[10/11] mfd: Drop obsolete JZ4740 driver
diff mbox series

Message ID 20190725220215.460-11-paul@crapouillou.net
State Not Applicable
Headers show
Series
  • JZ4740 SoC cleanup
Related show

Commit Message

Paul Cercueil July 25, 2019, 10:02 p.m. UTC
It has been replaced with the ingenic-iio driver for the ADC.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
---
 drivers/mfd/Kconfig      |   9 --
 drivers/mfd/Makefile     |   1 -
 drivers/mfd/jz4740-adc.c | 324 ---------------------------------------
 3 files changed, 334 deletions(-)
 delete mode 100644 drivers/mfd/jz4740-adc.c

Comments

Lee Jones Aug. 12, 2019, 8:16 a.m. UTC | #1
On Thu, 25 Jul 2019, Paul Cercueil wrote:

> It has been replaced with the ingenic-iio driver for the ADC.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Tested-by: Artur Rojek <contact@artur-rojek.eu>
> ---
>  drivers/mfd/Kconfig      |   9 --
>  drivers/mfd/Makefile     |   1 -
>  drivers/mfd/jz4740-adc.c | 324 ---------------------------------------
>  3 files changed, 334 deletions(-)
>  delete mode 100644 drivers/mfd/jz4740-adc.c

Applied, thanks.
Philippe Mathieu-Daudé Aug. 13, 2019, 8:44 a.m. UTC | #2
Hi Lee,

On 8/12/19 10:16 AM, Lee Jones wrote:
> On Thu, 25 Jul 2019, Paul Cercueil wrote:
> 
>> It has been replaced with the ingenic-iio driver for the ADC.
>>
>> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
>> Tested-by: Artur Rojek <contact@artur-rojek.eu>
>> ---
>>  drivers/mfd/Kconfig      |   9 --
>>  drivers/mfd/Makefile     |   1 -
>>  drivers/mfd/jz4740-adc.c | 324 ---------------------------------------
>>  3 files changed, 334 deletions(-)
>>  delete mode 100644 drivers/mfd/jz4740-adc.c
> 
> Applied, thanks.

It seems the replacement is done in "MIPS: qi_lb60: Migrate to
devicetree" which is not yet merged.

Probably easier if this patch goes thru the MIPS tree as part of the
"JZ4740 SoC cleanup" series.

Regards,

Phil.
Paul Cercueil Aug. 13, 2019, 10:01 a.m. UTC | #3
Hi Philippe,


Le mar. 13 août 2019 à 10:44, Philippe 
=?iso-8859-1?q?Mathieu-Daud=E9?= <f4bug@amsat.org> a écrit :
> Hi Lee,
> 
> On 8/12/19 10:16 AM, Lee Jones wrote:
>>  On Thu, 25 Jul 2019, Paul Cercueil wrote:
>> 
>>>  It has been replaced with the ingenic-iio driver for the ADC.
>>> 
>>>  Signed-off-by: Paul Cercueil <paul@crapouillou.net>
>>>  Tested-by: Artur Rojek <contact@artur-rojek.eu>
>>>  ---
>>>   drivers/mfd/Kconfig      |   9 --
>>>   drivers/mfd/Makefile     |   1 -
>>>   drivers/mfd/jz4740-adc.c | 324 
>>> ---------------------------------------
>>>   3 files changed, 334 deletions(-)
>>>   delete mode 100644 drivers/mfd/jz4740-adc.c
>> 
>>  Applied, thanks.
> 
> It seems the replacement is done in "MIPS: qi_lb60: Migrate to
> devicetree" which is not yet merged.

It's merged in the MIPS tree, though, so it'll blend together just
fine in linux-next.

> 
> Probably easier if this patch goes thru the MIPS tree as part of the
> "JZ4740 SoC cleanup" series.
> 
> Regards,
> 
> Phil.
Lee Jones Aug. 13, 2019, 10:30 a.m. UTC | #4
On Tue, 13 Aug 2019, Paul Cercueil wrote:

> Hi Philippe,
> 
> 
> Le mar. 13 août 2019 à 10:44, Philippe =?iso-8859-1?q?Mathieu-Daud=E9?=
> <f4bug@amsat.org> a écrit :
> > Hi Lee,
> > 
> > On 8/12/19 10:16 AM, Lee Jones wrote:
> > >  On Thu, 25 Jul 2019, Paul Cercueil wrote:
> > > 
> > > >  It has been replaced with the ingenic-iio driver for the ADC.
> > > > 
> > > >  Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> > > >  Tested-by: Artur Rojek <contact@artur-rojek.eu>
> > > >  ---
> > > >   drivers/mfd/Kconfig      |   9 --
> > > >   drivers/mfd/Makefile     |   1 -
> > > >   drivers/mfd/jz4740-adc.c | 324
> > > > ---------------------------------------
> > > >   3 files changed, 334 deletions(-)
> > > >   delete mode 100644 drivers/mfd/jz4740-adc.c
> > > 
> > >  Applied, thanks.
> > 
> > It seems the replacement is done in "MIPS: qi_lb60: Migrate to
> > devicetree" which is not yet merged.
> 
> It's merged in the MIPS tree, though, so it'll blend together just
> fine in linux-next.

Wonderful.  Thanks Paul.

Patch
diff mbox series

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index f129f9678940..4a07afe50b35 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -649,15 +649,6 @@  config MFD_JANZ_CMODIO
 	  host many different types of MODULbus daughterboards, including
 	  CAN and GPIO controllers.
 
-config MFD_JZ4740_ADC
-	bool "Janz JZ4740 ADC core"
-	select MFD_CORE
-	select GENERIC_IRQ_CHIP
-	depends on MACH_JZ4740
-	help
-	  Say yes here if you want support for the ADC unit in the JZ4740 SoC.
-	  This driver is necessary for jz4740-battery and jz4740-hwmon driver.
-
 config MFD_KEMPLD
 	tristate "Kontron module PLD device"
 	select MFD_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f026ada68f6a..446d5df7cacb 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -191,7 +191,6 @@  obj-$(CONFIG_LPC_SCH)		+= lpc_sch.o
 obj-$(CONFIG_LPC_ICH)		+= lpc_ich.o
 obj-$(CONFIG_MFD_RDC321X)	+= rdc321x-southbridge.o
 obj-$(CONFIG_MFD_JANZ_CMODIO)	+= janz-cmodio.o
-obj-$(CONFIG_MFD_JZ4740_ADC)	+= jz4740-adc.o
 obj-$(CONFIG_MFD_TPS6586X)	+= tps6586x.o
 obj-$(CONFIG_MFD_VX855)		+= vx855.o
 obj-$(CONFIG_MFD_WL1273_CORE)	+= wl1273-core.o
diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
deleted file mode 100644
index 082f16917519..000000000000
--- a/drivers/mfd/jz4740-adc.c
+++ /dev/null
@@ -1,324 +0,0 @@ 
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
- * JZ4740 SoC ADC driver
- *
- * This driver synchronizes access to the JZ4740 ADC core between the
- * JZ4740 battery and hwmon drivers.
- */
-
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-
-#include <linux/clk.h>
-#include <linux/mfd/core.h>
-
-#include <linux/jz4740-adc.h>
-
-
-#define JZ_REG_ADC_ENABLE	0x00
-#define JZ_REG_ADC_CFG		0x04
-#define JZ_REG_ADC_CTRL		0x08
-#define JZ_REG_ADC_STATUS	0x0c
-
-#define JZ_REG_ADC_TOUCHSCREEN_BASE	0x10
-#define JZ_REG_ADC_BATTERY_BASE	0x1c
-#define JZ_REG_ADC_HWMON_BASE	0x20
-
-#define JZ_ADC_ENABLE_TOUCH	BIT(2)
-#define JZ_ADC_ENABLE_BATTERY	BIT(1)
-#define JZ_ADC_ENABLE_ADCIN	BIT(0)
-
-enum {
-	JZ_ADC_IRQ_ADCIN = 0,
-	JZ_ADC_IRQ_BATTERY,
-	JZ_ADC_IRQ_TOUCH,
-	JZ_ADC_IRQ_PENUP,
-	JZ_ADC_IRQ_PENDOWN,
-};
-
-struct jz4740_adc {
-	struct resource *mem;
-	void __iomem *base;
-
-	int irq;
-	struct irq_chip_generic *gc;
-
-	struct clk *clk;
-	atomic_t clk_ref;
-
-	spinlock_t lock;
-};
-
-static void jz4740_adc_irq_demux(struct irq_desc *desc)
-{
-	struct irq_chip_generic *gc = irq_desc_get_handler_data(desc);
-	uint8_t status;
-	unsigned int i;
-
-	status = readb(gc->reg_base + JZ_REG_ADC_STATUS);
-
-	for (i = 0; i < 5; ++i) {
-		if (status & BIT(i))
-			generic_handle_irq(gc->irq_base + i);
-	}
-}
-
-
-/* Refcounting for the ADC clock is done in here instead of in the clock
- * framework, because it is the only clock which is shared between multiple
- * devices and thus is the only clock which needs refcounting */
-static inline void jz4740_adc_clk_enable(struct jz4740_adc *adc)
-{
-	if (atomic_inc_return(&adc->clk_ref) == 1)
-		clk_prepare_enable(adc->clk);
-}
-
-static inline void jz4740_adc_clk_disable(struct jz4740_adc *adc)
-{
-	if (atomic_dec_return(&adc->clk_ref) == 0)
-		clk_disable_unprepare(adc->clk);
-}
-
-static inline void jz4740_adc_set_enabled(struct jz4740_adc *adc, int engine,
-	bool enabled)
-{
-	unsigned long flags;
-	uint8_t val;
-
-	spin_lock_irqsave(&adc->lock, flags);
-
-	val = readb(adc->base + JZ_REG_ADC_ENABLE);
-	if (enabled)
-		val |= BIT(engine);
-	else
-		val &= ~BIT(engine);
-	writeb(val, adc->base + JZ_REG_ADC_ENABLE);
-
-	spin_unlock_irqrestore(&adc->lock, flags);
-}
-
-static int jz4740_adc_cell_enable(struct platform_device *pdev)
-{
-	struct jz4740_adc *adc = dev_get_drvdata(pdev->dev.parent);
-
-	jz4740_adc_clk_enable(adc);
-	jz4740_adc_set_enabled(adc, pdev->id, true);
-
-	return 0;
-}
-
-static int jz4740_adc_cell_disable(struct platform_device *pdev)
-{
-	struct jz4740_adc *adc = dev_get_drvdata(pdev->dev.parent);
-
-	jz4740_adc_set_enabled(adc, pdev->id, false);
-	jz4740_adc_clk_disable(adc);
-
-	return 0;
-}
-
-int jz4740_adc_set_config(struct device *dev, uint32_t mask, uint32_t val)
-{
-	struct jz4740_adc *adc = dev_get_drvdata(dev);
-	unsigned long flags;
-	uint32_t cfg;
-
-	if (!adc)
-		return -ENODEV;
-
-	spin_lock_irqsave(&adc->lock, flags);
-
-	cfg = readl(adc->base + JZ_REG_ADC_CFG);
-
-	cfg &= ~mask;
-	cfg |= val;
-
-	writel(cfg, adc->base + JZ_REG_ADC_CFG);
-
-	spin_unlock_irqrestore(&adc->lock, flags);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(jz4740_adc_set_config);
-
-static struct resource jz4740_hwmon_resources[] = {
-	{
-		.start = JZ_ADC_IRQ_ADCIN,
-		.flags = IORESOURCE_IRQ,
-	},
-	{
-		.start	= JZ_REG_ADC_HWMON_BASE,
-		.end	= JZ_REG_ADC_HWMON_BASE + 3,
-		.flags	= IORESOURCE_MEM,
-	},
-};
-
-static struct resource jz4740_battery_resources[] = {
-	{
-		.start = JZ_ADC_IRQ_BATTERY,
-		.flags = IORESOURCE_IRQ,
-	},
-	{
-		.start	= JZ_REG_ADC_BATTERY_BASE,
-		.end	= JZ_REG_ADC_BATTERY_BASE + 3,
-		.flags	= IORESOURCE_MEM,
-	},
-};
-
-static const struct mfd_cell jz4740_adc_cells[] = {
-	{
-		.id = 0,
-		.name = "jz4740-hwmon",
-		.num_resources = ARRAY_SIZE(jz4740_hwmon_resources),
-		.resources = jz4740_hwmon_resources,
-
-		.enable = jz4740_adc_cell_enable,
-		.disable = jz4740_adc_cell_disable,
-	},
-	{
-		.id = 1,
-		.name = "jz4740-battery",
-		.num_resources = ARRAY_SIZE(jz4740_battery_resources),
-		.resources = jz4740_battery_resources,
-
-		.enable = jz4740_adc_cell_enable,
-		.disable = jz4740_adc_cell_disable,
-	},
-};
-
-static int jz4740_adc_probe(struct platform_device *pdev)
-{
-	struct irq_chip_generic *gc;
-	struct irq_chip_type *ct;
-	struct jz4740_adc *adc;
-	struct resource *mem_base;
-	int ret;
-	int irq_base;
-
-	adc = devm_kzalloc(&pdev->dev, sizeof(*adc), GFP_KERNEL);
-	if (!adc)
-		return -ENOMEM;
-
-	adc->irq = platform_get_irq(pdev, 0);
-	if (adc->irq < 0) {
-		ret = adc->irq;
-		dev_err(&pdev->dev, "Failed to get platform irq: %d\n", ret);
-		return ret;
-	}
-
-	irq_base = platform_get_irq(pdev, 1);
-	if (irq_base < 0) {
-		dev_err(&pdev->dev, "Failed to get irq base: %d\n", irq_base);
-		return irq_base;
-	}
-
-	mem_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem_base) {
-		dev_err(&pdev->dev, "Failed to get platform mmio resource\n");
-		return -ENOENT;
-	}
-
-	/* Only request the shared registers for the MFD driver */
-	adc->mem = request_mem_region(mem_base->start, JZ_REG_ADC_STATUS,
-					pdev->name);
-	if (!adc->mem) {
-		dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-		return -EBUSY;
-	}
-
-	adc->base = ioremap_nocache(adc->mem->start, resource_size(adc->mem));
-	if (!adc->base) {
-		ret = -EBUSY;
-		dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-		goto err_release_mem_region;
-	}
-
-	adc->clk = clk_get(&pdev->dev, "adc");
-	if (IS_ERR(adc->clk)) {
-		ret = PTR_ERR(adc->clk);
-		dev_err(&pdev->dev, "Failed to get clock: %d\n", ret);
-		goto err_iounmap;
-	}
-
-	spin_lock_init(&adc->lock);
-	atomic_set(&adc->clk_ref, 0);
-
-	platform_set_drvdata(pdev, adc);
-
-	gc = irq_alloc_generic_chip("INTC", 1, irq_base, adc->base,
-		handle_level_irq);
-
-	ct = gc->chip_types;
-	ct->regs.mask = JZ_REG_ADC_CTRL;
-	ct->regs.ack = JZ_REG_ADC_STATUS;
-	ct->chip.irq_mask = irq_gc_mask_set_bit;
-	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
-	ct->chip.irq_ack = irq_gc_ack_set_bit;
-
-	irq_setup_generic_chip(gc, IRQ_MSK(5), IRQ_GC_INIT_MASK_CACHE, 0,
-				IRQ_NOPROBE | IRQ_LEVEL);
-
-	adc->gc = gc;
-
-	irq_set_chained_handler_and_data(adc->irq, jz4740_adc_irq_demux, gc);
-
-	writeb(0x00, adc->base + JZ_REG_ADC_ENABLE);
-	writeb(0xff, adc->base + JZ_REG_ADC_CTRL);
-
-	ret = mfd_add_devices(&pdev->dev, 0, jz4740_adc_cells,
-			      ARRAY_SIZE(jz4740_adc_cells), mem_base,
-			      irq_base, NULL);
-	if (ret < 0)
-		goto err_clk_put;
-
-	return 0;
-
-err_clk_put:
-	clk_put(adc->clk);
-err_iounmap:
-	iounmap(adc->base);
-err_release_mem_region:
-	release_mem_region(adc->mem->start, resource_size(adc->mem));
-	return ret;
-}
-
-static int jz4740_adc_remove(struct platform_device *pdev)
-{
-	struct jz4740_adc *adc = platform_get_drvdata(pdev);
-
-	mfd_remove_devices(&pdev->dev);
-
-	irq_remove_generic_chip(adc->gc, IRQ_MSK(5), IRQ_NOPROBE | IRQ_LEVEL, 0);
-	kfree(adc->gc);
-	irq_set_chained_handler_and_data(adc->irq, NULL, NULL);
-
-	iounmap(adc->base);
-	release_mem_region(adc->mem->start, resource_size(adc->mem));
-
-	clk_put(adc->clk);
-
-	return 0;
-}
-
-static struct platform_driver jz4740_adc_driver = {
-	.probe	= jz4740_adc_probe,
-	.remove = jz4740_adc_remove,
-	.driver = {
-		.name = "jz4740-adc",
-	},
-};
-
-module_platform_driver(jz4740_adc_driver);
-
-MODULE_DESCRIPTION("JZ4740 SoC ADC driver");
-MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:jz4740-adc");