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Commit c80dfd9b authored by Pan Wen's avatar Pan Wen Committed by Stephen Boyd
Browse files

clk: hisilicon: add CRG driver for Hi3516CV300 SoC 



Add CRG driver for Hi3516CV300 SoC. CRG(Clock and Reset
Generator) module generates clock and reset signals used
by other module blocks on SoC.

Signed-off-by: default avatarPan Wen <wenpan@hisilicon.com>
Signed-off-by: default avatarJiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent 707d33cb

drivers/clk/hisilicon/Kconfig

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config COMMON_CLK_HI3516CV300

	tristate "HI3516CV300 Clock Driver"

	depends on ARCH_HISI || COMPILE_TEST

	select RESET_HISI

	default ARCH_HISI

	help

	  Build the clock driver for hi3516cv300.



config COMMON_CLK_HI3519

	tristate "Hi3519 Clock Driver"

	depends on ARCH_HISI || COMPILE_TEST

drivers/clk/hisilicon/Makefile

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@@ -7,6 +7,7 @@ obj-y += clk.o clkgate-separated.o clkdivider-hi6220.o 
obj-$(CONFIG_ARCH_HI3xxx)	+= clk-hi3620.o

obj-$(CONFIG_ARCH_HIP04)	+= clk-hip04.o

obj-$(CONFIG_ARCH_HIX5HD2)	+= clk-hix5hd2.o

obj-$(CONFIG_COMMON_CLK_HI3516CV300)	+= crg-hi3516cv300.o

obj-$(CONFIG_COMMON_CLK_HI3519)	+= clk-hi3519.o

obj-$(CONFIG_COMMON_CLK_HI3798CV200)	+= crg-hi3798cv200.o

obj-$(CONFIG_COMMON_CLK_HI6220)	+= clk-hi6220.o

drivers/clk/hisilicon/crg-hi3516cv300.c

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/*

 * Hi3516CV300 Clock and Reset Generator Driver

 *

 * Copyright (c) 2016 HiSilicon Technologies Co., Ltd.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */



#include <dt-bindings/clock/hi3516cv300-clock.h>

#include <linux/clk-provider.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/platform_device.h>

#include "clk.h"

#include "crg.h"

#include "reset.h"



/* hi3516CV300 core CRG */

#define HI3516CV300_INNER_CLK_OFFSET	64

#define HI3516CV300_FIXED_3M		65

#define HI3516CV300_FIXED_6M		66

#define HI3516CV300_FIXED_24M		67

#define HI3516CV300_FIXED_49P5		68

#define HI3516CV300_FIXED_50M		69

#define HI3516CV300_FIXED_83P3M		70

#define HI3516CV300_FIXED_99M		71

#define HI3516CV300_FIXED_100M		72

#define HI3516CV300_FIXED_148P5M	73

#define HI3516CV300_FIXED_198M		74

#define HI3516CV300_FIXED_297M		75

#define HI3516CV300_UART_MUX		76

#define HI3516CV300_FMC_MUX		77

#define HI3516CV300_MMC0_MUX		78

#define HI3516CV300_MMC1_MUX		79

#define HI3516CV300_MMC2_MUX		80

#define HI3516CV300_MMC3_MUX		81

#define HI3516CV300_PWM_MUX		82

#define HI3516CV300_CRG_NR_CLKS		128



static const struct hisi_fixed_rate_clock hi3516cv300_fixed_rate_clks[] = {

	{ HI3516CV300_FIXED_3M, "3m", NULL, 0, 3000000, },

	{ HI3516CV300_FIXED_6M, "6m", NULL, 0, 6000000, },

	{ HI3516CV300_FIXED_24M, "24m", NULL, 0, 24000000, },

	{ HI3516CV300_FIXED_49P5, "49.5m", NULL, 0, 49500000, },

	{ HI3516CV300_FIXED_50M, "50m", NULL, 0, 50000000, },

	{ HI3516CV300_FIXED_83P3M, "83.3m", NULL, 0, 83300000, },

	{ HI3516CV300_FIXED_99M, "99m", NULL, 0, 99000000, },

	{ HI3516CV300_FIXED_100M, "100m", NULL, 0, 100000000, },

	{ HI3516CV300_FIXED_148P5M, "148.5m", NULL, 0, 148500000, },

	{ HI3516CV300_FIXED_198M, "198m", NULL, 0, 198000000, },

	{ HI3516CV300_FIXED_297M, "297m", NULL, 0, 297000000, },

	{ HI3516CV300_APB_CLK, "apb", NULL, 0, 50000000, },

};



static const char *const uart_mux_p[] = {"24m", "6m"};

static const char *const fmc_mux_p[] = {

	"24m", "83.3m", "148.5m", "198m", "297m"

};

static const char *const mmc_mux_p[] = {"49.5m"};

static const char *const mmc2_mux_p[] = {"99m", "49.5m"};

static const char *const pwm_mux_p[] = {"3m", "50m", "24m", "24m"};



static u32 uart_mux_table[] = {0, 1};

static u32 fmc_mux_table[] = {0, 1, 2, 3, 4};

static u32 mmc_mux_table[] = {0};

static u32 mmc2_mux_table[] = {0, 2};

static u32 pwm_mux_table[] = {0, 1, 2, 3};



static const struct hisi_mux_clock hi3516cv300_mux_clks[] = {

	{ HI3516CV300_UART_MUX, "uart_mux", uart_mux_p, ARRAY_SIZE(uart_mux_p),

		CLK_SET_RATE_PARENT, 0xe4, 19, 1, 0, uart_mux_table, },

	{ HI3516CV300_FMC_MUX, "fmc_mux", fmc_mux_p, ARRAY_SIZE(fmc_mux_p),

		CLK_SET_RATE_PARENT, 0xc0, 2, 3, 0, fmc_mux_table, },

	{ HI3516CV300_MMC0_MUX, "mmc0_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),

		CLK_SET_RATE_PARENT, 0xc4, 4, 2, 0, mmc_mux_table, },

	{ HI3516CV300_MMC1_MUX, "mmc1_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),

		CLK_SET_RATE_PARENT, 0xc4, 12, 2, 0, mmc_mux_table, },

	{ HI3516CV300_MMC2_MUX, "mmc2_mux", mmc2_mux_p, ARRAY_SIZE(mmc2_mux_p),

		CLK_SET_RATE_PARENT, 0xc4, 20, 2, 0, mmc2_mux_table, },

	{ HI3516CV300_MMC3_MUX, "mmc3_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),

		CLK_SET_RATE_PARENT, 0xc8, 4, 2, 0, mmc_mux_table, },

	{ HI3516CV300_PWM_MUX, "pwm_mux", pwm_mux_p, ARRAY_SIZE(pwm_mux_p),

		CLK_SET_RATE_PARENT, 0x38, 2, 2, 0, pwm_mux_table, },

};



static const struct hisi_gate_clock hi3516cv300_gate_clks[] = {



	{ HI3516CV300_UART0_CLK, "clk_uart0", "uart_mux", CLK_SET_RATE_PARENT,

		0xe4, 15, 0, },

	{ HI3516CV300_UART1_CLK, "clk_uart1", "uart_mux", CLK_SET_RATE_PARENT,

		0xe4, 16, 0, },

	{ HI3516CV300_UART2_CLK, "clk_uart2", "uart_mux", CLK_SET_RATE_PARENT,

		0xe4, 17, 0, },



	{ HI3516CV300_SPI0_CLK, "clk_spi0", "100m", CLK_SET_RATE_PARENT,

		0xe4, 13, 0, },

	{ HI3516CV300_SPI1_CLK, "clk_spi1", "100m", CLK_SET_RATE_PARENT,

		0xe4, 14, 0, },



	{ HI3516CV300_FMC_CLK, "clk_fmc", "fmc_mux", CLK_SET_RATE_PARENT,

		0xc0, 1, 0, },

	{ HI3516CV300_MMC0_CLK, "clk_mmc0", "mmc0_mux", CLK_SET_RATE_PARENT,

		0xc4, 1, 0, },

	{ HI3516CV300_MMC1_CLK, "clk_mmc1", "mmc1_mux", CLK_SET_RATE_PARENT,

		0xc4, 9, 0, },

	{ HI3516CV300_MMC2_CLK, "clk_mmc2", "mmc2_mux", CLK_SET_RATE_PARENT,

		0xc4, 17, 0, },

	{ HI3516CV300_MMC3_CLK, "clk_mmc3", "mmc3_mux", CLK_SET_RATE_PARENT,

		0xc8, 1, 0, },



	{ HI3516CV300_ETH_CLK, "clk_eth", NULL, 0, 0xec, 1, 0, },



	{ HI3516CV300_DMAC_CLK, "clk_dmac", NULL, 0, 0xd8, 5, 0, },

	{ HI3516CV300_PWM_CLK, "clk_pwm", "pwm_mux", CLK_SET_RATE_PARENT,

		0x38, 1, 0, },



	{ HI3516CV300_USB2_BUS_CLK, "clk_usb2_bus", NULL, 0, 0xb8, 0, 0, },

	{ HI3516CV300_USB2_OHCI48M_CLK, "clk_usb2_ohci48m", NULL, 0,

		0xb8, 1, 0, },

	{ HI3516CV300_USB2_OHCI12M_CLK, "clk_usb2_ohci12m", NULL, 0,

		0xb8, 2, 0, },

	{ HI3516CV300_USB2_OTG_UTMI_CLK, "clk_usb2_otg_utmi", NULL, 0,

		0xb8, 3, 0, },

	{ HI3516CV300_USB2_HST_PHY_CLK, "clk_usb2_hst_phy", NULL, 0,

		0xb8, 4, 0, },

	{ HI3516CV300_USB2_UTMI0_CLK, "clk_usb2_utmi0", NULL, 0, 0xb8, 5, 0, },

	{ HI3516CV300_USB2_PHY_CLK, "clk_usb2_phy", NULL, 0, 0xb8, 7, 0, },

};



static struct hisi_clock_data *hi3516cv300_clk_register(

		struct platform_device *pdev)

{

	struct hisi_clock_data *clk_data;

	int ret;



	clk_data = hisi_clk_alloc(pdev, HI3516CV300_CRG_NR_CLKS);

	if (!clk_data)

		return ERR_PTR(-ENOMEM);



	ret = hisi_clk_register_fixed_rate(hi3516cv300_fixed_rate_clks,

			ARRAY_SIZE(hi3516cv300_fixed_rate_clks), clk_data);

	if (ret)

		return ERR_PTR(ret);



	ret = hisi_clk_register_mux(hi3516cv300_mux_clks,

			ARRAY_SIZE(hi3516cv300_mux_clks), clk_data);

	if (ret)

		goto unregister_fixed_rate;



	ret = hisi_clk_register_gate(hi3516cv300_gate_clks,

			ARRAY_SIZE(hi3516cv300_gate_clks), clk_data);

	if (ret)

		goto unregister_mux;



	ret = of_clk_add_provider(pdev->dev.of_node,

			of_clk_src_onecell_get, &clk_data->clk_data);

	if (ret)

		goto unregister_gate;



	return clk_data;



unregister_gate:

	hisi_clk_unregister_gate(hi3516cv300_gate_clks,

				ARRAY_SIZE(hi3516cv300_gate_clks), clk_data);

unregister_mux:

	hisi_clk_unregister_mux(hi3516cv300_mux_clks,

			ARRAY_SIZE(hi3516cv300_mux_clks), clk_data);

unregister_fixed_rate:

	hisi_clk_unregister_fixed_rate(hi3516cv300_fixed_rate_clks,

			ARRAY_SIZE(hi3516cv300_fixed_rate_clks), clk_data);

	return ERR_PTR(ret);

}



static void hi3516cv300_clk_unregister(struct platform_device *pdev)

{

	struct hisi_crg_dev *crg = platform_get_drvdata(pdev);



	of_clk_del_provider(pdev->dev.of_node);



	hisi_clk_unregister_gate(hi3516cv300_gate_clks,

			ARRAY_SIZE(hi3516cv300_gate_clks), crg->clk_data);

	hisi_clk_unregister_mux(hi3516cv300_mux_clks,

			ARRAY_SIZE(hi3516cv300_mux_clks), crg->clk_data);

	hisi_clk_unregister_fixed_rate(hi3516cv300_fixed_rate_clks,

			ARRAY_SIZE(hi3516cv300_fixed_rate_clks), crg->clk_data);

}



static const struct hisi_crg_funcs hi3516cv300_crg_funcs = {

	.register_clks = hi3516cv300_clk_register,

	.unregister_clks = hi3516cv300_clk_unregister,

};



/* hi3516CV300 sysctrl CRG */

#define HI3516CV300_SYSCTRL_NR_CLKS 16



static const char *wdt_mux_p[] __initconst = { "3m", "apb" };

static u32 wdt_mux_table[] = {0, 1};



static const struct hisi_mux_clock hi3516cv300_sysctrl_mux_clks[] = {

	{ HI3516CV300_WDT_CLK, "wdt", wdt_mux_p, ARRAY_SIZE(wdt_mux_p),

		CLK_SET_RATE_PARENT, 0x0, 23, 1, 0, wdt_mux_table, },

};



static struct hisi_clock_data *hi3516cv300_sysctrl_clk_register(

		struct platform_device *pdev)

{

	struct hisi_clock_data *clk_data;

	int ret;



	clk_data = hisi_clk_alloc(pdev, HI3516CV300_SYSCTRL_NR_CLKS);

	if (!clk_data)

		return ERR_PTR(-ENOMEM);



	ret = hisi_clk_register_mux(hi3516cv300_sysctrl_mux_clks,

			ARRAY_SIZE(hi3516cv300_sysctrl_mux_clks), clk_data);

	if (ret)

		return ERR_PTR(ret);





	ret = of_clk_add_provider(pdev->dev.of_node,

			of_clk_src_onecell_get, &clk_data->clk_data);

	if (ret)

		goto unregister_mux;



	return clk_data;



unregister_mux:

	hisi_clk_unregister_mux(hi3516cv300_sysctrl_mux_clks,

			ARRAY_SIZE(hi3516cv300_sysctrl_mux_clks), clk_data);

	return ERR_PTR(ret);

}



static void hi3516cv300_sysctrl_clk_unregister(struct platform_device *pdev)

{

	struct hisi_crg_dev *crg = platform_get_drvdata(pdev);



	of_clk_del_provider(pdev->dev.of_node);



	hisi_clk_unregister_mux(hi3516cv300_sysctrl_mux_clks,

			ARRAY_SIZE(hi3516cv300_sysctrl_mux_clks),

			crg->clk_data);

}



static const struct hisi_crg_funcs hi3516cv300_sysctrl_funcs = {

	.register_clks = hi3516cv300_sysctrl_clk_register,

	.unregister_clks = hi3516cv300_sysctrl_clk_unregister,

};



static const struct of_device_id hi3516cv300_crg_match_table[] = {

	{

		.compatible = "hisilicon,hi3516cv300-crg",

		.data = &hi3516cv300_crg_funcs

	},

	{

		.compatible = "hisilicon,hi3516cv300-sysctrl",

		.data = &hi3516cv300_sysctrl_funcs

	},

	{ }

};

MODULE_DEVICE_TABLE(of, hi3516cv300_crg_match_table);



static int hi3516cv300_crg_probe(struct platform_device *pdev)

{

	struct hisi_crg_dev *crg;



	crg = devm_kmalloc(&pdev->dev, sizeof(*crg), GFP_KERNEL);

	if (!crg)

		return -ENOMEM;



	crg->funcs = of_device_get_match_data(&pdev->dev);

	if (!crg->funcs)

		return -ENOENT;



	crg->rstc = hisi_reset_init(pdev);

	if (!crg->rstc)

		return -ENOMEM;



	crg->clk_data = crg->funcs->register_clks(pdev);

	if (IS_ERR(crg->clk_data)) {

		hisi_reset_exit(crg->rstc);

		return PTR_ERR(crg->clk_data);

	}



	platform_set_drvdata(pdev, crg);

	return 0;

}



static int hi3516cv300_crg_remove(struct platform_device *pdev)

{

	struct hisi_crg_dev *crg = platform_get_drvdata(pdev);



	hisi_reset_exit(crg->rstc);

	crg->funcs->unregister_clks(pdev);

	return 0;

}



static struct platform_driver hi3516cv300_crg_driver = {

	.probe          = hi3516cv300_crg_probe,

	.remove		= hi3516cv300_crg_remove,

	.driver         = {

		.name   = "hi3516cv300-crg",

		.of_match_table = hi3516cv300_crg_match_table,

	},

};



static int __init hi3516cv300_crg_init(void)

{

	return platform_driver_register(&hi3516cv300_crg_driver);

}

core_initcall(hi3516cv300_crg_init);



static void __exit hi3516cv300_crg_exit(void)

{

	platform_driver_unregister(&hi3516cv300_crg_driver);

}

module_exit(hi3516cv300_crg_exit);



MODULE_LICENSE("GPL v2");

MODULE_DESCRIPTION("HiSilicon Hi3516CV300 CRG Driver");

include/dt-bindings/clock/hi3516cv300-clock.h

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/*

 * Copyright (c) 2016 HiSilicon Technologies Co., Ltd.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */



#ifndef __DTS_HI3516CV300_CLOCK_H

#define __DTS_HI3516CV300_CLOCK_H



/* hi3516CV300 core CRG */

#define HI3516CV300_APB_CLK		0

#define HI3516CV300_UART0_CLK		1

#define HI3516CV300_UART1_CLK		2

#define HI3516CV300_UART2_CLK		3

#define HI3516CV300_SPI0_CLK		4

#define HI3516CV300_SPI1_CLK		5

#define HI3516CV300_FMC_CLK		6

#define HI3516CV300_MMC0_CLK		7

#define HI3516CV300_MMC1_CLK		8

#define HI3516CV300_MMC2_CLK		9

#define HI3516CV300_MMC3_CLK		10

#define HI3516CV300_ETH_CLK		11

#define HI3516CV300_ETH_MACIF_CLK	12

#define HI3516CV300_DMAC_CLK		13

#define HI3516CV300_PWM_CLK		14

#define HI3516CV300_USB2_BUS_CLK	15

#define HI3516CV300_USB2_OHCI48M_CLK	16

#define HI3516CV300_USB2_OHCI12M_CLK	17

#define HI3516CV300_USB2_OTG_UTMI_CLK	18

#define HI3516CV300_USB2_HST_PHY_CLK	19

#define HI3516CV300_USB2_UTMI0_CLK	20

#define HI3516CV300_USB2_PHY_CLK	21



/* hi3516CV300 sysctrl CRG */

#define HI3516CV300_WDT_CLK		1



#endif	/* __DTS_HI3516CV300_CLOCK_H */