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