2 * linux/arch/arm/mach-omap1/devices.c
4 * OMAP1 platform device setup/initialization
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
17 #include <linux/spi/spi.h>
19 #include <mach/hardware.h>
20 #include <asm/mach/map.h>
23 #include <plat/board.h>
25 #include <mach/gpio.h>
27 #include <plat/omap7xx.h>
29 /*-------------------------------------------------------------------------*/
31 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
33 #define OMAP_RTC_BASE 0xfffb4800
35 static struct resource rtc_resources[] = {
37 .start = OMAP_RTC_BASE,
38 .end = OMAP_RTC_BASE + 0x5f,
39 .flags = IORESOURCE_MEM,
42 .start = INT_RTC_TIMER,
43 .flags = IORESOURCE_IRQ,
46 .start = INT_RTC_ALARM,
47 .flags = IORESOURCE_IRQ,
51 static struct platform_device omap_rtc_device = {
54 .num_resources = ARRAY_SIZE(rtc_resources),
55 .resource = rtc_resources,
58 static void omap_init_rtc(void)
60 (void) platform_device_register(&omap_rtc_device);
63 static inline void omap_init_rtc(void) {}
66 static inline void omap_init_mbox(void) { }
68 /*-------------------------------------------------------------------------*/
70 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
72 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
75 if (controller_nr == 0) {
76 if (cpu_is_omap7xx()) {
77 omap_cfg_reg(MMC_7XX_CMD);
78 omap_cfg_reg(MMC_7XX_CLK);
79 omap_cfg_reg(MMC_7XX_DAT0);
81 omap_cfg_reg(MMC_CMD);
82 omap_cfg_reg(MMC_CLK);
83 omap_cfg_reg(MMC_DAT0);
86 if (cpu_is_omap1710()) {
87 omap_cfg_reg(M15_1710_MMC_CLKI);
88 omap_cfg_reg(P19_1710_MMC_CMDDIR);
89 omap_cfg_reg(P20_1710_MMC_DATDIR0);
91 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
92 omap_cfg_reg(MMC_DAT1);
93 /* NOTE: DAT2 can be on W10 (here) or M15 */
94 if (!mmc_controller->slots[0].nomux)
95 omap_cfg_reg(MMC_DAT2);
96 omap_cfg_reg(MMC_DAT3);
100 /* Block 2 is on newer chips, and has many pinout options */
101 if (cpu_is_omap16xx() && controller_nr == 1) {
102 if (!mmc_controller->slots[1].nomux) {
103 omap_cfg_reg(Y8_1610_MMC2_CMD);
104 omap_cfg_reg(Y10_1610_MMC2_CLK);
105 omap_cfg_reg(R18_1610_MMC2_CLKIN);
106 omap_cfg_reg(W8_1610_MMC2_DAT0);
107 if (mmc_controller->slots[1].wires == 4) {
108 omap_cfg_reg(V8_1610_MMC2_DAT1);
109 omap_cfg_reg(W15_1610_MMC2_DAT2);
110 omap_cfg_reg(R10_1610_MMC2_DAT3);
113 /* These are needed for the level shifter */
114 omap_cfg_reg(V9_1610_MMC2_CMDDIR);
115 omap_cfg_reg(V5_1610_MMC2_DATDIR0);
116 omap_cfg_reg(W19_1610_MMC2_DATDIR1);
119 /* Feedback clock must be set on OMAP-1710 MMC2 */
120 if (cpu_is_omap1710())
121 omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
126 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
131 for (i = 0; i < nr_controllers; i++) {
132 unsigned long base, size;
133 unsigned int irq = 0;
138 omap1_mmc_mux(mmc_data[i], i);
142 base = OMAP1_MMC1_BASE;
146 if (!cpu_is_omap16xx())
148 base = OMAP1_MMC2_BASE;
154 size = OMAP1_MMC_SIZE;
156 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
162 /*-------------------------------------------------------------------------*/
164 /* OMAP7xx SPI support */
165 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
167 struct platform_device omap_spi1 = {
168 .name = "omap1_spi100k",
172 struct platform_device omap_spi2 = {
173 .name = "omap1_spi100k",
177 static void omap_init_spi100k(void)
179 omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
180 if (omap_spi1.dev.platform_data)
181 platform_device_register(&omap_spi1);
183 omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
184 if (omap_spi2.dev.platform_data)
185 platform_device_register(&omap_spi2);
189 static inline void omap_init_spi100k(void)
194 /*-------------------------------------------------------------------------*/
196 #if defined(CONFIG_OMAP_STI)
198 #define OMAP1_STI_BASE 0xfffea000
199 #define OMAP1_STI_CHANNEL_BASE (OMAP1_STI_BASE + 0x400)
201 static struct resource sti_resources[] = {
203 .start = OMAP1_STI_BASE,
204 .end = OMAP1_STI_BASE + SZ_1K - 1,
205 .flags = IORESOURCE_MEM,
208 .start = OMAP1_STI_CHANNEL_BASE,
209 .end = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
210 .flags = IORESOURCE_MEM,
213 .start = INT_1610_STI,
214 .flags = IORESOURCE_IRQ,
218 static struct platform_device sti_device = {
221 .num_resources = ARRAY_SIZE(sti_resources),
222 .resource = sti_resources,
225 static inline void omap_init_sti(void)
227 platform_device_register(&sti_device);
230 static inline void omap_init_sti(void) {}
233 /*-------------------------------------------------------------------------*/
236 * This gets called after board-specific INIT_MACHINE, and initializes most
237 * on-chip peripherals accessible on this board (except for few like USB):
239 * (a) Does any "standard config" pin muxing needed. Board-specific
240 * code will have muxed GPIO pins and done "nonstandard" setup;
241 * that code could live in the boot loader.
242 * (b) Populating board-specific platform_data with the data drivers
243 * rely on to handle wiring variations.
244 * (c) Creating platform devices as meaningful on this board and
245 * with this kernel configuration.
247 * Claiming GPIOs, and setting their direction and initial values, is the
248 * responsibility of the device drivers. So is responding to probe().
250 * Board-specific knowlege like creating devices or pin setup is to be
251 * kept out of drivers as much as possible. In particular, pin setup
252 * may be handled by the boot loader, and drivers should expect it will
253 * normally have been done by the time they're probed.
255 static int __init omap1_init_devices(void)
257 /* please keep these calls, and their implementations above,
258 * in alphabetical order so they're easier to sort through.
268 arch_initcall(omap1_init_devices);