arch/arm/mach-omap2/board-3430sdp.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-3430sdp.c
   3  *
   4  * Copyright (C) 2007 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/input.h>
  20 #include <linux/workqueue.h>
  21 #include <linux/err.h>
  22 #include <linux/clk.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/ads7846.h>
  25
  26 #include <asm/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30
  31 #include <asm/arch/twl4030.h>
  32 #include <asm/arch/mcspi.h>
  33 #include <asm/arch/gpio.h>
  34 #include <asm/arch/mux.h>
  35 #include <asm/arch/board.h>
  36 #include <asm/arch/common.h>
  37 #include <asm/arch/keypad.h>
  38 #include <asm/arch/dma.h>
  39 #include <asm/arch/gpmc.h>
  40
  41 #include <asm/io.h>
  42 #include <asm/delay.h>
  43
  44 #define SDP3430_SMC91X_CS       3
  45
  46 #define ENABLE_VAUX3_DEDICATED  0x03
  47 #define ENABLE_VAUX3_DEV_GRP    0x20
  48
  49
  50 static struct resource sdp3430_smc91x_resources[] = {
  51         [0] = {
  52                 .start  = OMAP34XX_ETHR_START,
  53                 .end    = OMAP34XX_ETHR_START + SZ_4K,
  54                 .flags  = IORESOURCE_MEM,
  55         },
  56         [1] = {
  57                 .start  = 0,
  58                 .end    = 0,
  59                 .flags  = IORESOURCE_IRQ,
  60         },
  61 };
  62
  63 static struct platform_device sdp3430_smc91x_device = {
  64         .name           = "smc91x",
  65         .id             = -1,
  66         .num_resources  = ARRAY_SIZE(sdp3430_smc91x_resources),
  67         .resource       = sdp3430_smc91x_resources,
  68 };
  69
  70 static int sdp3430_keymap[] = {
  71         KEY(0, 0, KEY_LEFT),
  72         KEY(0, 1, KEY_RIGHT),
  73         KEY(0, 2, KEY_A),
  74         KEY(0, 3, KEY_B),
  75         KEY(0, 4, KEY_C),
  76         KEY(1, 0, KEY_DOWN),
  77         KEY(1, 1, KEY_UP),
  78         KEY(1, 2, KEY_E),
  79         KEY(1, 3, KEY_F),
  80         KEY(1, 4, KEY_G),
  81         KEY(2, 0, KEY_ENTER),
  82         KEY(2, 1, KEY_I),
  83         KEY(2, 2, KEY_J),
  84         KEY(2, 3, KEY_K),
  85         KEY(2, 4, KEY_3),
  86         KEY(3, 0, KEY_M),
  87         KEY(3, 1, KEY_N),
  88         KEY(3, 2, KEY_O),
  89         KEY(3, 3, KEY_P),
  90         KEY(3, 4, KEY_Q),
  91         KEY(4, 0, KEY_R),
  92         KEY(4, 1, KEY_4),
  93         KEY(4, 2, KEY_T),
  94         KEY(4, 3, KEY_U),
  95         KEY(4, 4, KEY_D),
  96         KEY(5, 0, KEY_V),
  97         KEY(5, 1, KEY_W),
  98         KEY(5, 2, KEY_L),
  99         KEY(5, 3, KEY_S),
 100         KEY(5, 4, KEY_H),
 101         0
 102 };
 103
 104 static struct omap_kp_platform_data sdp3430_kp_data = {
 105         .rows           = 5,
 106         .cols           = 6,
 107         .keymap         = sdp3430_keymap,
 108         .keymapsize     = ARRAY_SIZE(sdp3430_keymap),
 109         .rep            = 1,
 110 };
 111
 112 static struct platform_device sdp3430_kp_device = {
 113         .name           = "omap_twl4030keypad",
 114         .id             = -1,
 115         .dev            = {
 116                 .platform_data  = &sdp3430_kp_data,
 117         },
 118 };
 119
 120 /**
 121  * @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
 122  *
 123  * @return - void. If request gpio fails then Flag KERN_ERR.
 124  */
 125 static void ads7846_dev_init(void)
 126 {
 127         if (omap_request_gpio(TS_GPIO) < 0) {
 128                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 129                 return;
 130         }
 131
 132         omap_set_gpio_direction(TS_GPIO, 1);
 133
 134         omap_set_gpio_debounce(TS_GPIO, 1);
 135         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 136 }
 137
 138 static int ads7846_get_pendown_state(void)
 139 {
 140         return !omap_get_gpio_datain(TS_GPIO);
 141 }
 142
 143 /*
 144  * This enable(1)/disable(0) the voltage for TS: uses twl4030 calls
 145  */
 146 static int ads7846_vaux_control(int vaux_cntrl)
 147 {
 148         int ret = 0;
 149
 150 #ifdef CONFIG_TWL4030_CORE
 151         /* check for return value of ldo_use: if success it returns 0 */
 152         if (vaux_cntrl == VAUX_ENABLE) {
 153                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 154                         ENABLE_VAUX3_DEDICATED, TWL4030_VAUX3_DEDICATED))
 155                         return -EIO;
 156                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 157                         ENABLE_VAUX3_DEV_GRP, TWL4030_VAUX3_DEV_GRP))
 158                         return -EIO;
 159         } else if (vaux_cntrl == VAUX_DISABLE) {
 160                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 161                         0x00, TWL4030_VAUX3_DEDICATED))
 162                         return -EIO;
 163                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 164                         0x00, TWL4030_VAUX3_DEV_GRP))
 165                         return -EIO;
 166         }
 167 #else
 168         ret = -EIO;
 169 #endif
 170         return ret;
 171 }
 172
 173 static struct ads7846_platform_data tsc2046_config __initdata = {
 174         .get_pendown_state      = ads7846_get_pendown_state,
 175         .keep_vref_on           = 1,
 176         .vaux_control           = ads7846_vaux_control,
 177 };
 178
 179
 180 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 181         .turbo_mode     = 0,
 182         .single_channel = 1,  /* 0: slave, 1: master */
 183 };
 184
 185 static struct spi_board_info sdp3430_spi_board_info[] __initdata = {
 186         [0] = {
 187                 /*
 188                  * TSC2046 operates at a max freqency of 2MHz, so
 189                  * operate slightly below at 1.5MHz
 190                  */
 191                 .modalias               = "ads7846",
 192                 .bus_num                = 1,
 193                 .chip_select            = 0,
 194                 .max_speed_hz           = 1500000,
 195                 .controller_data        = &tsc2046_mcspi_config,
 196                 .irq                    = OMAP_GPIO_IRQ(TS_GPIO),
 197                 .platform_data          = &tsc2046_config,
 198         },
 199 };
 200
 201 static struct platform_device sdp3430_lcd_device = {
 202         .name           = "sdp2430_lcd",
 203         .id             = -1,
 204 };
 205
 206 static struct platform_device *sdp3430_devices[] __initdata = {
 207         &sdp3430_smc91x_device,
 208         &sdp3430_kp_device,
 209         &sdp3430_lcd_device,
 210 };
 211
 212 static inline void __init sdp3430_init_smc91x(void)
 213 {
 214         int eth_cs;
 215         unsigned long cs_mem_base;
 216         int eth_gpio = 0;
 217
 218         eth_cs = SDP3430_SMC91X_CS;
 219
 220         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 221                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 222                 return;
 223         }
 224
 225         sdp3430_smc91x_resources[0].start = cs_mem_base + 0x0;
 226         sdp3430_smc91x_resources[0].end   = cs_mem_base + 0xf;
 227         udelay(100);
 228
 229         if (is_sil_rev_greater_than(OMAP3430_REV_ES1_0))
 230                 eth_gpio = OMAP34XX_ETHR_GPIO_IRQ_SDPV2;
 231         else
 232                 eth_gpio = OMAP34XX_ETHR_GPIO_IRQ_SDPV1;
 233
 234         sdp3430_smc91x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
 235
 236         if (omap_request_gpio(eth_gpio) < 0) {
 237                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 238                         eth_gpio);
 239                 return;
 240         }
 241         omap_set_gpio_direction(eth_gpio, 1);
 242 }
 243
 244 static void __init omap_3430sdp_init_irq(void)
 245 {
 246         omap2_init_common_hw();
 247         omap_init_irq();
 248         omap_gpio_init();
 249         sdp3430_init_smc91x();
 250 }
 251
 252 static struct omap_uart_config sdp3430_uart_config __initdata = {
 253         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 254 };
 255
 256 static struct omap_lcd_config sdp3430_lcd_config __initdata = {
 257         .ctrl_name      = "internal",
 258 };
 259
 260 static struct omap_board_config_kernel sdp3430_config[] __initdata = {
 261         { OMAP_TAG_UART,        &sdp3430_uart_config },
 262         {OMAP_TAG_LCD,          &sdp3430_lcd_config},
 263 };
 264
 265 static int __init omap3430_i2c_init(void)
 266 {
 267         omap_register_i2c_bus(1, 2600, NULL, 0);
 268         omap_register_i2c_bus(2, 400, NULL, 0);
 269         omap_register_i2c_bus(3, 400, NULL, 0);
 270         return 0;
 271 }
 272
 273 extern void __init sdp3430_flash_init(void);
 274
 275 static void __init omap_3430sdp_init(void)
 276 {
 277         platform_add_devices(sdp3430_devices, ARRAY_SIZE(sdp3430_devices));
 278         omap_board_config = sdp3430_config;
 279         omap_board_config_size = ARRAY_SIZE(sdp3430_config);
 280         spi_register_board_info(sdp3430_spi_board_info,
 281                                 ARRAY_SIZE(sdp3430_spi_board_info));
 282         ads7846_dev_init();
 283         sdp3430_flash_init();
 284         omap_serial_init();
 285         sdp3430_usb_init();
 286 }
 287
 288 static void __init omap_3430sdp_map_io(void)
 289 {
 290         omap2_set_globals_343x();
 291         omap2_map_common_io();
 292 }
 293 arch_initcall(omap3430_i2c_init);
 294
 295 MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board")
 296         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 297         .phys_io        = 0x48000000,
 298         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 299         .boot_params    = 0x80000100,
 300         .map_io         = omap_3430sdp_map_io,
 301         .init_irq       = omap_3430sdp_init_irq,
 302         .init_machine   = omap_3430sdp_init,
 303         .timer          = &omap_timer,
 304 MACHINE_END