(mrq->data)
- MMC_DBG_CMD_FUNC(host->mmc,
- " reqeust end--reqeuest done, cmd=%d, "
- "dataerr=%d, host->state=%d [%s]",
- mrq->cmd->opcode,mrq->data->error,
- host->state, mmc_hostname(host->mmc));
-
- host->cur_slot->mrq = NULL;
- host->mrq = NULL;
- if (!list_empty(&host->queue)) {
- slot = list_entry(host->queue.next,
- struct dw_mci_slot, queue_node);
- list_del(&slot->queue_node);
- dev_vdbg(host->dev, "list not empty: %s is next\n",
- mmc_hostname(slot->mmc));
- host->state = STATE_SENDING_CMD;
- MMC_DBG_CMD_FUNC(host->mmc,
- " list is not empty. run the request in list. [%s]",
- mmc_hostname(host->mmc));
- dw_mci_start_request(host, slot);
- } else {
- dev_vdbg(host->dev, "list empty\n");
- host->state = STATE_IDLE;
- }
-
- spin_unlock(&host->lock);
- mmc_request_done(prev_mmc, mrq);
- spin_lock(&host->lock);
-}
-
-static void dw_mci_command_complete(struct dw_mci *host, struct mmc_command *cmd)
-{
- u32 status = host->cmd_status;
-
- host->cmd_status = 0;
-
- /* Read the response from the card (up to 16 bytes) */
- if (cmd->flags & MMC_RSP_PRESENT) {
- if (cmd->flags & MMC_RSP_136) {
- cmd->resp[3] = mci_readl(host, RESP0);
- cmd->resp[2] = mci_readl(host, RESP1);
- cmd->resp[1] = mci_readl(host, RESP2);
- cmd->resp[0] = mci_readl(host, RESP3);
-
- MMC_DBG_INFO_FUNC(host->mmc,
- "Command complete cmd=%d, "
- "resp[3]=0x%x, resp[2]=0x%x,resp[1]=0x%x,resp[0]=0x%x.[%s]",
- cmd->opcode,cmd->resp[3], cmd->resp[2], cmd->resp[1], cmd->resp[0],
- mmc_hostname(host->mmc));
- } else {
- cmd->resp[0] = mci_readl(host, RESP0);
- cmd->resp[1] = 0;
- cmd->resp[2] = 0;
- cmd->resp[3] = 0;
- MMC_DBG_INFO_FUNC(host->mmc,
- "Command complete cmd=%d,resp[0]=0x%x. [%s]",
- cmd->opcode, cmd->resp[0], mmc_hostname(host->mmc));
- }
- }
-
- if (status & SDMMC_INT_RTO)
- {
- if(host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO)
- host->cmd_rto += 1;
-
- cmd->error = -ETIMEDOUT;
- }else if ((cmd->flags & MMC_RSP_CRC) && (status & SDMMC_INT_RCRC)){
- cmd->error = -EILSEQ;
- }else if (status & SDMMC_INT_RESP_ERR){
- cmd->error = -EIO;
- }else{
- cmd->error = 0;
- }
-
- MMC_DBG_CMD_FUNC(host->mmc,
- "Command complete, cmd=%d,cmdError=%d [%s]",
- cmd->opcode, cmd->error, mmc_hostname(host->mmc));
-
- if (cmd->error) {
- if(MMC_SEND_STATUS != cmd->opcode)
- if(host->cmd_rto >= SDMMC_CMD_RTO_MAX_HOLD){
- MMC_DBG_CMD_FUNC(host->mmc,
- "Command complete, cmd=%d,cmdError=%d [%s]",
- cmd->opcode, cmd->error, mmc_hostname(host->mmc));
- host->cmd_rto = 0;
- }
-
- /* newer ip versions need a delay between retries */
- if (host->quirks & DW_MCI_QUIRK_RETRY_DELAY)
- mdelay(20);
- }
-}
-
-static void dw_mci_tasklet_func(unsigned long priv)
-{
- struct dw_mci *host = (struct dw_mci *)priv;
- struct dw_mci_slot *slot = mmc_priv(host->mmc);
- struct mmc_data *data;
- struct mmc_command *cmd;
- enum dw_mci_state state;
- enum dw_mci_state prev_state;
- u32 status, cmd_flags;
- unsigned long timeout = 0;
- bool ret = true;
-
- spin_lock(&host->lock);
-
- state = host->state;
- data = host->data;
-
- do {
- prev_state = state;
-
- switch (state) {
- case STATE_IDLE:
- break;
-
- case STATE_SENDING_CMD:
- if (!test_and_clear_bit(EVENT_CMD_COMPLETE,
- &host->pending_events))
- break;
-
- cmd = host->cmd;
- host->cmd = NULL;
- set_bit(EVENT_CMD_COMPLETE, &host->completed_events);
- dw_mci_command_complete(host, cmd);
- if (cmd == host->mrq->sbc && !cmd->error) {
- prev_state = state = STATE_SENDING_CMD;
- __dw_mci_start_request(host, host->cur_slot,
- host->mrq->cmd);
- goto unlock;
- }
-
- if (cmd->data && cmd->error) {
- dw_mci_stop_dma(host);
- #if 1
- if (data->stop) {
- send_stop_cmd(host, data);
- state = STATE_SENDING_STOP;
- break;
- }else{
- /* host->data = NULL; */
- }
- #else
- send_stop_abort(host, data);
- state = STATE_SENDING_STOP;
- break;
- #endif
- set_bit(EVENT_DATA_COMPLETE, &host->completed_events);
- }
-
- if (!host->mrq->data || cmd->error) {
- dw_mci_request_end(host, host->mrq);
- goto unlock;
- }
-
- prev_state = state = STATE_SENDING_DATA;
- /* fall through */
-
- case STATE_SENDING_DATA:
- if (test_and_clear_bit(EVENT_DATA_ERROR,
- &host->pending_events)) {
- dw_mci_stop_dma(host);
- #if 1
- if (data->stop){
- send_stop_cmd(host, data);
- }else{
- /*single block read/write, send stop cmd
- manually to prevent host controller halt*/
- MMC_DBG_INFO_FUNC(host->mmc,
- "%s status 1 0x%08x [%s]\n",
- __func__, mci_readl(host, STATUS),
- mmc_hostname(host->mmc));
-
- mci_writel(host, CMDARG, 0);
- wmb();
- cmd_flags = SDMMC_CMD_STOP | SDMMC_CMD_RESP_CRC |
- SDMMC_CMD_RESP_EXP | MMC_STOP_TRANSMISSION;
-
- if(host->mmc->hold_reg_flag)
- cmd_flags |= SDMMC_CMD_USE_HOLD_REG;
-
- mci_writel(host, CMD, cmd_flags | SDMMC_CMD_START);
- wmb();
- timeout = jiffies + msecs_to_jiffies(500);
-
- while(ret) {
- ret = time_before(jiffies, timeout);
- if (!(mci_readl(host, CMD) & SDMMC_CMD_START))
- break;
- }
- if(false == ret)
- MMC_DBG_ERR_FUNC(host->mmc,
- "%s EVENT_DATA_ERROR recovery failed!!! [%s]\n",
- __func__, mmc_hostname(host->mmc));
- }
- #else
- send_stop_abort(host, data);
- #endif
- state = STATE_DATA_ERROR;
- break;
- }
-
- MMC_DBG_CMD_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: STATE_SENDING_DATA, "
- "wait for EVENT_XFER_COMPLETE.[%s]",
- prev_state, state, mmc_hostname(host->mmc));
-
- if (!test_and_clear_bit(EVENT_XFER_COMPLETE,
- &host->pending_events))
- break;
- MMC_DBG_INFO_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: STATE_SENDING_DATA, "
- "wait for EVENT_DATA_COMPLETE. [%s]",
- prev_state, state, mmc_hostname(host->mmc));
-
- set_bit(EVENT_XFER_COMPLETE, &host->completed_events);
- prev_state = state = STATE_DATA_BUSY;
- /* fall through */
-
- case STATE_DATA_BUSY:
- if (!test_and_clear_bit(EVENT_DATA_COMPLETE,
- &host->pending_events))
- break;
-
- dw_mci_deal_data_end(host, host->mrq);
- MMC_DBG_INFO_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: STATE_DATA_BUSY, "
- "after EVENT_DATA_COMPLETE. [%s]",
- prev_state, state, mmc_hostname(host->mmc));
-
- /* host->data = NULL; */
- set_bit(EVENT_DATA_COMPLETE, &host->completed_events);
- status = host->data_status;
-
- if (status & DW_MCI_DATA_ERROR_FLAGS) {
- if((SDMMC_CTYPE_1BIT != slot->ctype) &&
- (MMC_SEND_EXT_CSD == host->mrq->cmd->opcode))
- MMC_DBG_ERR_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: DW_MCI_DATA_ERROR_FLAGS,"
- "datastatus=0x%x [%s]",
- prev_state, state, status, mmc_hostname(host->mmc));
-
- if (status & SDMMC_INT_DRTO) {
- data->error = -ETIMEDOUT;
- } else if (status & SDMMC_INT_DCRC) {
- data->error = -EILSEQ;
- } else if (status & SDMMC_INT_EBE &&
- host->dir_status == DW_MCI_SEND_STATUS){
- /*
- * No data CRC status was returned.
- * The number of bytes transferred will
- * be exaggerated in PIO mode.
- */
- data->bytes_xfered = 0;
- data->error = -ETIMEDOUT;
- } else {
- dev_err(host->dev,
- "data FIFO error "
- "(status=%08x)\n",
- status);
- data->error = -EIO;
- }
- /*
- * After an error, there may be data lingering
- * in the FIFO, so reset it - doing so
- * generates a block interrupt, hence setting
- * the scatter-gather pointer to NULL.
- */
- dw_mci_fifo_reset(host);
- } else {
- data->bytes_xfered = data->blocks * data->blksz;
- data->error = 0;
- }
-
- if (!data->stop) {
- MMC_DBG_CMD_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: "
- "no stop and no dataerr, exit [%s]",
- prev_state, state, mmc_hostname(host->mmc));
- dw_mci_request_end(host, host->mrq);
- goto unlock;
- }
- MMC_DBG_CMD_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: begin to stop [%s]",
- prev_state, state, mmc_hostname(host->mmc));
-
- if (host->mrq->sbc && !data->error) {
- data->stop->error = 0;
-
- MMC_DBG_CMD_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: have stop and sbc, exit [%s]",
- prev_state,state,mmc_hostname(host->mmc));
-
- dw_mci_request_end(host, host->mrq);
- goto unlock;
- }
-
- prev_state = state = STATE_SENDING_STOP;
- if (!data->error)
- send_stop_cmd(host, data);
- /* fall through */
- MMC_DBG_CMD_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: begin to STATE_SENDING_STOP [%s]",
- prev_state, state, mmc_hostname(host->mmc));
-
- case STATE_SENDING_STOP:
- if (!test_and_clear_bit(EVENT_CMD_COMPLETE,
- &host->pending_events))
- break;
-
- MMC_DBG_CMD_FUNC(host->mmc,
- "Pre-state[%d]-->NowState[%d]: begin to send cmd12 [%s]",
- prev_state, state, mmc_hostname(host->mmc));
-
- /* CMD error in data command */
- if (host->mrq->cmd->error && host->mrq->data) {
- dw_mci_fifo_reset(host);
- }
-
- /*
- host->cmd = NULL;
- host->data = NULL;
- */
- #if 1
- dw_mci_command_complete(host, host->mrq->stop);
- #else
- if (host->mrq->stop)
- dw_mci_command_complete(host, host->mrq->stop);
- else
- host->cmd_status = 0;
- #endif
-
- dw_mci_request_end(host, host->mrq);
- goto unlock;
-
- case STATE_DATA_ERROR:
- if (!test_and_clear_bit(EVENT_XFER_COMPLETE,
- &host->pending_events))
- break;
-
- state = STATE_DATA_BUSY;
- break;
- }
- } while (state != prev_state);
-
- host->state = state;
-unlock:
- spin_unlock(&host->lock);
-}
-
-/* push final bytes to part_buf, only use during push */
-static void dw_mci_set_part_bytes(struct dw_mci *host, void *buf, int cnt)
-{
- memcpy((void *)&host->part_buf, buf, cnt);
- host->part_buf_count = cnt;
-}
-
-/* append bytes to part_buf, only use during push */
-static int dw_mci_push_part_bytes(struct dw_mci *host, void *buf, int cnt)
-{
- cnt = min(cnt, (1 << host->data_shift) - host->part_buf_count);
- memcpy((void *)&host->part_buf + host->part_buf_count, buf, cnt);
- host->part_buf_count += cnt;
- return cnt;
-}
-
-/* pull first bytes from part_buf, only use during pull */
-static int dw_mci_pull_part_bytes(struct dw_mci *host, void *buf, int cnt)
-{
- cnt = min(cnt, (int)host->part_buf_count);
- if (cnt) {
- memcpy(buf, (void *)&host->part_buf + host->part_buf_start,
- cnt);
- host->part_buf_count -= cnt;
- host->part_buf_start += cnt;
- }
- return cnt;
-}
-
-/* pull final bytes from the part_buf, assuming it's just been filled */
-static void dw_mci_pull_final_bytes(struct dw_mci *host, void *buf, int cnt)
-{
- memcpy(buf, &host->part_buf, cnt);
- host->part_buf_start = cnt;
- host->part_buf_count = (1 << host->data_shift) - cnt;
-}
-
-static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt)
-{
- struct mmc_data *data = host->data;
- int init_cnt = cnt;
-
- /* try and push anything in the part_buf */
- if (unlikely(host->part_buf_count)) {
- int len = dw_mci_push_part_bytes(host, buf, cnt);
- buf += len;
- cnt -= len;
- if (host->part_buf_count == 2) {
- mci_writew(host, DATA(host->data_offset),
- host->part_buf16);
- host->part_buf_count = 0;
- }
- }
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- if (unlikely((unsigned long)buf & 0x1)) {
- while (cnt >= 2) {
- u16 aligned_buf[64];
- int len = min(cnt & -2, (int)sizeof(aligned_buf));
- int items = len >> 1;
- int i;
- /* memcpy from input buffer into aligned buffer */
- memcpy(aligned_buf, buf, len);
- buf += len;
- cnt -= len;
- /* push data from aligned buffer into fifo */
- for (i = 0; i < items; ++i)
- mci_writew(host, DATA(host->data_offset),
- aligned_buf[i]);
- }
- } else
-#endif
- {
- u16 *pdata = buf;
- for (; cnt >= 2; cnt -= 2)
- mci_writew(host, DATA(host->data_offset), *pdata++);
- buf = pdata;
- }
- /* put anything remaining in the part_buf */
- if (cnt) {
- dw_mci_set_part_bytes(host, buf, cnt);
- /* Push data if we have reached the expected data length */
- if ((data->bytes_xfered + init_cnt) ==
- (data->blksz * data->blocks))
- mci_writew(host, DATA(host->data_offset),
- host->part_buf16);
- }
-}
-
-static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt)
-{
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- if (unlikely((unsigned long)buf & 0x1)) {
- while (cnt >= 2) {
- /* pull data from fifo into aligned buffer */
- u16 aligned_buf[64];
- int len = min(cnt & -2, (int)sizeof(aligned_buf));
- int items = len >> 1;
- int i;
- for (i = 0; i < items; ++i)
- aligned_buf[i] = mci_readw(host,
- DATA(host->data_offset));
- /* memcpy from aligned buffer into output buffer */
- memcpy(buf, aligned_buf, len);
- buf += len;
- cnt -= len;
- }
- } else
-#endif
- {
- u16 *pdata = buf;
- for (; cnt >= 2; cnt -= 2)
- *pdata++ = mci_readw(host, DATA(host->data_offset));
- buf = pdata;
- }
- if (cnt) {
- host->part_buf16 = mci_readw(host, DATA(host->data_offset));
- dw_mci_pull_final_bytes(host, buf, cnt);
- }
-}
-
-static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt)
-{
- struct mmc_data *data = host->data;
- int init_cnt = cnt;
-
- /* try and push anything in the part_buf */
- if (unlikely(host->part_buf_count)) {
- int len = dw_mci_push_part_bytes(host, buf, cnt);
- buf += len;
- cnt -= len;
- if (host->part_buf_count == 4) {
- mci_writel(host, DATA(host->data_offset),
- host->part_buf32);
- host->part_buf_count = 0;
- }
- }
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- if (unlikely((unsigned long)buf & 0x3)) {
- while (cnt >= 4) {
- u32 aligned_buf[32];
- int len = min(cnt & -4, (int)sizeof(aligned_buf));
- int items = len >> 2;
- int i;
- /* memcpy from input buffer into aligned buffer */
- memcpy(aligned_buf, buf, len);
- buf += len;
- cnt -= len;
- /* push data from aligned buffer into fifo */
- for (i = 0; i < items; ++i)
- mci_writel(host, DATA(host->data_offset),
- aligned_buf[i]);
- }
- } else
-#endif
- {
- u32 *pdata = buf;
- for (; cnt >= 4; cnt -= 4)
- mci_writel(host, DATA(host->data_offset), *pdata++);
- buf = pdata;
- }
- /* put anything remaining in the part_buf */
- if (cnt) {
- dw_mci_set_part_bytes(host, buf, cnt);
- /* Push data if we have reached the expected data length */
- if ((data->bytes_xfered + init_cnt) ==
- (data->blksz * data->blocks))
- mci_writel(host, DATA(host->data_offset),
- host->part_buf32);
- }
-}
-
-static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt)
-{
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- if (unlikely((unsigned long)buf & 0x3)) {
- while (cnt >= 4) {
- /* pull data from fifo into aligned buffer */
- u32 aligned_buf[32];
- int len = min(cnt & -4, (int)sizeof(aligned_buf));
- int items = len >> 2;
- int i;
- for (i = 0; i < items; ++i)
- aligned_buf[i] = mci_readl(host,
- DATA(host->data_offset));
- /* memcpy from aligned buffer into output buffer */
- memcpy(buf, aligned_buf, len);
- buf += len;
- cnt -= len;
- }
- } else
-#endif
- {
- u32 *pdata = buf;
- for (; cnt >= 4; cnt -= 4)
- *pdata++ = mci_readl(host, DATA(host->data_offset));
- buf = pdata;
- }
- if (cnt) {
- host->part_buf32 = mci_readl(host, DATA(host->data_offset));
- dw_mci_pull_final_bytes(host, buf, cnt);
- }
-}
-
-static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt)
-{
- struct mmc_data *data = host->data;
- int init_cnt = cnt;
-
- /* try and push anything in the part_buf */
- if (unlikely(host->part_buf_count)) {
- int len = dw_mci_push_part_bytes(host, buf, cnt);
- buf += len;
- cnt -= len;
-
- if (host->part_buf_count == 8) {
- mci_writeq(host, DATA(host->data_offset),
- host->part_buf);
- host->part_buf_count = 0;
- }
- }
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- if (unlikely((unsigned long)buf & 0x7)) {
- while (cnt >= 8) {
- u64 aligned_buf[16];
- int len = min(cnt & -8, (int)sizeof(aligned_buf));
- int items = len >> 3;
- int i;
- /* memcpy from input buffer into aligned buffer */
- memcpy(aligned_buf, buf, len);
- buf += len;
- cnt -= len;
- /* push data from aligned buffer into fifo */
- for (i = 0; i < items; ++i)
- mci_writeq(host, DATA(host->data_offset),
- aligned_buf[i]);
- }
- } else
-#endif
- {
- u64 *pdata = buf;
- for (; cnt >= 8; cnt -= 8)
- mci_writeq(host, DATA(host->data_offset), *pdata++);
- buf = pdata;
- }
- /* put anything remaining in the part_buf */
- if (cnt) {
- dw_mci_set_part_bytes(host, buf, cnt);
- /* Push data if we have reached the expected data length */
- if ((data->bytes_xfered + init_cnt) ==
- (data->blksz * data->blocks))
- mci_writeq(host, DATA(host->data_offset),
- host->part_buf);
- }
-}
-
-static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
-{
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
- if (unlikely((unsigned long)buf & 0x7)) {
- while (cnt >= 8) {
- /* pull data from fifo into aligned buffer */
- u64 aligned_buf[16];
- int len = min(cnt & -8, (int)sizeof(aligned_buf));
- int items = len >> 3;
- int i;
- for (i = 0; i < items; ++i)
- aligned_buf[i] = mci_readq(host,
- DATA(host->data_offset));
- /* memcpy from aligned buffer into output buffer */
- memcpy(buf, aligned_buf, len);
- buf += len;
- cnt -= len;
- }
- } else
-#endif
- {
- u64 *pdata = buf;
- for (; cnt >= 8; cnt -= 8)
- *pdata++ = mci_readq(host, DATA(host->data_offset));
- buf = pdata;
- }
- if (cnt) {
- host->part_buf = mci_readq(host, DATA(host->data_offset));
- dw_mci_pull_final_bytes(host, buf, cnt);
- }
-}
-
-static void dw_mci_pull_data(struct dw_mci *host, void *buf, int cnt)
-{
- int len;
-
- /* get remaining partial bytes */
- len = dw_mci_pull_part_bytes(host, buf, cnt);
- if (unlikely(len == cnt))
- return;
- buf += len;
- cnt -= len;
-
- /* get the rest of the data */
- host->pull_data(host, buf, cnt);
-}
-
-static void dw_mci_read_data_pio(struct dw_mci *host, bool dto)
-{
- struct sg_mapping_iter *sg_miter = &host->sg_miter;
- void *buf;
- unsigned int offset;
- struct mmc_data *data = host->data;
- int shift = host->data_shift;
- u32 status;
- unsigned int len;
- unsigned int remain, fcnt;
-
- if(!host->mmc->bus_refs){
- printk("Note: %s host->mmc->bus_refs is 0!!!\n", __func__);
- goto host_put;
- }
- do {
- if (!sg_miter_next(sg_miter))
- goto done;
-
- host->sg = sg_miter->piter.sg;
- buf = sg_miter->addr;
- remain = sg_miter->length;
- offset = 0;
-
- do {
- fcnt = (SDMMC_GET_FCNT(mci_readl(host, STATUS))
- << shift) + host->part_buf_count;
- len = min(remain, fcnt);
- if (!len)
- break;
- dw_mci_pull_data(host, (void *)(buf + offset), len);
- data->bytes_xfered += len;
- offset += len;
- remain -= len;
- } while (remain);
-
- sg_miter->consumed = offset;
- status = mci_readl(host, MINTSTS);
- mci_writel(host, RINTSTS, SDMMC_INT_RXDR);
- /* if the RXDR is ready read again */
- } while ((status & SDMMC_INT_RXDR) ||
- (dto && SDMMC_GET_FCNT(mci_readl(host, STATUS))));
-
- if (!remain) {
- if (!sg_miter_next(sg_miter))
- goto done;
- sg_miter->consumed = 0;
- }
- sg_miter_stop(sg_miter);
- return;
-
-done:
- sg_miter_stop(sg_miter);
-host_put:
- host->sg = NULL;
- smp_wmb();
- set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
-}
-
-static void dw_mci_write_data_pio(struct dw_mci *host)
-{
- struct sg_mapping_iter *sg_miter = &host->sg_miter;
- void *buf;
- unsigned int offset;
- struct mmc_data *data = host->data;
- int shift = host->data_shift;
- u32 status;
- unsigned int len;
- unsigned int fifo_depth = host->fifo_depth;
- unsigned int remain, fcnt;
-
- if (!host->mmc->bus_refs){
- printk("Note: %s host->mmc->bus_refs is 0!!!\n", __func__);
- goto host_put;
- }
-
- do {
- if (!sg_miter_next(sg_miter))
- goto done;
-
- host->sg = sg_miter->piter.sg;
- buf = sg_miter->addr;
- remain = sg_miter->length;
- offset = 0;
-
- do {
- fcnt = ((fifo_depth -
- SDMMC_GET_FCNT(mci_readl(host, STATUS)))
- << shift) - host->part_buf_count;
- len = min(remain, fcnt);
- if (!len)
- break;
- host->push_data(host, (void *)(buf + offset), len);
- data->bytes_xfered += len;
- offset += len;
- remain -= len;
- } while (remain);
-
- sg_miter->consumed = offset;
- status = mci_readl(host, MINTSTS);
- mci_writel(host, RINTSTS, SDMMC_INT_TXDR);
- } while (status & SDMMC_INT_TXDR); /* if TXDR write again */
-
- if (!remain) {
- if (!sg_miter_next(sg_miter))
- goto done;
- sg_miter->consumed = 0;
- }
- sg_miter_stop(sg_miter);
- return;
-
-done:
- sg_miter_stop(sg_miter);
-host_put:
- host->sg = NULL;
- smp_wmb();
- set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
-}
-
-static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status)
-{
- if (!host->cmd_status)
- host->cmd_status = status;
-
- if (!host->cmd)
- goto cmd_exit;
-
-cmd_exit:
- smp_wmb();
- set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
- tasklet_schedule(&host->tasklet);
-}
-
-static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
-{
- struct dw_mci *host = dev_id;
- u32 pending, sdio_int;
- int i;
-
- pending = mci_readl(host, MINTSTS); /* read-only mask reg */
-
- /*
- * DTO fix - version 2.10a and below, and only if internal DMA
- * is configured.
- */
- if (host->quirks & DW_MCI_QUIRK_IDMAC_DTO) {
- if (!pending &&
- ((mci_readl(host, STATUS) >> 17) & 0x1fff))
- pending |= SDMMC_INT_DATA_OVER;
- }
-
- if (pending) {
- if (pending & DW_MCI_CMD_ERROR_FLAGS) {
- mci_writel(host, RINTSTS, DW_MCI_CMD_ERROR_FLAGS);
- host->cmd_status = pending;
- smp_wmb();
- MMC_DBG_INFO_FUNC(host->mmc,
- "%s cmd_status INT=0x%x,[%s]",
- __FUNCTION__, host->cmd_status,
- mmc_hostname(host->mmc));
-
- set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
- }
-
- if (pending & DW_MCI_DATA_ERROR_FLAGS) {
- /* if there is an error report DATA_ERROR */
- mci_writel(host, RINTSTS, DW_MCI_DATA_ERROR_FLAGS);
- host->data_status = pending;
- smp_wmb();
- printk(KERN_ERR "[%s] Data transmission error !!!! MINTSTS: [0x%08x]\n",
- mmc_hostname(host->mmc), pending);
- mmc_retune_needed(host->mmc);
- set_bit(EVENT_DATA_ERROR, &host->pending_events);
-
- MMC_DBG_INFO_FUNC(host->mmc,
- "%s data_status INT=0x%x,[%s]",
- __FUNCTION__, host->data_status,
- mmc_hostname(host->mmc));
- tasklet_schedule(&host->tasklet);
- }
-
- if (pending & SDMMC_INT_DATA_OVER) {
- mci_writel(host, RINTSTS, SDMMC_INT_DATA_OVER);
- MMC_DBG_CMD_FUNC(host->mmc,
- "SDMMC_INT_DATA_OVER, INT-pending=0x%x [%s]",
- pending, mmc_hostname(host->mmc));
- if (!host->data_status)
- host->data_status = pending;
- smp_wmb();
- if (host->dir_status == DW_MCI_RECV_STATUS) {
- if (host->sg != NULL)
- dw_mci_read_data_pio(host, true);
- }
- set_bit(EVENT_DATA_COMPLETE, &host->pending_events);
- tasklet_schedule(&host->tasklet);
- }
-
- if (pending & SDMMC_INT_RXDR) {
- mci_writel(host, RINTSTS, SDMMC_INT_RXDR);
- if (host->dir_status == DW_MCI_RECV_STATUS && host->sg)
- dw_mci_read_data_pio(host, false);
- }
-
- if (pending & SDMMC_INT_TXDR) {
- mci_writel(host, RINTSTS, SDMMC_INT_TXDR);
- if (host->dir_status == DW_MCI_SEND_STATUS && host->sg)
- dw_mci_write_data_pio(host);
- }
-
- if (pending & SDMMC_INT_VSI) {
- MMC_DBG_SW_VOL_FUNC(host->mmc,
- "SDMMC_INT_VSI, INT-pending=0x%x. [%s]",
- pending, mmc_hostname(host->mmc));
- mci_writel(host, RINTSTS, SDMMC_INT_VSI);
- dw_mci_cmd_interrupt(host, pending);
- }
-
- if (pending & SDMMC_INT_CMD_DONE) {
- MMC_DBG_CMD_FUNC(host->mmc,
- "SDMMC_INT_CMD_DONE, CMD = 0x%x, INT-pending=0x%x. [%s]",
- mci_readl(host, CMD), pending, mmc_hostname(host->mmc));
- mci_writel(host, RINTSTS, SDMMC_INT_CMD_DONE);
- dw_mci_cmd_interrupt(host, pending);
- }
-
- if (pending & SDMMC_INT_CD) {
- mci_writel(host, RINTSTS, SDMMC_INT_CD);
- MMC_DBG_INFO_FUNC(host->mmc,
- "SDMMC_INT_CD, INT-pending=0x%x. [%s]",
- pending, mmc_hostname(host->mmc));
- wake_lock_timeout(&host->mmc->detect_wake_lock, 5 * HZ);
- queue_work(host->card_workqueue, &host->card_work);
- }
-
- if (pending & SDMMC_INT_HLE) {
- mci_writel(host, RINTSTS, SDMMC_INT_HLE);
- MMC_DBG_CMD_FUNC(host->mmc,
- "SDMMC_INT_HLE INT-pending=0x%x. [%s]\n",
- pending, mmc_hostname(host->mmc));
-
- }
-
- /* Handle SDIO Interrupts */
- for (i = 0; i < host->num_slots; i++) {
- struct dw_mci_slot *slot = host->slot[i];
-
- if (host->verid < DW_MMC_240A)
- sdio_int = SDMMC_INT_SDIO(i);
- else
- sdio_int = SDMMC_INT_SDIO(i + 8);
-
- if (pending & sdio_int) {
- mci_writel(host, RINTSTS, sdio_int);
- mmc_signal_sdio_irq(slot->mmc);
- }
- }
-
- }
-
-#ifdef CONFIG_MMC_DW_IDMAC
- /* External DMA Soc platform NOT need to ack interrupt IDSTS */
- if (!(cpu_is_rk3036() || cpu_is_rk312x())){
- /* Handle DMA interrupts */
- pending = mci_readl(host, IDSTS);
- if (pending & (SDMMC_IDMAC_INT_TI | SDMMC_IDMAC_INT_RI)) {
- mci_writel(host, IDSTS, SDMMC_IDMAC_INT_TI | SDMMC_IDMAC_INT_RI);
- mci_writel(host, IDSTS, SDMMC_IDMAC_INT_NI);
- host->dma_ops->complete((void *)host);
- }
- }
-#endif
-
- return IRQ_HANDLED;
-}
-
-static void dw_mci_work_routine_card(struct work_struct *work)
-{
- struct dw_mci *host = container_of(work, struct dw_mci, card_work);
- int i;
-
- for (i = 0; i < host->num_slots; i++) {
- struct dw_mci_slot *slot = host->slot[i];
- struct mmc_host *mmc = slot->mmc;
- struct mmc_request *mrq;
- int present;
-
- present = dw_mci_get_cd(mmc);
-
- /* Card insert, switch data line to uart function, and vice verse.
- ONLY audi chip need switched by software, using udbg tag in dts!
- */
- if (!(IS_ERR(host->pins_udbg)) &&
- !(IS_ERR(host->pins_default))) {
- if (present) {
- if (pinctrl_select_state(host->pinctrl,
- host->pins_default) < 0)
- dev_err(host->dev,
- "%s: Default pinctrl setting failed!\n",
- mmc_hostname(host->mmc));
- } else {
- if (pinctrl_select_state(host->pinctrl,
- host->pins_udbg) < 0)
- dev_err(host->dev,
- "%s: Udbg pinctrl setting failed!\n",
- mmc_hostname(host->mmc));
- }
- }
-
- while (present != slot->last_detect_state) {
- dev_dbg(&slot->mmc->class_dev, "card %s\n",
- present ? "inserted" : "removed");
- MMC_DBG_BOOT_FUNC(mmc, " The card is %s. ===!!!!!!==[%s]\n",
- present ? "inserted" : "removed.", mmc_hostname(mmc));
-
- dw_mci_ctrl_all_reset(host);
- /* Stop edma when rountine card triggered */
- if(cpu_is_rk3036() || cpu_is_rk312x())
- if(host->dma_ops && host->dma_ops->stop)
- host->dma_ops->stop(host);
- rk_send_wakeup_key();//wake up system
- spin_lock_bh(&host->lock);
-
- /* Card change detected */
- slot->last_detect_state = present;
-
- /* Clean up queue if present */
- mrq = slot->mrq;
- if (mrq) {
- if (mrq == host->mrq) {
- host->data = NULL;
- host->cmd = NULL;
-
- switch (host->state) {
- case STATE_IDLE:
- break;
- case STATE_SENDING_CMD:
- mrq->cmd->error = -ENOMEDIUM;
- if (!mrq->data)
- break;
- /* fall through */
- case STATE_SENDING_DATA:
- mrq->data->error = -ENOMEDIUM;
- dw_mci_stop_dma(host);
- break;
- case STATE_DATA_BUSY:
- case STATE_DATA_ERROR:
- if (mrq->data->error == -EINPROGRESS)
- mrq->data->error = -ENOMEDIUM;
- if (!mrq->stop)
- break;
- /* fall through */
- case STATE_SENDING_STOP:
- mrq->stop->error = -ENOMEDIUM;
- break;
- }
-
- dw_mci_request_end(host, mrq);
- } else {
- list_del(&slot->queue_node);
- mrq->cmd->error = -ENOMEDIUM;
- if (mrq->data)
- mrq->data->error = -ENOMEDIUM;
- if (mrq->stop)
- mrq->stop->error = -ENOMEDIUM;
-
- MMC_DBG_CMD_FUNC(host->mmc,
- "dw_mci_work--reqeuest done, cmd=%d [%s]",
- mrq->cmd->opcode, mmc_hostname(mmc));
-
- spin_unlock(&host->lock);
- mmc_request_done(slot->mmc, mrq);
- spin_lock(&host->lock);
- }
- }
-
- /* Power down slot */
- if (present == 0) {
- /* Clear down the FIFO */
- dw_mci_fifo_reset(host);
-#ifdef CONFIG_MMC_DW_IDMAC
- if (!(cpu_is_rk3036() || cpu_is_rk312x()))
- dw_mci_idmac_reset(host);
-#endif
- }
-
- spin_unlock_bh(&host->lock);
-
- present = dw_mci_get_cd(mmc);
- }
-
- mmc_detect_change(slot->mmc,
- msecs_to_jiffies(host->pdata->detect_delay_ms));
- }
-}
-
-#ifdef CONFIG_OF
-/* given a slot id, find out the device node representing that slot */
-static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot)
-{
- struct device_node *np;
- const __be32 *addr;
- int len;
-
- if (!dev || !dev->of_node)
- return NULL;
-
- for_each_child_of_node(dev->of_node, np) {
- addr = of_get_property(np, "reg", &len);
- if (!addr || (len < sizeof(int)))
- continue;
- if (be32_to_cpup(addr) == slot)
- return np;
- }
- return NULL;
-}
-
-static struct dw_mci_of_slot_quirks {
- char *quirk;
- int id;
-} of_slot_quirks[] = {
- {
- .quirk = "disable-wp",
- .id = DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT,
- },
-};
-
-static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot)
-{
- struct device_node *np = dw_mci_of_find_slot_node(dev, slot);
- int quirks = 0;
- int idx;
-
- /* get quirks */
- for (idx = 0; idx < ARRAY_SIZE(of_slot_quirks); idx++)
- if (of_get_property(np, of_slot_quirks[idx].quirk, NULL))
- quirks |= of_slot_quirks[idx].id;
-
- return quirks;
-}
-
-/* find out bus-width for a given slot */
-static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot)
-{
- struct device_node *np = dev->of_node;//dw_mci_of_find_slot_node(dev, slot);
- u32 bus_wd = 1;
-
- if (!np)
- return 1;
-
- if (of_property_read_u32(np, "bus-width", &bus_wd))
- dev_err(dev, "bus-width property not found, assuming width"
- " as 1\n");
- return bus_wd;
-}
-
-
-/* find the pwr-en gpio for a given slot; or -1 if none specified */
-static int dw_mci_of_get_pwr_en_gpio(struct device *dev, u8 slot)
-{
- struct device_node *np = dev->of_node;//dw_mci_of_find_slot_node(dev, slot);
- int gpio;
-
- if (!np)
- return -EINVAL;
-
- gpio = of_get_named_gpio(np, "pwr-gpios", 0);
-
- /* Having a missing entry is valid; return silently */
- if (!gpio_is_valid(gpio))
- return -EINVAL;
-
- if (devm_gpio_request(dev, gpio, "dw-mci-pwr_en")) {
- dev_warn(dev, "gpio [%d] request failed\n", gpio);
- return -EINVAL;
- }
-
- gpio_direction_output(gpio, 0);//set 0 to pwr-en
-
- return gpio;
-}
-
-
-/* find the write protect gpio for a given slot; or -1 if none specified */
-static int dw_mci_of_get_wp_gpio(struct device *dev, u8 slot)
-{
- struct device_node *np = dw_mci_of_find_slot_node(dev, slot);
- int gpio;
-
- if (!np)
- return -EINVAL;
-
- gpio = of_get_named_gpio(np, "wp-gpios", 0);
-
- /* Having a missing entry is valid; return silently */
- if (!gpio_is_valid(gpio))
- return -EINVAL;
-
- if (devm_gpio_request(dev, gpio, "dw-mci-wp")) {
- dev_warn(dev, "gpio [%d] request failed\n", gpio);
- return -EINVAL;
- }
-
- return gpio;
-}
-
-/* find the cd gpio for a given slot */
-static void dw_mci_of_get_cd_gpio(struct device *dev, u8 slot,
- struct mmc_host *mmc)
-{
- struct device_node *np = dev->of_node;//dw_mci_of_find_slot_node(dev, slot);
- int gpio;
-
- if (!np)
- return;
-
- gpio = of_get_named_gpio(np, "cd-gpios", 0);
-
- /* Having a missing entry is valid; return silently */
- if (!gpio_is_valid(gpio))
- return;
-
- if (mmc_gpio_request_cd(mmc, gpio, 0))
- dev_warn(dev, "gpio [%d] request failed\n", gpio);
-}
-
-static irqreturn_t dw_mci_gpio_cd_irqt(int irq, void *dev_id)
-{
- struct mmc_host *mmc = dev_id;
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
- int gpio_cd = slot->cd_gpio;
-
- (gpio_get_value(gpio_cd) == 0) ?
- irq_set_irq_type(irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT) :
- irq_set_irq_type(irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT);
-
- /* wakeup system whether gpio debounce or not */
- rk_send_wakeup_key();
-
- /* no need to trigger detect flow when rescan is disabled.
- This case happended in dpm, that we just wakeup system and
- let suspend_post notify callback handle it.
- */
- if(mmc->rescan_disable == 0)
- queue_work(host->card_workqueue, &host->card_work);
- else
- printk("%s: rescan been disabled!\n", __FUNCTION__);
-
- return IRQ_HANDLED;
-}
-
-static void dw_mci_of_set_cd_gpio_irq(struct device *dev, u32 gpio,
- struct mmc_host *mmc)
-{
- struct dw_mci_slot *slot = mmc_priv(mmc);
- struct dw_mci *host = slot->host;
- int irq;
- int ret;
-
- /* Having a missing entry is valid; return silently */
- if (!gpio_is_valid(gpio))
- return;
-
- irq = gpio_to_irq(gpio);
- if (irq >= 0) {
- ret = devm_request_threaded_irq(
- &mmc->class_dev, irq,
- NULL, dw_mci_gpio_cd_irqt,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- "dw_mci_cd", mmc);
- if (ret < 0) {
- irq = ret;
- dev_err(host->dev,
- "Request cd-gpio %d interrupt error!\n", gpio);
- } else{
- /* enable wakeup event for gpio-cd in idle or deep suspend*/
- enable_irq_wake(irq);
- }
- } else {
- dev_err(host->dev, "Cannot convert gpio %d to irq!\n", gpio);
- }
-}
-
-static void dw_mci_of_free_cd_gpio_irq(struct device *dev, u32 gpio,
- struct mmc_host *mmc)
-{
- if (!gpio_is_valid(gpio))
- return;
-
- if (gpio_to_irq(gpio) >= 0) {
- devm_free_irq(&mmc->class_dev, gpio_to_irq(gpio), mmc);
- devm_gpio_free(&mmc->class_dev, gpio);
- }
-}
-#else /* CONFIG_OF */
-static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot)
-{
- return 0;
-}
-static u32 dw_mci_of_get_bus_wd(struct device *dev, u8 slot)
-{
- return 1;
-}
-static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot)
-{
- return NULL;
-}
-static int dw_mci_of_get_wp_gpio(struct device *dev, u8 slot)
-{
- return -EINVAL;
-}
-static void dw_mci_of_get_cd_gpio(struct device *dev, u8 slot,
- struct mmc_host *mmc)
-{
- return;
-}
-#endif /* CONFIG_OF */
-
-/* @host: dw_mci host prvdata
- * Init pinctrl for each platform. Usually we assign
- * "defalut" tag for functional usage, "idle" tag for gpio
- * state and "udbg" tag for uart_dbg if any.
- */
-static void dw_mci_init_pinctrl(struct dw_mci *host)
-{
- /* Fixme: DON'T TOUCH EMMC SETTING! */
- if (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_EMMC)
- return;
-
- /* Get pinctrl for DTS */
- host->pinctrl = devm_pinctrl_get(host->dev);
- if (IS_ERR(host->pinctrl)) {
- dev_err(host->dev, "%s: No pinctrl used!\n",
- mmc_hostname(host->mmc));
- return;
- }
-
- /* Lookup idle state */
- host->pins_idle =
- pinctrl_lookup_state(host->pinctrl, PINCTRL_STATE_IDLE);
- if (IS_ERR(host->pins_idle)) {
- dev_err(host->dev, "%s: No idle tag found!\n",
- mmc_hostname(host->mmc));
- } else {
- if (pinctrl_select_state(host->pinctrl, host->pins_idle) < 0)
- dev_err(host->dev,
- "%s: Idle pinctrl setting failed!\n",
- mmc_hostname(host->mmc));
- }
-
- /* Lookup default state */
- host->pins_default =
- pinctrl_lookup_state(host->pinctrl, PINCTRL_STATE_DEFAULT);
- if (IS_ERR(host->pins_default)) {
- dev_err(host->dev, "%s: No default pinctrl found!\n",
- mmc_hostname(host->mmc));
- } else {
- if (pinctrl_select_state(host->pinctrl, host->pins_default) < 0)
- dev_err(host->dev,
- "%s: Default pinctrl setting failed!\n",
- mmc_hostname(host->mmc));
- }
-
- /* Sd card data0/1 may be used for uart_dbg, so were data2/3 for Jtag */
- if ((host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD)) {
- host->pins_udbg = pinctrl_lookup_state(host->pinctrl, "udbg");
- if (IS_ERR(host->pins_udbg)) {
- dev_warn(host->dev, "%s: No udbg pinctrl found!\n",
- mmc_hostname(host->mmc));
- } else {
- if (!dw_mci_get_cd(host->mmc))
- if (pinctrl_select_state(host->pinctrl, host->pins_udbg) < 0)
- dev_err(host->dev, "%s: Udbg pinctrl setting failed!\n",
- mmc_hostname(host->mmc));
- }
- }
-}
-
-static int dw_mci_pm_notify(struct notifier_block *notify_block,
- unsigned long mode, void *unused)
-{
- struct mmc_host *host = container_of(
- notify_block, struct mmc_host, pm_notify);
- unsigned long flags;
-
- switch (mode) {
- case PM_HIBERNATION_PREPARE:
- case PM_SUSPEND_PREPARE:
- dev_err(host->parent,
- "dw_mci_pm_notify: suspend prepare\n");
- spin_lock_irqsave(&host->lock, flags);
- host->rescan_disable = 1;
- spin_unlock_irqrestore(&host->lock, flags);
- if (cancel_delayed_work(&host->detect))
- wake_unlock(&host->detect_wake_lock);
- break;
-
- case PM_POST_SUSPEND:
- case PM_POST_HIBERNATION:
- case PM_POST_RESTORE:
- dev_err(host->parent,
- "dw_mci_pm_notify: post suspend\n");
- spin_lock_irqsave(&host->lock, flags);
- host->rescan_disable = 0;
- spin_unlock_irqrestore(&host->lock, flags);
- mmc_detect_change(host, 10);
- }
-
- return 0;
-}
-
-static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
-{
- struct mmc_host *mmc;
- struct dw_mci_slot *slot;
- const struct dw_mci_drv_data *drv_data = host->drv_data;
- int ctrl_id, ret;
- u32 freq[2];
- u8 bus_width;
-
- mmc = mmc_alloc_host(sizeof(struct dw_mci_slot), host->dev);
- if (!mmc)
- return -ENOMEM;
-
- slot = mmc_priv(mmc);
- slot->id = id;
- slot->mmc = mmc;
- slot->host = host;
- host->slot[id] = slot;
- host->mmc = mmc;
-
- slot->quirks = dw_mci_of_get_slot_quirks(host->dev, slot->id);
-
- mmc->ops = &dw_mci_ops;
-
- if (of_property_read_u32_array(host->dev->of_node,
- "clock-freq-min-max", freq, 2)) {
- mmc->f_min = DW_MCI_FREQ_MIN;
- mmc->f_max = DW_MCI_FREQ_MAX;
-
- printk("%s: fmin=%d, fmax=%d [%s]\n",
- __FUNCTION__, mmc->f_min,
- mmc->f_max, mmc_hostname(mmc));
- } else {
- mmc->f_min = freq[0];
- mmc->f_max = freq[1];
-
- printk("%s: fmin=%d, fmax=%d [%s]\n",
- __FUNCTION__, mmc->f_min,
- mmc->f_max, mmc_hostname(mmc));
- }
-
- if (of_find_property(host->dev->of_node, "supports-sd", NULL))
- mmc->restrict_caps |= RESTRICT_CARD_TYPE_SD;
- if (of_find_property(host->dev->of_node, "supports-sdio", NULL))
- mmc->restrict_caps |= RESTRICT_CARD_TYPE_SDIO;
- if (of_find_property(host->dev->of_node, "supports-emmc", NULL))
- mmc->restrict_caps |= RESTRICT_CARD_TYPE_EMMC;
-
- if (mmc->restrict_caps & RESTRICT_CARD_TYPE_SD) {
- mmc->pm_notify.notifier_call = dw_mci_pm_notify;
- if (register_pm_notifier(&mmc->pm_notify)) {
- pr_err("dw_mci: register_pm_notifier failed\n");
- goto err_pm_notifier;
- }
- }
-
- if (host->cid == DW_MCI_TYPE_RK3368) {
- if (IS_ERR(host->grf))
- pr_err("rk_sdmmc: dts couldn't find grf regmap for 3368\n");
- else
- /* Disable force_jtag */
- regmap_write(host->grf, 0x43c, (1<<13)<<16 | (0 << 13));
- } else if (cpu_is_rk3288()) {
- grf_writel(((1 << 12) << 16) | (0 << 12), RK3288_GRF_SOC_CON0);
- } else if (host->cid == DW_MCI_TYPE_RK3228) {
- grf_writel(((1 << 8) << 16) | (0 << 8), RK3228_GRF_SOC_CON6);
- }
-
- /* We assume only low-level chip use gpio_cd */
- if ((soc_is_rk3126() || soc_is_rk3126b() || soc_is_rk3036()) &&
- (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD)) {
- slot->cd_gpio = of_get_named_gpio(host->dev->of_node, "cd-gpios", 0);
- if (gpio_is_valid(slot->cd_gpio)) {
- /* Request gpio int for card detection */
- dw_mci_of_set_cd_gpio_irq(host->dev, slot->cd_gpio,host->mmc);
- } else {
- slot->cd_gpio = -ENODEV;
- dev_err(host->dev, "failed to get your cd-gpios!\n");
- }
- }
-
- if (host->pdata->get_ocr)
- mmc->ocr_avail = host->pdata->get_ocr(id);
- else
- {
- mmc->ocr_avail = MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 |
- MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33|
- MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36 |
- MMC_VDD_26_27 | MMC_VDD_25_26 | MMC_VDD_24_25 |
- MMC_VDD_23_24 | MMC_VDD_22_23 | MMC_VDD_21_22 |
- MMC_VDD_20_21 | MMC_VDD_165_195;
- }
-
- /*
- * Start with slot power disabled, it will be enabled when a card
- * is detected.
- */
- if (host->pdata->setpower)
- host->pdata->setpower(id, 0);
-
- if (host->pdata->caps)
- mmc->caps = host->pdata->caps;
-
- if (host->pdata->pm_caps)
- mmc->pm_caps = host->pdata->pm_caps;
-
- if (host->dev->of_node) {
- ctrl_id = of_alias_get_id(host->dev->of_node, "mshc");
- if (ctrl_id < 0)
- ctrl_id = 0;
- } else {
- ctrl_id = to_platform_device(host->dev)->id;
- }
- if (drv_data && drv_data->caps)
- mmc->caps |= drv_data->caps[ctrl_id];
- if (drv_data && drv_data->hold_reg_flag)
- mmc->hold_reg_flag |= drv_data->hold_reg_flag[ctrl_id];
-
- /* set the compatibility of driver. */
- mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50
- | MMC_CAP_UHS_SDR104 | MMC_CAP_ERASE ;
-
- if (host->pdata->caps2)
- mmc->caps2 = host->pdata->caps2;
-
- if (host->pdata->get_bus_wd)
- bus_width = host->pdata->get_bus_wd(slot->id);
- else if (host->dev->of_node)
- bus_width = dw_mci_of_get_bus_wd(host->dev, slot->id);
- else
- bus_width = 1;
-
- switch (bus_width) {
- case 8:
- mmc->caps |= MMC_CAP_8_BIT_DATA;
- case 4:
- mmc->caps |= MMC_CAP_4_BIT_DATA;
- }
-
- if (of_find_property(host->dev->of_node, "cap-power-off-card", NULL))
- mmc->caps |= MMC_CAP_POWER_OFF_CARD;
- if (of_find_property(host->dev->of_node, "cap-sdio-irq", NULL))
- mmc->caps |= MMC_CAP_SDIO_IRQ;
- if (of_find_property(host->dev->of_node, "poll-hw-reset", NULL))
- mmc->caps |= MMC_CAP_HW_RESET;
- if (of_find_property(host->dev->of_node, "full-pwr-cycle", NULL))
- mmc->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
- if (of_find_property(host->dev->of_node, "keep-power-in-suspend", NULL))
- mmc->pm_caps |= MMC_PM_KEEP_POWER;
- if (of_find_property(host->dev->of_node, "ignore-pm-notify", NULL))
- mmc->pm_caps |= MMC_PM_IGNORE_PM_NOTIFY;
- if (of_find_property(host->dev->of_node, "enable-sdio-wakeup", NULL))
- mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
-
- /*Assign pm_caps pass to pm_flags*/
- mmc->pm_flags = mmc->pm_caps;
-
- if (host->pdata->blk_settings) {
- mmc->max_segs = host->pdata->blk_settings->max_segs;
- mmc->max_blk_size = host->pdata->blk_settings->max_blk_size;
- mmc->max_blk_count = host->pdata->blk_settings->max_blk_count;
- mmc->max_req_size = host->pdata->blk_settings->max_req_size;
- mmc->max_seg_size = host->pdata->blk_settings->max_seg_size;
- } else {
- /* Useful defaults if platform data is unset. */
-#ifdef CONFIG_MMC_DW_IDMAC
- mmc->max_segs = host->ring_size;
- mmc->max_blk_size = 65536;
- mmc->max_seg_size = 0x1000;
- mmc->max_req_size = mmc->max_seg_size * host->ring_size;
- mmc->max_blk_count = mmc->max_req_size / 512;
-
- if(cpu_is_rk3036() || cpu_is_rk312x()){
- /* fixup for external dmac setting */
- mmc->max_segs = 64;
- mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */
- mmc->max_blk_count = 65535;
- mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
- mmc->max_seg_size = mmc->max_req_size;
- }
-#else
- mmc->max_segs = 64;
- mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */
- mmc->max_blk_count = 512;
- mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
- mmc->max_seg_size = mmc->max_req_size;
-#endif /* CONFIG_MMC_DW_IDMAC */
-
- }
- /* pwr_en */
- slot->pwr_en_gpio = dw_mci_of_get_pwr_en_gpio(host->dev, slot->id);
-
- if (!(mmc->restrict_caps & RESTRICT_CARD_TYPE_SD))
- {
- host->vmmc = NULL;
- }else{
-
- if(mmc->restrict_caps & RESTRICT_CARD_TYPE_SD)
- host->vmmc = devm_regulator_get(mmc_dev(mmc), "vmmc");
- else
- host->vmmc = NULL;
-
- if (IS_ERR(host->vmmc)) {
- pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
- host->vmmc = NULL;
- }else{
- ret = regulator_enable(host->vmmc);
- if (ret) {
- dev_err(host->dev,
- "failed to enable regulator: %d\n", ret);
- host->vmmc = NULL;
- goto err_setup_bus;
- }
- }
- }
-
- slot->wp_gpio = dw_mci_of_get_wp_gpio(host->dev, slot->id);
-
- if (mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO)
- clear_bit(DW_MMC_CARD_PRESENT, &slot->flags);
-
- dw_mci_init_pinctrl(host);
- ret = mmc_add_host(mmc);
- if (ret)
- goto err_setup_bus;
-
-#if defined(CONFIG_DEBUG_FS)
- dw_mci_init_debugfs(slot);
-#endif
-
- /* Card initially undetected */
- slot->last_detect_state = 1;
-
- return 0;
-err_pm_notifier:
- unregister_pm_notifier(&mmc->pm_notify);
-
-err_setup_bus:
- if (gpio_is_valid(slot->cd_gpio))
- dw_mci_of_free_cd_gpio_irq(host->dev, slot->cd_gpio,host->mmc);
- mmc_free_host(mmc);
- return -EINVAL;
-}
-
-static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id)
-{
- /* Shutdown detect IRQ */
- if (slot->host->pdata->exit)
- slot->host->pdata->exit(id);
-
- /* Debugfs stuff is cleaned up by mmc core */
- mmc_remove_host(slot->mmc);
- slot->host->slot[id] = NULL;
- mmc_free_host(slot->mmc);
-}
-
-static void dw_mci_init_dma(struct dw_mci *host)
-{
- /* Alloc memory for sg translation */
- host->sg_cpu = dmam_alloc_coherent(host->dev, PAGE_SIZE,
- &host->sg_dma, GFP_KERNEL);
- if (!host->sg_cpu) {
- dev_err(host->dev, "%s: could not alloc DMA memory\n",
- __func__);
- goto no_dma;
- }
-
- /* Determine which DMA interface to use */
-#if defined(CONFIG_MMC_DW_IDMAC)
- if(cpu_is_rk3036() || cpu_is_rk312x()){
- host->dma_ops = &dw_mci_edmac_ops;
- dev_info(host->dev, "Using external DMA controller.\n");
- }else{
- host->dma_ops = &dw_mci_idmac_ops;
- dev_info(host->dev, "Using internal DMA controller.\n");
- }
-#endif
-
- if (!host->dma_ops)
- goto no_dma;
-
- if (host->dma_ops->init && host->dma_ops->start &&
- host->dma_ops->stop && host->dma_ops->cleanup) {
- if (host->dma_ops->init(host)) {
- dev_err(host->dev, "%s: Unable to initialize "
- "DMA Controller.\n", __func__);
- goto no_dma;
- }
- } else {
- dev_err(host->dev, "DMA initialization not found.\n");
- goto no_dma;
- }
-
- host->use_dma = 1;
- return;
-
-no_dma:
- dev_info(host->dev, "Using PIO mode.\n");
- host->use_dma = 0;
- return;
-}
-
-static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset)
-{
- unsigned long timeout = jiffies + msecs_to_jiffies(500);
- u32 ctrl;
-
- ctrl = mci_readl(host, CTRL);
- ctrl |= reset;
- mci_writel(host, CTRL, ctrl);
-
- /* wait till resets clear */
- do {
- ctrl = mci_readl(host, CTRL);
- if (!(ctrl & reset))
- return true;
- } while (time_before(jiffies, timeout));
-
- dev_err(host->dev,
- "Timeout resetting block (ctrl reset %#x)\n",
- ctrl & reset);
-
- return false;
-}
-
-static inline bool dw_mci_fifo_reset(struct dw_mci *host)
-{
- /*
- * Reseting generates a block interrupt, hence setting
- * the scatter-gather pointer to NULL.
- */
- if (host->sg) {
- sg_miter_stop(&host->sg_miter);
- host->sg = NULL;
- }
-
- return dw_mci_ctrl_reset(host, SDMMC_CTRL_FIFO_RESET);
-}
-
-static inline bool dw_mci_ctrl_all_reset(struct dw_mci *host)
-{
- return dw_mci_ctrl_reset(host,
- SDMMC_CTRL_FIFO_RESET |
- SDMMC_CTRL_RESET |
- SDMMC_CTRL_DMA_RESET);
-}
-
-static void dw_mci_rst_pre_suspend(struct dw_mci *host)
-{
- u32 index;
- u32 *buffer;
-
- buffer = host->regs_buffer;
-
- for (index = 0; index < DW_REGS_NUM ; index++){
- *buffer = mci_readreg(host, index*4);
- MMC_DBG_INFO_FUNC(host->mmc, "[%s] :0x%08x.\n",
- dw_mci_regs[index].name, *buffer);
- buffer++;
- }
-
- *buffer = mci_readl(host,CDTHRCTL);
- MMC_DBG_INFO_FUNC(host->mmc, "[%s] :0x%08x.\n", "CARDTHRCTL", *buffer);
-}
-
-static void dw_mci_rst_post_resume(struct dw_mci *host)
-{
- u32 index;
- u32 *buffer;
-
- buffer = host->regs_buffer;
-
- for (index = 0; index < DW_REGS_NUM; index++){
- mci_writereg(host, index*4, *buffer);
- buffer++;
- }
- mci_writel(host, CDTHRCTL, *buffer);
-}
-
-static const struct dw_mci_rst_ops dw_mci_pdrst_ops = {
- .pre_suspend = dw_mci_rst_pre_suspend,
- .post_resume = dw_mci_rst_post_resume,
-};
-
-#ifdef CONFIG_OF
-/*
-static struct dw_mci_of_quirks {
- char *quirk;
- int id;
-} of_quirks[] = {
- {
- .quirk = "broken-cd",
- .id = DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
- },
-};
-*/
-static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
-{
- struct dw_mci_board *pdata;
- struct device *dev = host->dev;
- struct device_node *np = dev->of_node;
- const struct dw_mci_drv_data *drv_data = host->drv_data;
- int ret;
- u32 clock_frequency;
-
- pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata) {
- dev_err(dev, "could not allocate memory for pdata\n");
- return ERR_PTR(-ENOMEM);
- }
-
- /* find out number of slots supported */
- if (of_property_read_u32(dev->of_node, "num-slots",
- &pdata->num_slots)) {
- dev_info(dev, "num-slots property not found, "
- "assuming 1 slot is available\n");
- pdata->num_slots = 1;
- }
-
- if (of_property_read_u32(np, "fifo-depth", &pdata->fifo_depth))
- dev_info(dev, "fifo-depth property not found, using "
- "value of FIFOTH register as default\n");
-
- of_property_read_u32(np, "card-detect-delay", &pdata->detect_delay_ms);
-
- if (!of_property_read_u32(np, "clock-frequency", &clock_frequency))
- pdata->bus_hz = clock_frequency;
-
- if (drv_data && drv_data->parse_dt) {
- ret = drv_data->parse_dt(host);
- if (ret)
- return ERR_PTR(ret);
- }
-
- if (of_find_property(np, "keep-power-in-suspend", NULL))
- pdata->pm_caps |= MMC_PM_KEEP_POWER;
-
- if (of_find_property(np, "enable-sdio-wakeup", NULL))
- pdata->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
-
- if (of_find_property(np, "supports-highspeed", NULL))
- pdata->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
-
- if (of_find_property(np, "supports-UHS_SDR104", NULL))
- pdata->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50;
-
- if (of_find_property(np, "supports-DDR_MODE", NULL))
- pdata->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_1_2V_DDR;
-
- if (of_find_property(np, "caps2-mmc-hs200", NULL))
- pdata->caps2 |= MMC_CAP2_HS200;
-
- if (of_find_property(np, "caps2-mmc-hs200-1_8v", NULL))
- pdata->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
-
- if (of_find_property(np, "caps2-mmc-hs200-1_2v", NULL))
- pdata->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
-
- if (of_get_property(np, "cd-inverted", NULL))
- pdata->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
-
- if (of_get_property(np, "bootpart-no-access", NULL))
- pdata->caps2 |= MMC_CAP2_BOOTPART_NOACC;
-
- if (of_get_property(np, "controller-power-down", NULL)) {
- host->regs_buffer =
- (u32 *)devm_kzalloc(host->dev,
- DW_REGS_SIZE, GFP_KERNEL);
- if (!host->regs_buffer) {
- dev_err(host->dev,
- "could not allocate memory for regs_buffer\n");
- return ERR_PTR(-ENOMEM);
- }
-
- host->rst_ops = &dw_mci_pdrst_ops;
- }
-
- if (of_get_property(np, "assume_removable", NULL))
- mmc_assume_removable = 0;
-
- if (!of_property_read_u32(np, "cru_regsbase", &host->cru_regsbase)) {
- printk("dw cru_regsbase addr 0x%03x.\n", host->cru_regsbase);
- } else {
- pr_err("dw cru_regsbase addr is missing!\n");
- return ERR_PTR(-1);
- }
-
- if (!of_property_read_u32(np, "cru_reset_offset", &host->cru_reset_offset)) {
- printk("dw cru_reset_offset val %d.\n", host->cru_reset_offset);
- } else {
- pr_err("dw cru_reset_offset val is missing!\n");
- return ERR_PTR(-1);
- }
-
- return pdata;
-}
-
-#else /* CONFIG_OF */
-static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
-{
- return ERR_PTR(-EINVAL);
-}
-#endif /* CONFIG_OF */
-
-int dw_mci_probe(struct dw_mci *host)
-{
- const struct dw_mci_drv_data *drv_data = host->drv_data;
- int width, i, ret = 0;
- u32 fifo_size;
- int init_slots = 0;
- u32 regs;
-
- if (!host->pdata) {
- host->pdata = dw_mci_parse_dt(host);
- if (IS_ERR(host->pdata)) {
- dev_err(host->dev, "platform data not available\n");
- return -EINVAL;
- }
- }
-
- if (!host->pdata->select_slot && host->pdata->num_slots > 1) {
- dev_err(host->dev,
- "Platform data must supply select_slot function\n");
- return -ENODEV;
- }
-
- /*
- * In 2.40a spec, Data offset is changed.
- * Need to check the version-id and set data-offset for DATA register.
- */
- host->verid = SDMMC_GET_VERID(mci_readl(host, VERID));
- dev_info(host->dev, "Version ID is %04x\n", host->verid);
-
- if (host->verid < DW_MMC_240A)
- host->data_offset = DATA_OFFSET;
- else
- host->data_offset = DATA_240A_OFFSET;
-
- //hpclk enable
- host->hpclk_mmc= devm_clk_get(host->dev, "hpclk_mmc");
- if (IS_ERR(host->hpclk_mmc)) {
- dev_err(host->dev, "failed to get hpclk_mmc\n");
- } else {
- clk_prepare_enable(host->hpclk_mmc);
- }
-
- //hclk enable
- host->hclk_mmc= devm_clk_get(host->dev, "hclk_mmc");
- if (IS_ERR(host->hclk_mmc)) {
- dev_err(host->dev, "failed to get hclk_mmc\n");
- ret = PTR_ERR(host->hclk_mmc);
- goto err_hclk_mmc;
- }
-
- clk_prepare_enable(host->hclk_mmc);
-
- //mmc clk enable
- host->clk_mmc = devm_clk_get(host->dev, "clk_mmc");
- if (IS_ERR(host->clk_mmc)) {
- dev_err(host->dev, "failed to get clk mmc_per\n");
- ret = PTR_ERR(host->clk_mmc);
- goto err_clk_mmc;
- }
-
- host->bus_hz = host->pdata->bus_hz;
- if (!host->bus_hz) {
- dev_err(host->dev, "Platform data must supply bus speed\n");
- ret = -ENODEV;
- goto err_clk_mmc;
- }
-
- if (host->verid < DW_MMC_240A)
- ret = clk_set_rate(host->clk_mmc, host->bus_hz);
- else
- //rockchip: fix divider 2 in clksum before controlller
- ret = clk_set_rate(host->clk_mmc, host->bus_hz * 2);
-
- if(ret < 0) {
- dev_err(host->dev, "failed to set clk mmc\n");
- goto err_clk_mmc;
- }
- clk_prepare_enable(host->clk_mmc);
-
- if (drv_data && drv_data->setup_clock) {
- ret = drv_data->setup_clock(host);
- if (ret) {
- dev_err(host->dev,
- "implementation specific clock setup failed\n");
- goto err_clk_mmc;
- }
- }
-
- host->quirks = host->pdata->quirks;
- host->irq_state = true;
- host->set_speed = 0;
- host->set_div = 0;
- host->svi_flags = 0;
-
- spin_lock_init(&host->lock);
- spin_lock_init(&host->slock);
-
- INIT_LIST_HEAD(&host->queue);
- /*
- * Get the host data width - this assumes that HCON has been set with
- * the correct values.
- */
- i = (mci_readl(host, HCON) >> 7) & 0x7;
- if (!i) {
- host->push_data = dw_mci_push_data16;
- host->pull_data = dw_mci_pull_data16;
- width = 16;
- host->data_shift = 1;
- } else if (i == 2) {
- host->push_data = dw_mci_push_data64;
- host->pull_data = dw_mci_pull_data64;
- width = 64;
- host->data_shift = 3;
- } else {
- /* Check for a reserved value, and warn if it is */
- WARN((i != 1),
- "HCON reports a reserved host data width!\n"
- "Defaulting to 32-bit access.\n");
- host->push_data = dw_mci_push_data32;
- host->pull_data = dw_mci_pull_data32;
- width = 32;
- host->data_shift = 2;
- }
-
- /* Reset all blocks */
- if (!dw_mci_ctrl_all_reset(host))
- return -ENODEV;
-
- init_dma_attrs(&dw_mci_direct_attrs);
- dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &dw_mci_direct_attrs);
-
- host->dma_ops = host->pdata->dma_ops;
- dw_mci_init_dma(host);
-
- /* Clear the interrupts for the host controller */
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */
-
- /* Put in max timeout */
- mci_writel(host, TMOUT, 0xFFFFFFFF);
-
- /*
- * FIFO threshold settings RxMark = fifo_size / 2 - 1,
- * Tx Mark = fifo_size / 2 DMA Size = 8
- */
- if (!host->pdata->fifo_depth) {
- /*
- * Power-on value of RX_WMark is FIFO_DEPTH-1, but this may
- * have been overwritten by the bootloader, just like we're
- * about to do, so if you know the value for your hardware, you
- * should put it in the platform data.
- */
- fifo_size = mci_readl(host, FIFOTH);
- fifo_size = 1 + ((fifo_size >> 16) & 0xfff);
- } else {
- fifo_size = host->pdata->fifo_depth;
- }
- host->fifo_depth = fifo_size;
- host->fifoth_val =
- SDMMC_SET_FIFOTH(0x2, fifo_size / 2 - 1, fifo_size / 2);
- mci_writel(host, FIFOTH, host->fifoth_val);
-
- /* disable clock to CIU */
- mci_writel(host, CLKENA, 0);
- mci_writel(host, CLKSRC, 0);
-
- tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host);
- host->card_workqueue = alloc_workqueue("dw-mci-card",
- WQ_MEM_RECLAIM | WQ_NON_REENTRANT, 1);
- if (!host->card_workqueue) {
- ret = -ENOMEM;
- goto err_dmaunmap;
- }
- INIT_WORK(&host->card_work, dw_mci_work_routine_card);
- ret = devm_request_irq(host->dev, host->irq, dw_mci_interrupt,
- host->irq_flags, "dw-mci", host);
- if (ret)
- goto err_workqueue;
-
- if (host->pdata->num_slots)
- host->num_slots = host->pdata->num_slots;
- else
- host->num_slots = ((mci_readl(host, HCON) >> 1) & 0x1F) + 1;
-
- /* We need at least one slot to succeed */
- for (i = 0; i < host->num_slots; i++) {
- ret = dw_mci_init_slot(host, i);
- if (ret)
- dev_dbg(host->dev, "slot %d init failed\n", i);
- else
- init_slots++;
- }
-
- /*
- * Enable interrupts for command done, data over, data empty, card det,
- * receive ready and error such as transmit, receive timeout, crc error
- */
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- regs = SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | SDMMC_INT_TXDR |
- SDMMC_INT_VSI | SDMMC_INT_RXDR | DW_MCI_ERROR_FLAGS;
- if (!(host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO) &&
- !(host->mmc->restrict_caps & RESTRICT_CARD_TYPE_EMMC))
- regs |= SDMMC_INT_CD;
-
- mci_writel(host, INTMASK, regs);
-
- mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); /* Enable mci interrupt */
-
- dev_info(host->dev, "DW MMC controller at irq %d, "
- "%d bit host data width, "
- "%u deep fifo\n",
- host->irq, width, fifo_size);
-
- if (init_slots) {
- dev_info(host->dev, "%d slots initialized\n", init_slots);
- } else {
- dev_dbg(host->dev, "attempted to initialize %d slots, "
- "but failed on all\n", host->num_slots);
- goto err_workqueue;
- }
-
-
- if (host->quirks & DW_MCI_QUIRK_IDMAC_DTO)
- dev_info(host->dev, "Internal DMAC interrupt fix enabled.\n");
-
- return 0;
-
-err_workqueue:
- destroy_workqueue(host->card_workqueue);
-
-err_dmaunmap:
- if (host->use_dma && host->dma_ops->exit)
- host->dma_ops->exit(host);
-
- if (host->vmmc){
- regulator_disable(host->vmmc);
- regulator_put(host->vmmc);
- }
-
-err_clk_mmc:
- if (!IS_ERR(host->clk_mmc))
- clk_disable_unprepare(host->clk_mmc);
-err_hclk_mmc:
- if (!IS_ERR(host->hclk_mmc))
- clk_disable_unprepare(host->hclk_mmc);
- return ret;
-}
-EXPORT_SYMBOL(dw_mci_probe);
-
-void dw_mci_remove(struct dw_mci *host)
-{
- struct mmc_host *mmc = host->mmc;
- struct dw_mci_slot *slot = mmc_priv(mmc);
- int i;
-
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */
-
- for(i = 0; i < host->num_slots; i++){
- dev_dbg(host->dev, "remove slot %d\n", i);
- if(host->slot[i])
- dw_mci_cleanup_slot(host->slot[i], i);
- }
-
- /* disable clock to CIU */
- mci_writel(host, CLKENA, 0);
- mci_writel(host, CLKSRC, 0);
-
- destroy_workqueue(host->card_workqueue);
- if (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD)
- unregister_pm_notifier(&host->mmc->pm_notify);
-
- if (host->use_dma && host->dma_ops->exit)
- host->dma_ops->exit(host);
-
- if (gpio_is_valid(slot->cd_gpio))
- dw_mci_of_free_cd_gpio_irq(host->dev, slot->cd_gpio, host->mmc);
-
- if (host->vmmc){
- regulator_disable(host->vmmc);
- regulator_put(host->vmmc);
- }
- if (!IS_ERR(host->clk_mmc))
- clk_disable_unprepare(host->clk_mmc);
-
- if (!IS_ERR(host->hclk_mmc))
- clk_disable_unprepare(host->hclk_mmc);
- if (!IS_ERR(host->hpclk_mmc))
- clk_disable_unprepare(host->hpclk_mmc);
-}
-EXPORT_SYMBOL(dw_mci_remove);
-
-
-
-#ifdef CONFIG_PM_SLEEP
-/*
- * TODO: we should probably disable the clock to the card in the suspend path.
- */
-extern int get_wifi_chip_type(void);
-int dw_mci_suspend(struct dw_mci *host)
-{
- int present = dw_mci_get_cd(host->mmc);
-
- if((host->mmc->restrict_caps &
- RESTRICT_CARD_TYPE_SDIO) &&
- (get_wifi_chip_type() == WIFI_ESP8089 ||
- get_wifi_chip_type() > WIFI_AP6XXX_SERIES))
- return 0;
-
- if(host->vmmc)
- regulator_disable(host->vmmc);
-
- /* Only for sdmmc controller */
- if (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD) {
- disable_irq(host->irq);
- if (present) {
- if (pinctrl_select_state(host->pinctrl, host->pins_idle) < 0)
- MMC_DBG_ERR_FUNC(host->mmc,
- "Idle pinctrl setting failed! [%s]",
- mmc_hostname(host->mmc));
- }
-
- /* Soc rk3126/3036 already in gpio_cd mode */
- if (!soc_is_rk3126() && !soc_is_rk3126b() && !soc_is_rk3036()) {
- dw_mci_of_get_cd_gpio(host->dev, 0, host->mmc);
- enable_irq_wake(host->mmc->slot.cd_irq);
- }
- }
-
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- mci_writel(host, INTMASK, 0x00);
- mci_writel(host, CTRL, 0x00);
-
- if (host->rst_ops &&
- host->rst_ops->pre_suspend)
- host->rst_ops->pre_suspend(host);
-
- return 0;
-}
-EXPORT_SYMBOL(dw_mci_suspend);
-
-int dw_mci_resume(struct dw_mci *host)
-{
- int i, ret;
- u32 regs;
- struct dw_mci_slot *slot;
- int present = dw_mci_get_cd(host->mmc);
-
- if (host->rst_ops &&
- host->rst_ops->post_resume)
- host->rst_ops->post_resume(host);
-
-
- if ((host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO) &&
- (get_wifi_chip_type() == WIFI_ESP8089 ||
- get_wifi_chip_type() > WIFI_AP6XXX_SERIES))
- return 0;
-
- if (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO) {
- slot = mmc_priv(host->mmc);
- if (!test_bit(DW_MMC_CARD_PRESENT, &slot->flags))
- return 0;
- }
-
- /*only for sdmmc controller*/
- if (host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD) {
- /* Soc rk3126/3036 already in gpio_cd mode */
- if (!soc_is_rk3126() && !soc_is_rk3126b() && !soc_is_rk3036()) {
- disable_irq_wake(host->mmc->slot.cd_irq);
- mmc_gpio_free_cd(host->mmc);
- }
-
- if (!present) {
- if (!IS_ERR(host->pins_udbg)) {
- if (pinctrl_select_state(host->pinctrl, host->pins_idle) < 0)
- MMC_DBG_ERR_FUNC(host->mmc,
- "Idle pinctrl setting failed! [%s]",
- mmc_hostname(host->mmc));
- if (pinctrl_select_state(host->pinctrl, host->pins_udbg) < 0)
- MMC_DBG_ERR_FUNC(host->mmc,
- "Udbg pinctrl setting failed! [%s]",
- mmc_hostname(host->mmc));
- } else {
- if (pinctrl_select_state(host->pinctrl, host->pins_default) < 0)
- MMC_DBG_ERR_FUNC(host->mmc,
- "Default pinctrl setting failed! [%s]",
- mmc_hostname(host->mmc));
- }
- } else {
- if(pinctrl_select_state(host->pinctrl, host->pins_default) < 0)
- MMC_DBG_ERR_FUNC(host->mmc,
- "Default pinctrl setting failed! [%s]",
- mmc_hostname(host->mmc));
- }
-
- /* Disable jtag*/
- if (cpu_is_rk3288())
- grf_writel(((1 << 12) << 16) | (0 << 12), RK3288_GRF_SOC_CON0);
- else if (cpu_is_rk3036())
- grf_writel(((1 << 11) << 16) | (0 << 11), RK3036_GRF_SOC_CON0);
- else if (cpu_is_rk312x())
- /* RK3036_GRF_SOC_CON0 is compatible with rk312x, tmp setting */
- grf_writel(((1 << 8) << 16) | (0 << 8), RK3036_GRF_SOC_CON0);
- }
- if (host->vmmc){
- ret = regulator_enable(host->vmmc);
- if (ret){
- dev_err(host->dev,
- "failed to enable regulator: %d\n", ret);
- return ret;
- }
- }
-
- if (!dw_mci_ctrl_all_reset(host)){
- ret = -ENODEV;
- return ret;
- }
-
- if (!(cpu_is_rk3036() || cpu_is_rk312x()))
- if(host->use_dma && host->dma_ops->init)
- host->dma_ops->init(host);
-
- /*
- * Restore the initial value at FIFOTH register
- * And Invalidate the prev_blksz with zero
- */
- mci_writel(host, FIFOTH, host->fifoth_val);
- host->prev_blksz = 0;
- /* Put in max timeout */
- mci_writel(host, TMOUT, 0xFFFFFFFF);
-
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- regs = SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | SDMMC_INT_TXDR |
- SDMMC_INT_RXDR | SDMMC_INT_VSI | DW_MCI_ERROR_FLAGS;
-
- if (!(host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SDIO))
- regs |= SDMMC_INT_CD;
-
- mci_writel(host, INTMASK, regs);
- mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE);
-
- /* Only for sdmmc controller */
- if ((host->mmc->restrict_caps & RESTRICT_CARD_TYPE_SD))
- enable_irq(host->irq);
-
- for (i = 0; i < host->num_slots; i++){
- struct dw_mci_slot *slot = host->slot[i];
- if (!slot)
- continue;
- if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER){
- dw_mci_set_ios(slot->mmc, &slot->mmc->ios);
- dw_mci_setup_bus(slot, true);
- }
- }
-
- return 0;
-}
-EXPORT_SYMBOL(dw_mci_resume);
-#endif /* CONFIG_PM_SLEEP */
-
-static int __init dw_mci_init(void)
-{
- pr_info("Synopsys Designware Multimedia Card Interface Driver\n");
- pr_info("MHSC version = %s\n", RK_SDMMC_DRIVER_VERSION);
- return 0;
-}
-
-static void __exit dw_mci_exit(void)
-{
-}
-
-module_init(dw_mci_init);
-module_exit(dw_mci_exit);
-
-MODULE_DESCRIPTION("Rockchip specific DW Multimedia Card Interface driver");
-MODULE_AUTHOR("Shawn Lin <lintao@rock-chips.com>");
-MODULE_LICENSE("GPL v2");
projects / firefly-linux-kernel-4.4.55.git / commitdiff