2 * Copyright (C) ST-Ericsson SA 2011
4 * Author: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
5 * License terms: GNU General Public License (GPL) version 2
7 #include <linux/platform_device.h>
8 #include <linux/usb/musb.h>
9 #include <linux/dma-mapping.h>
10 #include <linux/platform_data/usb-musb-ux500.h>
11 #include <linux/platform_data/dma-ste-dma40.h>
13 #include <mach/hardware.h>
15 #define MUSB_DMA40_RX_CH { \
16 .mode = STEDMA40_MODE_LOGICAL, \
17 .dir = STEDMA40_PERIPH_TO_MEM, \
18 .dst_dev_type = STEDMA40_DEV_DST_MEMORY, \
19 .src_info.data_width = STEDMA40_WORD_WIDTH, \
20 .dst_info.data_width = STEDMA40_WORD_WIDTH, \
21 .src_info.psize = STEDMA40_PSIZE_LOG_16, \
22 .dst_info.psize = STEDMA40_PSIZE_LOG_16, \
25 #define MUSB_DMA40_TX_CH { \
26 .mode = STEDMA40_MODE_LOGICAL, \
27 .dir = STEDMA40_MEM_TO_PERIPH, \
28 .src_dev_type = STEDMA40_DEV_SRC_MEMORY, \
29 .src_info.data_width = STEDMA40_WORD_WIDTH, \
30 .dst_info.data_width = STEDMA40_WORD_WIDTH, \
31 .src_info.psize = STEDMA40_PSIZE_LOG_16, \
32 .dst_info.psize = STEDMA40_PSIZE_LOG_16, \
35 static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS]
47 static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS]
59 static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = {
70 static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = {
81 static struct ux500_musb_board_data musb_board_data = {
82 .dma_rx_param_array = ux500_dma_rx_param_array,
83 .dma_tx_param_array = ux500_dma_tx_param_array,
84 .num_rx_channels = UX500_MUSB_DMA_NUM_RX_CHANNELS,
85 .num_tx_channels = UX500_MUSB_DMA_NUM_TX_CHANNELS,
86 .dma_filter = stedma40_filter,
89 static u64 ux500_musb_dmamask = DMA_BIT_MASK(32);
91 static struct musb_hdrc_config musb_hdrc_config = {
98 static struct musb_hdrc_platform_data musb_platform_data = {
100 .config = &musb_hdrc_config,
101 .board_data = &musb_board_data,
104 static struct resource usb_resources[] = {
107 .flags = IORESOURCE_MEM,
111 .name = "mc", /* hard-coded in musb */
112 .flags = IORESOURCE_IRQ,
116 struct platform_device ux500_musb_device = {
117 .name = "musb-ux500",
120 .platform_data = &musb_platform_data,
121 .dma_mask = &ux500_musb_dmamask,
122 .coherent_dma_mask = DMA_BIT_MASK(32),
124 .num_resources = ARRAY_SIZE(usb_resources),
125 .resource = usb_resources,
128 static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type)
132 for (idx = 0; idx < UX500_MUSB_DMA_NUM_RX_CHANNELS; idx++)
133 musb_dma_rx_ch[idx].src_dev_type = src_dev_type[idx];
136 static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)
140 for (idx = 0; idx < UX500_MUSB_DMA_NUM_TX_CHANNELS; idx++)
141 musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx];
144 void ux500_add_usb(struct device *parent, resource_size_t base, int irq,
145 int *dma_rx_cfg, int *dma_tx_cfg)
147 ux500_musb_device.resource[0].start = base;
148 ux500_musb_device.resource[0].end = base + SZ_64K - 1;
149 ux500_musb_device.resource[1].start = irq;
150 ux500_musb_device.resource[1].end = irq;
152 ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);
153 ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);
155 ux500_musb_device.dev.parent = parent;
157 platform_device_register(&ux500_musb_device);