arch/arm/mach-ux500/board-u5500.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2010
   3  *
   4  * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
   5  * License terms: GNU General Public License (GPL) version 2
   6  */
   7
   8 #include <linux/init.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/amba/bus.h>
  11 #include <linux/irq.h>
  12 #include <linux/i2c.h>
  13 #include <linux/mfd/abx500/ab5500.h>
  14
  15 #include <asm/hardware/gic.h>
  16 #include <asm/mach/arch.h>
  17 #include <asm/mach-types.h>
  18
  19 #include <plat/pincfg.h>
  20 #include <plat/i2c.h>
  21 #include <plat/gpio-nomadik.h>
  22
  23 #include <mach/hardware.h>
  24 #include <mach/devices.h>
  25 #include <mach/setup.h>
  26
  27 #include "pins-db5500.h"
  28 #include "devices-db5500.h"
  29 #include <linux/led-lm3530.h>
  30
  31 /*
  32  * GPIO
  33  */
  34
  35 static pin_cfg_t u5500_pins[] = {
  36         /* I2C */
  37         GPIO218_I2C2_SCL        | PIN_INPUT_PULLUP,
  38         GPIO219_I2C2_SDA        | PIN_INPUT_PULLUP,
  39
  40         /* DISPLAY_ENABLE */
  41         GPIO226_GPIO        | PIN_OUTPUT_LOW,
  42
  43         /* Backlight Enbale */
  44         GPIO224_GPIO        | PIN_OUTPUT_HIGH,
  45 };
  46 /*
  47  * I2C
  48  */
  49
  50 #define U5500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
  51 static struct nmk_i2c_controller u5500_i2c##id##_data = { \
  52         /*                              \
  53          * slave data setup time, which is      \
  54          * 250 ns,100ns,10ns which is 14,6,2    \
  55          * respectively for a 48 Mhz    \
  56          * i2c clock                    \
  57          */                             \
  58         .slsu           = _slsu,        \
  59         /* Tx FIFO threshold */         \
  60         .tft            = _tft,         \
  61         /* Rx FIFO threshold */         \
  62         .rft            = _rft,         \
  63         /* std. mode operation */       \
  64         .clk_freq       = clk,          \
  65         .sm             = _sm,          \
  66 }
  67 /*
  68  * The board uses TODO <3> i2c controllers, initialize all of
  69  * them with slave data setup time of 250 ns,
  70  * Tx & Rx FIFO threshold values as 1 and standard
  71  * mode of operation
  72  */
  73
  74 U5500_I2C_CONTROLLER(2, 0xe, 1, 1, 400000, I2C_FREQ_MODE_FAST);
  75
  76 static struct lm3530_platform_data u5500_als_platform_data = {
  77         .mode = LM3530_BL_MODE_MANUAL,
  78         .als_input_mode = LM3530_INPUT_ALS1,
  79         .max_current = LM3530_FS_CURR_26mA,
  80         .pwm_pol_hi = true,
  81         .als_avrg_time = LM3530_ALS_AVRG_TIME_512ms,
  82         .brt_ramp_law = 1,      /* Linear */
  83         .brt_ramp_fall = LM3530_RAMP_TIME_8s,
  84         .brt_ramp_rise = LM3530_RAMP_TIME_8s,
  85         .als1_resistor_sel = LM3530_ALS_IMPD_13_53kOhm,
  86         .als2_resistor_sel = LM3530_ALS_IMPD_Z,
  87         .als_vmin = 730,        /* mV */
  88         .als_vmax = 1020,       /* mV */
  89         .brt_val = 0x7F,        /* Max brightness */
  90 };
  91
  92 static struct i2c_board_info __initdata u5500_i2c2_devices[] = {
  93         {
  94                 /* Backlight */
  95                 I2C_BOARD_INFO("lm3530-led", 0x36),
  96                 .platform_data = &u5500_als_platform_data,
  97         },
  98 };
  99
 100 static void __init u5500_i2c_init(struct device *parent)
 101 {
 102         db5500_add_i2c2(parent, &u5500_i2c2_data);
 103         i2c_register_board_info(2, ARRAY_AND_SIZE(u5500_i2c2_devices));
 104 }
 105
 106 static struct ab5500_platform_data ab5500_plf_data = {
 107         .irq = {
 108                 .base = 0,
 109                 .count = 0,
 110         },
 111         .init_settings = NULL,
 112         .init_settings_sz = 0,
 113         .pm_power_off = false,
 114 };
 115
 116 static struct platform_device ab5500_device = {
 117         .name = "ab5500-core",
 118         .id = 0,
 119         .dev = {
 120                 .platform_data = &ab5500_plf_data,
 121         },
 122         .num_resources = 0,
 123 };
 124
 125 static struct platform_device *u5500_platform_devices[] __initdata = {
 126         &ab5500_device,
 127 };
 128
 129 static void __init u5500_uart_init(struct device *parent)
 130 {
 131         db5500_add_uart0(parent, NULL);
 132         db5500_add_uart1(parent, NULL);
 133         db5500_add_uart2(parent, NULL);
 134 }
 135
 136 static void __init u5500_init_machine(void)
 137 {
 138         struct device *parent = NULL;
 139         int i;
 140
 141         parent = u5500_init_devices();
 142         nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins));
 143
 144         u5500_i2c_init(parent);
 145         u5500_sdi_init(parent);
 146         u5500_uart_init(parent);
 147
 148         for (i = 0; i < ARRAY_SIZE(u5500_platform_devices); i++)
 149                 u5500_platform_devices[i]->dev.parent = parent;
 150
 151         platform_add_devices(u5500_platform_devices,
 152                 ARRAY_SIZE(u5500_platform_devices));
 153 }
 154
 155 MACHINE_START(U5500, "ST-Ericsson U5500 Platform")
 156         .atag_offset    = 0x100,
 157         .map_io         = u5500_map_io,
 158         .init_irq       = ux500_init_irq,
 159         .timer          = &ux500_timer,
 160         .handle_irq     = gic_handle_irq,
 161         .init_machine   = u5500_init_machine,
 162 MACHINE_END