drivers/clk/hisilicon/clk-hi3559a.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Hisilicon Hi3559A clock driver
 *
 * Copyright (c) 2019-2020, Huawei Tech. Co., Ltd.
 *
 * Author: Dongjiu Geng <gengdongjiu@huawei.com>
 */

#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

#include <dt-bindings/clock/hi3559av100-clock.h>

#include "clk.h"
#include "crg.h"
#include "reset.h"

#define CRG_BASE_ADDR  0x18020000
#define PLL_MASK_WIDTH 24

struct hi3559av100_pll_clock {
	u32	id;
	const char	*name;
	const char	*parent_name;
	const u32	ctrl_reg1;
	const u8	frac_shift;
	const u8	frac_width;
	const u8	postdiv1_shift;
	const u8	postdiv1_width;
	const u8	postdiv2_shift;
	const u8	postdiv2_width;
	const u32	ctrl_reg2;
	const u8	fbdiv_shift;
	const u8	fbdiv_width;
	const u8	refdiv_shift;
	const u8	refdiv_width;
};

struct hi3559av100_clk_pll {
	struct clk_hw	hw;
	u32	id;
	void __iomem	*ctrl_reg1;
	u8	frac_shift;
	u8	frac_width;
	u8	postdiv1_shift;
	u8	postdiv1_width;
	u8	postdiv2_shift;
	u8	postdiv2_width;
	void __iomem	*ctrl_reg2;
	u8	fbdiv_shift;
	u8	fbdiv_width;
	u8	refdiv_shift;
	u8	refdiv_width;
};

/* soc clk config */
static const struct hisi_fixed_rate_clock hi3559av100_fixed_rate_clks_crg[] = {
	{ HI3559AV100_FIXED_1188M, "1188m", NULL, 0, 1188000000, },
	{ HI3559AV100_FIXED_1000M, "1000m", NULL, 0, 1000000000, },
	{ HI3559AV100_FIXED_842M, "842m", NULL, 0, 842000000, },
	{ HI3559AV100_FIXED_792M, "792m", NULL, 0, 792000000, },
	{ HI3559AV100_FIXED_750M, "750m", NULL, 0, 750000000, },
	{ HI3559AV100_FIXED_710M, "710m", NULL, 0, 710000000, },
	{ HI3559AV100_FIXED_680M, "680m", NULL, 0, 680000000, },
	{ HI3559AV100_FIXED_667M, "667m", NULL, 0, 667000000, },
	{ HI3559AV100_FIXED_631M, "631m", NULL, 0, 631000000, },
	{ HI3559AV100_FIXED_600M, "600m", NULL, 0, 600000000, },
	{ HI3559AV100_FIXED_568M, "568m", NULL, 0, 568000000, },
	{ HI3559AV100_FIXED_500M, "500m", NULL, 0, 500000000, },
	{ HI3559AV100_FIXED_475M, "475m", NULL, 0, 475000000, },
	{ HI3559AV100_FIXED_428M, "428m", NULL, 0, 428000000, },
	{ HI3559AV100_FIXED_400M, "400m", NULL, 0, 400000000, },
	{ HI3559AV100_FIXED_396M, "396m", NULL, 0, 396000000, },
	{ HI3559AV100_FIXED_300M, "300m", NULL, 0, 300000000, },
	{ HI3559AV100_FIXED_250M, "250m", NULL, 0, 250000000, },
	{ HI3559AV100_FIXED_200M, "200m", NULL, 0, 200000000, },
	{ HI3559AV100_FIXED_198M, "198m", NULL, 0, 198000000, },
	{ HI3559AV100_FIXED_187p5M, "187p5m", NULL, 0, 187500000, },
	{ HI3559AV100_FIXED_150M, "150m", NULL, 0, 150000000, },
	{ HI3559AV100_FIXED_148p5M, "148p5m", NULL, 0, 1485000000, },
	{ HI3559AV100_FIXED_125M, "125m", NULL, 0, 125000000, },
	{ HI3559AV100_FIXED_107M, "107m", NULL, 0, 107000000, },
	{ HI3559AV100_FIXED_100M, "100m", NULL, 0, 100000000, },
	{ HI3559AV100_FIXED_99M, "99m",	NULL, 0, 99000000, },
	{ HI3559AV100_FIXED_75M, "75m", NULL, 0, 75000000, },
	{ HI3559AV100_FIXED_74p25M, "74p25m", NULL, 0, 74250000, },
	{ HI3559AV100_FIXED_72M, "72m",	NULL, 0, 72000000, },
	{ HI3559AV100_FIXED_60M, "60m",	NULL, 0, 60000000, },
	{ HI3559AV100_FIXED_54M, "54m",	NULL, 0, 54000000, },
	{ HI3559AV100_FIXED_50M, "50m",	NULL, 0, 50000000, },
	{ HI3559AV100_FIXED_49p5M, "49p5m", NULL, 0, 49500000, },
	{ HI3559AV100_FIXED_37p125M, "37p125m", NULL, 0, 37125000, },
	{ HI3559AV100_FIXED_36M, "36m",	NULL, 0, 36000000, },
	{ HI3559AV100_FIXED_32p4M, "32p4m", NULL, 0, 32400000, },
	{ HI3559AV100_FIXED_27M, "27m",	NULL, 0, 27000000, },
	{ HI3559AV100_FIXED_25M, "25m",	NULL, 0, 25000000, },
	{ HI3559AV100_FIXED_24M, "24m",	NULL, 0, 24000000, },
	{ HI3559AV100_FIXED_12M, "12m",	NULL, 0, 12000000, },
	{ HI3559AV100_FIXED_3M,	 "3m", NULL, 0, 3000000, },
	{ HI3559AV100_FIXED_1p6M, "1p6m", NULL, 0, 1600000, },
	{ HI3559AV100_FIXED_400K, "400k", NULL, 0, 400000, },
	{ HI3559AV100_FIXED_100K, "100k", NULL, 0, 100000, },
};


static const char *fmc_mux_p[] = {
	"24m", "75m", "125m", "150m", "200m", "250m", "300m", "400m"
};

static const char *mmc_mux_p[] = {
	"100k", "25m", "49p5m", "99m", "187p5m", "150m", "198m", "400k"
};

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

static const char *sysbus_mux_p[] = {
	"24m", "300m"
};

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

static const char *a73_clksel_mux_p[] = {
	"24m", "apll", "1000m"
};

static const u32 fmc_mux_table[]	= { 0, 1, 2, 3, 4, 5, 6, 7 };
static const u32 mmc_mux_table[]	= { 0, 1, 2, 3, 4, 5, 6, 7 };
static const u32 sysapb_mux_table[]	= { 0, 1 };
static const u32 sysbus_mux_table[]	= { 0, 1 };
static const u32 uart_mux_table[]	= { 0, 1, 2 };
static const u32 a73_clksel_mux_table[] = { 0, 1, 2 };

static struct hisi_mux_clock hi3559av100_mux_clks_crg[] = {
	{
		HI3559AV100_FMC_MUX, "fmc_mux", fmc_mux_p, ARRAY_SIZE(fmc_mux_p),
		CLK_SET_RATE_PARENT, 0x170, 2, 3, 0, fmc_mux_table,
	},
	{
		HI3559AV100_MMC0_MUX, "mmc0_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),
		CLK_SET_RATE_PARENT, 0x1a8, 24, 3, 0, mmc_mux_table,
	},
	{
		HI3559AV100_MMC1_MUX, "mmc1_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),
		CLK_SET_RATE_PARENT, 0x1ec, 24, 3, 0, mmc_mux_table,
	},

	{
		HI3559AV100_MMC2_MUX, "mmc2_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),
		CLK_SET_RATE_PARENT, 0x214, 24, 3, 0, mmc_mux_table,
	},

	{
		HI3559AV100_MMC3_MUX, "mmc3_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),
		CLK_SET_RATE_PARENT, 0x23c, 24, 3, 0, mmc_mux_table,
	},

	{
		HI3559AV100_SYSAPB_MUX, "sysapb_mux", sysapb_mux_p, ARRAY_SIZE(sysapb_mux_p),
		CLK_SET_RATE_PARENT, 0xe8, 3, 1, 0, sysapb_mux_table
	},

	{
		HI3559AV100_SYSBUS_MUX, "sysbus_mux", sysbus_mux_p, ARRAY_SIZE(sysbus_mux_p),
		CLK_SET_RATE_PARENT, 0xe8, 0, 1, 0, sysbus_mux_table
	},

	{
		HI3559AV100_UART_MUX, "uart_mux", uart_mux_p, ARRAY_SIZE(uart_mux_p),
		CLK_SET_RATE_PARENT, 0x198, 28, 2, 0, uart_mux_table
	},

	{
		HI3559AV100_A73_MUX, "a73_mux", a73_clksel_mux_p, ARRAY_SIZE(a73_clksel_mux_p),
		CLK_SET_RATE_PARENT, 0xe4, 0, 2, 0, a73_clksel_mux_table
	},
};

static struct hisi_gate_clock hi3559av100_gate_clks[] = {
	{
		HI3559AV100_FMC_CLK, "clk_fmc", "fmc_mux",
		CLK_SET_RATE_PARENT, 0x170, 1, 0,
	},
	{
		HI3559AV100_MMC0_CLK, "clk_mmc0", "mmc0_mux",
		CLK_SET_RATE_PARENT, 0x1a8, 28, 0,
	},
	{
		HI3559AV100_MMC1_CLK, "clk_mmc1", "mmc1_mux",
		CLK_SET_RATE_PARENT, 0x1ec, 28, 0,
	},
	{
		HI3559AV100_MMC2_CLK, "clk_mmc2", "mmc2_mux",
		CLK_SET_RATE_PARENT, 0x214, 28, 0,
	},
	{
		HI3559AV100_MMC3_CLK, "clk_mmc3", "mmc3_mux",
		CLK_SET_RATE_PARENT, 0x23c, 28, 0,
	},
	{
		HI3559AV100_UART0_CLK, "clk_uart0", "uart_mux",
		CLK_SET_RATE_PARENT, 0x198, 23, 0,
	},
	{
		HI3559AV100_UART1_CLK, "clk_uart1", "uart_mux",
		CLK_SET_RATE_PARENT, 0x198, 24, 0,
	},
	{
		HI3559AV100_UART2_CLK, "clk_uart2", "uart_mux",
		CLK_SET_RATE_PARENT, 0x198, 25, 0,
	},
	{
		HI3559AV100_UART3_CLK, "clk_uart3", "uart_mux",
		CLK_SET_RATE_PARENT, 0x198, 26, 0,
	},
	{
		HI3559AV100_UART4_CLK, "clk_uart4", "uart_mux",
		CLK_SET_RATE_PARENT, 0x198, 27, 0,
	},
	{
		HI3559AV100_ETH_CLK, "clk_eth", NULL,
		CLK_SET_RATE_PARENT, 0x0174, 1, 0,
	},
	{
		HI3559AV100_ETH_MACIF_CLK, "clk_eth_macif", NULL,
		CLK_SET_RATE_PARENT, 0x0174, 5, 0,
	},
	{
		HI3559AV100_ETH1_CLK, "clk_eth1", NULL,
		CLK_SET_RATE_PARENT, 0x0174, 3, 0,
	},
	{
		HI3559AV100_ETH1_MACIF_CLK, "clk_eth1_macif", NULL,
		CLK_SET_RATE_PARENT, 0x0174, 7, 0,
	},
	{
		HI3559AV100_I2C0_CLK, "clk_i2c0", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 16, 0,
	},
	{
		HI3559AV100_I2C1_CLK, "clk_i2c1", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 17, 0,
	},
	{
		HI3559AV100_I2C2_CLK, "clk_i2c2", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 18, 0,
	},
	{
		HI3559AV100_I2C3_CLK, "clk_i2c3", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 19, 0,
	},
	{
		HI3559AV100_I2C4_CLK, "clk_i2c4", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 20, 0,
	},
	{
		HI3559AV100_I2C5_CLK, "clk_i2c5", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 21, 0,
	},
	{
		HI3559AV100_I2C6_CLK, "clk_i2c6", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 22, 0,
	},
	{
		HI3559AV100_I2C7_CLK, "clk_i2c7", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 23, 0,
	},
	{
		HI3559AV100_I2C8_CLK, "clk_i2c8", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 24, 0,
	},
	{
		HI3559AV100_I2C9_CLK, "clk_i2c9", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 25, 0,
	},
	{
		HI3559AV100_I2C10_CLK, "clk_i2c10", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 26, 0,
	},
	{
		HI3559AV100_I2C11_CLK, "clk_i2c11", "50m",
		CLK_SET_RATE_PARENT, 0x01a0, 27, 0,
	},
	{
		HI3559AV100_SPI0_CLK, "clk_spi0", "100m",
		CLK_SET_RATE_PARENT, 0x0198, 16, 0,
	},
	{
		HI3559AV100_SPI1_CLK, "clk_spi1", "100m",
		CLK_SET_RATE_PARENT, 0x0198, 17, 0,
	},
	{
		HI3559AV100_SPI2_CLK, "clk_spi2", "100m",
		CLK_SET_RATE_PARENT, 0x0198, 18, 0,
	},
	{
		HI3559AV100_SPI3_CLK, "clk_spi3", "100m",
		CLK_SET_RATE_PARENT, 0x0198, 19, 0,
	},
	{
		HI3559AV100_SPI4_CLK, "clk_spi4", "100m",
		CLK_SET_RATE_PARENT, 0x0198, 20, 0,
	},
	{
		HI3559AV100_SPI5_CLK, "clk_spi5", "100m",
		CLK_SET_RATE_PARENT, 0x0198, 21, 0,
	},
	{
		HI3559AV100_SPI6_CLK, "clk_spi6", "100m",
		CLK_SET_RATE_PARENT, 0x0198, 22, 0,
	},
	{
		HI3559AV100_EDMAC_AXICLK, "axi_clk_edmac", NULL,
		CLK_SET_RATE_PARENT, 0x16c, 6, 0,
	},
	{
		HI3559AV100_EDMAC_CLK, "clk_edmac", NULL,
		CLK_SET_RATE_PARENT, 0x16c, 5, 0,
	},
	{
		HI3559AV100_EDMAC1_AXICLK, "axi_clk_edmac1", NULL,
		CLK_SET_RATE_PARENT, 0x16c, 9, 0,
	},
	{
		HI3559AV100_EDMAC1_CLK, "clk_edmac1", NULL,
		CLK_SET_RATE_PARENT, 0x16c, 8, 0,
	},
	{
		HI3559AV100_VDMAC_CLK, "clk_vdmac", NULL,
		CLK_SET_RATE_PARENT, 0x14c, 5, 0,
	},
};

static struct hi3559av100_pll_clock hi3559av100_pll_clks[] = {
	{
		HI3559AV100_APLL_CLK, "apll", NULL, 0x0, 0, 24, 24, 3, 28, 3,
		0x4, 0, 12, 12, 6
	},
	{
		HI3559AV100_GPLL_CLK, "gpll", NULL, 0x20, 0, 24, 24, 3, 28, 3,
		0x24, 0, 12, 12, 6
	},
};

#define to_pll_clk(_hw) container_of(_hw, struct hi3559av100_clk_pll, hw)
static void hi3559av100_calc_pll(u32 *frac_val, u32 *postdiv1_val,
				 u32 *postdiv2_val,
				 u32 *fbdiv_val, u32 *refdiv_val, u64 rate)
{
	u64 rem;

	*postdiv1_val = 2;
	*postdiv2_val = 1;

	rate = rate * ((*postdiv1_val) * (*postdiv2_val));

	*frac_val = 0;
	rem = do_div(rate, 1000000);
	rem = do_div(rate, PLL_MASK_WIDTH);
	*fbdiv_val = rate;
	*refdiv_val = 1;
	rem = rem * (1 << PLL_MASK_WIDTH);
	do_div(rem, PLL_MASK_WIDTH);
	*frac_val = rem;
}

static int clk_pll_set_rate(struct clk_hw *hw,
			    unsigned long rate,
			    unsigned long parent_rate)
{
	struct hi3559av100_clk_pll *clk = to_pll_clk(hw);
	u32 frac_val, postdiv1_val, postdiv2_val, fbdiv_val, refdiv_val;
	u32 val;

	postdiv1_val = postdiv2_val = 0;

	hi3559av100_calc_pll(&frac_val, &postdiv1_val, &postdiv2_val,
			     &fbdiv_val, &refdiv_val, (u64)rate);

	val = readl_relaxed(clk->ctrl_reg1);
	val &= ~(((1 << clk->frac_width) - 1) << clk->frac_shift);
	val &= ~(((1 << clk->postdiv1_width) - 1) << clk->postdiv1_shift);
	val &= ~(((1 << clk->postdiv2_width) - 1) << clk->postdiv2_shift);

	val |= frac_val << clk->frac_shift;
	val |= postdiv1_val << clk->postdiv1_shift;
	val |= postdiv2_val << clk->postdiv2_shift;
	writel_relaxed(val, clk->ctrl_reg1);

	val = readl_relaxed(clk->ctrl_reg2);
	val &= ~(((1 << clk->fbdiv_width) - 1) << clk->fbdiv_shift);
	val &= ~(((1 << clk->refdiv_width) - 1) << clk->refdiv_shift);

	val |= fbdiv_val << clk->fbdiv_shift;
	val |= refdiv_val << clk->refdiv_shift;
	writel_relaxed(val, clk->ctrl_reg2);

	return 0;
}

static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
		unsigned long parent_rate)
{
	struct hi3559av100_clk_pll *clk = to_pll_clk(hw);
	u64 frac_val, fbdiv_val;
	u32 postdiv1_val, postdiv2_val;
	u32 val;
	u64 tmp, rate;

	val = readl_relaxed(clk->ctrl_reg1);
	val = val >> clk->frac_shift;
	val &= ((1 << clk->frac_width) - 1);
	frac_val = val;

	val = readl_relaxed(clk->ctrl_reg1);
	val = val >> clk->postdiv1_shift;
	val &= ((1 << clk->postdiv1_width) - 1);
	postdiv1_val = val;

	val = readl_relaxed(clk->ctrl_reg1);
	val = val >> clk->postdiv2_shift;
	val &= ((1 << clk->postdiv2_width) - 1);
	postdiv2_val = val;

	val = readl_relaxed(clk->ctrl_reg2);
	val = val >> clk->fbdiv_shift;
	val &= ((1 << clk->fbdiv_width) - 1);
	fbdiv_val = val;

	val = readl_relaxed(clk->ctrl_reg2);
	val = val >> clk->refdiv_shift;
	val &= ((1 << clk->refdiv_width) - 1);

	/* rate = 24000000 * (fbdiv + frac / (1<<24) ) / refdiv  */
	rate = 0;
	tmp = 24000000 * fbdiv_val + (24000000 * frac_val) / (1 << 24);
	rate += tmp;
	rate = div_u64(rate, val);
	rate = div_u64(rate, postdiv1_val * postdiv2_val);

	return rate;
}

static const struct clk_ops hisi_clk_pll_ops = {
	.set_rate = clk_pll_set_rate,
	.recalc_rate = clk_pll_recalc_rate,
};

static void hisi_clk_register_pll(struct hi3559av100_pll_clock *clks,
			   int nums, struct hisi_clock_data *data, struct device *dev)
{
	void __iomem *base = data->base;
	struct hi3559av100_clk_pll *p_clk = NULL;
	struct clk *clk = NULL;
	struct clk_init_data init;
	int i;

	p_clk = devm_kcalloc(dev, nums, sizeof(*p_clk), GFP_KERNEL);
	if (!p_clk)
		return;

	for (i = 0; i < nums; i++) {
		init.name = clks[i].name;
		init.flags = 0;
		init.parent_names =
			(clks[i].parent_name ? &clks[i].parent_name : NULL);
		init.num_parents = (clks[i].parent_name ? 1 : 0);
		init.ops = &hisi_clk_pll_ops;

		p_clk->ctrl_reg1 = base + clks[i].ctrl_reg1;
		p_clk->frac_shift = clks[i].frac_shift;
		p_clk->frac_width = clks[i].frac_width;
		p_clk->postdiv1_shift = clks[i].postdiv1_shift;
		p_clk->postdiv1_width = clks[i].postdiv1_width;
		p_clk->postdiv2_shift = clks[i].postdiv2_shift;
		p_clk->postdiv2_width = clks[i].postdiv2_width;

		p_clk->ctrl_reg2 = base + clks[i].ctrl_reg2;
		p_clk->fbdiv_shift = clks[i].fbdiv_shift;
		p_clk->fbdiv_width = clks[i].fbdiv_width;
		p_clk->refdiv_shift = clks[i].refdiv_shift;
		p_clk->refdiv_width = clks[i].refdiv_width;
		p_clk->hw.init = &init;

		clk = clk_register(NULL, &p_clk->hw);
		if (IS_ERR(clk)) {
			dev_err(dev, "%s: failed to register clock %s\n",
			       __func__, clks[i].name);
			continue;
		}

		data->clk_data.clks[clks[i].id] = clk;
		p_clk++;
	}
}

static struct hisi_clock_data *hi3559av100_clk_register(
	struct platform_device *pdev)
{
	struct hisi_clock_data *clk_data;
	int ret;

	clk_data = hisi_clk_alloc(pdev, HI3559AV100_CRG_NR_CLKS);
	if (!clk_data)
		return ERR_PTR(-ENOMEM);

	ret = hisi_clk_register_fixed_rate(hi3559av100_fixed_rate_clks_crg,
					   ARRAY_SIZE(hi3559av100_fixed_rate_clks_crg), clk_data);
	if (ret)
		return ERR_PTR(ret);

	hisi_clk_register_pll(hi3559av100_pll_clks,
			      ARRAY_SIZE(hi3559av100_pll_clks), clk_data, &pdev->dev);

	ret = hisi_clk_register_mux(hi3559av100_mux_clks_crg,
				    ARRAY_SIZE(hi3559av100_mux_clks_crg), clk_data);
	if (ret)
		goto unregister_fixed_rate;

	ret = hisi_clk_register_gate(hi3559av100_gate_clks,
				     ARRAY_SIZE(hi3559av100_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(hi3559av100_gate_clks,
				 ARRAY_SIZE(hi3559av100_gate_clks), clk_data);
unregister_mux:
	hisi_clk_unregister_mux(hi3559av100_mux_clks_crg,
				ARRAY_SIZE(hi3559av100_mux_clks_crg), clk_data);
unregister_fixed_rate:
	hisi_clk_unregister_fixed_rate(hi3559av100_fixed_rate_clks_crg,
				       ARRAY_SIZE(hi3559av100_fixed_rate_clks_crg), clk_data);
	return ERR_PTR(ret);
}

static void hi3559av100_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(hi3559av100_gate_clks,
				 ARRAY_SIZE(hi3559av100_gate_clks), crg->clk_data);
	hisi_clk_unregister_mux(hi3559av100_mux_clks_crg,
				ARRAY_SIZE(hi3559av100_mux_clks_crg), crg->clk_data);
	hisi_clk_unregister_fixed_rate(hi3559av100_fixed_rate_clks_crg,
				       ARRAY_SIZE(hi3559av100_fixed_rate_clks_crg), crg->clk_data);
}

static const struct hisi_crg_funcs hi3559av100_crg_funcs = {
	.register_clks = hi3559av100_clk_register,
	.unregister_clks = hi3559av100_clk_unregister,
};

static struct hisi_fixed_rate_clock hi3559av100_shub_fixed_rate_clks[] = {
	{ HI3559AV100_SHUB_SOURCE_SOC_24M, "clk_source_24M", NULL, 0, 24000000UL, },
	{ HI3559AV100_SHUB_SOURCE_SOC_200M, "clk_source_200M", NULL, 0, 200000000UL, },
	{ HI3559AV100_SHUB_SOURCE_SOC_300M, "clk_source_300M", NULL, 0, 300000000UL, },
	{ HI3559AV100_SHUB_SOURCE_PLL, "clk_source_PLL", NULL, 0, 192000000UL, },
	{ HI3559AV100_SHUB_I2C0_CLK, "clk_shub_i2c0", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_I2C1_CLK, "clk_shub_i2c1", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_I2C2_CLK, "clk_shub_i2c2", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_I2C3_CLK, "clk_shub_i2c3", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_I2C4_CLK, "clk_shub_i2c4", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_I2C5_CLK, "clk_shub_i2c5", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_I2C6_CLK, "clk_shub_i2c6", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_I2C7_CLK, "clk_shub_i2c7", NULL, 0, 48000000UL, },
	{ HI3559AV100_SHUB_UART_CLK_32K, "clk_uart_32K", NULL, 0, 32000UL, },
};

/* shub mux clk */
static u32 shub_source_clk_mux_table[] = {0, 1, 2, 3};
static const char *shub_source_clk_mux_p[] = {
	"clk_source_24M", "clk_source_200M", "clk_source_300M", "clk_source_PLL"
};

static u32 shub_uart_source_clk_mux_table[] = {0, 1, 2, 3};
static const char *shub_uart_source_clk_mux_p[] = {
	"clk_uart_32K", "clk_uart_div_clk", "clk_uart_div_clk", "clk_source_24M"
};

static struct hisi_mux_clock hi3559av100_shub_mux_clks[] = {
	{
		HI3559AV100_SHUB_SOURCE_CLK, "shub_clk", shub_source_clk_mux_p,
		ARRAY_SIZE(shub_source_clk_mux_p),
		0, 0x0, 0, 2, 0, shub_source_clk_mux_table,
	},

	{
		HI3559AV100_SHUB_UART_SOURCE_CLK, "shub_uart_source_clk",
		shub_uart_source_clk_mux_p, ARRAY_SIZE(shub_uart_source_clk_mux_p),
		0, 0x1c, 28, 2, 0, shub_uart_source_clk_mux_table,
	},
};


/* shub div clk */
static struct clk_div_table shub_spi_clk_table[] = {{0, 8}, {1, 4}, {2, 2}, {/*sentinel*/}};
static struct clk_div_table shub_uart_div_clk_table[] = {{1, 8}, {2, 4}, {/*sentinel*/}};

static struct hisi_divider_clock hi3559av100_shub_div_clks[] = {
	{ HI3559AV100_SHUB_SPI_SOURCE_CLK, "clk_spi_clk", "shub_clk", 0, 0x20, 24, 2,
	  CLK_DIVIDER_ALLOW_ZERO, shub_spi_clk_table,
	},
	{ HI3559AV100_SHUB_UART_DIV_CLK, "clk_uart_div_clk", "shub_clk", 0, 0x1c, 28, 2,
	  CLK_DIVIDER_ALLOW_ZERO, shub_uart_div_clk_table,
	},
};

/* shub gate clk */
static struct hisi_gate_clock hi3559av100_shub_gate_clks[] = {
	{
		HI3559AV100_SHUB_SPI0_CLK, "clk_shub_spi0", "clk_spi_clk",
		0, 0x20, 1, 0,
	},
	{
		HI3559AV100_SHUB_SPI1_CLK, "clk_shub_spi1", "clk_spi_clk",
		0, 0x20, 5, 0,
	},
	{
		HI3559AV100_SHUB_SPI2_CLK, "clk_shub_spi2", "clk_spi_clk",
		0, 0x20, 9, 0,
	},

	{
		HI3559AV100_SHUB_UART0_CLK, "clk_shub_uart0", "shub_uart_source_clk",
		0, 0x1c, 1, 0,
	},
	{
		HI3559AV100_SHUB_UART1_CLK, "clk_shub_uart1", "shub_uart_source_clk",
		0, 0x1c, 5, 0,
	},
	{
		HI3559AV100_SHUB_UART2_CLK, "clk_shub_uart2", "shub_uart_source_clk",
		0, 0x1c, 9, 0,
	},
	{
		HI3559AV100_SHUB_UART3_CLK, "clk_shub_uart3", "shub_uart_source_clk",
		0, 0x1c, 13, 0,
	},
	{
		HI3559AV100_SHUB_UART4_CLK, "clk_shub_uart4", "shub_uart_source_clk",
		0, 0x1c, 17, 0,
	},
	{
		HI3559AV100_SHUB_UART5_CLK, "clk_shub_uart5", "shub_uart_source_clk",
		0, 0x1c, 21, 0,
	},
	{
		HI3559AV100_SHUB_UART6_CLK, "clk_shub_uart6", "shub_uart_source_clk",
		0, 0x1c, 25, 0,
	},

	{
		HI3559AV100_SHUB_EDMAC_CLK, "clk_shub_dmac", "shub_clk",
		0, 0x24, 4, 0,
	},
};

static int hi3559av100_shub_default_clk_set(void)
{
	void __iomem *crg_base;
	unsigned int val;

	crg_base = ioremap(CRG_BASE_ADDR, SZ_4K);

	/* SSP: 192M/2 */
	val = readl_relaxed(crg_base + 0x20);
	val |= (0x2 << 24);
	writel_relaxed(val, crg_base + 0x20);

	/* UART: 192M/8 */
	val = readl_relaxed(crg_base + 0x1C);
	val |= (0x1 << 28);
	writel_relaxed(val, crg_base + 0x1C);

	iounmap(crg_base);
	crg_base = NULL;

	return 0;
}

static struct hisi_clock_data *hi3559av100_shub_clk_register(
	struct platform_device *pdev)
{
	struct hisi_clock_data *clk_data = NULL;
	int ret;

	hi3559av100_shub_default_clk_set();

	clk_data = hisi_clk_alloc(pdev, HI3559AV100_SHUB_NR_CLKS);
	if (!clk_data)
		return ERR_PTR(-ENOMEM);

	ret = hisi_clk_register_fixed_rate(hi3559av100_shub_fixed_rate_clks,
					   ARRAY_SIZE(hi3559av100_shub_fixed_rate_clks), clk_data);
	if (ret)
		return ERR_PTR(ret);

	ret = hisi_clk_register_mux(hi3559av100_shub_mux_clks,
				    ARRAY_SIZE(hi3559av100_shub_mux_clks), clk_data);
	if (ret)
		goto unregister_fixed_rate;

	ret = hisi_clk_register_divider(hi3559av100_shub_div_clks,
					ARRAY_SIZE(hi3559av100_shub_div_clks), clk_data);
	if (ret)
		goto unregister_mux;

	ret = hisi_clk_register_gate(hi3559av100_shub_gate_clks,
				     ARRAY_SIZE(hi3559av100_shub_gate_clks), clk_data);
	if (ret)
		goto unregister_factor;

	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(hi3559av100_shub_gate_clks,
				 ARRAY_SIZE(hi3559av100_shub_gate_clks), clk_data);
unregister_factor:
	hisi_clk_unregister_divider(hi3559av100_shub_div_clks,
				    ARRAY_SIZE(hi3559av100_shub_div_clks), clk_data);
unregister_mux:
	hisi_clk_unregister_mux(hi3559av100_shub_mux_clks,
				ARRAY_SIZE(hi3559av100_shub_mux_clks), clk_data);
unregister_fixed_rate:
	hisi_clk_unregister_fixed_rate(hi3559av100_shub_fixed_rate_clks,
				       ARRAY_SIZE(hi3559av100_shub_fixed_rate_clks), clk_data);
	return ERR_PTR(ret);
}

static void hi3559av100_shub_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(hi3559av100_shub_gate_clks,
				 ARRAY_SIZE(hi3559av100_shub_gate_clks), crg->clk_data);
	hisi_clk_unregister_divider(hi3559av100_shub_div_clks,
				    ARRAY_SIZE(hi3559av100_shub_div_clks), crg->clk_data);
	hisi_clk_unregister_mux(hi3559av100_shub_mux_clks,
				ARRAY_SIZE(hi3559av100_shub_mux_clks), crg->clk_data);
	hisi_clk_unregister_fixed_rate(hi3559av100_shub_fixed_rate_clks,
				       ARRAY_SIZE(hi3559av100_shub_fixed_rate_clks), crg->clk_data);
}

static const struct hisi_crg_funcs hi3559av100_shub_crg_funcs = {
	.register_clks = hi3559av100_shub_clk_register,
	.unregister_clks = hi3559av100_shub_clk_unregister,
};

static const struct of_device_id hi3559av100_crg_match_table[] = {
	{
		.compatible = "hisilicon,hi3559av100-clock",
		.data = &hi3559av100_crg_funcs
	},
	{
		.compatible = "hisilicon,hi3559av100-shub-clock",
		.data = &hi3559av100_shub_crg_funcs
	},
	{ }
};
MODULE_DEVICE_TABLE(of, hi3559av100_crg_match_table);

static int hi3559av100_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 void hi3559av100_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);
}

static struct platform_driver hi3559av100_crg_driver = {
	.probe		= hi3559av100_crg_probe,
	.remove		= hi3559av100_crg_remove,
	.driver		= {
		.name	= "hi3559av100-clock",
		.of_match_table = hi3559av100_crg_match_table,
	},
};

static int __init hi3559av100_crg_init(void)
{
	return platform_driver_register(&hi3559av100_crg_driver);
}
core_initcall(hi3559av100_crg_init);

static void __exit hi3559av100_crg_exit(void)
{
	platform_driver_unregister(&hi3559av100_crg_driver);
}
module_exit(hi3559av100_crg_exit);


MODULE_DESCRIPTION("HiSilicon Hi3559AV100 CRG Driver");