| /* |
| * Copyright (c) 2014 Linaro Ltd. |
| * Copyright (c) 2014 Hisilicon Limited. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| */ |
| |
| #include <linux/of_address.h> |
| #include <dt-bindings/clock/hix5hd2-clock.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include "clk.h" |
| |
| static struct hisi_fixed_rate_clock hix5hd2_fixed_rate_clks[] __initdata = { |
| { HIX5HD2_FIXED_1200M, "1200m", NULL, CLK_IS_ROOT, 1200000000, }, |
| { HIX5HD2_FIXED_400M, "400m", NULL, CLK_IS_ROOT, 400000000, }, |
| { HIX5HD2_FIXED_48M, "48m", NULL, CLK_IS_ROOT, 48000000, }, |
| { HIX5HD2_FIXED_24M, "24m", NULL, CLK_IS_ROOT, 24000000, }, |
| { HIX5HD2_FIXED_600M, "600m", NULL, CLK_IS_ROOT, 600000000, }, |
| { HIX5HD2_FIXED_300M, "300m", NULL, CLK_IS_ROOT, 300000000, }, |
| { HIX5HD2_FIXED_75M, "75m", NULL, CLK_IS_ROOT, 75000000, }, |
| { HIX5HD2_FIXED_200M, "200m", NULL, CLK_IS_ROOT, 200000000, }, |
| { HIX5HD2_FIXED_100M, "100m", NULL, CLK_IS_ROOT, 100000000, }, |
| { HIX5HD2_FIXED_40M, "40m", NULL, CLK_IS_ROOT, 40000000, }, |
| { HIX5HD2_FIXED_150M, "150m", NULL, CLK_IS_ROOT, 150000000, }, |
| { HIX5HD2_FIXED_1728M, "1728m", NULL, CLK_IS_ROOT, 1728000000, }, |
| { HIX5HD2_FIXED_28P8M, "28p8m", NULL, CLK_IS_ROOT, 28000000, }, |
| { HIX5HD2_FIXED_432M, "432m", NULL, CLK_IS_ROOT, 432000000, }, |
| { HIX5HD2_FIXED_345P6M, "345p6m", NULL, CLK_IS_ROOT, 345000000, }, |
| { HIX5HD2_FIXED_288M, "288m", NULL, CLK_IS_ROOT, 288000000, }, |
| { HIX5HD2_FIXED_60M, "60m", NULL, CLK_IS_ROOT, 60000000, }, |
| { HIX5HD2_FIXED_750M, "750m", NULL, CLK_IS_ROOT, 750000000, }, |
| { HIX5HD2_FIXED_500M, "500m", NULL, CLK_IS_ROOT, 500000000, }, |
| { HIX5HD2_FIXED_54M, "54m", NULL, CLK_IS_ROOT, 54000000, }, |
| { HIX5HD2_FIXED_27M, "27m", NULL, CLK_IS_ROOT, 27000000, }, |
| { HIX5HD2_FIXED_1500M, "1500m", NULL, CLK_IS_ROOT, 1500000000, }, |
| { HIX5HD2_FIXED_375M, "375m", NULL, CLK_IS_ROOT, 375000000, }, |
| { HIX5HD2_FIXED_187M, "187m", NULL, CLK_IS_ROOT, 187000000, }, |
| { HIX5HD2_FIXED_250M, "250m", NULL, CLK_IS_ROOT, 250000000, }, |
| { HIX5HD2_FIXED_125M, "125m", NULL, CLK_IS_ROOT, 125000000, }, |
| { HIX5HD2_FIXED_2P02M, "2m", NULL, CLK_IS_ROOT, 2000000, }, |
| { HIX5HD2_FIXED_50M, "50m", NULL, CLK_IS_ROOT, 50000000, }, |
| { HIX5HD2_FIXED_25M, "25m", NULL, CLK_IS_ROOT, 25000000, }, |
| { HIX5HD2_FIXED_83M, "83m", NULL, CLK_IS_ROOT, 83333333, }, |
| }; |
| |
| static const char *sfc_mux_p[] __initconst = { |
| "24m", "150m", "200m", "100m", "75m", }; |
| static u32 sfc_mux_table[] = {0, 4, 5, 6, 7}; |
| |
| static const char *sdio_mux_p[] __initconst = { |
| "75m", "100m", "50m", "15m", }; |
| static u32 sdio_mux_table[] = {0, 1, 2, 3}; |
| |
| static const char *fephy_mux_p[] __initconst = { "25m", "125m"}; |
| static u32 fephy_mux_table[] = {0, 1}; |
| |
| |
| static struct hisi_mux_clock hix5hd2_mux_clks[] __initdata = { |
| { HIX5HD2_SFC_MUX, "sfc_mux", sfc_mux_p, ARRAY_SIZE(sfc_mux_p), |
| CLK_SET_RATE_PARENT, 0x5c, 8, 3, 0, sfc_mux_table, }, |
| { HIX5HD2_MMC_MUX, "mmc_mux", sdio_mux_p, ARRAY_SIZE(sdio_mux_p), |
| CLK_SET_RATE_PARENT, 0xa0, 8, 2, 0, sdio_mux_table, }, |
| { HIX5HD2_SD_MUX, "sd_mux", sdio_mux_p, ARRAY_SIZE(sdio_mux_p), |
| CLK_SET_RATE_PARENT, 0x9c, 8, 2, 0, sdio_mux_table, }, |
| { HIX5HD2_FEPHY_MUX, "fephy_mux", |
| fephy_mux_p, ARRAY_SIZE(fephy_mux_p), |
| CLK_SET_RATE_PARENT, 0x120, 8, 2, 0, fephy_mux_table, }, |
| }; |
| |
| static struct hisi_gate_clock hix5hd2_gate_clks[] __initdata = { |
| /* sfc */ |
| { HIX5HD2_SFC_CLK, "clk_sfc", "sfc_mux", |
| CLK_SET_RATE_PARENT, 0x5c, 0, 0, }, |
| { HIX5HD2_SFC_RST, "rst_sfc", "clk_sfc", |
| CLK_SET_RATE_PARENT, 0x5c, 4, CLK_GATE_SET_TO_DISABLE, }, |
| /* sdio0 */ |
| { HIX5HD2_SD_BIU_CLK, "clk_sd_biu", "200m", |
| CLK_SET_RATE_PARENT, 0x9c, 0, 0, }, |
| { HIX5HD2_SD_CIU_CLK, "clk_sd_ciu", "sd_mux", |
| CLK_SET_RATE_PARENT, 0x9c, 1, 0, }, |
| { HIX5HD2_SD_CIU_RST, "rst_sd_ciu", "clk_sd_ciu", |
| CLK_SET_RATE_PARENT, 0x9c, 4, CLK_GATE_SET_TO_DISABLE, }, |
| /* sdio1 */ |
| { HIX5HD2_MMC_BIU_CLK, "clk_mmc_biu", "200m", |
| CLK_SET_RATE_PARENT, 0xa0, 0, 0, }, |
| { HIX5HD2_MMC_CIU_CLK, "clk_mmc_ciu", "mmc_mux", |
| CLK_SET_RATE_PARENT, 0xa0, 1, 0, }, |
| { HIX5HD2_MMC_CIU_RST, "rst_mmc_ciu", "clk_mmc_ciu", |
| CLK_SET_RATE_PARENT, 0xa0, 4, CLK_GATE_SET_TO_DISABLE, }, |
| /* gsf */ |
| { HIX5HD2_FWD_BUS_CLK, "clk_fwd_bus", NULL, 0, 0xcc, 0, 0, }, |
| { HIX5HD2_FWD_SYS_CLK, "clk_fwd_sys", "clk_fwd_bus", 0, 0xcc, 5, 0, }, |
| { HIX5HD2_MAC0_PHY_CLK, "clk_fephy", "clk_fwd_sys", |
| CLK_SET_RATE_PARENT, 0x120, 0, 0, }, |
| /* wdg0 */ |
| { HIX5HD2_WDG0_CLK, "clk_wdg0", "24m", |
| CLK_SET_RATE_PARENT, 0x178, 0, 0, }, |
| { HIX5HD2_WDG0_RST, "rst_wdg0", "clk_wdg0", |
| CLK_SET_RATE_PARENT, 0x178, 4, CLK_GATE_SET_TO_DISABLE, }, |
| }; |
| |
| enum hix5hd2_clk_type { |
| TYPE_COMPLEX, |
| TYPE_ETHER, |
| }; |
| |
| struct hix5hd2_complex_clock { |
| const char *name; |
| const char *parent_name; |
| u32 id; |
| u32 ctrl_reg; |
| u32 ctrl_clk_mask; |
| u32 ctrl_rst_mask; |
| u32 phy_reg; |
| u32 phy_clk_mask; |
| u32 phy_rst_mask; |
| enum hix5hd2_clk_type type; |
| }; |
| |
| struct hix5hd2_clk_complex { |
| struct clk_hw hw; |
| u32 id; |
| void __iomem *ctrl_reg; |
| u32 ctrl_clk_mask; |
| u32 ctrl_rst_mask; |
| void __iomem *phy_reg; |
| u32 phy_clk_mask; |
| u32 phy_rst_mask; |
| }; |
| |
| static struct hix5hd2_complex_clock hix5hd2_complex_clks[] __initdata = { |
| {"clk_mac0", "clk_fephy", HIX5HD2_MAC0_CLK, |
| 0xcc, 0xa, 0x500, 0x120, 0, 0x10, TYPE_ETHER}, |
| {"clk_mac1", "clk_fwd_sys", HIX5HD2_MAC1_CLK, |
| 0xcc, 0x14, 0xa00, 0x168, 0x2, 0, TYPE_ETHER}, |
| {"clk_sata", NULL, HIX5HD2_SATA_CLK, |
| 0xa8, 0x1f, 0x300, 0xac, 0x1, 0x0, TYPE_COMPLEX}, |
| {"clk_usb", NULL, HIX5HD2_USB_CLK, |
| 0xb8, 0xff, 0x3f000, 0xbc, 0x7, 0x3f00, TYPE_COMPLEX}, |
| }; |
| |
| #define to_complex_clk(_hw) container_of(_hw, struct hix5hd2_clk_complex, hw) |
| |
| static int clk_ether_prepare(struct clk_hw *hw) |
| { |
| struct hix5hd2_clk_complex *clk = to_complex_clk(hw); |
| u32 val; |
| |
| val = readl_relaxed(clk->ctrl_reg); |
| val |= clk->ctrl_clk_mask | clk->ctrl_rst_mask; |
| writel_relaxed(val, clk->ctrl_reg); |
| val &= ~(clk->ctrl_rst_mask); |
| writel_relaxed(val, clk->ctrl_reg); |
| |
| val = readl_relaxed(clk->phy_reg); |
| val |= clk->phy_clk_mask; |
| val &= ~(clk->phy_rst_mask); |
| writel_relaxed(val, clk->phy_reg); |
| mdelay(10); |
| |
| val &= ~(clk->phy_clk_mask); |
| val |= clk->phy_rst_mask; |
| writel_relaxed(val, clk->phy_reg); |
| mdelay(10); |
| |
| val |= clk->phy_clk_mask; |
| val &= ~(clk->phy_rst_mask); |
| writel_relaxed(val, clk->phy_reg); |
| mdelay(30); |
| return 0; |
| } |
| |
| static void clk_ether_unprepare(struct clk_hw *hw) |
| { |
| struct hix5hd2_clk_complex *clk = to_complex_clk(hw); |
| u32 val; |
| |
| val = readl_relaxed(clk->ctrl_reg); |
| val &= ~(clk->ctrl_clk_mask); |
| writel_relaxed(val, clk->ctrl_reg); |
| } |
| |
| static struct clk_ops clk_ether_ops = { |
| .prepare = clk_ether_prepare, |
| .unprepare = clk_ether_unprepare, |
| }; |
| |
| static int clk_complex_enable(struct clk_hw *hw) |
| { |
| struct hix5hd2_clk_complex *clk = to_complex_clk(hw); |
| u32 val; |
| |
| val = readl_relaxed(clk->ctrl_reg); |
| val |= clk->ctrl_clk_mask; |
| val &= ~(clk->ctrl_rst_mask); |
| writel_relaxed(val, clk->ctrl_reg); |
| |
| val = readl_relaxed(clk->phy_reg); |
| val |= clk->phy_clk_mask; |
| val &= ~(clk->phy_rst_mask); |
| writel_relaxed(val, clk->phy_reg); |
| |
| return 0; |
| } |
| |
| static void clk_complex_disable(struct clk_hw *hw) |
| { |
| struct hix5hd2_clk_complex *clk = to_complex_clk(hw); |
| u32 val; |
| |
| val = readl_relaxed(clk->ctrl_reg); |
| val |= clk->ctrl_rst_mask; |
| val &= ~(clk->ctrl_clk_mask); |
| writel_relaxed(val, clk->ctrl_reg); |
| |
| val = readl_relaxed(clk->phy_reg); |
| val |= clk->phy_rst_mask; |
| val &= ~(clk->phy_clk_mask); |
| writel_relaxed(val, clk->phy_reg); |
| } |
| |
| static struct clk_ops clk_complex_ops = { |
| .enable = clk_complex_enable, |
| .disable = clk_complex_disable, |
| }; |
| |
| void __init hix5hd2_clk_register_complex(struct hix5hd2_complex_clock *clks, |
| int nums, struct hisi_clock_data *data) |
| { |
| void __iomem *base = data->base; |
| int i; |
| |
| for (i = 0; i < nums; i++) { |
| struct hix5hd2_clk_complex *p_clk; |
| struct clk *clk; |
| struct clk_init_data init; |
| |
| p_clk = kzalloc(sizeof(*p_clk), GFP_KERNEL); |
| if (!p_clk) |
| return; |
| |
| init.name = clks[i].name; |
| if (clks[i].type == TYPE_ETHER) |
| init.ops = &clk_ether_ops; |
| else |
| init.ops = &clk_complex_ops; |
| |
| init.flags = CLK_IS_BASIC; |
| init.parent_names = |
| (clks[i].parent_name ? &clks[i].parent_name : NULL); |
| init.num_parents = (clks[i].parent_name ? 1 : 0); |
| |
| p_clk->ctrl_reg = base + clks[i].ctrl_reg; |
| p_clk->ctrl_clk_mask = clks[i].ctrl_clk_mask; |
| p_clk->ctrl_rst_mask = clks[i].ctrl_rst_mask; |
| p_clk->phy_reg = base + clks[i].phy_reg; |
| p_clk->phy_clk_mask = clks[i].phy_clk_mask; |
| p_clk->phy_rst_mask = clks[i].phy_rst_mask; |
| p_clk->hw.init = &init; |
| |
| clk = clk_register(NULL, &p_clk->hw); |
| if (IS_ERR(clk)) { |
| kfree(p_clk); |
| pr_err("%s: failed to register clock %s\n", |
| __func__, clks[i].name); |
| continue; |
| } |
| |
| data->clk_data.clks[clks[i].id] = clk; |
| } |
| } |
| |
| static void __init hix5hd2_clk_init(struct device_node *np) |
| { |
| struct hisi_clock_data *clk_data; |
| |
| clk_data = hisi_clk_init(np, HIX5HD2_NR_CLKS); |
| if (!clk_data) |
| return; |
| |
| hisi_clk_register_fixed_rate(hix5hd2_fixed_rate_clks, |
| ARRAY_SIZE(hix5hd2_fixed_rate_clks), |
| clk_data); |
| hisi_clk_register_mux(hix5hd2_mux_clks, ARRAY_SIZE(hix5hd2_mux_clks), |
| clk_data); |
| hisi_clk_register_gate(hix5hd2_gate_clks, |
| ARRAY_SIZE(hix5hd2_gate_clks), clk_data); |
| hix5hd2_clk_register_complex(hix5hd2_complex_clks, |
| ARRAY_SIZE(hix5hd2_complex_clks), |
| clk_data); |
| } |
| |
| CLK_OF_DECLARE(hix5hd2_clk, "hisilicon,hix5hd2-clock", hix5hd2_clk_init); |