Commit 157576d5 authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Greg Kroah-Hartman
Browse files

misc: remove atmel_tclib 



There is no driver depending on atmel_tclib anymore. Remove this driver.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201228204413.2677762-1-alexandre.belloni@bootlin.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 22a9e57f

drivers/misc/Kconfig

+0 −8
Original line number Diff line number Diff line
@@ -50,14 +50,6 @@ config AD525X_DPOT_SPI 
	  To compile this driver as a module, choose M here: the

	  module will be called ad525x_dpot-spi.



config ATMEL_TCLIB

	bool "Atmel AT32/AT91 Timer/Counter Library"

	depends on ARCH_AT91

	help

	  Select this if you want a library to allocate the Timer/Counter

	  blocks found on many Atmel processors.  This facilitates using

	  these blocks by different drivers despite processor differences.



config DUMMY_IRQ

	tristate "Dummy IRQ handler"

	help

drivers/misc/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -10,7 +10,6 @@ obj-$(CONFIG_AD525X_DPOT_I2C) += ad525x_dpot-i2c.o 
obj-$(CONFIG_AD525X_DPOT_SPI)	+= ad525x_dpot-spi.o

obj-$(CONFIG_INTEL_MID_PTI)	+= pti.o

obj-$(CONFIG_ATMEL_SSC)		+= atmel-ssc.o

obj-$(CONFIG_ATMEL_TCLIB)	+= atmel_tclib.o

obj-$(CONFIG_DUMMY_IRQ)		+= dummy-irq.o

obj-$(CONFIG_ICS932S401)	+= ics932s401.o

obj-$(CONFIG_LKDTM)		+= lkdtm/

drivers/misc/atmel_tclib.c

deleted100644 → 0
+0 −200
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

#include <linux/clk.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/ioport.h>

#include <linux/kernel.h>

#include <linux/platform_device.h>

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/export.h>

#include <linux/of.h>

#include <soc/at91/atmel_tcb.h>



/*

 * This is a thin library to solve the problem of how to portably allocate

 * one of the TC blocks.  For simplicity, it doesn't currently expect to

 * share individual timers between different drivers.

 */



#if defined(CONFIG_AVR32)

/* AVR32 has these divide PBB */

const u8 atmel_tc_divisors[5] = { 0, 4, 8, 16, 32, };

EXPORT_SYMBOL(atmel_tc_divisors);



#elif defined(CONFIG_ARCH_AT91)

/* AT91 has these divide MCK */

const u8 atmel_tc_divisors[5] = { 2, 8, 32, 128, 0, };

EXPORT_SYMBOL(atmel_tc_divisors);



#endif



static DEFINE_SPINLOCK(tc_list_lock);

static LIST_HEAD(tc_list);



/**

 * atmel_tc_alloc - allocate a specified TC block

 * @block: which block to allocate

 *

 * Caller allocates a block.  If it is available, a pointer to a

 * pre-initialized struct atmel_tc is returned. The caller can access

 * the registers directly through the "regs" field.

 */

struct atmel_tc *atmel_tc_alloc(unsigned block)

{

	struct atmel_tc		*tc;

	struct platform_device	*pdev = NULL;



	spin_lock(&tc_list_lock);

	list_for_each_entry(tc, &tc_list, node) {

		if (tc->allocated)

			continue;



		if ((tc->pdev->dev.of_node && tc->id == block) ||

		    (tc->pdev->id == block)) {

			pdev = tc->pdev;

			tc->allocated = true;

			break;

		}

	}

	spin_unlock(&tc_list_lock);



	return pdev ? tc : NULL;

}

EXPORT_SYMBOL_GPL(atmel_tc_alloc);



/**

 * atmel_tc_free - release a specified TC block

 * @tc: Timer/counter block that was returned by atmel_tc_alloc()

 *

 * This reverses the effect of atmel_tc_alloc(), invalidating the resource

 * returned by that routine and making the TC available to other drivers.

 */

void atmel_tc_free(struct atmel_tc *tc)

{

	spin_lock(&tc_list_lock);

	if (tc->allocated)

		tc->allocated = false;

	spin_unlock(&tc_list_lock);

}

EXPORT_SYMBOL_GPL(atmel_tc_free);



#if defined(CONFIG_OF)

static struct atmel_tcb_config tcb_rm9200_config = {

	.counter_width = 16,

};



static struct atmel_tcb_config tcb_sam9x5_config = {

	.counter_width = 32,

};



static const struct of_device_id atmel_tcb_dt_ids[] = {

	{

		.compatible = "atmel,at91rm9200-tcb",

		.data = &tcb_rm9200_config,

	}, {

		.compatible = "atmel,at91sam9x5-tcb",

		.data = &tcb_sam9x5_config,

	}, {

		/* sentinel */

	}

};



MODULE_DEVICE_TABLE(of, atmel_tcb_dt_ids);

#endif



static int __init tc_probe(struct platform_device *pdev)

{

	struct atmel_tc *tc;

	struct clk	*clk;

	int		irq;

	unsigned int	i;



	if (of_get_child_count(pdev->dev.of_node))

		return -EBUSY;



	irq = platform_get_irq(pdev, 0);

	if (irq < 0)

		return -EINVAL;



	tc = devm_kzalloc(&pdev->dev, sizeof(struct atmel_tc), GFP_KERNEL);

	if (!tc)

		return -ENOMEM;



	tc->pdev = pdev;



	clk = devm_clk_get(&pdev->dev, "t0_clk");

	if (IS_ERR(clk))

		return PTR_ERR(clk);



	tc->slow_clk = devm_clk_get(&pdev->dev, "slow_clk");

	if (IS_ERR(tc->slow_clk))

		return PTR_ERR(tc->slow_clk);



	tc->regs = devm_platform_ioremap_resource(pdev, 0);

	if (IS_ERR(tc->regs))

		return PTR_ERR(tc->regs);



	/* Now take SoC information if available */

	if (pdev->dev.of_node) {

		const struct of_device_id *match;

		match = of_match_node(atmel_tcb_dt_ids, pdev->dev.of_node);

		if (match)

			tc->tcb_config = match->data;



		tc->id = of_alias_get_id(tc->pdev->dev.of_node, "tcb");

	} else {

		tc->id = pdev->id;

	}



	tc->clk[0] = clk;

	tc->clk[1] = devm_clk_get(&pdev->dev, "t1_clk");

	if (IS_ERR(tc->clk[1]))

		tc->clk[1] = clk;

	tc->clk[2] = devm_clk_get(&pdev->dev, "t2_clk");

	if (IS_ERR(tc->clk[2]))

		tc->clk[2] = clk;



	tc->irq[0] = irq;

	tc->irq[1] = platform_get_irq(pdev, 1);

	if (tc->irq[1] < 0)

		tc->irq[1] = irq;

	tc->irq[2] = platform_get_irq(pdev, 2);

	if (tc->irq[2] < 0)

		tc->irq[2] = irq;



	for (i = 0; i < 3; i++)

		writel(ATMEL_TC_ALL_IRQ, tc->regs + ATMEL_TC_REG(i, IDR));



	spin_lock(&tc_list_lock);

	list_add_tail(&tc->node, &tc_list);

	spin_unlock(&tc_list_lock);



	platform_set_drvdata(pdev, tc);



	return 0;

}



static void tc_shutdown(struct platform_device *pdev)

{

	int i;

	struct atmel_tc *tc = platform_get_drvdata(pdev);



	for (i = 0; i < 3; i++)

		writel(ATMEL_TC_ALL_IRQ, tc->regs + ATMEL_TC_REG(i, IDR));

}



static struct platform_driver tc_driver = {

	.driver = {

		.name	= "atmel_tcb",

		.of_match_table	= of_match_ptr(atmel_tcb_dt_ids),

	},

	.shutdown = tc_shutdown,

};



static int __init tc_init(void)

{

	return platform_driver_probe(&tc_driver, tc_probe);

}

arch_initcall(tc_init);