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 "control.h"
  39 #include "common-board-devices.h"
  40
  41 #include <plat/mux.h>
  42 #include <plat/board.h>
  43 #include <plat/common.h>
  44 #include <plat/gpmc-smsc911x.h>
  45 #include <plat/gpmc.h>
  46 #include <plat/sdrc.h>
  47
  48 #define OMAP3LOGIC_SMSC911X_CS                  1
  49
  50 #define OMAP3530_LV_SOM_MMC_GPIO_CD             110
  51 #define OMAP3530_LV_SOM_MMC_GPIO_WP             126
  52 #define OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ       152
  53
  54 #define OMAP3_TORPEDO_MMC_GPIO_CD               127
  55 #define OMAP3_TORPEDO_SMSC911X_GPIO_IRQ         129
  56
  57 static struct regulator_consumer_supply omap3logic_vmmc1_supply[] = {
  58         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
  59 };
  60
  61 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
  62 static struct regulator_init_data omap3logic_vmmc1 = {
  63         .constraints = {
  64                 .name                   = "VMMC1",
  65                 .min_uV                 = 1850000,
  66                 .max_uV                 = 3150000,
  67                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
  68                                         | REGULATOR_MODE_STANDBY,
  69                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
  70                                         | REGULATOR_CHANGE_MODE
  71                                         | REGULATOR_CHANGE_STATUS,
  72         },
  73         .num_consumer_supplies  = ARRAY_SIZE(omap3logic_vmmc1_supply),
  74         .consumer_supplies      = omap3logic_vmmc1_supply,
  75 };
  76
  77 static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
  78         .gpio_base      = OMAP_MAX_GPIO_LINES,
  79         .irq_base       = TWL4030_GPIO_IRQ_BASE,
  80         .irq_end        = TWL4030_GPIO_IRQ_END,
  81         .use_leds       = true,
  82         .pullups        = BIT(1),
  83         .pulldowns      = BIT(2)  | BIT(6)  | BIT(7)  | BIT(8)
  84                         | BIT(13) | BIT(15) | BIT(16) | BIT(17),
  85 };
  86
  87 static struct twl4030_platform_data omap3logic_twldata = {
  88         .irq_base       = TWL4030_IRQ_BASE,
  89         .irq_end        = TWL4030_IRQ_END,
  90
  91         /* platform_data for children goes here */
  92         .gpio           = &omap3logic_gpio_data,
  93         .vmmc1          = &omap3logic_vmmc1,
  94 };
  95
  96 static int __init omap3logic_i2c_init(void)
  97 {
  98         omap3_pmic_init("twl4030", &omap3logic_twldata);
  99         return 0;
 100 }
 101
 102 static struct omap2_hsmmc_info __initdata board_mmc_info[] = {
 103         {
 104                 .name           = "external",
 105                 .mmc            = 1,
 106                 .caps           = MMC_CAP_4_BIT_DATA,
 107                 .gpio_cd        = -EINVAL,
 108                 .gpio_wp        = -EINVAL,
 109         },
 110         {}      /* Terminator */
 111 };
 112
 113 static void __init board_mmc_init(void)
 114 {
 115         if (machine_is_omap3530_lv_som()) {
 116                 /* OMAP3530 LV SOM board */
 117                 board_mmc_info[0].gpio_cd = OMAP3530_LV_SOM_MMC_GPIO_CD;
 118                 board_mmc_info[0].gpio_wp = OMAP3530_LV_SOM_MMC_GPIO_WP;
 119                 omap_mux_init_signal("gpio_110", OMAP_PIN_OUTPUT);
 120                 omap_mux_init_signal("gpio_126", OMAP_PIN_OUTPUT);
 121         } else if (machine_is_omap3_torpedo()) {
 122                 /* OMAP3 Torpedo board */
 123                 board_mmc_info[0].gpio_cd = OMAP3_TORPEDO_MMC_GPIO_CD;
 124                 omap_mux_init_signal("gpio_127", OMAP_PIN_OUTPUT);
 125         } else {
 126                 /* unsupported board */
 127                 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
 128                 return;
 129         }
 130
 131         omap2_hsmmc_init(board_mmc_info);
 132 }
 133
 134 static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
 135         .cs             = OMAP3LOGIC_SMSC911X_CS,
 136         .gpio_irq       = -EINVAL,
 137         .gpio_reset     = -EINVAL,
 138 };
 139
 140 /* TODO/FIXME (comment by Peter Barada, LogicPD):
 141  * Fix the PBIAS voltage for Torpedo MMC1 pins that
 142  * are used for other needs (IRQs, etc).            */
 143 static void omap3torpedo_fix_pbias_voltage(void)
 144 {
 145         u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
 146         u32 reg;
 147
 148         if (machine_is_omap3_torpedo())
 149         {
 150                 /* Set the bias for the pin */
 151                 reg = omap_ctrl_readl(control_pbias_offset);
 152
 153                 reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
 154                 omap_ctrl_writel(reg, control_pbias_offset);
 155
 156                 /* 100ms delay required for PBIAS configuration */
 157                 msleep(100);
 158
 159                 reg |= OMAP343X_PBIASLITEVMODE1;
 160                 reg |= OMAP343X_PBIASLITEPWRDNZ1;
 161                 omap_ctrl_writel(reg | 0x300, control_pbias_offset);
 162         }
 163 }
 164
 165 static inline void __init board_smsc911x_init(void)
 166 {
 167         if (machine_is_omap3530_lv_som()) {
 168                 /* OMAP3530 LV SOM board */
 169                 board_smsc911x_data.gpio_irq =
 170                                         OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
 171                 omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
 172         } else if (machine_is_omap3_torpedo()) {
 173                 /* OMAP3 Torpedo board */
 174                 board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
 175                 omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
 176         } else {
 177                 /* unsupported board */
 178                 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
 179                 return;
 180         }
 181
 182         gpmc_smsc911x_init(&board_smsc911x_data);
 183 }
 184
 185 static void __init omap3logic_init_early(void)
 186 {
 187         omap2_init_common_infrastructure();
 188         omap2_init_common_devices(NULL, NULL);
 189 }
 190
 191 #ifdef CONFIG_OMAP_MUX
 192 static struct omap_board_mux board_mux[] __initdata = {
 193         { .reg_offset = OMAP_MUX_TERMINATOR },
 194 };
 195 #endif
 196
 197 static void __init omap3logic_init(void)
 198 {
 199         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 200         omap3torpedo_fix_pbias_voltage();
 201         omap3logic_i2c_init();
 202         omap_serial_init();
 203         board_mmc_init();
 204         board_smsc911x_init();
 205
 206         /* Ensure SDRC pins are mux'd for self-refresh */
 207         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 208         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 209 }
 210
 211 MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
 212         .boot_params    = 0x80000100,
 213         .map_io         = omap3_map_io,
 214         .init_early     = omap3logic_init_early,
 215         .init_irq       = omap3_init_irq,
 216         .init_machine   = omap3logic_init,
 217         .timer          = &omap3_timer,
 218 MACHINE_END
 219
 220 MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
 221         .boot_params    = 0x80000100,
 222         .map_io         = omap3_map_io,
 223         .init_early     = omap3logic_init_early,
 224         .init_irq       = omap3_init_irq,
 225         .init_machine   = omap3logic_init,
 226         .timer          = &omap3_timer,
 227 MACHINE_END