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 | IORESOURCE_IRQ_LOWLEVEL,
  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 static int ts_gpio;
 121
 122 /**
 123  * @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
 124  *
 125  * @return - void. If request gpio fails then Flag KERN_ERR.
 126  */
 127 static void ads7846_dev_init(void)
 128 {
 129         if (omap_request_gpio(ts_gpio) < 0) {
 130                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 131                 return;
 132         }
 133
 134         omap_set_gpio_direction(ts_gpio, 1);
 135
 136         omap_set_gpio_debounce(ts_gpio, 1);
 137         omap_set_gpio_debounce_time(ts_gpio, 0xa);
 138 }
 139
 140 static int ads7846_get_pendown_state(void)
 141 {
 142         return !omap_get_gpio_datain(ts_gpio);
 143 }
 144
 145 /*
 146  * This enable(1)/disable(0) the voltage for TS: uses twl4030 calls
 147  */
 148 static int ads7846_vaux_control(int vaux_cntrl)
 149 {
 150         int ret = 0;
 151
 152 #ifdef CONFIG_TWL4030_CORE
 153         /* check for return value of ldo_use: if success it returns 0 */
 154         if (vaux_cntrl == VAUX_ENABLE) {
 155                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 156                         ENABLE_VAUX3_DEDICATED, TWL4030_VAUX3_DEDICATED))
 157                         return -EIO;
 158                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 159                         ENABLE_VAUX3_DEV_GRP, TWL4030_VAUX3_DEV_GRP))
 160                         return -EIO;
 161         } else if (vaux_cntrl == VAUX_DISABLE) {
 162                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 163                         0x00, TWL4030_VAUX3_DEDICATED))
 164                         return -EIO;
 165                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 166                         0x00, TWL4030_VAUX3_DEV_GRP))
 167                         return -EIO;
 168         }
 169 #else
 170         ret = -EIO;
 171 #endif
 172         return ret;
 173 }
 174
 175 static struct ads7846_platform_data tsc2046_config __initdata = {
 176         .get_pendown_state      = ads7846_get_pendown_state,
 177         .keep_vref_on           = 1,
 178         .vaux_control           = ads7846_vaux_control,
 179 };
 180
 181
 182 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 183         .turbo_mode     = 0,
 184         .single_channel = 1,  /* 0: slave, 1: master */
 185 };
 186
 187 static struct spi_board_info sdp3430_spi_board_info[] __initdata = {
 188         [0] = {
 189                 /*
 190                  * TSC2046 operates at a max freqency of 2MHz, so
 191                  * operate slightly below at 1.5MHz
 192                  */
 193                 .modalias               = "ads7846",
 194                 .bus_num                = 1,
 195                 .chip_select            = 0,
 196                 .max_speed_hz           = 1500000,
 197                 .controller_data        = &tsc2046_mcspi_config,
 198                 .irq                    = 0,
 199                 .platform_data          = &tsc2046_config,
 200         },
 201 };
 202
 203 static struct platform_device sdp3430_lcd_device = {
 204         .name           = "sdp2430_lcd",
 205         .id             = -1,
 206 };
 207
 208 static struct platform_device *sdp3430_devices[] __initdata = {
 209         &sdp3430_smc91x_device,
 210         &sdp3430_kp_device,
 211         &sdp3430_lcd_device,
 212 };
 213
 214 static inline void __init sdp3430_init_smc91x(void)
 215 {
 216         int eth_cs;
 217         unsigned long cs_mem_base;
 218         int eth_gpio = 0;
 219
 220         eth_cs = SDP3430_SMC91X_CS;
 221
 222         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 223                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 224                 return;
 225         }
 226
 227         sdp3430_smc91x_resources[0].start = cs_mem_base + 0x0;
 228         sdp3430_smc91x_resources[0].end   = cs_mem_base + 0xf;
 229         udelay(100);
 230
 231         if (is_sil_rev_greater_than(OMAP3430_REV_ES1_0))
 232                 eth_gpio = OMAP34XX_ETHR_GPIO_IRQ_SDPV2;
 233         else
 234                 eth_gpio = OMAP34XX_ETHR_GPIO_IRQ_SDPV1;
 235
 236         sdp3430_smc91x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
 237
 238         if (omap_request_gpio(eth_gpio) < 0) {
 239                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 240                         eth_gpio);
 241                 return;
 242         }
 243         omap_set_gpio_direction(eth_gpio, 1);
 244 }
 245
 246 static void __init omap_3430sdp_init_irq(void)
 247 {
 248         omap2_init_common_hw();
 249         omap_init_irq();
 250         omap_gpio_init();
 251         sdp3430_init_smc91x();
 252 }
 253
 254 static struct omap_uart_config sdp3430_uart_config __initdata = {
 255         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 256 };
 257
 258 static struct omap_lcd_config sdp3430_lcd_config __initdata = {
 259         .ctrl_name      = "internal",
 260 };
 261
 262 static struct omap_mmc_config sdp3430_mmc_config __initdata = {
 263         .mmc [0] = {
 264                 .enabled        = 1,
 265                 .wire4          = 1,
 266         },
 267 };
 268
 269 static struct omap_board_config_kernel sdp3430_config[] __initdata = {
 270         { OMAP_TAG_UART,        &sdp3430_uart_config },
 271         {OMAP_TAG_LCD,          &sdp3430_lcd_config},
 272         {OMAP_TAG_MMC,          &sdp3430_mmc_config },
 273 };
 274
 275 static int __init omap3430_i2c_init(void)
 276 {
 277         omap_register_i2c_bus(1, 2600, NULL, 0);
 278         omap_register_i2c_bus(2, 400, NULL, 0);
 279         omap_register_i2c_bus(3, 400, NULL, 0);
 280         return 0;
 281 }
 282
 283 extern void __init sdp3430_flash_init(void);
 284
 285 static void __init omap_3430sdp_init(void)
 286 {
 287         platform_add_devices(sdp3430_devices, ARRAY_SIZE(sdp3430_devices));
 288         omap_board_config = sdp3430_config;
 289         omap_board_config_size = ARRAY_SIZE(sdp3430_config);
 290         if (is_sil_rev_greater_than(OMAP3430_REV_ES1_0))
 291                 ts_gpio = OMAP34XX_TS_GPIO_IRQ_SDPV2;
 292         else
 293                 ts_gpio = OMAP34XX_TS_GPIO_IRQ_SDPV1;
 294         sdp3430_spi_board_info[0].irq = OMAP_GPIO_IRQ(ts_gpio);
 295         spi_register_board_info(sdp3430_spi_board_info,
 296                                 ARRAY_SIZE(sdp3430_spi_board_info));
 297         ads7846_dev_init();
 298         sdp3430_flash_init();
 299         omap_serial_init();
 300         sdp3430_usb_init();
 301         sdp_mmc_init();
 302 }
 303
 304 static void __init omap_3430sdp_map_io(void)
 305 {
 306         omap2_set_globals_343x();
 307         omap2_map_common_io();
 308 }
 309 arch_initcall(omap3430_i2c_init);
 310
 311 MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board")
 312         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 313         .phys_io        = 0x48000000,
 314         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 315         .boot_params    = 0x80000100,
 316         .map_io         = omap_3430sdp_map_io,
 317         .init_irq       = omap_3430sdp_init_irq,
 318         .init_machine   = omap_3430sdp_init,
 319         .timer          = &omap_timer,
 320 MACHINE_END