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authorMian Yousaf Kaukab <mian-yousaf.kaukab@linaro.org>2011-01-21 11:59:56 -0500
committerLinus Walleij <linus.walleij@linaro.org>2011-03-14 09:05:11 -0400
commit07f201d8a30b077b536a9bbc6788724aa8973e31 (patch)
treea1ad5560d2cb57c94ac6bedc2abcccbdc27d46fd /arch/arm/mach-ux500
parent7863513efc4b2829a9d3768b37fdcd46842ac8e6 (diff)
mach-ux500: add platform data for musb
USB resources and DMA40 configurations are dynamically with the data provided in ux500_add_usb() call. Though only DMA40 configurations differ between U8500 and U5500 (USB resource are common between them). Signed-off-by: Mian Yousaf Kaukab <mian-yousaf.kaukab@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-ux500')
-rw-r--r--arch/arm/mach-ux500/Makefile2
-rw-r--r--arch/arm/mach-ux500/include/mach/usb.h25
-rw-r--r--arch/arm/mach-ux500/usb.c160
3 files changed, 186 insertions, 1 deletions
diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile
index 1cb588efec82..eec327906686 100644
--- a/arch/arm/mach-ux500/Makefile
+++ b/arch/arm/mach-ux500/Makefile
@@ -3,7 +3,7 @@
3# 3#
4 4
5obj-y := clock.o cpu.o devices.o devices-common.o \ 5obj-y := clock.o cpu.o devices.o devices-common.o \
6 id.o 6 id.o usb.o
7obj-$(CONFIG_UX500_SOC_DB5500) += cpu-db5500.o dma-db5500.o 7obj-$(CONFIG_UX500_SOC_DB5500) += cpu-db5500.o dma-db5500.o
8obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o devices-db8500.o prcmu.o 8obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o devices-db8500.o prcmu.o
9obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \ 9obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \
diff --git a/arch/arm/mach-ux500/include/mach/usb.h b/arch/arm/mach-ux500/include/mach/usb.h
new file mode 100644
index 000000000000..d3739d418813
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/usb.h
@@ -0,0 +1,25 @@
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#ifndef __ASM_ARCH_USB_H
8#define __ASM_ARCH_USB_H
9
10#include <linux/dmaengine.h>
11
12#define UX500_MUSB_DMA_NUM_RX_CHANNELS 8
13#define UX500_MUSB_DMA_NUM_TX_CHANNELS 8
14
15struct ux500_musb_board_data {
16 void **dma_rx_param_array;
17 void **dma_tx_param_array;
18 u32 num_rx_channels;
19 u32 num_tx_channels;
20 bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
21};
22
23void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,
24 int *dma_tx_cfg);
25#endif
diff --git a/arch/arm/mach-ux500/usb.c b/arch/arm/mach-ux500/usb.c
new file mode 100644
index 000000000000..82e535953fd9
--- /dev/null
+++ b/arch/arm/mach-ux500/usb.c
@@ -0,0 +1,160 @@
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 <plat/ste_dma40.h>
10#include <mach/hardware.h>
11#include <mach/usb.h>
12
13#define MUSB_DMA40_RX_CH { \
14 .mode = STEDMA40_MODE_LOGICAL, \
15 .dir = STEDMA40_PERIPH_TO_MEM, \
16 .dst_dev_type = STEDMA40_DEV_DST_MEMORY, \
17 .src_info.data_width = STEDMA40_WORD_WIDTH, \
18 .dst_info.data_width = STEDMA40_WORD_WIDTH, \
19 .src_info.psize = STEDMA40_PSIZE_LOG_16, \
20 .dst_info.psize = STEDMA40_PSIZE_LOG_16, \
21 }
22
23#define MUSB_DMA40_TX_CH { \
24 .mode = STEDMA40_MODE_LOGICAL, \
25 .dir = STEDMA40_MEM_TO_PERIPH, \
26 .src_dev_type = STEDMA40_DEV_SRC_MEMORY, \
27 .src_info.data_width = STEDMA40_WORD_WIDTH, \
28 .dst_info.data_width = STEDMA40_WORD_WIDTH, \
29 .src_info.psize = STEDMA40_PSIZE_LOG_16, \
30 .dst_info.psize = STEDMA40_PSIZE_LOG_16, \
31 }
32
33static struct stedma40_chan_cfg musb_dma_rx_ch[UX500_MUSB_DMA_NUM_RX_CHANNELS]
34 = {
35 MUSB_DMA40_RX_CH,
36 MUSB_DMA40_RX_CH,
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};
44
45static struct stedma40_chan_cfg musb_dma_tx_ch[UX500_MUSB_DMA_NUM_TX_CHANNELS]
46 = {
47 MUSB_DMA40_TX_CH,
48 MUSB_DMA40_TX_CH,
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};
56
57static void *ux500_dma_rx_param_array[UX500_MUSB_DMA_NUM_RX_CHANNELS] = {
58 &musb_dma_rx_ch[0],
59 &musb_dma_rx_ch[1],
60 &musb_dma_rx_ch[2],
61 &musb_dma_rx_ch[3],
62 &musb_dma_rx_ch[4],
63 &musb_dma_rx_ch[5],
64 &musb_dma_rx_ch[6],
65 &musb_dma_rx_ch[7]
66};
67
68static void *ux500_dma_tx_param_array[UX500_MUSB_DMA_NUM_TX_CHANNELS] = {
69 &musb_dma_tx_ch[0],
70 &musb_dma_tx_ch[1],
71 &musb_dma_tx_ch[2],
72 &musb_dma_tx_ch[3],
73 &musb_dma_tx_ch[4],
74 &musb_dma_tx_ch[5],
75 &musb_dma_tx_ch[6],
76 &musb_dma_tx_ch[7]
77};
78
79static struct ux500_musb_board_data musb_board_data = {
80 .dma_rx_param_array = ux500_dma_rx_param_array,
81 .dma_tx_param_array = ux500_dma_tx_param_array,
82 .num_rx_channels = UX500_MUSB_DMA_NUM_RX_CHANNELS,
83 .num_tx_channels = UX500_MUSB_DMA_NUM_TX_CHANNELS,
84 .dma_filter = stedma40_filter,
85};
86
87static u64 ux500_musb_dmamask = DMA_BIT_MASK(32);
88
89static struct musb_hdrc_config musb_hdrc_config = {
90 .multipoint = true,
91 .dyn_fifo = true,
92 .num_eps = 16,
93 .ram_bits = 16,
94};
95
96static struct musb_hdrc_platform_data musb_platform_data = {
97#if defined(CONFIG_USB_MUSB_OTG)
98 .mode = MUSB_OTG,
99#elif defined(CONFIG_USB_MUSB_PERIPHERAL)
100 .mode = MUSB_PERIPHERAL,
101#else /* defined(CONFIG_USB_MUSB_HOST) */
102 .mode = MUSB_HOST,
103#endif
104 .config = &musb_hdrc_config,
105 .board_data = &musb_board_data,
106};
107
108static struct resource usb_resources[] = {
109 [0] = {
110 .name = "usb-mem",
111 .flags = IORESOURCE_MEM,
112 },
113
114 [1] = {
115 .name = "mc", /* hard-coded in musb */
116 .flags = IORESOURCE_IRQ,
117 },
118};
119
120struct platform_device ux500_musb_device = {
121 .name = "musb-ux500",
122 .id = 0,
123 .dev = {
124 .platform_data = &musb_platform_data,
125 .dma_mask = &ux500_musb_dmamask,
126 .coherent_dma_mask = DMA_BIT_MASK(32),
127 },
128 .num_resources = ARRAY_SIZE(usb_resources),
129 .resource = usb_resources,
130};
131
132static inline void ux500_usb_dma_update_rx_ch_config(int *src_dev_type)
133{
134 u32 idx;
135
136 for (idx = 0; idx < UX500_MUSB_DMA_NUM_RX_CHANNELS; idx++)
137 musb_dma_rx_ch[idx].src_dev_type = src_dev_type[idx];
138}
139
140static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type)
141{
142 u32 idx;
143
144 for (idx = 0; idx < UX500_MUSB_DMA_NUM_TX_CHANNELS; idx++)
145 musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx];
146}
147
148void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg,
149 int *dma_tx_cfg)
150{
151 ux500_musb_device.resource[0].start = base;
152 ux500_musb_device.resource[0].end = base + SZ_64K - 1;
153 ux500_musb_device.resource[1].start = irq;
154 ux500_musb_device.resource[1].end = irq;
155
156 ux500_usb_dma_update_rx_ch_config(dma_rx_cfg);
157 ux500_usb_dma_update_tx_ch_config(dma_tx_cfg);
158
159 platform_device_register(&ux500_musb_device);
160}
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