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authorJassi Brar <jassi.brar@samsung.com>2010-05-18 03:43:37 -0400
committerBen Dooks <ben-linux@fluff.org>2010-05-20 06:31:10 -0400
commitf0c303a68701a5df53a8672eb81a85c8a41096da (patch)
tree9aea14ed46b842ea33693ca193e964724d83333a /arch/arm/mach-s5pv210
parent7c3943f6d3625a2823262842e18387c4079a3f84 (diff)
ARM: S5PV210: Define SPI platform devices
Define SPI platform devices for the SoC. Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s5pv210')
-rw-r--r--arch/arm/mach-s5pv210/Makefile1
-rw-r--r--arch/arm/mach-s5pv210/dev-spi.c178
-rw-r--r--arch/arm/mach-s5pv210/include/mach/map.h4
-rw-r--r--arch/arm/mach-s5pv210/include/mach/spi-clocks.h17
4 files changed, 200 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile
index 99827813d293..ba0d7091343b 100644
--- a/arch/arm/mach-s5pv210/Makefile
+++ b/arch/arm/mach-s5pv210/Makefile
@@ -23,3 +23,4 @@ obj-$(CONFIG_MACH_SMDKC110) += mach-smdkc110.o
23# device support 23# device support
24 24
25obj-y += dev-audio.o 25obj-y += dev-audio.o
26obj-$(CONFIG_S3C64XX_DEV_SPI) += dev-spi.o
diff --git a/arch/arm/mach-s5pv210/dev-spi.c b/arch/arm/mach-s5pv210/dev-spi.c
new file mode 100644
index 000000000000..337a62b57a0b
--- /dev/null
+++ b/arch/arm/mach-s5pv210/dev-spi.c
@@ -0,0 +1,178 @@
1/* linux/arch/arm/mach-s5pv210/dev-spi.c
2 *
3 * Copyright (C) 2010 Samsung Electronics Co. Ltd.
4 * Jaswinder Singh <jassi.brar@samsung.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/platform_device.h>
12#include <linux/dma-mapping.h>
13
14#include <mach/dma.h>
15#include <mach/map.h>
16#include <mach/irqs.h>
17#include <mach/gpio.h>
18#include <mach/spi-clocks.h>
19
20#include <plat/s3c64xx-spi.h>
21#include <plat/gpio-cfg.h>
22
23static char *spi_src_clks[] = {
24 [S5PV210_SPI_SRCCLK_PCLK] = "pclk",
25 [S5PV210_SPI_SRCCLK_SCLK] = "sclk_spi",
26};
27
28/* SPI Controller platform_devices */
29
30/* Since we emulate multi-cs capability, we do not touch the CS.
31 * The emulated CS is toggled by board specific mechanism, as it can
32 * be either some immediate GPIO or some signal out of some other
33 * chip in between ... or some yet another way.
34 * We simply do not assume anything about CS.
35 */
36static int s5pv210_spi_cfg_gpio(struct platform_device *pdev)
37{
38 switch (pdev->id) {
39 case 0:
40 s3c_gpio_cfgpin(S5PV210_GPB(0), S3C_GPIO_SFN(2));
41 s3c_gpio_cfgpin(S5PV210_GPB(1), S3C_GPIO_SFN(2));
42 s3c_gpio_cfgpin(S5PV210_GPB(2), S3C_GPIO_SFN(2));
43 s3c_gpio_setpull(S5PV210_GPB(0), S3C_GPIO_PULL_UP);
44 s3c_gpio_setpull(S5PV210_GPB(1), S3C_GPIO_PULL_UP);
45 s3c_gpio_setpull(S5PV210_GPB(2), S3C_GPIO_PULL_UP);
46 break;
47
48 case 1:
49 s3c_gpio_cfgpin(S5PV210_GPB(4), S3C_GPIO_SFN(2));
50 s3c_gpio_cfgpin(S5PV210_GPB(5), S3C_GPIO_SFN(2));
51 s3c_gpio_cfgpin(S5PV210_GPB(6), S3C_GPIO_SFN(2));
52 s3c_gpio_setpull(S5PV210_GPB(4), S3C_GPIO_PULL_UP);
53 s3c_gpio_setpull(S5PV210_GPB(5), S3C_GPIO_PULL_UP);
54 s3c_gpio_setpull(S5PV210_GPB(6), S3C_GPIO_PULL_UP);
55 break;
56
57 default:
58 dev_err(&pdev->dev, "Invalid SPI Controller number!");
59 return -EINVAL;
60 }
61
62 return 0;
63}
64
65static struct resource s5pv210_spi0_resource[] = {
66 [0] = {
67 .start = S5PV210_PA_SPI0,
68 .end = S5PV210_PA_SPI0 + 0x100 - 1,
69 .flags = IORESOURCE_MEM,
70 },
71 [1] = {
72 .start = DMACH_SPI0_TX,
73 .end = DMACH_SPI0_TX,
74 .flags = IORESOURCE_DMA,
75 },
76 [2] = {
77 .start = DMACH_SPI0_RX,
78 .end = DMACH_SPI0_RX,
79 .flags = IORESOURCE_DMA,
80 },
81 [3] = {
82 .start = IRQ_SPI0,
83 .end = IRQ_SPI0,
84 .flags = IORESOURCE_IRQ,
85 },
86};
87
88static struct s3c64xx_spi_info s5pv210_spi0_pdata = {
89 .cfg_gpio = s5pv210_spi_cfg_gpio,
90 .fifo_lvl_mask = 0x1ff,
91 .rx_lvl_offset = 15,
92 .high_speed = 1,
93};
94
95static u64 spi_dmamask = DMA_BIT_MASK(32);
96
97struct platform_device s5pv210_device_spi0 = {
98 .name = "s3c64xx-spi",
99 .id = 0,
100 .num_resources = ARRAY_SIZE(s5pv210_spi0_resource),
101 .resource = s5pv210_spi0_resource,
102 .dev = {
103 .dma_mask = &spi_dmamask,
104 .coherent_dma_mask = DMA_BIT_MASK(32),
105 .platform_data = &s5pv210_spi0_pdata,
106 },
107};
108
109static struct resource s5pv210_spi1_resource[] = {
110 [0] = {
111 .start = S5PV210_PA_SPI1,
112 .end = S5PV210_PA_SPI1 + 0x100 - 1,
113 .flags = IORESOURCE_MEM,
114 },
115 [1] = {
116 .start = DMACH_SPI1_TX,
117 .end = DMACH_SPI1_TX,
118 .flags = IORESOURCE_DMA,
119 },
120 [2] = {
121 .start = DMACH_SPI1_RX,
122 .end = DMACH_SPI1_RX,
123 .flags = IORESOURCE_DMA,
124 },
125 [3] = {
126 .start = IRQ_SPI1,
127 .end = IRQ_SPI1,
128 .flags = IORESOURCE_IRQ,
129 },
130};
131
132static struct s3c64xx_spi_info s5pv210_spi1_pdata = {
133 .cfg_gpio = s5pv210_spi_cfg_gpio,
134 .fifo_lvl_mask = 0x7f,
135 .rx_lvl_offset = 15,
136 .high_speed = 1,
137};
138
139struct platform_device s5pv210_device_spi1 = {
140 .name = "s3c64xx-spi",
141 .id = 1,
142 .num_resources = ARRAY_SIZE(s5pv210_spi1_resource),
143 .resource = s5pv210_spi1_resource,
144 .dev = {
145 .dma_mask = &spi_dmamask,
146 .coherent_dma_mask = DMA_BIT_MASK(32),
147 .platform_data = &s5pv210_spi1_pdata,
148 },
149};
150
151void __init s5pv210_spi_set_info(int cntrlr, int src_clk_nr, int num_cs)
152{
153 struct s3c64xx_spi_info *pd;
154
155 /* Reject invalid configuration */
156 if (!num_cs || src_clk_nr < 0
157 || src_clk_nr > S5PV210_SPI_SRCCLK_SCLK) {
158 printk(KERN_ERR "%s: Invalid SPI configuration\n", __func__);
159 return;
160 }
161
162 switch (cntrlr) {
163 case 0:
164 pd = &s5pv210_spi0_pdata;
165 break;
166 case 1:
167 pd = &s5pv210_spi1_pdata;
168 break;
169 default:
170 printk(KERN_ERR "%s: Invalid SPI controller(%d)\n",
171 __func__, cntrlr);
172 return;
173 }
174
175 pd->num_cs = num_cs;
176 pd->src_clk_nr = src_clk_nr;
177 pd->src_clk_name = spi_src_clks[src_clk_nr];
178}
diff --git a/arch/arm/mach-s5pv210/include/mach/map.h b/arch/arm/mach-s5pv210/include/mach/map.h
index 5adcb9f26e44..9ab0069d1a7e 100644
--- a/arch/arm/mach-s5pv210/include/mach/map.h
+++ b/arch/arm/mach-s5pv210/include/mach/map.h
@@ -25,6 +25,10 @@
25#define S5PV210_PA_GPIO (0xE0200000) 25#define S5PV210_PA_GPIO (0xE0200000)
26#define S5P_PA_GPIO S5PV210_PA_GPIO 26#define S5P_PA_GPIO S5PV210_PA_GPIO
27 27
28/* SPI */
29#define S5PV210_PA_SPI0 0xE1300000
30#define S5PV210_PA_SPI1 0xE1400000
31
28#define S5PV210_PA_IIC0 (0xE1800000) 32#define S5PV210_PA_IIC0 (0xE1800000)
29 33
30#define S5PV210_PA_TIMER (0xE2500000) 34#define S5PV210_PA_TIMER (0xE2500000)
diff --git a/arch/arm/mach-s5pv210/include/mach/spi-clocks.h b/arch/arm/mach-s5pv210/include/mach/spi-clocks.h
new file mode 100644
index 000000000000..02acded5f73d
--- /dev/null
+++ b/arch/arm/mach-s5pv210/include/mach/spi-clocks.h
@@ -0,0 +1,17 @@
1/* linux/arch/arm/mach-s5pv210/include/mach/spi-clocks.h
2 *
3 * Copyright (C) 2010 Samsung Electronics Co. Ltd.
4 * Jaswinder Singh <jassi.brar@samsung.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef __S5PV210_PLAT_SPI_CLKS_H
12#define __S5PV210_PLAT_SPI_CLKS_H __FILE__
13
14#define S5PV210_SPI_SRCCLK_PCLK 0
15#define S5PV210_SPI_SRCCLK_SCLK 1
16
17#endif /* __S5PV210_PLAT_SPI_CLKS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 20:39:13 -0500