2 * linux/arch/arm/mach-omap2/board-ldp.c
4 * Copyright (C) 2008 Texas Instruments Inc.
5 * Nishant Kamat <nskamat@ti.com>
7 * Modified from mach-omap2/board-3430sdp.c
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
17 #include <linux/delay.h>
18 #include <linux/input.h>
19 #include <linux/workqueue.h>
20 #include <linux/err.h>
21 #include <linux/clk.h>
22 #include <linux/spi/spi.h>
23 #include <linux/spi/ads7846.h>
24 #include <linux/i2c/twl4030.h>
25 #include <linux/i2c/twl4030-rtc.h>
27 #include <asm/hardware.h>
28 #include <asm/mach-types.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
32 #include <asm/arch/mcspi.h>
33 #include <asm/arch/gpio.h>
34 #include <asm/arch/board.h>
35 #include <asm/arch/common.h>
36 #include <asm/arch/gpmc.h>
37 #include <asm/arch/hsmmc.h>
38 #include <asm/arch/usb-musb.h>
41 #include <asm/delay.h>
42 #include <asm/arch/control.h>
44 #define ENABLE_VAUX1_DEDICATED 0x03
45 #define ENABLE_VAUX1_DEV_GRP 0x20
47 #define TWL4030_MSECURE_GPIO 22
51 #ifdef CONFIG_RTC_DRV_TWL4030
52 static int twl4030_rtc_init(void)
56 /* 3430ES2.0 doesn't have msecure/gpio-22 line connected to T2 */
57 if (is_device_type_gp() && is_sil_rev_less_than(OMAP3430_REV_ES2_0)) {
58 u32 msecure_pad_config_reg = omap_ctrl_base_get() + 0xA3C;
62 ret = omap_request_gpio(TWL4030_MSECURE_GPIO);
64 printk(KERN_ERR "twl4030_rtc_init: can't"
65 "reserve GPIO:%d !\n", TWL4030_MSECURE_GPIO);
69 * TWL4030 will be in secure mode if msecure line from OMAP
70 * is low. Make msecure line high in order to change the
71 * TWL4030 RTC time and calender registers.
73 omap_set_gpio_direction(TWL4030_MSECURE_GPIO, 0);
75 tmp = omap_readw(msecure_pad_config_reg);
76 tmp &= 0xF8; /* To enable mux mode 03/04 = GPIO_RTC */
77 tmp |= mux_mask;/* To enable mux mode 03/04 = GPIO_RTC */
78 omap_writew(tmp, msecure_pad_config_reg);
80 omap_set_gpio_dataout(TWL4030_MSECURE_GPIO, 1);
86 static void twl4030_rtc_exit(void)
88 omap_free_gpio(TWL4030_MSECURE_GPIO);
91 static struct twl4030rtc_platform_data ldp_twl4030rtc_data = {
92 .init = &twl4030_rtc_init,
93 .exit = &twl4030_rtc_exit,
96 static struct platform_device ldp_twl4030rtc_device = {
97 .name = "twl4030_rtc",
100 .platform_data = &ldp_twl4030rtc_data,
106 * @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
108 * @return - void. If request gpio fails then Flag KERN_ERR.
110 static void ads7846_dev_init(void)
112 if (omap_request_gpio(ts_gpio) < 0) {
113 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
117 omap_set_gpio_direction(ts_gpio, 1);
119 omap_set_gpio_debounce(ts_gpio, 1);
120 omap_set_gpio_debounce_time(ts_gpio, 0xa);
123 static int ads7846_get_pendown_state(void)
125 return !omap_get_gpio_datain(ts_gpio);
129 * This enable(1)/disable(0) the voltage for TS: uses twl4030 calls
131 static int ads7846_vaux_control(int vaux_cntrl)
135 #ifdef CONFIG_TWL4030_CORE
136 /* check for return value of ldo_use: if success it returns 0 */
137 if (vaux_cntrl == VAUX_ENABLE) {
138 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
139 ENABLE_VAUX1_DEDICATED, TWL4030_VAUX1_DEDICATED))
141 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
142 ENABLE_VAUX1_DEV_GRP, TWL4030_VAUX1_DEV_GRP))
144 } else if (vaux_cntrl == VAUX_DISABLE) {
145 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
146 0x00, TWL4030_VAUX1_DEDICATED))
148 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
149 0x00, TWL4030_VAUX1_DEV_GRP))
158 static struct ads7846_platform_data tsc2046_config __initdata = {
159 .get_pendown_state = ads7846_get_pendown_state,
161 .vaux_control = ads7846_vaux_control,
165 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
167 .single_channel = 1, /* 0: slave, 1: master */
170 static struct spi_board_info ldp_spi_board_info[] __initdata = {
173 * TSC2046 operates at a max freqency of 2MHz, so
174 * operate slightly below at 1.5MHz
176 .modalias = "ads7846",
179 .max_speed_hz = 1500000,
180 .controller_data = &tsc2046_mcspi_config,
182 .platform_data = &tsc2046_config,
186 static struct platform_device *ldp_devices[] __initdata = {
187 #ifdef CONFIG_RTC_DRV_TWL4030
188 &ldp_twl4030rtc_device,
192 static void __init omap_ldp_init_irq(void)
194 omap2_init_common_hw();
199 static struct omap_uart_config ldp_uart_config __initdata = {
200 .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
203 static struct omap_mmc_config ldp_mmc_config __initdata = {
210 static struct omap_board_config_kernel ldp_config[] __initdata = {
211 { OMAP_TAG_UART, &ldp_uart_config },
212 { OMAP_TAG_MMC, &ldp_mmc_config },
215 static int __init omap_i2c_init(void)
217 omap_register_i2c_bus(1, 2600, NULL, 0);
218 omap_register_i2c_bus(2, 400, NULL, 0);
219 omap_register_i2c_bus(3, 400, NULL, 0);
223 static void __init omap_ldp_init(void)
225 platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
226 omap_board_config = ldp_config;
227 omap_board_config_size = ARRAY_SIZE(ldp_config);
229 ldp_spi_board_info[0].irq = OMAP_GPIO_IRQ(ts_gpio);
230 spi_register_board_info(ldp_spi_board_info,
231 ARRAY_SIZE(ldp_spi_board_info));
238 static void __init omap_ldp_map_io(void)
240 omap2_set_globals_343x();
241 omap2_map_common_io();
243 arch_initcall(omap_i2c_init);
245 MACHINE_START(OMAP_LDP, "OMAP LDP board")
246 .phys_io = 0x48000000,
247 .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
248 .boot_params = 0x80000100,
249 .map_io = omap_ldp_map_io,
250 .init_irq = omap_ldp_init_irq,
251 .init_machine = omap_ldp_init,
252 .timer = &omap_timer,