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-rw-r--r--arch/arm/mach-shmobile/board-ag5evm.c65
-rw-r--r--arch/arm/mach-shmobile/board-mackerel.c34
-rw-r--r--arch/sh/boards/mach-ecovec24/setup.c37
-rw-r--r--arch/sh/boards/mach-kfr2r09/lcd_wqvga.c48
-rw-r--r--arch/sh/boards/mach-kfr2r09/setup.c19
-rw-r--r--arch/sh/include/mach-kfr2r09/mach/kfr2r09.h2
-rw-r--r--drivers/video/backlight/Kconfig19
-rw-r--r--drivers/video/backlight/Makefile3
-rw-r--r--drivers/video/backlight/bd6107.c213
-rw-r--r--drivers/video/backlight/gpio_backlight.c133
-rw-r--r--drivers/video/backlight/lv5207lp.c171
-rw-r--r--include/linux/platform_data/bd6107.h19
-rw-r--r--include/linux/platform_data/gpio_backlight.h21
-rw-r--r--include/linux/platform_data/lv5207lp.h19
14 files changed, 665 insertions, 138 deletions
diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c
index c7540710906f..f6d64495c405 100644
--- a/arch/arm/mach-shmobile/board-ag5evm.c
+++ b/arch/arm/mach-shmobile/board-ag5evm.c
@@ -41,6 +41,7 @@
#include <linux/mmc/sh_mmcif.h>
#include <linux/mmc/sh_mobile_sdhi.h>
#include <linux/mfd/tmio.h>
+#include <linux/platform_data/bd6107.h>
#include <linux/sh_clk.h>
#include <linux/irqchip/arm-gic.h>
#include <video/sh_mobile_lcdc.h>
@@ -291,47 +292,7 @@ static struct platform_device mipidsi0_device = {
},
};
-static unsigned char lcd_backlight_seq[3][2] = {
- { 0x04, 0x07 },
- { 0x23, 0x80 },
- { 0x03, 0x01 },
-};
-
-static int lcd_backlight_set_brightness(int brightness)
-{
- struct i2c_adapter *adap;
- struct i2c_msg msg;
- unsigned int i;
- int ret;
-
- if (brightness == 0) {
- /* Reset the chip */
- gpio_set_value(235, 0);
- mdelay(24);
- gpio_set_value(235, 1);
- return 0;
- }
-
- adap = i2c_get_adapter(1);
- if (adap == NULL)
- return -ENODEV;
-
- for (i = 0; i < ARRAY_SIZE(lcd_backlight_seq); i++) {
- msg.addr = 0x6d;
- msg.buf = &lcd_backlight_seq[i][0];
- msg.len = 2;
- msg.flags = 0;
-
- ret = i2c_transfer(adap, &msg, 1);
- if (ret < 0)
- break;
- }
-
- i2c_put_adapter(adap);
- return ret < 0 ? ret : 0;
-}
-
-/* LCDC0 */
+/* LCDC0 and backlight */
static const struct fb_videomode lcdc0_modes[] = {
{
.name = "R63302(QHD)",
@@ -361,11 +322,6 @@ static struct sh_mobile_lcdc_info lcdc0_info = {
.width = 44,
.height = 79,
},
- .bl_info = {
- .name = "sh_mobile_lcdc_bl",
- .max_brightness = 1,
- .set_brightness = lcd_backlight_set_brightness,
- },
.tx_dev = &mipidsi0_device,
}
};
@@ -394,6 +350,17 @@ static struct platform_device lcdc0_device = {
},
};
+static struct bd6107_platform_data backlight_data = {
+ .fbdev = &lcdc0_device.dev,
+ .reset = 235,
+ .def_value = 0,
+};
+
+static struct i2c_board_info backlight_board_info = {
+ I2C_BOARD_INFO("bd6107", 0x6d),
+ .platform_data = &backlight_data,
+};
+
/* Fixed 2.8V regulators to be used by SDHI0 */
static struct regulator_consumer_supply fixed2v8_power_consumers[] =
{
@@ -648,15 +615,15 @@ static void __init ag5evm_init(void)
gpio_set_value(217, 1);
mdelay(100);
- /* LCD backlight controller */
- gpio_request_one(235, GPIOF_OUT_INIT_LOW, NULL); /* RESET */
- lcd_backlight_set_brightness(0);
#ifdef CONFIG_CACHE_L2X0
/* Shared attribute override enable, 64K*8way */
l2x0_init(IOMEM(0xf0100000), 0x00460000, 0xc2000fff);
#endif
sh73a0_add_standard_devices();
+
+ i2c_register_board_info(1, &backlight_board_info, 1);
+
platform_add_devices(ag5evm_devices, ARRAY_SIZE(ag5evm_devices));
}
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 85f51a849a50..af06753eb809 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -41,6 +41,7 @@
#include <linux/mtd/physmap.h>
#include <linux/mtd/sh_flctl.h>
#include <linux/pinctrl/machine.h>
+#include <linux/platform_data/gpio_backlight.h>
#include <linux/pm_clock.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
@@ -49,7 +50,6 @@
#include <linux/tca6416_keypad.h>
#include <linux/usb/renesas_usbhs.h>
#include <linux/dma-mapping.h>
-
#include <video/sh_mobile_hdmi.h>
#include <video/sh_mobile_lcdc.h>
#include <media/sh_mobile_ceu.h>
@@ -346,7 +346,7 @@ static struct platform_device meram_device = {
},
};
-/* LCDC */
+/* LCDC and backlight */
static struct fb_videomode mackerel_lcdc_modes[] = {
{
.name = "WVGA Panel",
@@ -362,13 +362,6 @@ static struct fb_videomode mackerel_lcdc_modes[] = {
},
};
-static int mackerel_set_brightness(int brightness)
-{
- gpio_set_value(31, brightness);
-
- return 0;
-}
-
static const struct sh_mobile_meram_cfg lcd_meram_cfg = {
.icb[0] = {
.meram_size = 0x40,
@@ -393,11 +386,6 @@ static struct sh_mobile_lcdc_info lcdc_info = {
.width = 152,
.height = 91,
},
- .bl_info = {
- .name = "sh_mobile_lcdc_bl",
- .max_brightness = 1,
- .set_brightness = mackerel_set_brightness,
- },
.meram_cfg = &lcd_meram_cfg,
}
};
@@ -425,6 +413,20 @@ static struct platform_device lcdc_device = {
},
};
+static struct gpio_backlight_platform_data gpio_backlight_data = {
+ .fbdev = &lcdc_device.dev,
+ .gpio = 31,
+ .def_value = 1,
+ .name = "backlight",
+};
+
+static struct platform_device gpio_backlight_device = {
+ .name = "gpio-backlight",
+ .dev = {
+ .platform_data = &gpio_backlight_data,
+ },
+};
+
/* HDMI */
static struct sh_mobile_hdmi_info hdmi_info = {
.flags = HDMI_SND_SRC_SPDIF,
@@ -1231,6 +1233,7 @@ static struct platform_device *mackerel_devices[] __initdata = {
&nor_flash_device,
&smc911x_device,
&lcdc_device,
+ &gpio_backlight_device,
&usbhs0_device,
&usbhs1_device,
&leds_device,
@@ -1441,9 +1444,6 @@ static void __init mackerel_init(void)
ARRAY_SIZE(mackerel_pinctrl_map));
sh7372_pinmux_init();
- /* backlight, off by default */
- gpio_request_one(31, GPIOF_OUT_INIT_LOW, NULL);
-
gpio_request_one(151, GPIOF_OUT_INIT_HIGH, NULL); /* LCDDON */
/* USBHS0 */
diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index 61fade0ffa96..bcbb86bd659e 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -30,6 +30,7 @@
#include <linux/spi/mmc_spi.h>
#include <linux/input.h>
#include <linux/input/sh_keysc.h>
+#include <linux/platform_data/gpio_backlight.h>
#include <linux/sh_eth.h>
#include <linux/sh_intc.h>
#include <linux/videodev2.h>
@@ -303,7 +304,7 @@ static struct platform_device usbhs_device = {
.resource = usbhs_resources,
};
-/* LCDC */
+/* LCDC and backlight */
static const struct fb_videomode ecovec_lcd_modes[] = {
{
.name = "Panel",
@@ -334,13 +335,6 @@ static const struct fb_videomode ecovec_dvi_modes[] = {
},
};
-static int ecovec24_set_brightness(int brightness)
-{
- gpio_set_value(GPIO_PTR1, brightness);
-
- return 0;
-}
-
static struct sh_mobile_lcdc_info lcdc_info = {
.ch[0] = {
.interface_type = RGB18,
@@ -350,11 +344,6 @@ static struct sh_mobile_lcdc_info lcdc_info = {
.width = 152,
.height = 91,
},
- .bl_info = {
- .name = "sh_mobile_lcdc_bl",
- .max_brightness = 1,
- .set_brightness = ecovec24_set_brightness,
- },
}
};
@@ -380,6 +369,20 @@ static struct platform_device lcdc_device = {
},
};
+static struct gpio_backlight_platform_data gpio_backlight_data = {
+ .fbdev = &lcdc_device.dev,
+ .gpio = GPIO_PTR1,
+ .def_value = 1,
+ .name = "backlight",
+};
+
+static struct platform_device gpio_backlight_device = {
+ .name = "gpio-backlight",
+ .dev = {
+ .platform_data = &gpio_backlight_data,
+ },
+};
+
/* CEU0 */
static struct sh_mobile_ceu_info sh_mobile_ceu0_info = {
.flags = SH_CEU_FLAG_USE_8BIT_BUS,
@@ -1049,6 +1052,7 @@ static struct platform_device *ecovec_devices[] __initdata = {
&usb1_common_device,
&usbhs_device,
&lcdc_device,
+ &gpio_backlight_device,
&ceu0_device,
&ceu1_device,
&keysc_device,
@@ -1239,11 +1243,9 @@ static int __init arch_setup(void)
gpio_request(GPIO_PTE6, NULL);
gpio_request(GPIO_PTU1, NULL);
- gpio_request(GPIO_PTR1, NULL);
gpio_request(GPIO_PTA2, NULL);
gpio_direction_input(GPIO_PTE6);
gpio_direction_output(GPIO_PTU1, 0);
- gpio_direction_output(GPIO_PTR1, 0);
gpio_direction_output(GPIO_PTA2, 0);
/* I/O buffer drive ability is high */
@@ -1256,6 +1258,9 @@ static int __init arch_setup(void)
lcdc_info.ch[0].lcd_modes = ecovec_dvi_modes;
lcdc_info.ch[0].num_modes = ARRAY_SIZE(ecovec_dvi_modes);
+ /* No backlight */
+ gpio_backlight_data.fbdev = NULL;
+
gpio_set_value(GPIO_PTA2, 1);
gpio_set_value(GPIO_PTU1, 1);
} else {
@@ -1265,8 +1270,6 @@ static int __init arch_setup(void)
lcdc_info.ch[0].lcd_modes = ecovec_lcd_modes;
lcdc_info.ch[0].num_modes = ARRAY_SIZE(ecovec_lcd_modes);
- gpio_set_value(GPIO_PTR1, 1);
-
/* FIXME
*
* LCDDON control is needed for Panel,
diff --git a/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
index c62050332629..355a78a3b313 100644
--- a/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
+++ b/arch/sh/boards/mach-kfr2r09/lcd_wqvga.c
@@ -276,51 +276,3 @@ void kfr2r09_lcd_start(void *sohandle, struct sh_mobile_lcdc_sys_bus_ops *so)
{
write_memory_start(sohandle, so);
}
-
-#define CTRL_CKSW 0x10
-#define CTRL_C10 0x20
-#define CTRL_CPSW 0x80
-#define MAIN_MLED4 0x40
-#define MAIN_MSW 0x80
-
-int kfr2r09_lcd_set_brightness(int brightness)
-{
- struct i2c_adapter *a;
- struct i2c_msg msg;
- unsigned char buf[2];
- int ret;
-
- a = i2c_get_adapter(0);
- if (!a)
- return -ENODEV;
-
- buf[0] = 0x00;
- if (brightness)
- buf[1] = CTRL_CPSW | CTRL_C10 | CTRL_CKSW;
- else
- buf[1] = 0;
-
- msg.addr = 0x75;
- msg.buf = buf;
- msg.len = 2;
- msg.flags = 0;
- ret = i2c_transfer(a, &msg, 1);
- if (ret != 1)
- return -ENODEV;
-
- buf[0] = 0x01;
- if (brightness)
- buf[1] = MAIN_MSW | MAIN_MLED4 | 0x0c;
- else
- buf[1] = 0;
-
- msg.addr = 0x75;
- msg.buf = buf;
- msg.len = 2;
- msg.flags = 0;
- ret = i2c_transfer(a, &msg, 1);
- if (ret != 1)
- return -ENODEV;
-
- return 0;
-}
diff --git a/arch/sh/boards/mach-kfr2r09/setup.c b/arch/sh/boards/mach-kfr2r09/setup.c
index ab502f12ef57..1df4398f8375 100644
--- a/arch/sh/boards/mach-kfr2r09/setup.c
+++ b/arch/sh/boards/mach-kfr2r09/setup.c
@@ -21,6 +21,7 @@
#include <linux/input.h>
#include <linux/input/sh_keysc.h>
#include <linux/i2c.h>
+#include <linux/platform_data/lv5207lp.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/usb/r8a66597.h>
@@ -159,11 +160,6 @@ static struct sh_mobile_lcdc_info kfr2r09_sh_lcdc_info = {
.setup_sys = kfr2r09_lcd_setup,
.start_transfer = kfr2r09_lcd_start,
},
- .bl_info = {
- .name = "sh_mobile_lcdc_bl",
- .max_brightness = 1,
- .set_brightness = kfr2r09_lcd_set_brightness,
- },
.sys_bus_cfg = {
.ldmt2r = 0x07010904,
.ldmt3r = 0x14012914,
@@ -195,6 +191,17 @@ static struct platform_device kfr2r09_sh_lcdc_device = {
},
};
+static struct lv5207lp_platform_data kfr2r09_backlight_data = {
+ .fbdev = &kfr2r09_sh_lcdc_device.dev,
+ .def_value = 13,
+ .max_value = 13,
+};
+
+static struct i2c_board_info kfr2r09_backlight_board_info = {
+ I2C_BOARD_INFO("lv5207lp", 0x75),
+ .platform_data = &kfr2r09_backlight_data,
+};
+
static struct r8a66597_platdata kfr2r09_usb0_gadget_data = {
.on_chip = 1,
};
@@ -627,6 +634,8 @@ static int __init kfr2r09_devices_setup(void)
gpio_request(GPIO_FN_SDHI0CMD, NULL);
gpio_request(GPIO_FN_SDHI0CLK, NULL);
+ i2c_register_board_info(0, &kfr2r09_backlight_board_info, 1);
+
return platform_add_devices(kfr2r09_devices,
ARRAY_SIZE(kfr2r09_devices));
}
diff --git a/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h b/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
index c20c9e5f5eab..79f154e5cb9c 100644
--- a/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
+++ b/arch/sh/include/mach-kfr2r09/mach/kfr2r09.h
@@ -4,13 +4,11 @@
#include <video/sh_mobile_lcdc.h>
#if defined(CONFIG_FB_SH_MOBILE_LCDC) || defined(CONFIG_FB_SH_MOBILE_LCDC_MODULE)
-int kfr2r09_lcd_set_brightness(int brightness);
int kfr2r09_lcd_setup(void *sys_ops_handle,
struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
void kfr2r09_lcd_start(void *sys_ops_handle,
struct sh_mobile_lcdc_sys_bus_ops *sys_ops);
#else
-static int kfr2r09_lcd_set_brightness(int brightness) {}
static int kfr2r09_lcd_setup(void *sys_ops_handle,
struct sh_mobile_lcdc_sys_bus_ops *sys_ops)
{
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index d5ab6583f440..d4a7a351d67c 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -425,6 +425,25 @@ config BACKLIGHT_AS3711
If you have an Austrian Microsystems AS3711 say Y to enable the
backlight driver.
+config BACKLIGHT_GPIO
+ tristate "Generic GPIO based Backlight Driver"
+ depends on GPIOLIB
+ help
+ If you have a LCD backlight adjustable by GPIO, say Y to enable
+ this driver.
+
+config BACKLIGHT_LV5207LP
+ tristate "Sanyo LV5207LP Backlight"
+ depends on I2C
+ help
+ If you have a Sanyo LV5207LP say Y to enable the backlight driver.
+
+config BACKLIGHT_BD6107
+ tristate "Rohm BD6107 Backlight"
+ depends on I2C
+ help
+ If you have a Rohm BD6107 say Y to enable the backlight driver.
+
endif # BACKLIGHT_CLASS_DEVICE
endif # BACKLIGHT_LCD_SUPPORT
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 92711fe60464..38e1babb1946 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -26,12 +26,14 @@ obj-$(CONFIG_BACKLIGHT_ADP8870) += adp8870_bl.o
obj-$(CONFIG_BACKLIGHT_APPLE) += apple_bl.o
obj-$(CONFIG_BACKLIGHT_AS3711) += as3711_bl.o
obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
+obj-$(CONFIG_BACKLIGHT_BD6107) += bd6107.o
obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
obj-$(CONFIG_BACKLIGHT_DA903X) += da903x_bl.o
obj-$(CONFIG_BACKLIGHT_DA9052) += da9052_bl.o
obj-$(CONFIG_BACKLIGHT_EP93XX) += ep93xx_bl.o
obj-$(CONFIG_BACKLIGHT_GENERIC) += generic_bl.o
+obj-$(CONFIG_BACKLIGHT_GPIO) += gpio_backlight.o
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
obj-$(CONFIG_BACKLIGHT_HP700) += jornada720_bl.o
obj-$(CONFIG_BACKLIGHT_LM3533) += lm3533_bl.o
@@ -40,6 +42,7 @@ obj-$(CONFIG_BACKLIGHT_LM3639) += lm3639_bl.o
obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
obj-$(CONFIG_BACKLIGHT_LP855X) += lp855x_bl.o
obj-$(CONFIG_BACKLIGHT_LP8788) += lp8788_bl.o
+obj-$(CONFIG_BACKLIGHT_LV5207LP) += lv5207lp.o
obj-$(CONFIG_BACKLIGHT_MAX8925) += max8925_bl.o
obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
obj-$(CONFIG_BACKLIGHT_OT200) += ot200_bl.o
diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c
new file mode 100644
index 000000000000..15e3294b29fe
--- /dev/null
+++ b/drivers/video/backlight/bd6107.c
@@ -0,0 +1,213 @@
+/*
+ * ROHM Semiconductor BD6107 LED Driver
+ *
+ * Copyright (C) 2013 Ideas on board SPRL
+ *
+ * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/platform_data/bd6107.h>
+#include <linux/slab.h>
+
+#define BD6107_PSCNT1 0x00
+#define BD6107_PSCNT1_PSCNTREG2 (1 << 2)
+#define BD6107_PSCNT1_PSCNTREG1 (1 << 0)
+#define BD6107_REGVSET 0x02
+#define BD6107_REGVSET_REG1VSET_2_85V (1 << 2)
+#define BD6107_REGVSET_REG1VSET_2_80V (0 << 2)
+#define BD6107_LEDCNT1 0x03
+#define BD6107_LEDCNT1_LEDONOFF2 (1 << 1)
+#define BD6107_LEDCNT1_LEDONOFF1 (1 << 0)
+#define BD6107_PORTSEL 0x04
+#define BD6107_PORTSEL_LEDM(n) (1 << (n))
+#define BD6107_RGB1CNT1 0x05
+#define BD6107_RGB1CNT2 0x06
+#define BD6107_RGB1CNT3 0x07
+#define BD6107_RGB1CNT4 0x08
+#define BD6107_RGB1CNT5 0x09
+#define BD6107_RGB1FLM 0x0a
+#define BD6107_RGB2CNT1 0x0b
+#define BD6107_RGB2CNT2 0x0c
+#define BD6107_RGB2CNT3 0x0d
+#define BD6107_RGB2CNT4 0x0e
+#define BD6107_RGB2CNT5 0x0f
+#define BD6107_RGB2FLM 0x10
+#define BD6107_PSCONT3 0x11
+#define BD6107_SMMONCNT 0x12
+#define BD6107_DCDCCNT 0x13
+#define BD6107_IOSEL 0x14
+#define BD6107_OUT1 0x15
+#define BD6107_OUT2 0x16
+#define BD6107_MASK1 0x17
+#define BD6107_MASK2 0x18
+#define BD6107_FACTOR1 0x19
+#define BD6107_FACTOR2 0x1a
+#define BD6107_CLRFACT1 0x1b
+#define BD6107_CLRFACT2 0x1c
+#define BD6107_STATE1 0x1d
+#define BD6107_LSIVER 0x1e
+#define BD6107_GRPSEL 0x1f
+#define BD6107_LEDCNT2 0x20
+#define BD6107_LEDCNT3 0x21
+#define BD6107_MCURRENT 0x22
+#define BD6107_MAINCNT1 0x23
+#define BD6107_MAINCNT2 0x24
+#define BD6107_SLOPECNT 0x25
+#define BD6107_MSLOPE 0x26
+#define BD6107_RGBSLOPE 0x27
+#define BD6107_TEST 0x29
+#define BD6107_SFTRST 0x2a
+#define BD6107_SFTRSTGD 0x2b
+
+struct bd6107 {
+ struct i2c_client *client;
+ struct backlight_device *backlight;
+ struct bd6107_platform_data *pdata;
+};
+
+static int bd6107_write(struct bd6107 *bd, u8 reg, u8 data)
+{
+ return i2c_smbus_write_byte_data(bd->client, reg, data);
+}
+
+static int bd6107_backlight_update_status(struct backlight_device *backlight)
+{
+ struct bd6107 *bd = bl_get_data(backlight);
+ int brightness = backlight->props.brightness;
+
+ if (backlight->props.power != FB_BLANK_UNBLANK ||
+ backlight->props.fb_blank != FB_BLANK_UNBLANK ||
+ backlight->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ if (brightness) {
+ bd6107_write(bd, BD6107_PORTSEL, BD6107_PORTSEL_LEDM(2) |
+ BD6107_PORTSEL_LEDM(1) | BD6107_PORTSEL_LEDM(0));
+ bd6107_write(bd, BD6107_MAINCNT1, brightness);
+ bd6107_write(bd, BD6107_LEDCNT1, BD6107_LEDCNT1_LEDONOFF1);
+ } else {
+ gpio_set_value(bd->pdata->reset, 0);
+ msleep(24);
+ gpio_set_value(bd->pdata->reset, 1);
+ }
+
+ return 0;
+}
+
+static int bd6107_backlight_get_brightness(struct backlight_device *backlight)
+{
+ return backlight->props.brightness;
+}
+
+static int bd6107_backlight_check_fb(struct backlight_device *backlight,
+ struct fb_info *info)
+{
+ struct bd6107 *bd = bl_get_data(backlight);
+
+ return bd->pdata->fbdev == NULL || bd->pdata->fbdev == info->dev;
+}
+
+static const struct backlight_ops bd6107_backlight_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = bd6107_backlight_update_status,
+ .get_brightness = bd6107_backlight_get_brightness,
+ .check_fb = bd6107_backlight_check_fb,
+};
+
+static int bd6107_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct bd6107_platform_data *pdata = client->dev.platform_data;
+ struct backlight_device *backlight;
+ struct backlight_properties props;
+ struct bd6107 *bd;
+ int ret;
+
+ if (pdata == NULL || !pdata->reset) {
+ dev_err(&client->dev, "No reset GPIO in platform data\n");
+ return -EINVAL;
+ }
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_warn(&client->dev,
+ "I2C adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
+ return -EIO;
+ }
+
+ bd = devm_kzalloc(&client->dev, sizeof(*bd), GFP_KERNEL);
+ if (!bd)
+ return -ENOMEM;
+
+ bd->client = client;
+ bd->pdata = pdata;
+
+ ret = devm_gpio_request_one(&client->dev, pdata->reset,
+ GPIOF_DIR_OUT | GPIOF_INIT_LOW, "reset");
+ if (ret < 0) {
+ dev_err(&client->dev, "unable to request reset GPIO\n");
+ return ret;
+ }
+
+ memset(&props, 0, sizeof(props));
+ props.type = BACKLIGHT_RAW;
+ props.max_brightness = 128;
+ props.brightness = clamp_t(unsigned int, pdata->def_value, 0,
+ props.max_brightness);
+
+ backlight = backlight_device_register(dev_name(&client->dev),
+ &bd->client->dev, bd,
+ &bd6107_backlight_ops, &props);
+ if (IS_ERR(backlight)) {
+ dev_err(&client->dev, "failed to register backlight\n");
+ return PTR_ERR(backlight);
+ }
+
+ backlight_update_status(backlight);
+ i2c_set_clientdata(client, backlight);
+
+ return 0;
+}
+
+static int bd6107_remove(struct i2c_client *client)
+{
+ struct backlight_device *backlight = i2c_get_clientdata(client);
+
+ backlight->props.brightness = 0;
+ backlight_update_status(backlight);
+ backlight_device_unregister(backlight);
+
+ return 0;
+}
+
+static const struct i2c_device_id bd6107_ids[] = {
+ { "bd6107", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, bd6107_ids);
+
+static struct i2c_driver bd6107_driver = {
+ .driver = {
+ .name = "bd6107",
+ },
+ .probe = bd6107_probe,
+ .remove = bd6107_remove,
+ .id_table = bd6107_ids,
+};
+
+module_i2c_driver(bd6107_driver);
+
+MODULE_DESCRIPTION("Rohm BD6107 Backlight Driver");
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
new file mode 100644
index 000000000000..5fa217f9f445
--- /dev/null
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -0,0 +1,133 @@
+/*
+ * gpio_backlight.c - Simple GPIO-controlled backlight
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_data/gpio_backlight.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+struct gpio_backlight {
+ struct device *dev;
+ struct device *fbdev;
+
+ int gpio;
+ int active;
+};
+
+static int gpio_backlight_update_status(struct backlight_device *bl)
+{
+ struct gpio_backlight *gbl = bl_get_data(bl);
+ int brightness = bl->props.brightness;
+
+ if (bl->props.power != FB_BLANK_UNBLANK ||
+ bl->props.fb_blank != FB_BLANK_UNBLANK ||
+ bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ gpio_set_value(gbl->gpio, brightness ? gbl->active : !gbl->active);
+
+ return 0;
+}
+
+static int gpio_backlight_get_brightness(struct backlight_device *bl)
+{
+ return bl->props.brightness;
+}
+
+static int gpio_backlight_check_fb(struct backlight_device *bl,
+ struct fb_info *info)
+{
+ struct gpio_backlight *gbl = bl_get_data(bl);
+
+ return gbl->fbdev == NULL || gbl->fbdev == info->dev;
+}
+
+static const struct backlight_ops gpio_backlight_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = gpio_backlight_update_status,
+ .get_brightness = gpio_backlight_get_brightness,
+ .check_fb = gpio_backlight_check_fb,
+};
+
+static int gpio_backlight_probe(struct platform_device *pdev)
+{
+ struct gpio_backlight_platform_data *pdata = pdev->dev.platform_data;
+ struct backlight_properties props;
+ struct backlight_device *bl;
+ struct gpio_backlight *gbl;
+ int ret;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "failed to find platform data\n");
+ return -ENODEV;
+ }
+
+ gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL);
+ if (gbl == NULL)
+ return -ENOMEM;
+
+ gbl->dev = &pdev->dev;
+ gbl->fbdev = pdata->fbdev;
+ gbl->gpio = pdata->gpio;
+ gbl->active = pdata->active_low ? 0 : 1;
+
+ ret = devm_gpio_request_one(gbl->dev, gbl->gpio, GPIOF_DIR_OUT |
+ (gbl->active ? GPIOF_INIT_LOW
+ : GPIOF_INIT_HIGH),
+ pdata->name);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "unable to request GPIO\n");
+ return ret;
+ }
+
+ memset(&props, 0, sizeof(props));
+ props.type = BACKLIGHT_RAW;
+ props.max_brightness = 1;
+ bl = backlight_device_register(dev_name(&pdev->dev), &pdev->dev, gbl,
+ &gpio_backlight_ops, &props);
+ if (IS_ERR(bl)) {
+ dev_err(&pdev->dev, "failed to register backlight\n");
+ return PTR_ERR(bl);
+ }
+
+ bl->props.brightness = pdata->def_value;
+ backlight_update_status(bl);
+
+ platform_set_drvdata(pdev, bl);
+ return 0;
+}
+
+static int gpio_backlight_remove(struct platform_device *pdev)
+{
+ struct backlight_device *bl = platform_get_drvdata(pdev);
+
+ backlight_device_unregister(bl);
+ return 0;
+}
+
+static struct platform_driver gpio_backlight_driver = {
+ .driver = {
+ .name = "gpio-backlight",
+ .owner = THIS_MODULE,
+ },
+ .probe = gpio_backlight_probe,
+ .remove = gpio_backlight_remove,
+};
+
+module_platform_driver(gpio_backlight_driver);
+
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
+MODULE_DESCRIPTION("GPIO-based Backlight Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-backlight");
diff --git a/drivers/video/backlight/lv5207lp.c b/drivers/video/backlight/lv5207lp.c
new file mode 100644
index 000000000000..498fd73d59b9
--- /dev/null
+++ b/drivers/video/backlight/lv5207lp.c
@@ -0,0 +1,171 @@
+/*
+ * Sanyo LV5207LP LED Driver
+ *
+ * Copyright (C) 2013 Ideas on board SPRL
+ *
+ * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/platform_data/lv5207lp.h>
+#include <linux/slab.h>
+
+#define LV5207LP_CTRL1 0x00
+#define LV5207LP_CPSW (1 << 7)
+#define LV5207LP_SCTEN (1 << 6)
+#define LV5207LP_C10 (1 << 5)
+#define LV5207LP_CKSW (1 << 4)
+#define LV5207LP_RSW (1 << 3)
+#define LV5207LP_GSW (1 << 2)
+#define LV5207LP_BSW (1 << 1)
+#define LV5207LP_CTRL2 0x01
+#define LV5207LP_MSW (1 << 7)
+#define LV5207LP_MLED4 (1 << 6)
+#define LV5207LP_RED 0x02
+#define LV5207LP_GREEN 0x03
+#define LV5207LP_BLUE 0x04
+
+#define LV5207LP_MAX_BRIGHTNESS 32
+
+struct lv5207lp {
+ struct i2c_client *client;
+ struct backlight_device *backlight;
+ struct lv5207lp_platform_data *pdata;
+};
+
+static int lv5207lp_write(struct lv5207lp *lv, u8 reg, u8 data)
+{
+ return i2c_smbus_write_byte_data(lv->client, reg, data);
+}
+
+static int lv5207lp_backlight_update_status(struct backlight_device *backlight)
+{
+ struct lv5207lp *lv = bl_get_data(backlight);
+ int brightness = backlight->props.brightness;
+
+ if (backlight->props.power != FB_BLANK_UNBLANK ||
+ backlight->props.fb_blank != FB_BLANK_UNBLANK ||
+ backlight->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+ brightness = 0;
+
+ if (brightness) {
+ lv5207lp_write(lv, LV5207LP_CTRL1,
+ LV5207LP_CPSW | LV5207LP_C10 | LV5207LP_CKSW);
+ lv5207lp_write(lv, LV5207LP_CTRL2,
+ LV5207LP_MSW | LV5207LP_MLED4 |
+ (brightness - 1));
+ } else {
+ lv5207lp_write(lv, LV5207LP_CTRL1, 0);
+ lv5207lp_write(lv, LV5207LP_CTRL2, 0);
+ }
+
+ return 0;
+}
+
+static int lv5207lp_backlight_get_brightness(struct backlight_device *backlight)
+{
+ return backlight->props.brightness;
+}
+
+static int lv5207lp_backlight_check_fb(struct backlight_device *backlight,
+ struct fb_info *info)
+{
+ struct lv5207lp *lv = bl_get_data(backlight);
+
+ return lv->pdata->fbdev == NULL || lv->pdata->fbdev == info->dev;
+}
+
+static const struct backlight_ops lv5207lp_backlight_ops = {
+ .options = BL_CORE_SUSPENDRESUME,
+ .update_status = lv5207lp_backlight_update_status,
+ .get_brightness = lv5207lp_backlight_get_brightness,
+ .check_fb = lv5207lp_backlight_check_fb,
+};
+
+static int lv5207lp_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct lv5207lp_platform_data *pdata = client->dev.platform_data;
+ struct backlight_device *backlight;
+ struct backlight_properties props;
+ struct lv5207lp *lv;
+
+ if (pdata == NULL) {
+ dev_err(&client->dev, "No platform data supplied\n");
+ return -EINVAL;
+ }
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_warn(&client->dev,
+ "I2C adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");
+ return -EIO;
+ }
+
+ lv = devm_kzalloc(&client->dev, sizeof(*lv), GFP_KERNEL);
+ if (!lv)
+ return -ENOMEM;
+
+ lv->client = client;
+ lv->pdata = pdata;
+
+ memset(&props, 0, sizeof(props));
+ props.type = BACKLIGHT_RAW;
+ props.max_brightness = min_t(unsigned int, pdata->max_value,
+ LV5207LP_MAX_BRIGHTNESS);
+ props.brightness = clamp_t(unsigned int, pdata->def_value, 0,
+ props.max_brightness);
+
+ backlight = backlight_device_register(dev_name(&client->dev),
+ &lv->client->dev, lv,
+ &lv5207lp_backlight_ops, &props);
+ if (IS_ERR(backlight)) {
+ dev_err(&client->dev, "failed to register backlight\n");
+ return PTR_ERR(backlight);
+ }
+
+ backlight_update_status(backlight);
+ i2c_set_clientdata(client, backlight);
+
+ return 0;
+}
+
+static int lv5207lp_remove(struct i2c_client *client)
+{
+ struct backlight_device *backlight = i2c_get_clientdata(client);
+
+ backlight->props.brightness = 0;
+ backlight_update_status(backlight);
+ backlight_device_unregister(backlight);
+
+ return 0;
+}
+
+static const struct i2c_device_id lv5207lp_ids[] = {
+ { "lv5207lp", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lv5207lp_ids);
+
+static struct i2c_driver lv5207lp_driver = {
+ .driver = {
+ .name = "lv5207lp",
+ },
+ .probe = lv5207lp_probe,
+ .remove = lv5207lp_remove,
+ .id_table = lv5207lp_ids,
+};
+
+module_i2c_driver(lv5207lp_driver);
+
+MODULE_DESCRIPTION("Sanyo LV5207LP Backlight Driver");
+MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/platform_data/bd6107.h b/include/linux/platform_data/bd6107.h
new file mode 100644
index 000000000000..671d6502d241
--- /dev/null
+++ b/include/linux/platform_data/bd6107.h
@@ -0,0 +1,19 @@
+/*
+ * bd6107.h - Rohm BD6107 LEDs Driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __BD6107_H__
+#define __BD6107_H__
+
+struct device;
+
+struct bd6107_platform_data {
+ struct device *fbdev;
+ int reset; /* Reset GPIO */
+ unsigned int def_value;
+};
+
+#endif
diff --git a/include/linux/platform_data/gpio_backlight.h b/include/linux/platform_data/gpio_backlight.h
new file mode 100644
index 000000000000..5ae0d9c80d4d
--- /dev/null
+++ b/include/linux/platform_data/gpio_backlight.h
@@ -0,0 +1,21 @@
+/*
+ * gpio_backlight.h - Simple GPIO-controlled backlight
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __GPIO_BACKLIGHT_H__
+#define __GPIO_BACKLIGHT_H__
+
+struct device;
+
+struct gpio_backlight_platform_data {
+ struct device *fbdev;
+ int gpio;
+ int def_value;
+ bool active_low;
+ const char *name;
+};
+
+#endif
diff --git a/include/linux/platform_data/lv5207lp.h b/include/linux/platform_data/lv5207lp.h
new file mode 100644
index 000000000000..7dc4d9a219a6
--- /dev/null
+++ b/include/linux/platform_data/lv5207lp.h
@@ -0,0 +1,19 @@
+/*
+ * lv5207lp.h - Sanyo LV5207LP LEDs Driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __LV5207LP_H__
+#define __LV5207LP_H__
+
+struct device;
+
+struct lv5207lp_platform_data {
+ struct device *fbdev;
+ unsigned int max_value;
+ unsigned int def_value;
+};
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 16:28:57 +0000