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Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight: backlight: Add driver for Tabletkiosk Sahara TouchIT-213 Tablet PC backlight: da903x: Add backlight driver for DA9030/DA9034 tosa: add support for bl/lcd driver backlight: add support for Sharp SL-6000 LCD and backlight drivers
This commit is contained in:
Linus Torvalds
commit
900bca3494
@ -193,4 +193,7 @@
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#define TOSA_KEY_MAIL KEY_MAIL
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#endif
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struct spi_device;
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extern int tosa_bl_enable(struct spi_device *spi, int enable);
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#endif /* _ASM_ARCH_TOSA_H_ */
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@ -31,6 +31,7 @@
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#include <linux/gpio.h>
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#include <linux/pda_power.h>
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#include <linux/rfkill.h>
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#include <linux/spi/spi.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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@ -42,6 +43,7 @@
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#include <mach/mmc.h>
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#include <mach/udc.h>
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#include <mach/tosa_bt.h>
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#include <mach/pxa2xx_spi.h>
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#include <asm/mach/arch.h>
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#include <mach/tosa.h>
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@ -612,7 +614,7 @@ static int tosa_tc6393xb_enable(struct platform_device *dev)
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rc = gpio_request(TOSA_GPIO_TC6393XB_SUSPEND, "tc6393xb #suspend");
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if (rc)
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goto err_req_suspend;
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rc = gpio_request(TOSA_GPIO_TC6393XB_L3V_ON, "l3v");
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rc = gpio_request(TOSA_GPIO_TC6393XB_L3V_ON, "tc6393xb l3v");
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if (rc)
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goto err_req_l3v;
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rc = gpio_direction_output(TOSA_GPIO_TC6393XB_L3V_ON, 0);
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@ -772,6 +774,20 @@ static struct platform_device tosa_bt_device = {
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.dev.platform_data = &tosa_bt_data,
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};
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static struct pxa2xx_spi_master pxa_ssp_master_info = {
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.num_chipselect = 1,
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};
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static struct spi_board_info spi_board_info[] __initdata = {
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{
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.modalias = "tosa-lcd",
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// .platform_data
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.max_speed_hz = 28750,
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.bus_num = 2,
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.chip_select = 0,
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.mode = SPI_MODE_0,
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},
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};
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static struct platform_device *devices[] __initdata = {
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&tosascoop_device,
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@ -826,6 +842,9 @@ static void __init tosa_init(void)
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pxa_set_i2c_info(NULL);
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platform_scoop_config = &tosa_pcmcia_config;
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pxa2xx_set_spi_info(2, &pxa_ssp_master_info);
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spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
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clk_add_alias("CLK_CK3P6MI", &tc6393xb_device.dev, "GPIO11_CLK", NULL);
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platform_add_devices(devices, ARRAY_SIZE(devices));
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@ -75,6 +75,15 @@ config LCD_PLATFORM
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This driver provides a platform-device registered LCD power
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control interface.
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config LCD_TOSA
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tristate "Sharp SL-6000 LCD Driver"
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depends on LCD_CLASS_DEVICE && SPI
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depends on MACH_TOSA
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default n
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help
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If you have an Sharp SL-6000 Zaurus say Y to enable a driver
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for its LCD.
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#
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# Backlight
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#
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@ -171,6 +180,13 @@ config BACKLIGHT_PWM
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If you have a LCD backlight adjustable by PWM, say Y to enable
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this driver.
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config BACKLIGHT_DA903X
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tristate "Backlight Driver for DA9030/DA9034 using WLED"
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depends on BACKLIGHT_CLASS_DEVICE && PMIC_DA903X
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help
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If you have a LCD backlight connected to the WLED output of DA9030
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or DA9034 WLED output, say Y here to enable this driver.
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config BACKLIGHT_MBP_NVIDIA
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tristate "MacBook Pro Nvidia Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && X86
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@ -179,3 +195,19 @@ config BACKLIGHT_MBP_NVIDIA
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If you have an Apple Macbook Pro with Nvidia graphics hardware say Y
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to enable a driver for its backlight
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config BACKLIGHT_TOSA
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tristate "Sharp SL-6000 Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && I2C
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depends on MACH_TOSA && LCD_TOSA
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default n
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help
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If you have an Sharp SL-6000 Zaurus say Y to enable a driver
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for its backlight
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config BACKLIGHT_SAHARA
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tristate "Tabletkiosk Sahara Touch-iT Backlight Driver"
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depends on BACKLIGHT_CLASS_DEVICE && X86
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default n
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help
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If you have a Tabletkiosk Sahara Touch-iT, say y to enable the
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backlight driver.
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@ -7,6 +7,7 @@ obj-$(CONFIG_LCD_ILI9320) += ili9320.o
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obj-$(CONFIG_LCD_PLATFORM) += platform_lcd.o
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obj-$(CONFIG_LCD_VGG2432A4) += vgg2432a4.o
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obj-$(CONFIG_LCD_TDO24M) += tdo24m.o
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obj-$(CONFIG_LCD_TOSA) += tosa_lcd.o
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obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
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obj-$(CONFIG_BACKLIGHT_ATMEL_PWM) += atmel-pwm-bl.o
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@ -17,5 +18,8 @@ obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o
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obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
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obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
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obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o
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obj-$(CONFIG_BACKLIGHT_DA903X) += da903x.o
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obj-$(CONFIG_BACKLIGHT_MBP_NVIDIA) += mbp_nvidia_bl.o
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obj-$(CONFIG_BACKLIGHT_TOSA) += tosa_bl.o
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obj-$(CONFIG_BACKLIGHT_SAHARA) += kb3886_bl.o
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201
drivers/video/backlight/da903x.c
Normal file
201
drivers/video/backlight/da903x.c
Normal file
@ -0,0 +1,201 @@
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/*
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* Backlight driver for Dialog Semiconductor DA9030/DA9034
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*
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* Copyright (C) 2008 Compulab, Ltd.
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* Mike Rapoport <mike@compulab.co.il>
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*
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* Copyright (C) 2006-2008 Marvell International Ltd.
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* Eric Miao <eric.miao@marvell.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/fb.h>
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#include <linux/backlight.h>
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#include <linux/mfd/da903x.h>
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#define DA9030_WLED_CONTROL 0x25
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#define DA9030_WLED_CP_EN (1 << 6)
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#define DA9030_WLED_TRIM(x) ((x) & 0x7)
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#define DA9034_WLED_CONTROL1 0x3C
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#define DA9034_WLED_CONTROL2 0x3D
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#define DA9034_WLED_BOOST_EN (1 << 5)
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#define DA9030_MAX_BRIGHTNESS 7
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#define DA9034_MAX_BRIGHTNESS 0x7f
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struct da903x_backlight_data {
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struct device *da903x_dev;
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int id;
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int current_brightness;
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};
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static int da903x_backlight_set(struct backlight_device *bl, int brightness)
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{
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struct da903x_backlight_data *data = bl_get_data(bl);
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struct device *dev = data->da903x_dev;
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uint8_t val;
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int ret = 0;
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switch (data->id) {
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case DA9034_ID_WLED:
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ret = da903x_update(dev, DA9034_WLED_CONTROL1,
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brightness, 0x7f);
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if (ret)
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return ret;
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if (data->current_brightness && brightness == 0)
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ret = da903x_clr_bits(dev,
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DA9034_WLED_CONTROL2,
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DA9034_WLED_BOOST_EN);
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if (data->current_brightness == 0 && brightness)
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ret = da903x_set_bits(dev,
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DA9034_WLED_CONTROL2,
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DA9034_WLED_BOOST_EN);
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break;
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case DA9030_ID_WLED:
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val = DA9030_WLED_TRIM(brightness);
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val |= brightness ? DA9030_WLED_CP_EN : 0;
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ret = da903x_write(dev, DA9030_WLED_CONTROL, val);
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break;
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}
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if (ret)
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return ret;
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data->current_brightness = brightness;
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return 0;
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}
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static int da903x_backlight_update_status(struct backlight_device *bl)
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{
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int brightness = bl->props.brightness;
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if (bl->props.power != FB_BLANK_UNBLANK)
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brightness = 0;
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if (bl->props.fb_blank != FB_BLANK_UNBLANK)
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brightness = 0;
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return da903x_backlight_set(bl, brightness);
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}
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static int da903x_backlight_get_brightness(struct backlight_device *bl)
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{
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struct da903x_backlight_data *data = bl_get_data(bl);
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return data->current_brightness;
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}
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static struct backlight_ops da903x_backlight_ops = {
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.update_status = da903x_backlight_update_status,
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.get_brightness = da903x_backlight_get_brightness,
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};
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static int da903x_backlight_probe(struct platform_device *pdev)
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{
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struct da903x_backlight_data *data;
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struct backlight_device *bl;
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int max_brightness;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (data == NULL)
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return -ENOMEM;
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switch (pdev->id) {
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case DA9030_ID_WLED:
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max_brightness = DA9030_MAX_BRIGHTNESS;
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break;
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case DA9034_ID_WLED:
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max_brightness = DA9034_MAX_BRIGHTNESS;
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break;
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default:
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dev_err(&pdev->dev, "invalid backlight device ID(%d)\n",
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pdev->id);
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return -EINVAL;
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}
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data->id = pdev->id;
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data->da903x_dev = pdev->dev.parent;
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data->current_brightness = 0;
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bl = backlight_device_register(pdev->name, data->da903x_dev,
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data, &da903x_backlight_ops);
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if (IS_ERR(bl)) {
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dev_err(&pdev->dev, "failed to register backlight\n");
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return PTR_ERR(bl);
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}
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bl->props.max_brightness = max_brightness;
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bl->props.brightness = max_brightness;
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platform_set_drvdata(pdev, bl);
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backlight_update_status(bl);
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return 0;
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}
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static int da903x_backlight_remove(struct platform_device *pdev)
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{
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struct backlight_device *bl = platform_get_drvdata(pdev);
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struct da903x_backlight_data *data = bl_get_data(bl);
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backlight_device_unregister(bl);
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kfree(data);
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return 0;
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}
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#ifdef CONFIG_PM
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static int da903x_backlight_suspend(struct platform_device *pdev,
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pm_message_t state)
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{
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struct backlight_device *bl = platform_get_drvdata(pdev);
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return da903x_backlight_set(bl, 0);
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}
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static int da903x_backlight_resume(struct platform_device *pdev)
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{
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struct backlight_device *bl = platform_get_drvdata(pdev);
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backlight_update_status(bl);
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return 0;
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}
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#else
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#define da903x_backlight_suspend NULL
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#define da903x_backlight_resume NULL
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#endif
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static struct platform_driver da903x_backlight_driver = {
|
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.driver = {
|
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.name = "da903x-backlight",
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.owner = THIS_MODULE,
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},
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.probe = da903x_backlight_probe,
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.remove = da903x_backlight_remove,
|
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.suspend = da903x_backlight_suspend,
|
||||
.resume = da903x_backlight_resume,
|
||||
};
|
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|
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static int __init da903x_backlight_init(void)
|
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{
|
||||
return platform_driver_register(&da903x_backlight_driver);
|
||||
}
|
||||
module_init(da903x_backlight_init);
|
||||
|
||||
static void __exit da903x_backlight_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&da903x_backlight_driver);
|
||||
}
|
||||
module_exit(da903x_backlight_exit);
|
||||
|
||||
MODULE_DESCRIPTION("Backlight Driver for Dialog Semiconductor DA9030/DA9034");
|
||||
MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
|
||||
"Mike Rapoport <mike@compulab.co.il>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:da903x-backlight");
|
||||
204
drivers/video/backlight/kb3886_bl.c
Normal file
204
drivers/video/backlight/kb3886_bl.c
Normal file
@ -0,0 +1,204 @@
|
||||
/*
|
||||
* Backlight Driver for the KB3886 Backlight
|
||||
*
|
||||
* Copyright (c) 2007-2008 Claudio Nieder
|
||||
*
|
||||
* Based on corgi_bl.c by Richard Purdie and kb3886 driver by Robert Woerle
|
||||
*
|
||||
* 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/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/backlight.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/dmi.h>
|
||||
|
||||
#define KB3886_PARENT 0x64
|
||||
#define KB3886_IO 0x60
|
||||
#define KB3886_ADC_DAC_PWM 0xC4
|
||||
#define KB3886_PWM0_WRITE 0x81
|
||||
#define KB3886_PWM0_READ 0x41
|
||||
|
||||
static DEFINE_MUTEX(bl_mutex);
|
||||
|
||||
static void kb3886_bl_set_intensity(int intensity)
|
||||
{
|
||||
mutex_lock(&bl_mutex);
|
||||
intensity = intensity&0xff;
|
||||
outb(KB3886_ADC_DAC_PWM, KB3886_PARENT);
|
||||
msleep(10);
|
||||
outb(KB3886_PWM0_WRITE, KB3886_IO);
|
||||
msleep(10);
|
||||
outb(intensity, KB3886_IO);
|
||||
mutex_unlock(&bl_mutex);
|
||||
}
|
||||
|
||||
struct kb3886bl_machinfo {
|
||||
int max_intensity;
|
||||
int default_intensity;
|
||||
int limit_mask;
|
||||
void (*set_bl_intensity)(int intensity);
|
||||
};
|
||||
|
||||
static struct kb3886bl_machinfo kb3886_bl_machinfo = {
|
||||
.max_intensity = 0xff,
|
||||
.default_intensity = 0xa0,
|
||||
.limit_mask = 0x7f,
|
||||
.set_bl_intensity = kb3886_bl_set_intensity,
|
||||
};
|
||||
|
||||
static struct platform_device kb3886bl_device = {
|
||||
.name = "kb3886-bl",
|
||||
.dev = {
|
||||
.platform_data = &kb3886_bl_machinfo,
|
||||
},
|
||||
.id = -1,
|
||||
};
|
||||
|
||||
static struct platform_device *devices[] __initdata = {
|
||||
&kb3886bl_device,
|
||||
};
|
||||
|
||||
/*
|
||||
* Back to driver
|
||||
*/
|
||||
|
||||
static int kb3886bl_intensity;
|
||||
static struct backlight_device *kb3886_backlight_device;
|
||||
static struct kb3886bl_machinfo *bl_machinfo;
|
||||
|
||||
static unsigned long kb3886bl_flags;
|
||||
#define KB3886BL_SUSPENDED 0x01
|
||||
|
||||
static struct dmi_system_id __initdata kb3886bl_device_table[] = {
|
||||
{
|
||||
.ident = "Sahara Touch-iT",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "SDV"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "iTouch T201"),
|
||||
},
|
||||
},
|
||||
{ }
|
||||
};
|
||||
|
||||
static int kb3886bl_send_intensity(struct backlight_device *bd)
|
||||
{
|
||||
int intensity = bd->props.brightness;
|
||||
|
||||
if (bd->props.power != FB_BLANK_UNBLANK)
|
||||
intensity = 0;
|
||||
if (bd->props.fb_blank != FB_BLANK_UNBLANK)
|
||||
intensity = 0;
|
||||
if (kb3886bl_flags & KB3886BL_SUSPENDED)
|
||||
intensity = 0;
|
||||
|
||||
bl_machinfo->set_bl_intensity(intensity);
|
||||
|
||||
kb3886bl_intensity = intensity;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int kb3886bl_suspend(struct platform_device *pdev, pm_message_t state)
|
||||
{
|
||||
struct backlight_device *bd = platform_get_drvdata(pdev);
|
||||
|
||||
kb3886bl_flags |= KB3886BL_SUSPENDED;
|
||||
backlight_update_status(bd);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int kb3886bl_resume(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bd = platform_get_drvdata(pdev);
|
||||
|
||||
kb3886bl_flags &= ~KB3886BL_SUSPENDED;
|
||||
backlight_update_status(bd);
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define kb3886bl_suspend NULL
|
||||
#define kb3886bl_resume NULL
|
||||
#endif
|
||||
|
||||
static int kb3886bl_get_intensity(struct backlight_device *bd)
|
||||
{
|
||||
return kb3886bl_intensity;
|
||||
}
|
||||
|
||||
static struct backlight_ops kb3886bl_ops = {
|
||||
.get_brightness = kb3886bl_get_intensity,
|
||||
.update_status = kb3886bl_send_intensity,
|
||||
};
|
||||
|
||||
static int kb3886bl_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct kb3886bl_machinfo *machinfo = pdev->dev.platform_data;
|
||||
|
||||
bl_machinfo = machinfo;
|
||||
if (!machinfo->limit_mask)
|
||||
machinfo->limit_mask = -1;
|
||||
|
||||
kb3886_backlight_device = backlight_device_register("kb3886-bl",
|
||||
&pdev->dev, NULL, &kb3886bl_ops);
|
||||
if (IS_ERR(kb3886_backlight_device))
|
||||
return PTR_ERR(kb3886_backlight_device);
|
||||
|
||||
platform_set_drvdata(pdev, kb3886_backlight_device);
|
||||
|
||||
kb3886_backlight_device->props.max_brightness = machinfo->max_intensity;
|
||||
kb3886_backlight_device->props.power = FB_BLANK_UNBLANK;
|
||||
kb3886_backlight_device->props.brightness = machinfo->default_intensity;
|
||||
backlight_update_status(kb3886_backlight_device);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int kb3886bl_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_device *bd = platform_get_drvdata(pdev);
|
||||
|
||||
backlight_device_unregister(bd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver kb3886bl_driver = {
|
||||
.probe = kb3886bl_probe,
|
||||
.remove = kb3886bl_remove,
|
||||
.suspend = kb3886bl_suspend,
|
||||
.resume = kb3886bl_resume,
|
||||
.driver = {
|
||||
.name = "kb3886-bl",
|
||||
},
|
||||
};
|
||||
|
||||
static int __init kb3886_init(void)
|
||||
{
|
||||
if (!dmi_check_system(kb3886bl_device_table))
|
||||
return -ENODEV;
|
||||
|
||||
platform_add_devices(devices, ARRAY_SIZE(devices));
|
||||
return platform_driver_register(&kb3886bl_driver);
|
||||
}
|
||||
|
||||
static void __exit kb3886_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&kb3886bl_driver);
|
||||
}
|
||||
|
||||
module_init(kb3886_init);
|
||||
module_exit(kb3886_exit);
|
||||
|
||||
MODULE_AUTHOR("Claudio Nieder <private@claudio.ch>");
|
||||
MODULE_DESCRIPTION("Tabletkiosk Sahara Touch-iT Backlight Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("dmi:*:svnSDV:pniTouchT201:*");
|
||||
198
drivers/video/backlight/tosa_bl.c
Normal file
198
drivers/video/backlight/tosa_bl.c
Normal file
@ -0,0 +1,198 @@
|
||||
/*
|
||||
* LCD / Backlight control code for Sharp SL-6000x (tosa)
|
||||
*
|
||||
* Copyright (c) 2005 Dirk Opfer
|
||||
* Copyright (c) 2007,2008 Dmitry Baryshkov
|
||||
*
|
||||
* 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/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/backlight.h>
|
||||
|
||||
#include <asm/mach/sharpsl_param.h>
|
||||
|
||||
#include <mach/tosa.h>
|
||||
|
||||
#define COMADJ_DEFAULT 97
|
||||
|
||||
#define DAC_CH1 0
|
||||
#define DAC_CH2 1
|
||||
|
||||
struct tosa_bl_data {
|
||||
struct i2c_client *i2c;
|
||||
struct backlight_device *bl;
|
||||
|
||||
int comadj;
|
||||
};
|
||||
|
||||
static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
|
||||
{
|
||||
struct spi_device *spi = data->i2c->dev.platform_data;
|
||||
|
||||
i2c_smbus_write_byte_data(data->i2c, DAC_CH1, data->comadj);
|
||||
|
||||
/* SetBacklightDuty */
|
||||
i2c_smbus_write_byte_data(data->i2c, DAC_CH2, (u8)(brightness & 0xff));
|
||||
|
||||
/* SetBacklightVR */
|
||||
gpio_set_value(TOSA_GPIO_BL_C20MA, brightness & 0x100);
|
||||
|
||||
tosa_bl_enable(spi, brightness);
|
||||
}
|
||||
|
||||
static int tosa_bl_update_status(struct backlight_device *dev)
|
||||
{
|
||||
struct backlight_properties *props = &dev->props;
|
||||
struct tosa_bl_data *data = dev_get_drvdata(&dev->dev);
|
||||
int power = max(props->power, props->fb_blank);
|
||||
int brightness = props->brightness;
|
||||
|
||||
if (power)
|
||||
brightness = 0;
|
||||
|
||||
tosa_bl_set_backlight(data, brightness);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tosa_bl_get_brightness(struct backlight_device *dev)
|
||||
{
|
||||
struct backlight_properties *props = &dev->props;
|
||||
|
||||
return props->brightness;
|
||||
}
|
||||
|
||||
static struct backlight_ops bl_ops = {
|
||||
.get_brightness = tosa_bl_get_brightness,
|
||||
.update_status = tosa_bl_update_status,
|
||||
};
|
||||
|
||||
static int __devinit tosa_bl_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct tosa_bl_data *data = kzalloc(sizeof(struct tosa_bl_data), GFP_KERNEL);
|
||||
int ret = 0;
|
||||
if (!data)
|
||||
return -ENOMEM;
|
||||
|
||||
data->comadj = sharpsl_param.comadj == -1 ? COMADJ_DEFAULT : sharpsl_param.comadj;
|
||||
|
||||
ret = gpio_request(TOSA_GPIO_BL_C20MA, "backlight");
|
||||
if (ret) {
|
||||
dev_dbg(&data->bl->dev, "Unable to request gpio!\n");
|
||||
goto err_gpio_bl;
|
||||
}
|
||||
ret = gpio_direction_output(TOSA_GPIO_BL_C20MA, 0);
|
||||
if (ret)
|
||||
goto err_gpio_dir;
|
||||
|
||||
i2c_set_clientdata(client, data);
|
||||
data->i2c = client;
|
||||
|
||||
data->bl = backlight_device_register("tosa-bl", &client->dev,
|
||||
data, &bl_ops);
|
||||
if (IS_ERR(data->bl)) {
|
||||
ret = PTR_ERR(data->bl);
|
||||
goto err_reg;
|
||||
}
|
||||
|
||||
data->bl->props.brightness = 69;
|
||||
data->bl->props.max_brightness = 512 - 1;
|
||||
data->bl->props.power = FB_BLANK_UNBLANK;
|
||||
|
||||
backlight_update_status(data->bl);
|
||||
|
||||
return 0;
|
||||
|
||||
err_reg:
|
||||
data->bl = NULL;
|
||||
i2c_set_clientdata(client, NULL);
|
||||
err_gpio_dir:
|
||||
gpio_free(TOSA_GPIO_BL_C20MA);
|
||||
err_gpio_bl:
|
||||
kfree(data);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit tosa_bl_remove(struct i2c_client *client)
|
||||
{
|
||||
struct tosa_bl_data *data = i2c_get_clientdata(client);
|
||||
|
||||
backlight_device_unregister(data->bl);
|
||||
data->bl = NULL;
|
||||
i2c_set_clientdata(client, NULL);
|
||||
|
||||
gpio_free(TOSA_GPIO_BL_C20MA);
|
||||
|
||||
kfree(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int tosa_bl_suspend(struct i2c_client *client, pm_message_t pm)
|
||||
{
|
||||
struct tosa_bl_data *data = i2c_get_clientdata(client);
|
||||
|
||||
tosa_bl_set_backlight(data, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tosa_bl_resume(struct i2c_client *client)
|
||||
{
|
||||
struct tosa_bl_data *data = i2c_get_clientdata(client);
|
||||
|
||||
backlight_update_status(data->bl);
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define tosa_bl_suspend NULL
|
||||
#define tosa_bl_resume NULL
|
||||
#endif
|
||||
|
||||
static const struct i2c_device_id tosa_bl_id[] = {
|
||||
{ "tosa-bl", 0 },
|
||||
{ },
|
||||
};
|
||||
|
||||
|
||||
static struct i2c_driver tosa_bl_driver = {
|
||||
.driver = {
|
||||
.name = "tosa-bl",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = tosa_bl_probe,
|
||||
.remove = __devexit_p(tosa_bl_remove),
|
||||
.suspend = tosa_bl_suspend,
|
||||
.resume = tosa_bl_resume,
|
||||
.id_table = tosa_bl_id,
|
||||
};
|
||||
|
||||
static int __init tosa_bl_init(void)
|
||||
{
|
||||
return i2c_add_driver(&tosa_bl_driver);
|
||||
}
|
||||
|
||||
static void __exit tosa_bl_exit(void)
|
||||
{
|
||||
i2c_del_driver(&tosa_bl_driver);
|
||||
}
|
||||
|
||||
module_init(tosa_bl_init);
|
||||
module_exit(tosa_bl_exit);
|
||||
|
||||
MODULE_AUTHOR("Dmitry Baryshkov");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
|
||||
|
||||
280
drivers/video/backlight/tosa_lcd.c
Normal file
280
drivers/video/backlight/tosa_lcd.c
Normal file
@ -0,0 +1,280 @@
|
||||
/*
|
||||
* LCD / Backlight control code for Sharp SL-6000x (tosa)
|
||||
*
|
||||
* Copyright (c) 2005 Dirk Opfer
|
||||
* Copyright (c) 2007,2008 Dmitry Baryshkov
|
||||
*
|
||||
* 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/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/gpio.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/lcd.h>
|
||||
#include <linux/fb.h>
|
||||
|
||||
#include <asm/mach/sharpsl_param.h>
|
||||
|
||||
#include <mach/tosa.h>
|
||||
|
||||
#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL)
|
||||
|
||||
#define TG_REG0_VQV 0x0001
|
||||
#define TG_REG0_COLOR 0x0002
|
||||
#define TG_REG0_UD 0x0004
|
||||
#define TG_REG0_LR 0x0008
|
||||
|
||||
#define DAC_BASE 0x4e
|
||||
|
||||
struct tosa_lcd_data {
|
||||
struct spi_device *spi;
|
||||
struct lcd_device *lcd;
|
||||
struct i2c_client *i2c;
|
||||
|
||||
int lcd_power;
|
||||
};
|
||||
|
||||
static int tosa_tg_send(struct spi_device *spi, int adrs, uint8_t data)
|
||||
{
|
||||
u8 buf[1];
|
||||
struct spi_message msg;
|
||||
struct spi_transfer xfer = {
|
||||
.len = 1,
|
||||
.cs_change = 1,
|
||||
.tx_buf = buf,
|
||||
};
|
||||
|
||||
buf[0] = ((adrs & 0x07) << 5) | (data & 0x1f);
|
||||
spi_message_init(&msg);
|
||||
spi_message_add_tail(&xfer, &msg);
|
||||
|
||||
return spi_sync(spi, &msg);
|
||||
}
|
||||
|
||||
int tosa_bl_enable(struct spi_device *spi, int enable)
|
||||
{
|
||||
/* bl_enable GP04=1 otherwise GP04=0*/
|
||||
return tosa_tg_send(spi, TG_GPODR2, enable? 0x01 : 0x00);
|
||||
}
|
||||
EXPORT_SYMBOL(tosa_bl_enable);
|
||||
|
||||
static void tosa_lcd_tg_init(struct tosa_lcd_data *data)
|
||||
{
|
||||
/* TG on */
|
||||
gpio_set_value(TOSA_GPIO_TG_ON, 0);
|
||||
|
||||
mdelay(60);
|
||||
|
||||
/* delayed 0clk TCTL signal for VGA */
|
||||
tosa_tg_send(data->spi, TG_TPOSCTL, 0x00);
|
||||
/* GPOS0=powercontrol, GPOS1=GPIO, GPOS2=TCTL */
|
||||
tosa_tg_send(data->spi, TG_GPOSR, 0x02);
|
||||
}
|
||||
|
||||
static void tosa_lcd_tg_on(struct tosa_lcd_data *data)
|
||||
{
|
||||
struct spi_device *spi = data->spi;
|
||||
const int value = TG_REG0_COLOR | TG_REG0_UD | TG_REG0_LR;
|
||||
tosa_tg_send(spi, TG_PNLCTL, value | TG_REG0_VQV); /* this depends on mode */
|
||||
|
||||
/* TG LCD pannel power up */
|
||||
tosa_tg_send(spi, TG_PINICTL,0x4);
|
||||
mdelay(50);
|
||||
|
||||
/* TG LCD GVSS */
|
||||
tosa_tg_send(spi, TG_PINICTL,0x0);
|
||||
|
||||
if (!data->i2c) {
|
||||
/* after the pannel is powered up the first time, we can access the i2c bus */
|
||||
/* so probe for the DAC */
|
||||
struct i2c_adapter *adap = i2c_get_adapter(0);
|
||||
struct i2c_board_info info = {
|
||||
.type = "tosa-bl",
|
||||
.addr = DAC_BASE,
|
||||
.platform_data = data->spi,
|
||||
};
|
||||
data->i2c = i2c_new_device(adap, &info);
|
||||
}
|
||||
}
|
||||
|
||||
static void tosa_lcd_tg_off(struct tosa_lcd_data *data)
|
||||
{
|
||||
struct spi_device *spi = data->spi;
|
||||
|
||||
/* TG LCD VHSA off */
|
||||
tosa_tg_send(spi, TG_PINICTL,0x4);
|
||||
mdelay(50);
|
||||
|
||||
/* TG LCD signal off */
|
||||
tosa_tg_send(spi, TG_PINICTL,0x6);
|
||||
mdelay(50);
|
||||
|
||||
/* TG Off */
|
||||
gpio_set_value(TOSA_GPIO_TG_ON, 1);
|
||||
mdelay(100);
|
||||
}
|
||||
|
||||
int tosa_lcd_set_power(struct lcd_device *lcd, int power)
|
||||
{
|
||||
struct tosa_lcd_data *data = lcd_get_data(lcd);
|
||||
|
||||
if (POWER_IS_ON(power) && !POWER_IS_ON(data->lcd_power))
|
||||
tosa_lcd_tg_on(data);
|
||||
|
||||
if (!POWER_IS_ON(power) && POWER_IS_ON(data->lcd_power))
|
||||
tosa_lcd_tg_off(data);
|
||||
|
||||
data->lcd_power = power;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tosa_lcd_get_power(struct lcd_device *lcd)
|
||||
{
|
||||
struct tosa_lcd_data *data = lcd_get_data(lcd);
|
||||
|
||||
return data->lcd_power;
|
||||
}
|
||||
|
||||
static struct lcd_ops tosa_lcd_ops = {
|
||||
.set_power = tosa_lcd_set_power,
|
||||
.get_power = tosa_lcd_get_power,
|
||||
};
|
||||
|
||||
static int __devinit tosa_lcd_probe(struct spi_device *spi)
|
||||
{
|
||||
int ret;
|
||||
struct tosa_lcd_data *data;
|
||||
|
||||
data = kzalloc(sizeof(struct tosa_lcd_data), GFP_KERNEL);
|
||||
if (!data)
|
||||
return -ENOMEM;
|
||||
|
||||
/*
|
||||
* bits_per_word cannot be configured in platform data
|
||||
*/
|
||||
spi->bits_per_word = 8;
|
||||
|
||||
ret = spi_setup(spi);
|
||||
if (ret < 0)
|
||||
goto err_spi;
|
||||
|
||||
data->spi = spi;
|
||||
dev_set_drvdata(&spi->dev, data);
|
||||
|
||||
ret = gpio_request(TOSA_GPIO_TG_ON, "tg #pwr");
|
||||
if (ret < 0)
|
||||
goto err_gpio_tg;
|
||||
|
||||
mdelay(60);
|
||||
|
||||
ret = gpio_direction_output(TOSA_GPIO_TG_ON, 0);
|
||||
if (ret < 0)
|
||||
goto err_gpio_dir;
|
||||
|
||||
mdelay(60);
|
||||
tosa_lcd_tg_init(data);
|
||||
|
||||
tosa_lcd_tg_on(data);
|
||||
|
||||
data->lcd = lcd_device_register("tosa-lcd", &spi->dev, data,
|
||||
&tosa_lcd_ops);
|
||||
|
||||
if (IS_ERR(data->lcd)) {
|
||||
ret = PTR_ERR(data->lcd);
|
||||
data->lcd = NULL;
|
||||
goto err_register;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_register:
|
||||
tosa_lcd_tg_off(data);
|
||||
err_gpio_dir:
|
||||
gpio_free(TOSA_GPIO_TG_ON);
|
||||
err_gpio_tg:
|
||||
dev_set_drvdata(&spi->dev, NULL);
|
||||
err_spi:
|
||||
kfree(data);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit tosa_lcd_remove(struct spi_device *spi)
|
||||
{
|
||||
struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
|
||||
|
||||
lcd_device_unregister(data->lcd);
|
||||
|
||||
if (data->i2c)
|
||||
i2c_unregister_device(data->i2c);
|
||||
|
||||
tosa_lcd_tg_off(data);
|
||||
|
||||
gpio_free(TOSA_GPIO_TG_ON);
|
||||
dev_set_drvdata(&spi->dev, NULL);
|
||||
kfree(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int tosa_lcd_suspend(struct spi_device *spi, pm_message_t state)
|
||||
{
|
||||
struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
|
||||
|
||||
tosa_lcd_tg_off(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tosa_lcd_resume(struct spi_device *spi)
|
||||
{
|
||||
struct tosa_lcd_data *data = dev_get_drvdata(&spi->dev);
|
||||
|
||||
tosa_lcd_tg_init(data);
|
||||
if (POWER_IS_ON(data->lcd_power))
|
||||
tosa_lcd_tg_on(data);
|
||||
else
|
||||
tosa_lcd_tg_off(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define tosa_lcd_suspend NULL
|
||||
#define tosa_lcd_reume NULL
|
||||
#endif
|
||||
|
||||
static struct spi_driver tosa_lcd_driver = {
|
||||
.driver = {
|
||||
.name = "tosa-lcd",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = tosa_lcd_probe,
|
||||
.remove = __devexit_p(tosa_lcd_remove),
|
||||
.suspend = tosa_lcd_suspend,
|
||||
.resume = tosa_lcd_resume,
|
||||
};
|
||||
|
||||
static int __init tosa_lcd_init(void)
|
||||
{
|
||||
return spi_register_driver(&tosa_lcd_driver);
|
||||
}
|
||||
|
||||
static void __exit tosa_lcd_exit(void)
|
||||
{
|
||||
spi_unregister_driver(&tosa_lcd_driver);
|
||||
}
|
||||
|
||||
module_init(tosa_lcd_init);
|
||||
module_exit(tosa_lcd_exit);
|
||||
|
||||
MODULE_AUTHOR("Dmitry Baryshkov");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user