Merge branch 'samsung/exynos5' into next/soc2
[linux-2.6.git] / arch / arm / mach-ux500 / usb.c
1 /*
2  * Copyright (C) ST-Ericsson SA 2011
3  *
4  * Author: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
5  * License terms: GNU General Public License (GPL) version 2
6  */
7 #include <linux/platform_device.h>
8 #include <linux/usb/musb.h>
9 #include <linux/dma-mapping.h>
10
11 #include <plat/ste_dma40.h>
12 #include <mach/hardware.h>
13 #include <mach/usb.h>
14
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, \
23         }
24
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, \
33         }
34
35 static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS]
36         = {
37         MUSB_DMA40_RX_CH,
38         MUSB_DMA40_RX_CH,
39         MUSB_DMA40_RX_CH,
40         MUSB_DMA40_RX_CH,
41         MUSB_DMA40_RX_CH,
42         MUSB_DMA40_RX_CH,
43         MUSB_DMA40_RX_CH,
44         MUSB_DMA40_RX_CH
45 };
46
47 static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS]
48         = {
49         MUSB_DMA40_TX_CH,
50         MUSB_DMA40_TX_CH,
51         MUSB_DMA40_TX_CH,
52         MUSB_DMA40_TX_CH,
53         MUSB_DMA40_TX_CH,
54         MUSB_DMA40_TX_CH,
55         MUSB_DMA40_TX_CH,
56         MUSB_DMA40_TX_CH,
57 };
58
59 static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = {
60         &musb_dma_rx_ch[0],
61         &musb_dma_rx_ch[1],
62         &musb_dma_rx_ch[2],
63         &musb_dma_rx_ch[3],
64         &musb_dma_rx_ch[4],
65         &musb_dma_rx_ch[5],
66         &musb_dma_rx_ch[6],
67         &musb_dma_rx_ch[7]
68 };
69
70 static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = {
71         &musb_dma_tx_ch[0],
72         &musb_dma_tx_ch[1],
73         &musb_dma_tx_ch[2],
74         &musb_dma_tx_ch[3],
75         &musb_dma_tx_ch[4],
76         &musb_dma_tx_ch[5],
77         &musb_dma_tx_ch[6],
78         &musb_dma_tx_ch[7]
79 };
80
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,
87 };
88
89 static u64 ux500_musb_dmamask = DMA_BIT_MASK(32);
90
91 static struct musb_hdrc_config musb_hdrc_config = {
92         .multipoint     = true,
93         .dyn_fifo       = true,
94         .num_eps        = 16,
95         .ram_bits       = 16,
96 };
97
98 static struct musb_hdrc_platform_data musb_platform_data = {
99         .mode = MUSB_OTG,
100         .config = &musb_hdrc_config,
101         .board_data = &musb_board_data,
102 };
103
104 static struct resource usb_resources[] = {
105         [0] = {
106                 .name   = "usb-mem",
107                 .flags  =  IORESOURCE_MEM,
108         },
109
110         [1] = {
111                 .name   = "mc", /* hard-coded in musb */
112                 .flags  = IORESOURCE_IRQ,
113         },
114 };
115
116 struct platform_device ux500_musb_device = {
117         .name = "musb-ux500",
118         .id = 0,
119         .dev = {
120                 .platform_data = &musb_platform_data,
121                 .dma_mask = &ux500_musb_dmamask,
122                 .coherent_dma_mask = DMA_BIT_MASK(32),
123         },
124         .num_resources = ARRAY_SIZE(usb_resources),
125         .resource = usb_resources,
126 };
127
128 static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type)
129 {
130         u32 idx;
131
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];
134 }
135
136 static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)
137 {
138         u32 idx;
139
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];
142 }
143
144 void ux500_add_usb(struct device *parent, resource_size_t base, int irq,
145                    int *dma_rx_cfg, int *dma_tx_cfg)
146 {
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;
151
152         ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);
153         ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);
154
155         ux500_musb_device.dev.parent = parent;
156
157         platform_device_register(&ux500_musb_device);
158 }