clk: remove s3c24xx driver

The s3c24xx platform is gone, so the clk driver can be removed as
well.
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

MAINTAINERS

@@ -18440,7 +18440,6 @@ F:	include/dt-bindings/clock/s3c*.h
 F:	include/dt-bindings/clock/s5p*.h
 F:	include/dt-bindings/clock/samsung,*.h
 F:	include/linux/clk/samsung.h
-F:	include/linux/platform_data/clk-s3c2410.h
 
 SAMSUNG SPI DRIVERS
 M:	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

drivers/clk/samsung/Kconfig

@@ -94,38 +94,6 @@ config EXYNOS_CLKOUT
 	  status of the certains clocks from SoC, but it could also be tied to
 	  other devices as an input clock.
 
-# For S3C24XX platforms, select following symbols:
-config S3C2410_COMMON_CLK
-	bool "Samsung S3C2410 clock controller support" if COMPILE_TEST
-	select COMMON_CLK_SAMSUNG
-	help
-	  Support for the clock controller present on the Samsung
-	  S3C2410/S3C2440/S3C2442 SoCs. Choose Y here only if you build for
-	  this SoC.
-
-config S3C2410_COMMON_DCLK
-	bool
-	select COMMON_CLK_SAMSUNG
-	select REGMAP_MMIO
-	help
-	  Support for the dclk clock controller present on the Samsung
-	  S3C2410/S3C2412/S3C2440/S3C2443 SoCs. Choose Y here only if you build
-	  for this SoC.
-
-config S3C2412_COMMON_CLK
-	bool "Samsung S3C2412 clock controller support" if COMPILE_TEST
-	select COMMON_CLK_SAMSUNG
-	help
-	  Support for the clock controller present on the Samsung S3C2412 SoCs.
-	  Choose Y here only if you build for this SoC.
-
-config S3C2443_COMMON_CLK
-	bool "Samsung S3C2443 clock controller support" if COMPILE_TEST
-	select COMMON_CLK_SAMSUNG
-	help
-	  Support for the clock controller present on the Samsung
-	  S3C2416/S3C2443 SoCs. Choose Y here only if you build for this SoC.
-
 config TESLA_FSD_COMMON_CLK
 	bool "Tesla FSD clock controller support" if COMPILE_TEST
 	depends on COMMON_CLK_SAMSUNG

drivers/clk/samsung/Makefile

@@ -21,10 +21,6 @@ obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)	+= clk-exynos7.o
 obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)	+= clk-exynos7885.o
 obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)	+= clk-exynos850.o
 obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)	+= clk-exynosautov9.o
-obj-$(CONFIG_S3C2410_COMMON_CLK)+= clk-s3c2410.o
-obj-$(CONFIG_S3C2410_COMMON_DCLK)+= clk-s3c2410-dclk.o
-obj-$(CONFIG_S3C2412_COMMON_CLK)+= clk-s3c2412.o
-obj-$(CONFIG_S3C2443_COMMON_CLK)+= clk-s3c2443.o
 obj-$(CONFIG_S3C64XX_COMMON_CLK)	+= clk-s3c64xx.o
 obj-$(CONFIG_S5PV210_COMMON_CLK)	+= clk-s5pv210.o clk-s5pv210-audss.o
 obj-$(CONFIG_TESLA_FSD_COMMON_CLK)	+= clk-fsd.o

drivers/clk/samsung/clk-s3c2412.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
- *
- * Common Clock Framework support for S3C2412 and S3C2413.
- */
-
-#include <linux/clk-provider.h>
-#include <linux/clk/samsung.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/reboot.h>
-
-#include <dt-bindings/clock/s3c2412.h>
-
-#include "clk.h"
-#include "clk-pll.h"
-
-#define LOCKTIME	0x00
-#define MPLLCON		0x04
-#define UPLLCON		0x08
-#define CLKCON		0x0c
-#define CLKDIVN		0x14
-#define CLKSRC		0x1c
-#define SWRST		0x30
-
-static void __iomem *reg_base;
-
-/*
- * list of controller registers to be saved and restored during a
- * suspend/resume cycle.
- */
-static unsigned long s3c2412_clk_regs[] __initdata = {
-	LOCKTIME,
-	MPLLCON,
-	UPLLCON,
-	CLKCON,
-	CLKDIVN,
-	CLKSRC,
-};
-
-static struct clk_div_table divxti_d[] = {
-	{ .val = 0, .div = 1 },
-	{ .val = 1, .div = 2 },
-	{ .val = 2, .div = 4 },
-	{ .val = 3, .div = 6 },
-	{ .val = 4, .div = 8 },
-	{ .val = 5, .div = 10 },
-	{ .val = 6, .div = 12 },
-	{ .val = 7, .div = 14 },
-	{ /* sentinel */ },
-};
-
-static struct samsung_div_clock s3c2412_dividers[] __initdata = {
-	DIV_T(0, "div_xti", "xti", CLKSRC, 0, 3, divxti_d),
-	DIV(0, "div_cam", "mux_cam", CLKDIVN, 16, 4),
-	DIV(0, "div_i2s", "mux_i2s", CLKDIVN, 12, 4),
-	DIV(0, "div_uart", "mux_uart", CLKDIVN, 8, 4),
-	DIV(0, "div_usb", "mux_usb", CLKDIVN, 6, 1),
-	DIV(0, "div_hclk_half", "hclk", CLKDIVN, 5, 1),
-	DIV(ARMDIV, "armdiv", "msysclk", CLKDIVN, 3, 1),
-	DIV(PCLK, "pclk", "hclk", CLKDIVN, 2, 1),
-	DIV(HCLK, "hclk", "armdiv", CLKDIVN, 0, 2),
-};
-
-static struct samsung_fixed_factor_clock s3c2412_ffactor[] __initdata = {
-	FFACTOR(0, "ff_hclk", "hclk", 2, 1, CLK_SET_RATE_PARENT),
-};
-
-/*
- * The first two use the OM[4] setting, which is not readable from
- * software, so assume it is set to xti.
- */
-PNAME(erefclk_p) = { "xti", "xti", "xti", "ext" };
-PNAME(urefclk_p) = { "xti", "xti", "xti", "ext" };
-
-PNAME(camclk_p) = { "usysclk", "hclk" };
-PNAME(usbclk_p) = { "usysclk", "hclk" };
-PNAME(i2sclk_p) = { "erefclk", "mpll" };
-PNAME(uartclk_p) = { "erefclk", "mpll" };
-PNAME(usysclk_p) = { "urefclk", "upll" };
-PNAME(msysclk_p) = { "mdivclk", "mpll" };
-PNAME(mdivclk_p) = { "xti", "div_xti" };
-PNAME(armclk_p) = { "armdiv", "hclk" };
-
-static struct samsung_mux_clock s3c2412_muxes[] __initdata = {
-	MUX(0, "erefclk", erefclk_p, CLKSRC, 14, 2),
-	MUX(0, "urefclk", urefclk_p, CLKSRC, 12, 2),
-	MUX(0, "mux_cam", camclk_p, CLKSRC, 11, 1),
-	MUX(0, "mux_usb", usbclk_p, CLKSRC, 10, 1),
-	MUX(0, "mux_i2s", i2sclk_p, CLKSRC, 9, 1),
-	MUX(0, "mux_uart", uartclk_p, CLKSRC, 8, 1),
-	MUX(USYSCLK, "usysclk", usysclk_p, CLKSRC, 5, 1),
-	MUX(MSYSCLK, "msysclk", msysclk_p, CLKSRC, 4, 1),
-	MUX(MDIVCLK, "mdivclk", mdivclk_p, CLKSRC, 3, 1),
-	MUX(ARMCLK, "armclk", armclk_p, CLKDIVN, 4, 1),
-};
-
-static struct samsung_pll_clock s3c2412_plls[] __initdata = {
-	PLL(pll_s3c2440_mpll, MPLL, "mpll", "xti", LOCKTIME, MPLLCON, NULL),
-	PLL(pll_s3c2410_upll, UPLL, "upll", "urefclk", LOCKTIME, UPLLCON, NULL),
-};
-
-static struct samsung_gate_clock s3c2412_gates[] __initdata = {
-	GATE(PCLK_WDT, "wdt", "pclk", CLKCON, 28, 0, 0),
-	GATE(PCLK_SPI, "spi", "pclk", CLKCON, 27, 0, 0),
-	GATE(PCLK_I2S, "i2s", "pclk", CLKCON, 26, 0, 0),
-	GATE(PCLK_I2C, "i2c", "pclk", CLKCON, 25, 0, 0),
-	GATE(PCLK_ADC, "adc", "pclk", CLKCON, 24, 0, 0),
-	GATE(PCLK_RTC, "rtc", "pclk", CLKCON, 23, 0, 0),
-	GATE(PCLK_GPIO, "gpio", "pclk", CLKCON, 22, CLK_IGNORE_UNUSED, 0),
-	GATE(PCLK_UART2, "uart2", "pclk", CLKCON, 21, 0, 0),
-	GATE(PCLK_UART1, "uart1", "pclk", CLKCON, 20, 0, 0),
-	GATE(PCLK_UART0, "uart0", "pclk", CLKCON, 19, 0, 0),
-	GATE(PCLK_SDI, "sdi", "pclk", CLKCON, 18, 0, 0),
-	GATE(PCLK_PWM, "pwm", "pclk", CLKCON, 17, 0, 0),
-	GATE(PCLK_USBD, "usb-device", "pclk", CLKCON, 16, 0, 0),
-	GATE(SCLK_CAM, "sclk_cam", "div_cam", CLKCON, 15, 0, 0),
-	GATE(SCLK_UART, "sclk_uart", "div_uart", CLKCON, 14, 0, 0),
-	GATE(SCLK_I2S, "sclk_i2s", "div_i2s", CLKCON, 13, 0, 0),
-	GATE(SCLK_USBH, "sclk_usbh", "div_usb", CLKCON, 12, 0, 0),
-	GATE(SCLK_USBD, "sclk_usbd", "div_usb", CLKCON, 11, 0, 0),
-	GATE(HCLK_HALF, "hclk_half", "div_hclk_half", CLKCON, 10, CLK_IGNORE_UNUSED, 0),
-	GATE(HCLK_X2, "hclkx2", "ff_hclk", CLKCON, 9, CLK_IGNORE_UNUSED, 0),
-	GATE(HCLK_SDRAM, "sdram", "hclk", CLKCON, 8, CLK_IGNORE_UNUSED, 0),
-	GATE(HCLK_USBH, "usb-host", "hclk", CLKCON, 6, 0, 0),
-	GATE(HCLK_LCD, "lcd", "hclk", CLKCON, 5, 0, 0),
-	GATE(HCLK_NAND, "nand", "hclk", CLKCON, 4, 0, 0),
-	GATE(HCLK_DMA3, "dma3", "hclk", CLKCON, 3, CLK_IGNORE_UNUSED, 0),
-	GATE(HCLK_DMA2, "dma2", "hclk", CLKCON, 2, CLK_IGNORE_UNUSED, 0),
-	GATE(HCLK_DMA1, "dma1", "hclk", CLKCON, 1, CLK_IGNORE_UNUSED, 0),
-	GATE(HCLK_DMA0, "dma0", "hclk", CLKCON, 0, CLK_IGNORE_UNUSED, 0),
-};
-
-static struct samsung_clock_alias s3c2412_aliases[] __initdata = {
-	ALIAS(PCLK_UART0, "s3c2412-uart.0", "uart"),
-	ALIAS(PCLK_UART1, "s3c2412-uart.1", "uart"),
-	ALIAS(PCLK_UART2, "s3c2412-uart.2", "uart"),
-	ALIAS(PCLK_UART0, "s3c2412-uart.0", "clk_uart_baud2"),
-	ALIAS(PCLK_UART1, "s3c2412-uart.1", "clk_uart_baud2"),
-	ALIAS(PCLK_UART2, "s3c2412-uart.2", "clk_uart_baud2"),
-	ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
-	ALIAS(PCLK_I2C, "s3c2410-i2c.0", "i2c"),
-	ALIAS(PCLK_ADC, NULL, "adc"),
-	ALIAS(PCLK_RTC, NULL, "rtc"),
-	ALIAS(PCLK_PWM, NULL, "timers"),
-	ALIAS(HCLK_LCD, NULL, "lcd"),
-	ALIAS(PCLK_USBD, NULL, "usb-device"),
-	ALIAS(SCLK_USBD, NULL, "usb-bus-gadget"),
-	ALIAS(HCLK_USBH, NULL, "usb-host"),
-	ALIAS(SCLK_USBH, NULL, "usb-bus-host"),
-	ALIAS(ARMCLK, NULL, "armclk"),
-	ALIAS(HCLK, NULL, "hclk"),
-	ALIAS(MPLL, NULL, "mpll"),
-	ALIAS(MSYSCLK, NULL, "fclk"),
-};
-
-static int s3c2412_restart(struct notifier_block *this,
-			   unsigned long mode, void *cmd)
-{
-	/* errata "Watch-dog/Software Reset Problem" specifies that
-	 * this reset must be done with the SYSCLK sourced from
-	 * EXTCLK instead of FOUT to avoid a glitch in the reset
-	 * mechanism.
-	 *
-	 * See the watchdog section of the S3C2412 manual for more
-	 * information on this fix.
-	 */
-
-	__raw_writel(0x00, reg_base + CLKSRC);
-	__raw_writel(0x533C2412, reg_base + SWRST);
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block s3c2412_restart_handler = {
-	.notifier_call = s3c2412_restart,
-	.priority = 129,
-};
-
-/*
- * fixed rate clocks generated outside the soc
- * Only necessary until the devicetree-move is complete
- */
-#define XTI	1
-static struct samsung_fixed_rate_clock s3c2412_common_frate_clks[] __initdata = {
-	FRATE(XTI, "xti", NULL, 0, 0),
-	FRATE(0, "ext", NULL, 0, 0),
-};
-
-static void __init s3c2412_common_clk_register_fixed_ext(
-		struct samsung_clk_provider *ctx,
-		unsigned long xti_f, unsigned long ext_f)
-{
-	/* xtal alias is necessary for the current cpufreq driver */
-	struct samsung_clock_alias xti_alias = ALIAS(XTI, NULL, "xtal");
-
-	s3c2412_common_frate_clks[0].fixed_rate = xti_f;
-	s3c2412_common_frate_clks[1].fixed_rate = ext_f;
-	samsung_clk_register_fixed_rate(ctx, s3c2412_common_frate_clks,
-				ARRAY_SIZE(s3c2412_common_frate_clks));
-
-	samsung_clk_register_alias(ctx, &xti_alias, 1);
-}
-
-void __init s3c2412_common_clk_init(struct device_node *np, unsigned long xti_f,
-				    unsigned long ext_f, void __iomem *base)
-{
-	struct samsung_clk_provider *ctx;
-	int ret;
-	reg_base = base;
-
-	if (np) {
-		reg_base = of_iomap(np, 0);
-		if (!reg_base)
-			panic("%s: failed to map registers\n", __func__);
-	}
-
-	ctx = samsung_clk_init(np, reg_base, NR_CLKS);
-
-	/* Register external clocks only in non-dt cases */
-	if (!np)
-		s3c2412_common_clk_register_fixed_ext(ctx, xti_f, ext_f);
-
-	/* Register PLLs. */
-	samsung_clk_register_pll(ctx, s3c2412_plls, ARRAY_SIZE(s3c2412_plls),
-				 reg_base);
-
-	/* Register common internal clocks. */
-	samsung_clk_register_mux(ctx, s3c2412_muxes, ARRAY_SIZE(s3c2412_muxes));
-	samsung_clk_register_div(ctx, s3c2412_dividers,
-					  ARRAY_SIZE(s3c2412_dividers));
-	samsung_clk_register_gate(ctx, s3c2412_gates,
-					ARRAY_SIZE(s3c2412_gates));
-	samsung_clk_register_fixed_factor(ctx, s3c2412_ffactor,
-					  ARRAY_SIZE(s3c2412_ffactor));
-	samsung_clk_register_alias(ctx, s3c2412_aliases,
-				   ARRAY_SIZE(s3c2412_aliases));
-
-	samsung_clk_sleep_init(reg_base, s3c2412_clk_regs,
-			       ARRAY_SIZE(s3c2412_clk_regs));
-
-	samsung_clk_of_add_provider(np, ctx);
-
-	ret = register_restart_handler(&s3c2412_restart_handler);
-	if (ret)
-		pr_warn("cannot register restart handler, %d\n", ret);
-}
-
-static void __init s3c2412_clk_init(struct device_node *np)
-{
-	s3c2412_common_clk_init(np, 0, 0, NULL);
-}
-CLK_OF_DECLARE(s3c2412_clk, "samsung,s3c2412-clock", s3c2412_clk_init);

include/linux/platform_data/clk-s3c2410.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (c) 2020 Krzysztof Kozlowski <krzk@kernel.org>
- */
-
-#ifndef __LINUX_PLATFORM_DATA_CLK_S3C2410_H_
-#define __LINUX_PLATFORM_DATA_CLK_S3C2410_H_
-
-/**
- * struct s3c2410_clk_platform_data - platform data for S3C2410 clock driver
- *
- * @modify_misccr: Function to modify the MISCCR and return the new value
- */
-struct s3c2410_clk_platform_data {
-	unsigned int (*modify_misccr)(unsigned int clr, unsigned int chg);
-};
-
-#endif /* __LINUX_PLATFORM_DATA_CLK_S3C2410_H_ */
-