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authorLinus Walleij <linus.walleij@stericsson.com>2011-07-25 17:13:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-25 20:57:15 -0700
commitb09628ef56352a77bcf38e314869a8205c21a756 (patch)
treee2820312f7710203236bf57901fd42110f3fa489 /arch/arm/mach-ux500
parent40b1445b1b6afc1ddac6ac31f4533277a0fb75dc (diff)
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mach-ux500: add lm3530 ALS platform data for U5500
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>
Diffstat (limited to 'arch/arm/mach-ux500')
-rw-r--r--arch/arm/mach-ux500/board-u5500.c84
1 files changed, 83 insertions, 1 deletions
diff --git a/arch/arm/mach-ux500/board-u5500.c b/arch/arm/mach-ux500/board-u5500.c
index 44fd3b5c33e..e58f0f56242 100644
--- a/arch/arm/mach-ux500/board-u5500.c
+++ b/arch/arm/mach-ux500/board-u5500.c
@@ -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();
}