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/fixed.h>
  27 #include <linux/regulator/machine.h>
  28
  29 #include <linux/i2c/twl.h>
  30 #include <linux/mmc/host.h>
  31
  32 #include <mach/hardware.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/map.h>
  36
  37 #include "mux.h"
  38 #include "hsmmc.h"
  39 #include "control.h"
  40 #include "common-board-devices.h"
  41
  42 #include <plat/mux.h>
  43 #include <plat/board.h>
  44 #include "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         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
  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  = ARRAY_SIZE(omap3logic_vmmc1_supply),
  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         omap_hsmmc_init(board_mmc_info);
 133 }
 134
 135 static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
 136         .cs             = OMAP3LOGIC_SMSC911X_CS,
 137         .gpio_irq       = -EINVAL,
 138         .gpio_reset     = -EINVAL,
 139 };
 140
 141 /* TODO/FIXME (comment by Peter Barada, LogicPD):
 142  * Fix the PBIAS voltage for Torpedo MMC1 pins that
 143  * are used for other needs (IRQs, etc).            */
 144 static void omap3torpedo_fix_pbias_voltage(void)
 145 {
 146         u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
 147         u32 reg;
 148
 149         if (machine_is_omap3_torpedo())
 150         {
 151                 /* Set the bias for the pin */
 152                 reg = omap_ctrl_readl(control_pbias_offset);
 153
 154                 reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
 155                 omap_ctrl_writel(reg, control_pbias_offset);
 156
 157                 /* 100ms delay required for PBIAS configuration */
 158                 msleep(100);
 159
 160                 reg |= OMAP343X_PBIASLITEVMODE1;
 161                 reg |= OMAP343X_PBIASLITEPWRDNZ1;
 162                 omap_ctrl_writel(reg | 0x300, control_pbias_offset);
 163         }
 164 }
 165
 166 static inline void __init board_smsc911x_init(void)
 167 {
 168         if (machine_is_omap3530_lv_som()) {
 169                 /* OMAP3530 LV SOM board */
 170                 board_smsc911x_data.gpio_irq =
 171                                         OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
 172                 omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
 173         } else if (machine_is_omap3_torpedo()) {
 174                 /* OMAP3 Torpedo board */
 175                 board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
 176                 omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
 177         } else {
 178                 /* unsupported board */
 179                 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
 180                 return;
 181         }
 182
 183         gpmc_smsc911x_init(&board_smsc911x_data);
 184 }
 185
 186 #ifdef CONFIG_OMAP_MUX
 187 static struct omap_board_mux board_mux[] __initdata = {
 188         { .reg_offset = OMAP_MUX_TERMINATOR },
 189 };
 190 #endif
 191
 192 static struct regulator_consumer_supply dummy_supplies[] = {
 193         REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
 194         REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
 195 };
 196
 197 static void __init omap3logic_init(void)
 198 {
 199         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 200         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 201         omap3torpedo_fix_pbias_voltage();
 202         omap3logic_i2c_init();
 203         omap_serial_init();
 204         omap_sdrc_init(NULL, NULL);
 205         board_mmc_init();
 206         board_smsc911x_init();
 207
 208         /* Ensure SDRC pins are mux'd for self-refresh */
 209         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 210         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 211 }
 212
 213 MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
 214         .atag_offset    = 0x100,
 215         .reserve        = omap_reserve,
 216         .map_io         = omap3_map_io,
 217         .init_early     = omap35xx_init_early,
 218         .init_irq       = omap3_init_irq,
 219         .handle_irq     = omap3_intc_handle_irq,
 220         .init_machine   = omap3logic_init,
 221         .timer          = &omap3_timer,
 222         .restart        = omap_prcm_restart,
 223 MACHINE_END
 224
 225 MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
 226         .atag_offset    = 0x100,
 227         .reserve        = omap_reserve,
 228         .map_io         = omap3_map_io,
 229         .init_early     = omap35xx_init_early,
 230         .init_irq       = omap3_init_irq,
 231         .handle_irq     = omap3_intc_handle_irq,
 232         .init_machine   = omap3logic_init,
 233         .timer          = &omap3_timer,
 234         .restart        = omap_prcm_restart,
 235 MACHINE_END