arch/arm/mach-omap2/board-am3517evm.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-am3517evm.c
   3  *
   4  * Copyright (C) 2009 Texas Instruments Incorporated
   5  * Author: Ranjith Lohithakshan <ranjithl@ti.com>
   6  *
   7  * Based on mach-omap2/board-omap3evm.c
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as  published by the
  11  * Free Software Foundation version 2.
  12  *
  13  * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
  14  * whether express or implied; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  */
  18
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/gpio.h>
  23 #include <linux/i2c/pca953x.h>
  24
  25 #include <mach/hardware.h>
  26 #include <mach/am35xx.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30
  31 #include <plat/board.h>
  32 #include <plat/common.h>
  33 #include <plat/usb.h>
  34 #include <plat/display.h>
  35
  36 #include "mux.h"
  37
  38 #define LCD_PANEL_PWR           176
  39 #define LCD_PANEL_BKLIGHT_PWR   182
  40 #define LCD_PANEL_PWM           181
  41
  42 static struct i2c_board_info __initdata am3517evm_i2c_boardinfo[] = {
  43         {
  44                 I2C_BOARD_INFO("s35390a", 0x30),
  45                 .type           = "s35390a",
  46         },
  47 };
  48
  49 /*
  50  * RTC - S35390A
  51  */
  52 #define GPIO_RTCS35390A_IRQ     55
  53
  54 static void __init am3517_evm_rtc_init(void)
  55 {
  56         int r;
  57
  58         omap_mux_init_gpio(GPIO_RTCS35390A_IRQ, OMAP_PIN_INPUT_PULLUP);
  59         r = gpio_request(GPIO_RTCS35390A_IRQ, "rtcs35390a-irq");
  60         if (r < 0) {
  61                 printk(KERN_WARNING "failed to request GPIO#%d\n",
  62                                 GPIO_RTCS35390A_IRQ);
  63                 return;
  64         }
  65         r = gpio_direction_input(GPIO_RTCS35390A_IRQ);
  66         if (r < 0) {
  67                 printk(KERN_WARNING "GPIO#%d cannot be configured as input\n",
  68                                 GPIO_RTCS35390A_IRQ);
  69                 gpio_free(GPIO_RTCS35390A_IRQ);
  70                 return;
  71         }
  72         am3517evm_i2c_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
  73 }
  74
  75 /*
  76  * I2C GPIO Expander - TCA6416
  77  */
  78
  79 /* Mounted on Base-Board */
  80 static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = {
  81         .gpio_base      = OMAP_MAX_GPIO_LINES,
  82 };
  83 static struct i2c_board_info __initdata am3517evm_tca6416_info_0[] = {
  84         {
  85                 I2C_BOARD_INFO("tca6416", 0x21),
  86                 .platform_data = &am3517evm_gpio_expander_info_0,
  87         },
  88 };
  89
  90 /* Mounted on UI Card */
  91 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = {
  92         .gpio_base      = OMAP_MAX_GPIO_LINES + 16,
  93 };
  94 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = {
  95         .gpio_base      = OMAP_MAX_GPIO_LINES + 32,
  96 };
  97 static struct i2c_board_info __initdata am3517evm_ui_tca6416_info[] = {
  98         {
  99                 I2C_BOARD_INFO("tca6416", 0x20),
 100                 .platform_data = &am3517evm_ui_gpio_expander_info_1,
 101         },
 102         {
 103                 I2C_BOARD_INFO("tca6416", 0x21),
 104                 .platform_data = &am3517evm_ui_gpio_expander_info_2,
 105         },
 106 };
 107
 108 static int __init am3517_evm_i2c_init(void)
 109 {
 110         omap_register_i2c_bus(1, 400, NULL, 0);
 111         omap_register_i2c_bus(2, 400, am3517evm_tca6416_info_0,
 112                         ARRAY_SIZE(am3517evm_tca6416_info_0));
 113         omap_register_i2c_bus(3, 400, am3517evm_ui_tca6416_info,
 114                         ARRAY_SIZE(am3517evm_ui_tca6416_info));
 115
 116         return 0;
 117 }
 118
 119 static int lcd_enabled;
 120 static int dvi_enabled;
 121
 122 static void __init am3517_evm_display_init(void)
 123 {
 124         int r;
 125
 126         omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
 127         omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
 128         omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);
 129         /*
 130          * Enable GPIO 182 = LCD Backlight Power
 131          */
 132         r = gpio_request(LCD_PANEL_BKLIGHT_PWR, "lcd_backlight_pwr");
 133         if (r) {
 134                 printk(KERN_ERR "failed to get lcd_backlight_pwr\n");
 135                 return;
 136         }
 137         gpio_direction_output(LCD_PANEL_BKLIGHT_PWR, 1);
 138         /*
 139          * Enable GPIO 181 = LCD Panel PWM
 140          */
 141         r = gpio_request(LCD_PANEL_PWM, "lcd_pwm");
 142         if (r) {
 143                 printk(KERN_ERR "failed to get lcd_pwm\n");
 144                 goto err_1;
 145         }
 146         gpio_direction_output(LCD_PANEL_PWM, 1);
 147         /*
 148          * Enable GPIO 176 = LCD Panel Power enable pin
 149          */
 150         r = gpio_request(LCD_PANEL_PWR, "lcd_panel_pwr");
 151         if (r) {
 152                 printk(KERN_ERR "failed to get lcd_panel_pwr\n");
 153                 goto err_2;
 154         }
 155         gpio_direction_output(LCD_PANEL_PWR, 1);
 156
 157         printk(KERN_INFO "Display initialized successfully\n");
 158         return;
 159
 160 err_2:
 161         gpio_free(LCD_PANEL_PWM);
 162 err_1:
 163         gpio_free(LCD_PANEL_BKLIGHT_PWR);
 164 }
 165
 166 static int am3517_evm_panel_enable_lcd(struct omap_dss_device *dssdev)
 167 {
 168         if (dvi_enabled) {
 169                 printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
 170                 return -EINVAL;
 171         }
 172         gpio_set_value(LCD_PANEL_PWR, 1);
 173         lcd_enabled = 1;
 174
 175         return 0;
 176 }
 177
 178 static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
 179 {
 180         gpio_set_value(LCD_PANEL_PWR, 0);
 181         lcd_enabled = 0;
 182 }
 183
 184 static struct omap_dss_device am3517_evm_lcd_device = {
 185         .type                   = OMAP_DISPLAY_TYPE_DPI,
 186         .name                   = "lcd",
 187         .driver_name            = "sharp_lq_panel",
 188         .phy.dpi.data_lines     = 16,
 189         .platform_enable        = am3517_evm_panel_enable_lcd,
 190         .platform_disable       = am3517_evm_panel_disable_lcd,
 191 };
 192
 193 static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
 194 {
 195         return 0;
 196 }
 197
 198 static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
 199 {
 200 }
 201
 202 static struct omap_dss_device am3517_evm_tv_device = {
 203         .type                   = OMAP_DISPLAY_TYPE_VENC,
 204         .name                   = "tv",
 205         .driver_name            = "venc",
 206         .phy.venc.type          = OMAP_DSS_VENC_TYPE_SVIDEO,
 207         .platform_enable        = am3517_evm_panel_enable_tv,
 208         .platform_disable       = am3517_evm_panel_disable_tv,
 209 };
 210
 211 static int am3517_evm_panel_enable_dvi(struct omap_dss_device *dssdev)
 212 {
 213         if (lcd_enabled) {
 214                 printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
 215                 return -EINVAL;
 216         }
 217         dvi_enabled = 1;
 218
 219         return 0;
 220 }
 221
 222 static void am3517_evm_panel_disable_dvi(struct omap_dss_device *dssdev)
 223 {
 224         dvi_enabled = 0;
 225 }
 226
 227 static struct omap_dss_device am3517_evm_dvi_device = {
 228         .type                   = OMAP_DISPLAY_TYPE_DPI,
 229         .name                   = "dvi",
 230         .driver_name            = "generic_panel",
 231         .phy.dpi.data_lines     = 24,
 232         .platform_enable        = am3517_evm_panel_enable_dvi,
 233         .platform_disable       = am3517_evm_panel_disable_dvi,
 234 };
 235
 236 static struct omap_dss_device *am3517_evm_dss_devices[] = {
 237         &am3517_evm_lcd_device,
 238         &am3517_evm_tv_device,
 239         &am3517_evm_dvi_device,
 240 };
 241
 242 static struct omap_dss_board_info am3517_evm_dss_data = {
 243         .num_devices    = ARRAY_SIZE(am3517_evm_dss_devices),
 244         .devices        = am3517_evm_dss_devices,
 245         .default_device = &am3517_evm_lcd_device,
 246 };
 247
 248 struct platform_device am3517_evm_dss_device = {
 249         .name           = "omapdss",
 250         .id             = -1,
 251         .dev            = {
 252                 .platform_data  = &am3517_evm_dss_data,
 253         },
 254 };
 255
 256 /*
 257  * Board initialization
 258  */
 259 static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
 260 };
 261
 262 static struct platform_device *am3517_evm_devices[] __initdata = {
 263         &am3517_evm_dss_device,
 264 };
 265
 266 static void __init am3517_evm_init_irq(void)
 267 {
 268         omap_board_config = am3517_evm_config;
 269         omap_board_config_size = ARRAY_SIZE(am3517_evm_config);
 270
 271         omap2_init_common_hw(NULL, NULL);
 272         omap_init_irq();
 273         omap_gpio_init();
 274 }
 275
 276 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 277         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 278         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 279         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 280
 281         .phy_reset  = true,
 282         .reset_gpio_port[0]  = 57,
 283         .reset_gpio_port[1]  = -EINVAL,
 284         .reset_gpio_port[2]  = -EINVAL
 285 };
 286
 287 #ifdef CONFIG_OMAP_MUX
 288 static struct omap_board_mux board_mux[] __initdata = {
 289         { .reg_offset = OMAP_MUX_TERMINATOR },
 290 };
 291 #else
 292 #define board_mux       NULL
 293 #endif
 294
 295 static void __init am3517_evm_init(void)
 296 {
 297         am3517_evm_i2c_init();
 298
 299         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 300         platform_add_devices(am3517_evm_devices,
 301                                 ARRAY_SIZE(am3517_evm_devices));
 302
 303         omap_serial_init();
 304
 305         /* Configure GPIO for EHCI port */
 306         omap_mux_init_gpio(57, OMAP_PIN_OUTPUT);
 307         usb_ehci_init(&ehci_pdata);
 308         /* DSS */
 309         am3517_evm_display_init();
 310
 311         /* RTC - S35390A */
 312         am3517_evm_rtc_init();
 313
 314         i2c_register_board_info(1, am3517evm_i2c_boardinfo,
 315                                 ARRAY_SIZE(am3517evm_i2c_boardinfo));
 316 }
 317
 318 static void __init am3517_evm_map_io(void)
 319 {
 320         omap2_set_globals_343x();
 321         omap34xx_map_common_io();
 322 }
 323
 324 MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
 325         .phys_io        = 0x48000000,
 326         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 327         .boot_params    = 0x80000100,
 328         .map_io         = am3517_evm_map_io,
 329         .init_irq       = am3517_evm_init_irq,
 330         .init_machine   = am3517_evm_init,
 331         .timer          = &omap_timer,
 332 MACHINE_END