#include <linux/pinctrl/consumer.h>
#include <linux/stmp_device.h>
#include <linux/mmc/mxs-mmc.h>
+#include <linux/spi/mxs-spi.h>
#define DRIVER_NAME "mxs-mmc"
-/* card detect polling timeout */
-#define MXS_MMC_DETECT_TIMEOUT (HZ/2)
-
-#define ssp_is_old(host) ((host)->devid == IMX23_MMC)
-
-/* SSP registers */
-#define HW_SSP_CTRL0 0x000
-#define BM_SSP_CTRL0_RUN (1 << 29)
-#define BM_SSP_CTRL0_SDIO_IRQ_CHECK (1 << 28)
-#define BM_SSP_CTRL0_IGNORE_CRC (1 << 26)
-#define BM_SSP_CTRL0_READ (1 << 25)
-#define BM_SSP_CTRL0_DATA_XFER (1 << 24)
-#define BP_SSP_CTRL0_BUS_WIDTH (22)
-#define BM_SSP_CTRL0_BUS_WIDTH (0x3 << 22)
-#define BM_SSP_CTRL0_WAIT_FOR_IRQ (1 << 21)
-#define BM_SSP_CTRL0_LONG_RESP (1 << 19)
-#define BM_SSP_CTRL0_GET_RESP (1 << 17)
-#define BM_SSP_CTRL0_ENABLE (1 << 16)
-#define BP_SSP_CTRL0_XFER_COUNT (0)
-#define BM_SSP_CTRL0_XFER_COUNT (0xffff)
-#define HW_SSP_CMD0 0x010
-#define BM_SSP_CMD0_DBL_DATA_RATE_EN (1 << 25)
-#define BM_SSP_CMD0_SLOW_CLKING_EN (1 << 22)
-#define BM_SSP_CMD0_CONT_CLKING_EN (1 << 21)
-#define BM_SSP_CMD0_APPEND_8CYC (1 << 20)
-#define BP_SSP_CMD0_BLOCK_SIZE (16)
-#define BM_SSP_CMD0_BLOCK_SIZE (0xf << 16)
-#define BP_SSP_CMD0_BLOCK_COUNT (8)
-#define BM_SSP_CMD0_BLOCK_COUNT (0xff << 8)
-#define BP_SSP_CMD0_CMD (0)
-#define BM_SSP_CMD0_CMD (0xff)
-#define HW_SSP_CMD1 0x020
-#define HW_SSP_XFER_SIZE 0x030
-#define HW_SSP_BLOCK_SIZE 0x040
-#define BP_SSP_BLOCK_SIZE_BLOCK_COUNT (4)
-#define BM_SSP_BLOCK_SIZE_BLOCK_COUNT (0xffffff << 4)
-#define BP_SSP_BLOCK_SIZE_BLOCK_SIZE (0)
-#define BM_SSP_BLOCK_SIZE_BLOCK_SIZE (0xf)
-#define HW_SSP_TIMING(h) (ssp_is_old(h) ? 0x050 : 0x070)
-#define BP_SSP_TIMING_TIMEOUT (16)
-#define BM_SSP_TIMING_TIMEOUT (0xffff << 16)
-#define BP_SSP_TIMING_CLOCK_DIVIDE (8)
-#define BM_SSP_TIMING_CLOCK_DIVIDE (0xff << 8)
-#define BP_SSP_TIMING_CLOCK_RATE (0)
-#define BM_SSP_TIMING_CLOCK_RATE (0xff)
-#define HW_SSP_CTRL1(h) (ssp_is_old(h) ? 0x060 : 0x080)
-#define BM_SSP_CTRL1_SDIO_IRQ (1 << 31)
-#define BM_SSP_CTRL1_SDIO_IRQ_EN (1 << 30)
-#define BM_SSP_CTRL1_RESP_ERR_IRQ (1 << 29)
-#define BM_SSP_CTRL1_RESP_ERR_IRQ_EN (1 << 28)
-#define BM_SSP_CTRL1_RESP_TIMEOUT_IRQ (1 << 27)
-#define BM_SSP_CTRL1_RESP_TIMEOUT_IRQ_EN (1 << 26)
-#define BM_SSP_CTRL1_DATA_TIMEOUT_IRQ (1 << 25)
-#define BM_SSP_CTRL1_DATA_TIMEOUT_IRQ_EN (1 << 24)
-#define BM_SSP_CTRL1_DATA_CRC_IRQ (1 << 23)
-#define BM_SSP_CTRL1_DATA_CRC_IRQ_EN (1 << 22)
-#define BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ (1 << 21)
-#define BM_SSP_CTRL1_FIFO_UNDERRUN_IRQ_EN (1 << 20)
-#define BM_SSP_CTRL1_RECV_TIMEOUT_IRQ (1 << 17)
-#define BM_SSP_CTRL1_RECV_TIMEOUT_IRQ_EN (1 << 16)
-#define BM_SSP_CTRL1_FIFO_OVERRUN_IRQ (1 << 15)
-#define BM_SSP_CTRL1_FIFO_OVERRUN_IRQ_EN (1 << 14)
-#define BM_SSP_CTRL1_DMA_ENABLE (1 << 13)
-#define BM_SSP_CTRL1_POLARITY (1 << 9)
-#define BP_SSP_CTRL1_WORD_LENGTH (4)
-#define BM_SSP_CTRL1_WORD_LENGTH (0xf << 4)
-#define BP_SSP_CTRL1_SSP_MODE (0)
-#define BM_SSP_CTRL1_SSP_MODE (0xf)
-#define HW_SSP_SDRESP0(h) (ssp_is_old(h) ? 0x080 : 0x0a0)
-#define HW_SSP_SDRESP1(h) (ssp_is_old(h) ? 0x090 : 0x0b0)
-#define HW_SSP_SDRESP2(h) (ssp_is_old(h) ? 0x0a0 : 0x0c0)
-#define HW_SSP_SDRESP3(h) (ssp_is_old(h) ? 0x0b0 : 0x0d0)
-#define HW_SSP_STATUS(h) (ssp_is_old(h) ? 0x0c0 : 0x100)
-#define BM_SSP_STATUS_CARD_DETECT (1 << 28)
-#define BM_SSP_STATUS_SDIO_IRQ (1 << 17)
-
-#define BF_SSP(value, field) (((value) << BP_SSP_##field) & BM_SSP_##field)
-
#define MXS_MMC_IRQ_BITS (BM_SSP_CTRL1_SDIO_IRQ | \
BM_SSP_CTRL1_RESP_ERR_IRQ | \
BM_SSP_CTRL1_RESP_TIMEOUT_IRQ | \
BM_SSP_CTRL1_RECV_TIMEOUT_IRQ | \
BM_SSP_CTRL1_FIFO_OVERRUN_IRQ)
-#define SSP_PIO_NUM 3
-
-enum mxs_mmc_id {
- IMX23_MMC,
- IMX28_MMC,
-};
+/* card detect polling timeout */
+#define MXS_MMC_DETECT_TIMEOUT (HZ/2)
struct mxs_mmc_host {
+ struct mxs_ssp ssp;
+
struct mmc_host *mmc;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
- void __iomem *base;
int dma_channel;
- struct clk *clk;
- unsigned int clk_rate;
-
struct dma_chan *dmach;
struct mxs_dma_data dma_data;
unsigned int dma_dir;
enum dma_transfer_direction slave_dirn;
u32 ssp_pio_words[SSP_PIO_NUM];
- enum mxs_mmc_id devid;
unsigned char bus_width;
spinlock_t lock;
int sdio_irq_en;
static int mxs_mmc_get_cd(struct mmc_host *mmc)
{
struct mxs_mmc_host *host = mmc_priv(mmc);
+ struct mxs_ssp *ssp = &host->ssp;
- return !(readl(host->base + HW_SSP_STATUS(host)) &
+ return !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
BM_SSP_STATUS_CARD_DETECT);
}
static void mxs_mmc_reset(struct mxs_mmc_host *host)
{
+ struct mxs_ssp *ssp = &host->ssp;
u32 ctrl0, ctrl1;
- stmp_reset_block(host->base);
+ stmp_reset_block(ssp->base);
ctrl0 = BM_SSP_CTRL0_IGNORE_CRC;
ctrl1 = BF_SSP(0x3, CTRL1_SSP_MODE) |
writel(BF_SSP(0xffff, TIMING_TIMEOUT) |
BF_SSP(2, TIMING_CLOCK_DIVIDE) |
BF_SSP(0, TIMING_CLOCK_RATE),
- host->base + HW_SSP_TIMING(host));
+ ssp->base + HW_SSP_TIMING(ssp));
if (host->sdio_irq_en) {
ctrl0 |= BM_SSP_CTRL0_SDIO_IRQ_CHECK;
ctrl1 |= BM_SSP_CTRL1_SDIO_IRQ_EN;
}
- writel(ctrl0, host->base + HW_SSP_CTRL0);
- writel(ctrl1, host->base + HW_SSP_CTRL1(host));
+ writel(ctrl0, ssp->base + HW_SSP_CTRL0);
+ writel(ctrl1, ssp->base + HW_SSP_CTRL1(ssp));
}
static void mxs_mmc_start_cmd(struct mxs_mmc_host *host,
struct mmc_command *cmd = host->cmd;
struct mmc_data *data = host->data;
struct mmc_request *mrq = host->mrq;
+ struct mxs_ssp *ssp = &host->ssp;
if (mmc_resp_type(cmd) & MMC_RSP_PRESENT) {
if (mmc_resp_type(cmd) & MMC_RSP_136) {
- cmd->resp[3] = readl(host->base + HW_SSP_SDRESP0(host));
- cmd->resp[2] = readl(host->base + HW_SSP_SDRESP1(host));
- cmd->resp[1] = readl(host->base + HW_SSP_SDRESP2(host));
- cmd->resp[0] = readl(host->base + HW_SSP_SDRESP3(host));
+ cmd->resp[3] = readl(ssp->base + HW_SSP_SDRESP0(ssp));
+ cmd->resp[2] = readl(ssp->base + HW_SSP_SDRESP1(ssp));
+ cmd->resp[1] = readl(ssp->base + HW_SSP_SDRESP2(ssp));
+ cmd->resp[0] = readl(ssp->base + HW_SSP_SDRESP3(ssp));
} else {
- cmd->resp[0] = readl(host->base + HW_SSP_SDRESP0(host));
+ cmd->resp[0] = readl(ssp->base + HW_SSP_SDRESP0(ssp));
}
}
struct mxs_mmc_host *host = dev_id;
struct mmc_command *cmd = host->cmd;
struct mmc_data *data = host->data;
+ struct mxs_ssp *ssp = &host->ssp;
u32 stat;
spin_lock(&host->lock);
- stat = readl(host->base + HW_SSP_CTRL1(host));
+ stat = readl(ssp->base + HW_SSP_CTRL1(ssp));
writel(stat & MXS_MMC_IRQ_BITS,
- host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_CLR);
+ ssp->base + HW_SSP_CTRL1(ssp) + STMP_OFFSET_REG_CLR);
if ((stat & BM_SSP_CTRL1_SDIO_IRQ) && (stat & BM_SSP_CTRL1_SDIO_IRQ_EN))
mmc_signal_sdio_irq(host->mmc);
unsigned int data_size = 0, log2_blksz;
unsigned int blocks = data->blocks;
+ struct mxs_ssp *ssp = &host->ssp;
+
u32 ignore_crc, get_resp, long_resp, read;
u32 ctrl0, cmd0, cmd1, val;
blocks = 1;
/* xfer count, block size and count need to be set differently */
- if (ssp_is_old(host)) {
+ if (ssp_is_old(ssp)) {
ctrl0 |= BF_SSP(data_size, CTRL0_XFER_COUNT);
cmd0 |= BF_SSP(log2_blksz, CMD0_BLOCK_SIZE) |
BF_SSP(blocks - 1, CMD0_BLOCK_COUNT);
} else {
- writel(data_size, host->base + HW_SSP_XFER_SIZE);
+ writel(data_size, ssp->base + HW_SSP_XFER_SIZE);
writel(BF_SSP(log2_blksz, BLOCK_SIZE_BLOCK_SIZE) |
BF_SSP(blocks - 1, BLOCK_SIZE_BLOCK_COUNT),
- host->base + HW_SSP_BLOCK_SIZE);
+ ssp->base + HW_SSP_BLOCK_SIZE);
}
if ((cmd->opcode == MMC_STOP_TRANSMISSION) ||
}
/* set the timeout count */
- timeout = mxs_ns_to_ssp_ticks(host->clk_rate, data->timeout_ns);
- val = readl(host->base + HW_SSP_TIMING(host));
+ timeout = mxs_ns_to_ssp_ticks(ssp->clk_rate, data->timeout_ns);
+ val = readl(ssp->base + HW_SSP_TIMING(ssp));
val &= ~(BM_SSP_TIMING_TIMEOUT);
val |= BF_SSP(timeout, TIMING_TIMEOUT);
- writel(val, host->base + HW_SSP_TIMING(host));
+ writel(val, ssp->base + HW_SSP_TIMING(ssp));
/* pio */
host->ssp_pio_words[0] = ctrl0;
mxs_mmc_start_cmd(host, mrq->cmd);
}
-static void mxs_mmc_set_clk_rate(struct mxs_mmc_host *host, unsigned int rate)
-{
- unsigned int ssp_clk, ssp_sck;
- u32 clock_divide, clock_rate;
- u32 val;
-
- ssp_clk = clk_get_rate(host->clk);
-
- for (clock_divide = 2; clock_divide <= 254; clock_divide += 2) {
- clock_rate = DIV_ROUND_UP(ssp_clk, rate * clock_divide);
- clock_rate = (clock_rate > 0) ? clock_rate - 1 : 0;
- if (clock_rate <= 255)
- break;
- }
-
- if (clock_divide > 254) {
- dev_err(mmc_dev(host->mmc),
- "%s: cannot set clock to %d\n", __func__, rate);
- return;
- }
-
- ssp_sck = ssp_clk / clock_divide / (1 + clock_rate);
-
- val = readl(host->base + HW_SSP_TIMING(host));
- val &= ~(BM_SSP_TIMING_CLOCK_DIVIDE | BM_SSP_TIMING_CLOCK_RATE);
- val |= BF_SSP(clock_divide, TIMING_CLOCK_DIVIDE);
- val |= BF_SSP(clock_rate, TIMING_CLOCK_RATE);
- writel(val, host->base + HW_SSP_TIMING(host));
-
- host->clk_rate = ssp_sck;
-
- dev_dbg(mmc_dev(host->mmc),
- "%s: clock_divide %d, clock_rate %d, ssp_clk %d, rate_actual %d, rate_requested %d\n",
- __func__, clock_divide, clock_rate, ssp_clk, ssp_sck, rate);
-}
-
static void mxs_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct mxs_mmc_host *host = mmc_priv(mmc);
host->bus_width = 0;
if (ios->clock)
- mxs_mmc_set_clk_rate(host, ios->clock);
+ mxs_ssp_set_clk_rate(&host->ssp, ios->clock);
}
static void mxs_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct mxs_mmc_host *host = mmc_priv(mmc);
+ struct mxs_ssp *ssp = &host->ssp;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (enable) {
writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK,
- host->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_SET);
+ ssp->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_SET);
writel(BM_SSP_CTRL1_SDIO_IRQ_EN,
- host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_SET);
+ ssp->base + HW_SSP_CTRL1(ssp) + STMP_OFFSET_REG_SET);
- if (readl(host->base + HW_SSP_STATUS(host)) &
+ if (readl(ssp->base + HW_SSP_STATUS(ssp)) &
BM_SSP_STATUS_SDIO_IRQ)
mmc_signal_sdio_irq(host->mmc);
} else {
writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK,
- host->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_CLR);
+ ssp->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_CLR);
writel(BM_SSP_CTRL1_SDIO_IRQ_EN,
- host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_CLR);
+ ssp->base + HW_SSP_CTRL1(ssp) + STMP_OFFSET_REG_CLR);
}
spin_unlock_irqrestore(&host->lock, flags);
return true;
}
-static struct platform_device_id mxs_mmc_ids[] = {
+static struct platform_device_id mxs_ssp_ids[] = {
{
.name = "imx23-mmc",
- .driver_data = IMX23_MMC,
+ .driver_data = IMX23_SSP,
}, {
.name = "imx28-mmc",
- .driver_data = IMX28_MMC,
+ .driver_data = IMX28_SSP,
}, {
/* sentinel */
}
};
-MODULE_DEVICE_TABLE(platform, mxs_mmc_ids);
+MODULE_DEVICE_TABLE(platform, mxs_ssp_ids);
static const struct of_device_id mxs_mmc_dt_ids[] = {
- { .compatible = "fsl,imx23-mmc", .data = (void *) IMX23_MMC, },
- { .compatible = "fsl,imx28-mmc", .data = (void *) IMX28_MMC, },
+ { .compatible = "fsl,imx23-mmc", .data = (void *) IMX23_SSP, },
+ { .compatible = "fsl,imx28-mmc", .data = (void *) IMX28_SSP, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxs_mmc_dt_ids);
dma_cap_mask_t mask;
struct regulator *reg_vmmc;
enum of_gpio_flags flags;
+ struct mxs_ssp *ssp;
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
return -ENOMEM;
host = mmc_priv(mmc);
- host->base = devm_request_and_ioremap(&pdev->dev, iores);
- if (!host->base) {
+ ssp = &host->ssp;
+ ssp->dev = &pdev->dev;
+ ssp->base = devm_request_and_ioremap(&pdev->dev, iores);
+ if (!ssp->base) {
ret = -EADDRNOTAVAIL;
goto out_mmc_free;
}
if (np) {
- host->devid = (enum mxs_mmc_id) of_id->data;
+ ssp->devid = (enum mxs_ssp_id) of_id->data;
/*
* TODO: This is a temporary solution and should be changed
* to use generic DMA binding later when the helpers get in.
goto out_mmc_free;
}
} else {
- host->devid = pdev->id_entry->driver_data;
+ ssp->devid = pdev->id_entry->driver_data;
host->dma_channel = dmares->start;
}
goto out_mmc_free;
}
- host->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(host->clk)) {
- ret = PTR_ERR(host->clk);
+ ssp->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(ssp->clk)) {
+ ret = PTR_ERR(ssp->clk);
goto out_mmc_free;
}
- clk_prepare_enable(host->clk);
+ clk_prepare_enable(ssp->clk);
mxs_mmc_reset(host);
mmc->max_segs = 52;
mmc->max_blk_size = 1 << 0xf;
- mmc->max_blk_count = (ssp_is_old(host)) ? 0xff : 0xffffff;
- mmc->max_req_size = (ssp_is_old(host)) ? 0xffff : 0xffffffff;
+ mmc->max_blk_count = (ssp_is_old(ssp)) ? 0xff : 0xffffff;
+ mmc->max_req_size = (ssp_is_old(ssp)) ? 0xffff : 0xffffffff;
mmc->max_seg_size = dma_get_max_seg_size(host->dmach->device->dev);
platform_set_drvdata(pdev, mmc);
if (host->dmach)
dma_release_channel(host->dmach);
out_clk_put:
- clk_disable_unprepare(host->clk);
- clk_put(host->clk);
+ clk_disable_unprepare(ssp->clk);
+ clk_put(ssp->clk);
out_mmc_free:
mmc_free_host(mmc);
return ret;
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct mxs_mmc_host *host = mmc_priv(mmc);
+ struct mxs_ssp *ssp = &host->ssp;
mmc_remove_host(mmc);
if (host->dmach)
dma_release_channel(host->dmach);
- clk_disable_unprepare(host->clk);
- clk_put(host->clk);
+ clk_disable_unprepare(ssp->clk);
+ clk_put(ssp->clk);
mmc_free_host(mmc);
{
struct mmc_host *mmc = dev_get_drvdata(dev);
struct mxs_mmc_host *host = mmc_priv(mmc);
+ struct mxs_ssp *ssp = &host->ssp;
int ret = 0;
ret = mmc_suspend_host(mmc);
- clk_disable_unprepare(host->clk);
+ clk_disable_unprepare(ssp->clk);
return ret;
}
{
struct mmc_host *mmc = dev_get_drvdata(dev);
struct mxs_mmc_host *host = mmc_priv(mmc);
+ struct mxs_ssp *ssp = &host->ssp;
int ret = 0;
- clk_prepare_enable(host->clk);
+ clk_prepare_enable(ssp->clk);
ret = mmc_resume_host(mmc);
static struct platform_driver mxs_mmc_driver = {
.probe = mxs_mmc_probe,
.remove = mxs_mmc_remove,
- .id_table = mxs_mmc_ids,
+ .id_table = mxs_ssp_ids,
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
projects / firefly-linux-kernel-4.4.55.git / blobdiff