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b09628ef56
From: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com> platform data for simple backlight driver for LM3530 in the u5500 platform Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Lee Jones <lee.jones@linaro.org> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
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* License terms: GNU General Public License (GPL) version 2
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*/
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/amba/bus.h>
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#include <linux/gpio.h>
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#include <linux/irq.h>
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#include <linux/i2c.h>
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#include <asm/mach/arch.h>
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#include <asm/mach-types.h>
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#include <plat/pincfg.h>
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#include <plat/i2c.h>
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#include <mach/hardware.h>
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#include <mach/devices.h>
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#include <mach/setup.h>
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#include "pins-db5500.h"
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#include "devices-db5500.h"
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#include <linux/led-lm3530.h>
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/*
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* GPIO
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*/
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static pin_cfg_t u5500_pins[] = {
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/* I2C */
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GPIO218_I2C2_SCL | PIN_INPUT_PULLUP,
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GPIO219_I2C2_SDA | PIN_INPUT_PULLUP,
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/* DISPLAY_ENABLE */
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GPIO226_GPIO | PIN_OUTPUT_LOW,
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/* Backlight Enbale */
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GPIO224_GPIO | PIN_OUTPUT_HIGH,
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};
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/*
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* I2C
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*/
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#define U5500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
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static struct nmk_i2c_controller u5500_i2c##id##_data = { \
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/* \
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* slave data setup time, which is \
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* 250 ns,100ns,10ns which is 14,6,2 \
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* respectively for a 48 Mhz \
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* i2c clock \
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*/ \
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.slsu = _slsu, \
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/* Tx FIFO threshold */ \
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.tft = _tft, \
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/* Rx FIFO threshold */ \
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.rft = _rft, \
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/* std. mode operation */ \
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.clk_freq = clk, \
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.sm = _sm, \
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}
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/*
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* The board uses TODO <3> i2c controllers, initialize all of
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* them with slave data setup time of 250 ns,
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* Tx & Rx FIFO threshold values as 1 and standard
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* mode of operation
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*/
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U5500_I2C_CONTROLLER(2, 0xe, 1, 1, 400000, I2C_FREQ_MODE_FAST);
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static struct lm3530_platform_data u5500_als_platform_data = {
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.mode = LM3530_BL_MODE_MANUAL,
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.als_input_mode = LM3530_INPUT_ALS1,
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.max_current = LM3530_FS_CURR_26mA,
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.pwm_pol_hi = true,
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.als_avrg_time = LM3530_ALS_AVRG_TIME_512ms,
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.brt_ramp_law = 1, /* Linear */
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.brt_ramp_fall = LM3530_RAMP_TIME_8s,
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.brt_ramp_rise = LM3530_RAMP_TIME_8s,
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.als1_resistor_sel = LM3530_ALS_IMPD_13_53kOhm,
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.als2_resistor_sel = LM3530_ALS_IMPD_Z,
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.als_vmin = 730, /* mV */
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.als_vmax = 1020, /* mV */
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.brt_val = 0x7F, /* Max brightness */
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};
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static struct i2c_board_info __initdata u5500_i2c2_devices[] = {
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{
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/* Backlight */
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I2C_BOARD_INFO("lm3530-led", 0x36),
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.platform_data = &u5500_als_platform_data,
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},
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};
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static void __init u5500_i2c_init(void)
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{
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db5500_add_i2c2(&u5500_i2c2_data);
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i2c_register_board_info(2, ARRAY_AND_SIZE(u5500_i2c2_devices));
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}
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static void __init u5500_uart_init(void)
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{
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db5500_add_uart0(NULL);
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db5500_add_uart1(NULL);
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db5500_add_uart2(NULL);
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}
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static void __init u5500_init_machine(void)
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{
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u5500_init_devices();
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nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins));
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u5500_i2c_init();
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u5500_sdi_init();
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u5500_uart_init();
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}
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MACHINE_START(U5500, "ST-Ericsson U5500 Platform")
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.boot_params = 0x00000100,
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.map_io = u5500_map_io,
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.init_irq = ux500_init_irq,
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.timer = &ux500_timer,
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.init_machine = u5500_init_machine,
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MACHINE_END
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