Retire the platform specific pandora backlight driver since it can now be replaced by twl_pm and device tree.
Signed-off-by: H. Nikolaus Schaller <[email protected]> --- drivers/video/backlight/Kconfig | 7 -- drivers/video/backlight/Makefile | 1 - drivers/video/backlight/pandora_bl.c | 159 --------------------------- 3 files changed, 167 deletions(-) delete mode 100644 drivers/video/backlight/pandora_bl.c diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index 7aa1c4b21111f..a250b3edc152c 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -451,13 +451,6 @@ config BACKLIGHT_MP3309C To compile this driver as a module, choose M here: the module will be called mp3309c. -config BACKLIGHT_PANDORA - tristate "Backlight driver for Pandora console" - depends on TWL4030_CORE - help - If you have a Pandora console, say Y to enable the - backlight driver. - config BACKLIGHT_SKY81452 tristate "Backlight driver for SKY81452" depends on MFD_SKY81452 diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile index 21c8313cfb121..f97ab8ba85807 100644 --- a/drivers/video/backlight/Makefile +++ b/drivers/video/backlight/Makefile @@ -52,7 +52,6 @@ obj-$(CONFIG_BACKLIGHT_MAX8925) += max8925_bl.o obj-$(CONFIG_BACKLIGHT_MP3309C) += mp3309c.o obj-$(CONFIG_BACKLIGHT_MT6370) += mt6370-backlight.o obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o -obj-$(CONFIG_BACKLIGHT_PANDORA) += pandora_bl.o obj-$(CONFIG_BACKLIGHT_PWM) += pwm_bl.o obj-$(CONFIG_BACKLIGHT_QCOM_WLED) += qcom-wled.o obj-$(CONFIG_BACKLIGHT_RT4831) += rt4831-backlight.o diff --git a/drivers/video/backlight/pandora_bl.c b/drivers/video/backlight/pandora_bl.c deleted file mode 100644 index 8a63ded0fa90f..0000000000000 --- a/drivers/video/backlight/pandora_bl.c +++ /dev/null @@ -1,159 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Backlight driver for Pandora handheld. - * Pandora uses TWL4030 PWM0 -> TPS61161 combo for control backlight. - * Based on pwm_bl.c - * - * Copyright 2009,2012 Gražvydas Ignotas <[email protected]> - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/delay.h> -#include <linux/backlight.h> -#include <linux/mfd/twl.h> -#include <linux/err.h> - -#define TWL_PWM0_ON 0x00 -#define TWL_PWM0_OFF 0x01 - -#define TWL_INTBR_GPBR1 0x0c -#define TWL_INTBR_PMBR1 0x0d - -#define TWL_PMBR1_PWM0_MUXMASK 0x0c -#define TWL_PMBR1_PWM0 0x04 -#define PWM0_CLK_ENABLE BIT(0) -#define PWM0_ENABLE BIT(2) - -/* range accepted by hardware */ -#define MIN_VALUE 9 -#define MAX_VALUE 63 -#define MAX_USER_VALUE (MAX_VALUE - MIN_VALUE) - -struct pandora_private { - unsigned old_state; -#define PANDORABL_WAS_OFF 1 -}; - -static int pandora_backlight_update_status(struct backlight_device *bl) -{ - int brightness = bl->props.brightness; - struct pandora_private *priv = bl_get_data(bl); - u8 r; - - if (bl->props.power != BACKLIGHT_POWER_ON) - brightness = 0; - if (bl->props.state & BL_CORE_FBBLANK) - brightness = 0; - if (bl->props.state & BL_CORE_SUSPENDED) - brightness = 0; - - if ((unsigned int)brightness > MAX_USER_VALUE) - brightness = MAX_USER_VALUE; - - if (brightness == 0) { - if (priv->old_state == PANDORABL_WAS_OFF) - goto done; - - /* first disable PWM0 output, then clock */ - twl_i2c_read_u8(TWL4030_MODULE_INTBR, &r, TWL_INTBR_GPBR1); - r &= ~PWM0_ENABLE; - twl_i2c_write_u8(TWL4030_MODULE_INTBR, r, TWL_INTBR_GPBR1); - r &= ~PWM0_CLK_ENABLE; - twl_i2c_write_u8(TWL4030_MODULE_INTBR, r, TWL_INTBR_GPBR1); - - goto done; - } - - if (priv->old_state == PANDORABL_WAS_OFF) { - /* - * set PWM duty cycle to max. TPS61161 seems to use this - * to calibrate it's PWM sensitivity when it starts. - */ - twl_i2c_write_u8(TWL_MODULE_PWM, MAX_VALUE, TWL_PWM0_OFF); - - /* first enable clock, then PWM0 out */ - twl_i2c_read_u8(TWL4030_MODULE_INTBR, &r, TWL_INTBR_GPBR1); - r &= ~PWM0_ENABLE; - r |= PWM0_CLK_ENABLE; - twl_i2c_write_u8(TWL4030_MODULE_INTBR, r, TWL_INTBR_GPBR1); - r |= PWM0_ENABLE; - twl_i2c_write_u8(TWL4030_MODULE_INTBR, r, TWL_INTBR_GPBR1); - - /* - * TI made it very easy to enable digital control, so easy that - * it often triggers unintentionally and disabes PWM control, - * so wait until 1 wire mode detection window ends. - */ - usleep_range(2000, 10000); - } - - twl_i2c_write_u8(TWL_MODULE_PWM, MIN_VALUE + brightness, TWL_PWM0_OFF); - -done: - if (brightness != 0) - priv->old_state = 0; - else - priv->old_state = PANDORABL_WAS_OFF; - - return 0; -} - -static const struct backlight_ops pandora_backlight_ops = { - .options = BL_CORE_SUSPENDRESUME, - .update_status = pandora_backlight_update_status, -}; - -static int pandora_backlight_probe(struct platform_device *pdev) -{ - struct backlight_properties props; - struct backlight_device *bl; - struct pandora_private *priv; - u8 r; - - priv = devm_kmalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - memset(&props, 0, sizeof(props)); - props.max_brightness = MAX_USER_VALUE; - props.type = BACKLIGHT_RAW; - bl = devm_backlight_device_register(&pdev->dev, pdev->name, &pdev->dev, - priv, &pandora_backlight_ops, &props); - if (IS_ERR(bl)) { - dev_err(&pdev->dev, "failed to register backlight\n"); - return PTR_ERR(bl); - } - - platform_set_drvdata(pdev, bl); - - /* 64 cycle period, ON position 0 */ - twl_i2c_write_u8(TWL_MODULE_PWM, 0x80, TWL_PWM0_ON); - - priv->old_state = PANDORABL_WAS_OFF; - bl->props.brightness = MAX_USER_VALUE; - backlight_update_status(bl); - - /* enable PWM function in pin mux */ - twl_i2c_read_u8(TWL4030_MODULE_INTBR, &r, TWL_INTBR_PMBR1); - r &= ~TWL_PMBR1_PWM0_MUXMASK; - r |= TWL_PMBR1_PWM0; - twl_i2c_write_u8(TWL4030_MODULE_INTBR, r, TWL_INTBR_PMBR1); - - return 0; -} - -static struct platform_driver pandora_backlight_driver = { - .driver = { - .name = "pandora-backlight", - }, - .probe = pandora_backlight_probe, -}; - -module_platform_driver(pandora_backlight_driver); - -MODULE_AUTHOR("Gražvydas Ignotas <[email protected]>"); -MODULE_DESCRIPTION("Pandora Backlight Driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:pandora-backlight"); -- 2.50.1 (Apple Git-155)
