leds: Remove asic3 driver

Since ASIC3 MFD driver is removed, the LED support is also
obsolete.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230105134622.254560-25-arnd@kernel.org

drivers/leds/Kconfig

@@ -631,17 +631,6 @@ config LEDS_NETXBIG
 	  and 5Big Network v2 boards. The LEDs are wired to a CPLD and are
 	  controlled through a GPIO extension bus.
 
-config LEDS_ASIC3
-	bool "LED support for the HTC ASIC3"
-	depends on LEDS_CLASS=y
-	depends on MFD_ASIC3
-	default y
-	help
-	  This option enables support for the LEDs on the HTC ASIC3. The HTC
-	  ASIC3 LED GPIOs are inputs, not outputs, thus the leds-gpio driver
-	  cannot be used. This driver supports hardware blinking with an on+off
-	  period from 62ms to 125s. Say Y to enable LEDs on the HP iPAQ hx4700.
-
 config LEDS_TCA6507
 	tristate "LED Support for TCA6507 I2C chip"
 	depends on LEDS_CLASS && I2C

drivers/leds/Makefile

@@ -14,7 +14,6 @@ obj-$(CONFIG_LEDS_ADP5520)		+= leds-adp5520.o
 obj-$(CONFIG_LEDS_AN30259A)		+= leds-an30259a.o
 obj-$(CONFIG_LEDS_APU)			+= leds-apu.o
 obj-$(CONFIG_LEDS_ARIEL)		+= leds-ariel.o
-obj-$(CONFIG_LEDS_ASIC3)		+= leds-asic3.o
 obj-$(CONFIG_LEDS_AW2013)		+= leds-aw2013.o
 obj-$(CONFIG_LEDS_BCM6328)		+= leds-bcm6328.o
 obj-$(CONFIG_LEDS_BCM6358)		+= leds-bcm6358.o

drivers/leds/leds-asic3.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  Copyright (C) 2011 Paul Parsons <lost.distance@yahoo.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/leds.h>
-#include <linux/slab.h>
-
-#include <linux/mfd/asic3.h>
-#include <linux/mfd/core.h>
-#include <linux/module.h>
-
-/*
- *	The HTC ASIC3 LED GPIOs are inputs, not outputs.
- *	Hence we turn the LEDs on/off via the TimeBase register.
- */
-
-/*
- *	When TimeBase is 4 the clock resolution is about 32Hz.
- *	This driver supports hardware blinking with an on+off
- *	period from 62ms (2 clocks) to 125s (4000 clocks).
- */
-#define MS_TO_CLK(ms)	DIV_ROUND_CLOSEST(((ms)*1024), 32000)
-#define CLK_TO_MS(clk)	(((clk)*32000)/1024)
-#define MAX_CLK		4000            /* Fits into 12-bit Time registers */
-#define MAX_MS		CLK_TO_MS(MAX_CLK)
-
-static const unsigned int led_n_base[ASIC3_NUM_LEDS] = {
-	[0] = ASIC3_LED_0_Base,
-	[1] = ASIC3_LED_1_Base,
-	[2] = ASIC3_LED_2_Base,
-};
-
-static void brightness_set(struct led_classdev *cdev,
-	enum led_brightness value)
-{
-	struct platform_device *pdev = to_platform_device(cdev->dev->parent);
-	const struct mfd_cell *cell = mfd_get_cell(pdev);
-	struct asic3 *asic = dev_get_drvdata(pdev->dev.parent);
-	u32 timebase;
-	unsigned int base;
-
-	timebase = (value == LED_OFF) ? 0 : (LED_EN|0x4);
-
-	base = led_n_base[cell->id];
-	asic3_write_register(asic, (base + ASIC3_LED_PeriodTime), 32);
-	asic3_write_register(asic, (base + ASIC3_LED_DutyTime), 32);
-	asic3_write_register(asic, (base + ASIC3_LED_AutoStopCount), 0);
-	asic3_write_register(asic, (base + ASIC3_LED_TimeBase), timebase);
-}
-
-static int blink_set(struct led_classdev *cdev,
-	unsigned long *delay_on,
-	unsigned long *delay_off)
-{
-	struct platform_device *pdev = to_platform_device(cdev->dev->parent);
-	const struct mfd_cell *cell = mfd_get_cell(pdev);
-	struct asic3 *asic = dev_get_drvdata(pdev->dev.parent);
-	u32 on;
-	u32 off;
-	unsigned int base;
-
-	if (*delay_on > MAX_MS || *delay_off > MAX_MS)
-		return -EINVAL;
-
-	if (*delay_on == 0 && *delay_off == 0) {
-		/* If both are zero then a sensible default should be chosen */
-		on = MS_TO_CLK(500);
-		off = MS_TO_CLK(500);
-	} else {
-		on = MS_TO_CLK(*delay_on);
-		off = MS_TO_CLK(*delay_off);
-		if ((on + off) > MAX_CLK)
-			return -EINVAL;
-	}
-
-	base = led_n_base[cell->id];
-	asic3_write_register(asic, (base + ASIC3_LED_PeriodTime), (on + off));
-	asic3_write_register(asic, (base + ASIC3_LED_DutyTime), on);
-	asic3_write_register(asic, (base + ASIC3_LED_AutoStopCount), 0);
-	asic3_write_register(asic, (base + ASIC3_LED_TimeBase), (LED_EN|0x4));
-
-	*delay_on = CLK_TO_MS(on);
-	*delay_off = CLK_TO_MS(off);
-
-	return 0;
-}
-
-static int asic3_led_probe(struct platform_device *pdev)
-{
-	struct asic3_led *led = dev_get_platdata(&pdev->dev);
-	int ret;
-
-	ret = mfd_cell_enable(pdev);
-	if (ret < 0)
-		return ret;
-
-	led->cdev = devm_kzalloc(&pdev->dev, sizeof(struct led_classdev),
-				GFP_KERNEL);
-	if (!led->cdev) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	led->cdev->name = led->name;
-	led->cdev->flags = LED_CORE_SUSPENDRESUME;
-	led->cdev->brightness_set = brightness_set;
-	led->cdev->blink_set = blink_set;
-	led->cdev->default_trigger = led->default_trigger;
-
-	ret = led_classdev_register(&pdev->dev, led->cdev);
-	if (ret < 0)
-		goto out;
-
-	return 0;
-
-out:
-	(void) mfd_cell_disable(pdev);
-	return ret;
-}
-
-static int asic3_led_remove(struct platform_device *pdev)
-{
-	struct asic3_led *led = dev_get_platdata(&pdev->dev);
-
-	led_classdev_unregister(led->cdev);
-
-	return mfd_cell_disable(pdev);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int asic3_led_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	const struct mfd_cell *cell = mfd_get_cell(pdev);
-	int ret;
-
-	ret = 0;
-	if (cell->suspend)
-		ret = (*cell->suspend)(pdev);
-
-	return ret;
-}
-
-static int asic3_led_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	const struct mfd_cell *cell = mfd_get_cell(pdev);
-	int ret;
-
-	ret = 0;
-	if (cell->resume)
-		ret = (*cell->resume)(pdev);
-
-	return ret;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(asic3_led_pm_ops, asic3_led_suspend, asic3_led_resume);
-
-static struct platform_driver asic3_led_driver = {
-	.probe		= asic3_led_probe,
-	.remove		= asic3_led_remove,
-	.driver		= {
-		.name	= "leds-asic3",
-		.pm	= &asic3_led_pm_ops,
-	},
-};
-
-module_platform_driver(asic3_led_driver);
-
-MODULE_AUTHOR("Paul Parsons <lost.distance@yahoo.com>");
-MODULE_DESCRIPTION("HTC ASIC3 LED driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:leds-asic3");