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Message-Id: <20201228204413.2677762-1-alexandre.belloni@bootlin.com>
Date: Mon, 28 Dec 2020 21:44:13 +0100
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Ludovic Desroches <ludovic.desroches@...rochip.com>
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH] misc: remove atmel_tclib
There is no driver depending on atmel_tclib anymore. Remove this driver.
Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
drivers/misc/Kconfig | 8 --
drivers/misc/Makefile | 1 -
drivers/misc/atmel_tclib.c | 200 -------------------------------------
3 files changed, 209 deletions(-)
delete mode 100644 drivers/misc/atmel_tclib.c
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index fafa8b0d8099..e90c2524e46c 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -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
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index d23231e73330..f65e8b18ecd8 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -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/
diff --git a/drivers/misc/atmel_tclib.c b/drivers/misc/atmel_tclib.c
deleted file mode 100644
index 7de7840f613c..000000000000
--- a/drivers/misc/atmel_tclib.c
+++ /dev/null
@@ -1,200 +0,0 @@
-// 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);
--
2.29.2
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