arch/arm/mach-omap2/board-omap3logic.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3logic.c
   3  *
   4  * Copyright (C) 2010 Li-Pro.Net
   5  * Stephan Linz <linz@li-pro.net>
   6  *
   7  * Copyright (C) 2010 Logic Product Development, Inc.
   8  * Peter Barada <peter.barada@logicpd.com>
   9  *
  10  * Modified from Beagle, EVM, and RX51
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/init.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/delay.h>
  21 #include <linux/err.h>
  22 #include <linux/clk.h>
  23 #include <linux/io.h>
  24 #include <linux/gpio.h>
  25
  26 #include <linux/regulator/machine.h>
  27
  28 #include <linux/i2c/twl.h>
  29 #include <linux/mmc/host.h>
  30
  31 #include <mach/hardware.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35
  36 #include "mux.h"
  37 #include "hsmmc.h"
  38 #include "timer-gp.h"
  39 #include "control.h"
  40 #include "common-board-devices.h"
  41
  42 #include <plat/mux.h>
  43 #include <plat/board.h>
  44 #include <plat/common.h>
  45 #include <plat/gpmc-smsc911x.h>
  46 #include <plat/gpmc.h>
  47 #include <plat/sdrc.h>
  48
  49 #define OMAP3LOGIC_SMSC911X_CS                  1
  50
  51 #define OMAP3530_LV_SOM_MMC_GPIO_CD             110
  52 #define OMAP3530_LV_SOM_MMC_GPIO_WP             126
  53 #define OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ       152
  54
  55 #define OMAP3_TORPEDO_MMC_GPIO_CD               127
  56 #define OMAP3_TORPEDO_SMSC911X_GPIO_IRQ         129
  57
  58 static struct regulator_consumer_supply omap3logic_vmmc1_supply = {
  59         .supply                 = "vmmc",
  60 };
  61
  62 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
  63 static struct regulator_init_data omap3logic_vmmc1 = {
  64         .constraints = {
  65                 .name                   = "VMMC1",
  66                 .min_uV                 = 1850000,
  67                 .max_uV                 = 3150000,
  68                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
  69                                         | REGULATOR_MODE_STANDBY,
  70                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
  71                                         | REGULATOR_CHANGE_MODE
  72                                         | REGULATOR_CHANGE_STATUS,
  73         },
  74         .num_consumer_supplies  = 1,
  75         .consumer_supplies      = &omap3logic_vmmc1_supply,
  76 };
  77
  78 static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
  79         .gpio_base      = OMAP_MAX_GPIO_LINES,
  80         .irq_base       = TWL4030_GPIO_IRQ_BASE,
  81         .irq_end        = TWL4030_GPIO_IRQ_END,
  82         .use_leds       = true,
  83         .pullups        = BIT(1),
  84         .pulldowns      = BIT(2)  | BIT(6)  | BIT(7)  | BIT(8)
  85                         | BIT(13) | BIT(15) | BIT(16) | BIT(17),
  86 };
  87
  88 static struct twl4030_platform_data omap3logic_twldata = {
  89         .irq_base       = TWL4030_IRQ_BASE,
  90         .irq_end        = TWL4030_IRQ_END,
  91
  92         /* platform_data for children goes here */
  93         .gpio           = &omap3logic_gpio_data,
  94         .vmmc1          = &omap3logic_vmmc1,
  95 };
  96
  97 static int __init omap3logic_i2c_init(void)
  98 {
  99         omap3_pmic_init("twl4030", &omap3logic_twldata);
 100         return 0;
 101 }
 102
 103 static struct omap2_hsmmc_info __initdata board_mmc_info[] = {
 104         {
 105                 .name           = "external",
 106                 .mmc            = 1,
 107                 .caps           = MMC_CAP_4_BIT_DATA,
 108                 .gpio_cd        = -EINVAL,
 109                 .gpio_wp        = -EINVAL,
 110         },
 111         {}      /* Terminator */
 112 };
 113
 114 static void __init board_mmc_init(void)
 115 {
 116         if (machine_is_omap3530_lv_som()) {
 117                 /* OMAP3530 LV SOM board */
 118                 board_mmc_info[0].gpio_cd = OMAP3530_LV_SOM_MMC_GPIO_CD;
 119                 board_mmc_info[0].gpio_wp = OMAP3530_LV_SOM_MMC_GPIO_WP;
 120                 omap_mux_init_signal("gpio_110", OMAP_PIN_OUTPUT);
 121                 omap_mux_init_signal("gpio_126", OMAP_PIN_OUTPUT);
 122         } else if (machine_is_omap3_torpedo()) {
 123                 /* OMAP3 Torpedo board */
 124                 board_mmc_info[0].gpio_cd = OMAP3_TORPEDO_MMC_GPIO_CD;
 125                 omap_mux_init_signal("gpio_127", OMAP_PIN_OUTPUT);
 126         } else {
 127                 /* unsupported board */
 128                 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
 129                 return;
 130         }
 131
 132         omap2_hsmmc_init(board_mmc_info);
 133         /* link regulators to MMC adapters */
 134         omap3logic_vmmc1_supply.dev = board_mmc_info[0].dev;
 135 }
 136
 137 static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
 138         .cs             = OMAP3LOGIC_SMSC911X_CS,
 139         .gpio_irq       = -EINVAL,
 140         .gpio_reset     = -EINVAL,
 141 };
 142
 143 /* TODO/FIXME (comment by Peter Barada, LogicPD):
 144  * Fix the PBIAS voltage for Torpedo MMC1 pins that
 145  * are used for other needs (IRQs, etc).            */
 146 static void omap3torpedo_fix_pbias_voltage(void)
 147 {
 148         u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
 149         u32 reg;
 150
 151         if (machine_is_omap3_torpedo())
 152         {
 153                 /* Set the bias for the pin */
 154                 reg = omap_ctrl_readl(control_pbias_offset);
 155
 156                 reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
 157                 omap_ctrl_writel(reg, control_pbias_offset);
 158
 159                 /* 100ms delay required for PBIAS configuration */
 160                 msleep(100);
 161
 162                 reg |= OMAP343X_PBIASLITEVMODE1;
 163                 reg |= OMAP343X_PBIASLITEPWRDNZ1;
 164                 omap_ctrl_writel(reg | 0x300, control_pbias_offset);
 165         }
 166 }
 167
 168 static inline void __init board_smsc911x_init(void)
 169 {
 170         if (machine_is_omap3530_lv_som()) {
 171                 /* OMAP3530 LV SOM board */
 172                 board_smsc911x_data.gpio_irq =
 173                                         OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
 174                 omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
 175         } else if (machine_is_omap3_torpedo()) {
 176                 /* OMAP3 Torpedo board */
 177                 board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
 178                 omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
 179         } else {
 180                 /* unsupported board */
 181                 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
 182                 return;
 183         }
 184
 185         gpmc_smsc911x_init(&board_smsc911x_data);
 186 }
 187
 188 static void __init omap3logic_init_early(void)
 189 {
 190         omap2_init_common_infrastructure();
 191         omap2_init_common_devices(NULL, NULL);
 192 }
 193
 194 #ifdef CONFIG_OMAP_MUX
 195 static struct omap_board_mux board_mux[] __initdata = {
 196         { .reg_offset = OMAP_MUX_TERMINATOR },
 197 };
 198 #endif
 199
 200 static void __init omap3logic_init(void)
 201 {
 202         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 203         omap3torpedo_fix_pbias_voltage();
 204         omap3logic_i2c_init();
 205         omap_serial_init();
 206         board_mmc_init();
 207         board_smsc911x_init();
 208
 209         /* Ensure SDRC pins are mux'd for self-refresh */
 210         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 211         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 212 }
 213
 214 MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
 215         .boot_params    = 0x80000100,
 216         .map_io         = omap3_map_io,
 217         .init_early     = omap3logic_init_early,
 218         .init_irq       = omap_init_irq,
 219         .init_machine   = omap3logic_init,
 220         .timer          = &omap_timer,
 221 MACHINE_END
 222
 223 MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
 224         .boot_params    = 0x80000100,
 225         .map_io         = omap3_map_io,
 226         .init_early     = omap3logic_init_early,
 227         .init_irq       = omap_init_irq,
 228         .init_machine   = omap3logic_init,
 229         .timer          = &omap_timer,
 230 MACHINE_END