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 <plat/ste_dma40.h>
11 #include <mach/hardware.h>
14 #define MUSB_DMA40_RX_CH { \
15 .mode = STEDMA40_MODE_LOGICAL, \
16 .dir = STEDMA40_PERIPH_TO_MEM, \
17 .dst_dev_type = STEDMA40_DEV_DST_MEMORY, \
18 .src_info.data_width = STEDMA40_WORD_WIDTH, \
19 .dst_info.data_width = STEDMA40_WORD_WIDTH, \
20 .src_info.psize = STEDMA40_PSIZE_LOG_16, \
21 .dst_info.psize = STEDMA40_PSIZE_LOG_16, \
24 #define MUSB_DMA40_TX_CH { \
25 .mode = STEDMA40_MODE_LOGICAL, \
26 .dir = STEDMA40_MEM_TO_PERIPH, \
27 .src_dev_type = STEDMA40_DEV_SRC_MEMORY, \
28 .src_info.data_width = STEDMA40_WORD_WIDTH, \
29 .dst_info.data_width = STEDMA40_WORD_WIDTH, \
30 .src_info.psize = STEDMA40_PSIZE_LOG_16, \
31 .dst_info.psize = STEDMA40_PSIZE_LOG_16, \
34 static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS]
46 static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS]
58 static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = {
69 static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = {
80 static struct ux500_musb_board_data musb_board_data = {
81 .dma_rx_param_array = ux500_dma_rx_param_array,
82 .dma_tx_param_array = ux500_dma_tx_param_array,
83 .num_rx_channels = UX500_MUSB_DMA_NUM_RX_CHANNELS,
84 .num_tx_channels = UX500_MUSB_DMA_NUM_TX_CHANNELS,
85 .dma_filter = stedma40_filter,
88 static u64 ux500_musb_dmamask = DMA_BIT_MASK(32);
90 static struct musb_hdrc_config musb_hdrc_config = {
97 static struct musb_hdrc_platform_data musb_platform_data = {
98 #if defined(CONFIG_USB_MUSB_OTG)
100 #elif defined(CONFIG_USB_MUSB_PERIPHERAL)
101 .mode = MUSB_PERIPHERAL,
102 #else /* defined(CONFIG_USB_MUSB_HOST) */
105 .config = &musb_hdrc_config,
106 .board_data = &musb_board_data,
109 static struct resource usb_resources[] = {
112 .flags = IORESOURCE_MEM,
116 .name = "mc", /* hard-coded in musb */
117 .flags = IORESOURCE_IRQ,
121 struct platform_device ux500_musb_device = {
122 .name = "musb-ux500",
125 .platform_data = &musb_platform_data,
126 .dma_mask = &ux500_musb_dmamask,
127 .coherent_dma_mask = DMA_BIT_MASK(32),
129 .num_resources = ARRAY_SIZE(usb_resources),
130 .resource = usb_resources,
133 static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type)
137 for (idx = 0; idx < UX500_MUSB_DMA_NUM_RX_CHANNELS; idx++)
138 musb_dma_rx_ch[idx].src_dev_type = src_dev_type[idx];
141 static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)
145 for (idx = 0; idx < UX500_MUSB_DMA_NUM_TX_CHANNELS; idx++)
146 musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx];
149 void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,
152 ux500_musb_device.resource[0].start = base;
153 ux500_musb_device.resource[0].end = base + SZ_64K - 1;
154 ux500_musb_device.resource[1].start = irq;
155 ux500_musb_device.resource[1].end = irq;
157 ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);
158 ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);
160 platform_device_register(&ux500_musb_device);