diff options
Diffstat (limited to 'drivers/clk/hisilicon/clk-hi3559a.c')
| -rw-r--r-- | drivers/clk/hisilicon/clk-hi3559a.c | 845 |
1 files changed, 845 insertions, 0 deletions
diff --git a/drivers/clk/hisilicon/clk-hi3559a.c b/drivers/clk/hisilicon/clk-hi3559a.c new file mode 100644 index 000000000..9ea1a80ac --- /dev/null +++ b/drivers/clk/hisilicon/clk-hi3559a.c @@ -0,0 +1,845 @@ +// 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_device.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, refdiv_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); + refdiv_val = val; + + /* rate = 24000000 * (fbdiv + frac / (1<<24) ) / refdiv */ + rate = 0; + tmp = 24000000 * fbdiv_val + (24000000 * frac_val) / (1 << 24); + rate += tmp; + do_div(rate, refdiv_val); + do_div(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_kzalloc(dev, sizeof(*p_clk) * nums, 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)) { + devm_kfree(dev, p_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 int 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); + return 0; +} + +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_LICENSE("GPL v2"); +MODULE_DESCRIPTION("HiSilicon Hi3559AV100 CRG Driver"); |