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mach-ux500: add lm3530 ALS platform data for U5500

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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>
This commit is contained in:
Linus Walleij 2011-07-25 17:13:18 -07:00 committed by Linus Torvalds
parent 40b1445b1b
commit b09628ef56
1 changed files with 83 additions and 1 deletions
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84
arch/arm/mach-ux500/board-u5500.c
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@ -10,16 +10,97 @@
#include <linux/amba/bus.h>
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <plat/pincfg.h>
#include <plat/i2c.h>
#include <mach/hardware.h>
#include <mach/devices.h>
#include <mach/setup.h>
#include "pins-db5500.h"
#include "devices-db5500.h"
#include <linux/led-lm3530.h>
/*
* GPIO
*/
static pin_cfg_t u5500_pins[] = {
/* I2C */
GPIO218_I2C2_SCL | PIN_INPUT_PULLUP,
GPIO219_I2C2_SDA | PIN_INPUT_PULLUP,
/* DISPLAY_ENABLE */
GPIO226_GPIO | PIN_OUTPUT_LOW,
/* Backlight Enbale */
GPIO224_GPIO | PIN_OUTPUT_HIGH,
};
/*
* I2C
*/
#define U5500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
static struct nmk_i2c_controller u5500_i2c##id##_data = { \
/* \
* slave data setup time, which is \
* 250 ns,100ns,10ns which is 14,6,2 \
* respectively for a 48 Mhz \
* i2c clock \
*/ \
.slsu = _slsu, \
/* Tx FIFO threshold */ \
.tft = _tft, \
/* Rx FIFO threshold */ \
.rft = _rft, \
/* std. mode operation */ \
.clk_freq = clk, \
.sm = _sm, \
}
/*
* The board uses TODO <3> i2c controllers, initialize all of
* them with slave data setup time of 250 ns,
* Tx & Rx FIFO threshold values as 1 and standard
* mode of operation
*/
U5500_I2C_CONTROLLER(2, 0xe, 1, 1, 400000, I2C_FREQ_MODE_FAST);
static struct lm3530_platform_data u5500_als_platform_data = {
.mode = LM3530_BL_MODE_MANUAL,
.als_input_mode = LM3530_INPUT_ALS1,
.max_current = LM3530_FS_CURR_26mA,
.pwm_pol_hi = true,
.als_avrg_time = LM3530_ALS_AVRG_TIME_512ms,
.brt_ramp_law = 1, /* Linear */
.brt_ramp_fall = LM3530_RAMP_TIME_8s,
.brt_ramp_rise = LM3530_RAMP_TIME_8s,
.als1_resistor_sel = LM3530_ALS_IMPD_13_53kOhm,
.als2_resistor_sel = LM3530_ALS_IMPD_Z,
.als_vmin = 730, /* mV */
.als_vmax = 1020, /* mV */
.brt_val = 0x7F, /* Max brightness */
};
static struct i2c_board_info __initdata u5500_i2c2_devices[] = {
{
/* Backlight */
I2C_BOARD_INFO("lm3530-led", 0x36),
.platform_data = &u5500_als_platform_data,
},
};
static void __init u5500_i2c_init(void)
{
db5500_add_i2c2(&u5500_i2c2_data);
i2c_register_board_info(2, ARRAY_AND_SIZE(u5500_i2c2_devices));
}
static void __init u5500_uart_init(void)
{
db5500_add_uart0(NULL);
@ -30,7 +111,8 @@ static void __init u5500_uart_init(void)
static void __init u5500_init_machine(void)
{
u5500_init_devices();
nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins));
u5500_i2c_init();
u5500_sdi_init();
u5500_uart_init();
}