| // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| /* |
| * Copyright (C) Sunplus Technology Co., Ltd. |
| * All rights reserved. |
| */ |
| #include <linux/module.h> |
| #include <linux/clk-provider.h> |
| #include <linux/of.h> |
| #include <linux/bitfield.h> |
| #include <linux/slab.h> |
| #include <linux/io.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| |
| #include <dt-bindings/clock/sunplus,sp7021-clkc.h> |
| |
| /* speical div_width values for PLLTV/PLLA */ |
| #define DIV_TV 33 |
| #define DIV_A 34 |
| |
| /* PLLTV parameters */ |
| enum { |
| SEL_FRA, |
| SDM_MOD, |
| PH_SEL, |
| NFRA, |
| DIVR, |
| DIVN, |
| DIVM, |
| P_MAX |
| }; |
| |
| #define MASK_SEL_FRA GENMASK(1, 1) |
| #define MASK_SDM_MOD GENMASK(2, 2) |
| #define MASK_PH_SEL GENMASK(4, 4) |
| #define MASK_NFRA GENMASK(12, 6) |
| #define MASK_DIVR GENMASK(8, 7) |
| #define MASK_DIVN GENMASK(7, 0) |
| #define MASK_DIVM GENMASK(14, 8) |
| |
| /* HIWORD_MASK FIELD_PREP */ |
| #define HWM_FIELD_PREP(mask, value) \ |
| ({ \ |
| u64 _m = mask; \ |
| (_m << 16) | FIELD_PREP(_m, value); \ |
| }) |
| |
| struct sp_pll { |
| struct clk_hw hw; |
| void __iomem *reg; |
| spinlock_t lock; /* lock for reg */ |
| int div_shift; |
| int div_width; |
| int pd_bit; /* power down bit idx */ |
| int bp_bit; /* bypass bit idx */ |
| unsigned long brate; /* base rate, TODO: replace brate with muldiv */ |
| u32 p[P_MAX]; /* for hold PLLTV/PLLA parameters */ |
| }; |
| |
| #define to_sp_pll(_hw) container_of(_hw, struct sp_pll, hw) |
| |
| struct sp_clk_gate_info { |
| u16 reg; /* reg_index_shift */ |
| u16 ext_parent; /* parent is extclk */ |
| }; |
| |
| static const struct sp_clk_gate_info sp_clk_gates[] = { |
| { 0x02 }, |
| { 0x05 }, |
| { 0x06 }, |
| { 0x07 }, |
| { 0x09 }, |
| { 0x0b, 1 }, |
| { 0x0f, 1 }, |
| { 0x14 }, |
| { 0x15 }, |
| { 0x16 }, |
| { 0x17 }, |
| { 0x18, 1 }, |
| { 0x19, 1 }, |
| { 0x1a, 1 }, |
| { 0x1b, 1 }, |
| { 0x1c, 1 }, |
| { 0x1d, 1 }, |
| { 0x1e }, |
| { 0x1f, 1 }, |
| { 0x20 }, |
| { 0x21 }, |
| { 0x22 }, |
| { 0x23 }, |
| { 0x24 }, |
| { 0x25 }, |
| { 0x26 }, |
| { 0x2a }, |
| { 0x2b }, |
| { 0x2d }, |
| { 0x2e }, |
| { 0x30 }, |
| { 0x31 }, |
| { 0x32 }, |
| { 0x33 }, |
| { 0x3d }, |
| { 0x3e }, |
| { 0x3f }, |
| { 0x42 }, |
| { 0x44 }, |
| { 0x4b }, |
| { 0x4c }, |
| { 0x4d }, |
| { 0x4e }, |
| { 0x4f }, |
| { 0x50 }, |
| { 0x55 }, |
| { 0x60 }, |
| { 0x61 }, |
| { 0x6a }, |
| { 0x73 }, |
| { 0x86 }, |
| { 0x8a }, |
| { 0x8b }, |
| { 0x8d }, |
| { 0x8e }, |
| { 0x8f }, |
| { 0x90 }, |
| { 0x92 }, |
| { 0x93 }, |
| { 0x95 }, |
| { 0x96 }, |
| { 0x97 }, |
| { 0x98 }, |
| { 0x99 }, |
| }; |
| |
| #define _M 1000000UL |
| #define F_27M (27 * _M) |
| |
| /*********************************** PLL_TV **********************************/ |
| |
| /* TODO: set proper FVCO range */ |
| #define FVCO_MIN (100 * _M) |
| #define FVCO_MAX (200 * _M) |
| |
| #define F_MIN (FVCO_MIN / 8) |
| #define F_MAX (FVCO_MAX) |
| |
| static long plltv_integer_div(struct sp_pll *clk, unsigned long freq) |
| { |
| /* valid m values: 27M must be divisible by m */ |
| static const u32 m_table[] = { |
| 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32 |
| }; |
| u32 m, n, r; |
| unsigned long fvco, nf; |
| long ret; |
| |
| freq = clamp(freq, F_MIN, F_MAX); |
| |
| /* DIVR 0~3 */ |
| for (r = 0; r <= 3; r++) { |
| fvco = freq << r; |
| if (fvco <= FVCO_MAX) |
| break; |
| } |
| |
| /* DIVM */ |
| for (m = 0; m < ARRAY_SIZE(m_table); m++) { |
| nf = fvco * m_table[m]; |
| n = nf / F_27M; |
| if ((n * F_27M) == nf) |
| break; |
| } |
| if (m >= ARRAY_SIZE(m_table)) { |
| ret = -EINVAL; |
| goto err_not_found; |
| } |
| |
| /* save parameters */ |
| clk->p[SEL_FRA] = 0; |
| clk->p[DIVR] = r; |
| clk->p[DIVN] = n; |
| clk->p[DIVM] = m_table[m]; |
| |
| return freq; |
| |
| err_not_found: |
| pr_err("%s: %s freq:%lu not found a valid setting\n", |
| __func__, clk_hw_get_name(&clk->hw), freq); |
| |
| return ret; |
| } |
| |
| /* parameters for PLLTV fractional divider */ |
| static const u32 pt[][5] = { |
| /* conventional fractional */ |
| { |
| 1, /* factor */ |
| 5, /* 5 * p0 (nint) */ |
| 1, /* 1 * p0 */ |
| F_27M, /* F_27M / p0 */ |
| 1, /* p0 / p2 */ |
| }, |
| /* phase rotation */ |
| { |
| 10, /* factor */ |
| 54, /* 5.4 * p0 (nint) */ |
| 2, /* 0.2 * p0 */ |
| F_27M / 10, /* F_27M / p0 */ |
| 5, /* p0 / p2 */ |
| }, |
| }; |
| |
| static const u32 sdm_mod_vals[] = { 91, 55 }; |
| |
| static long plltv_fractional_div(struct sp_pll *clk, unsigned long freq) |
| { |
| u32 m, r; |
| u32 nint, nfra; |
| u32 df_quotient_min = 210000000; |
| u32 df_remainder_min = 0; |
| unsigned long fvco, nf, f, fout = 0; |
| int sdm, ph; |
| |
| freq = clamp(freq, F_MIN, F_MAX); |
| |
| /* DIVR 0~3 */ |
| for (r = 0; r <= 3; r++) { |
| fvco = freq << r; |
| if (fvco <= FVCO_MAX) |
| break; |
| } |
| f = F_27M >> r; |
| |
| /* PH_SEL */ |
| for (ph = ARRAY_SIZE(pt) - 1; ph >= 0; ph--) { |
| const u32 *pp = pt[ph]; |
| |
| /* SDM_MOD */ |
| for (sdm = 0; sdm < ARRAY_SIZE(sdm_mod_vals); sdm++) { |
| u32 mod = sdm_mod_vals[sdm]; |
| |
| /* DIVM 1~32 */ |
| for (m = 1; m <= 32; m++) { |
| u32 df; /* diff freq */ |
| u32 df_quotient, df_remainder; |
| |
| nf = fvco * m; |
| nint = nf / pp[3]; |
| |
| if (nint < pp[1]) |
| continue; |
| if (nint > pp[1]) |
| break; |
| |
| nfra = (((nf % pp[3]) * mod * pp[4]) + (F_27M / 2)) / F_27M; |
| if (nfra) { |
| u32 df0 = f * (nint + pp[2]) / pp[0]; |
| u32 df1 = f * (mod - nfra) / mod / pp[4]; |
| |
| df = df0 - df1; |
| } else { |
| df = f * (nint) / pp[0]; |
| } |
| |
| df_quotient = df / m; |
| df_remainder = ((df % m) * 1000) / m; |
| |
| if (freq > df_quotient) { |
| df_quotient = freq - df_quotient - 1; |
| df_remainder = 1000 - df_remainder; |
| } else { |
| df_quotient = df_quotient - freq; |
| } |
| |
| if (df_quotient_min > df_quotient || |
| (df_quotient_min == df_quotient && |
| df_remainder_min > df_remainder)) { |
| /* found a closer freq, save parameters */ |
| clk->p[SEL_FRA] = 1; |
| clk->p[SDM_MOD] = sdm; |
| clk->p[PH_SEL] = ph; |
| clk->p[NFRA] = nfra; |
| clk->p[DIVR] = r; |
| clk->p[DIVM] = m; |
| |
| fout = df / m; |
| df_quotient_min = df_quotient; |
| df_remainder_min = df_remainder; |
| } |
| } |
| } |
| } |
| |
| if (!fout) { |
| pr_err("%s: %s freq:%lu not found a valid setting\n", |
| __func__, clk_hw_get_name(&clk->hw), freq); |
| return -EINVAL; |
| } |
| |
| return fout; |
| } |
| |
| static long plltv_div(struct sp_pll *clk, unsigned long freq) |
| { |
| if (freq % 100) |
| return plltv_fractional_div(clk, freq); |
| |
| return plltv_integer_div(clk, freq); |
| } |
| |
| static int plltv_set_rate(struct sp_pll *clk) |
| { |
| unsigned long flags; |
| u32 r0, r1, r2; |
| |
| r0 = BIT(clk->bp_bit + 16); |
| r0 |= HWM_FIELD_PREP(MASK_SEL_FRA, clk->p[SEL_FRA]); |
| r0 |= HWM_FIELD_PREP(MASK_SDM_MOD, clk->p[SDM_MOD]); |
| r0 |= HWM_FIELD_PREP(MASK_PH_SEL, clk->p[PH_SEL]); |
| r0 |= HWM_FIELD_PREP(MASK_NFRA, clk->p[NFRA]); |
| |
| r1 = HWM_FIELD_PREP(MASK_DIVR, clk->p[DIVR]); |
| |
| r2 = HWM_FIELD_PREP(MASK_DIVN, clk->p[DIVN] - 1); |
| r2 |= HWM_FIELD_PREP(MASK_DIVM, clk->p[DIVM] - 1); |
| |
| spin_lock_irqsave(&clk->lock, flags); |
| writel(r0, clk->reg); |
| writel(r1, clk->reg + 4); |
| writel(r2, clk->reg + 8); |
| spin_unlock_irqrestore(&clk->lock, flags); |
| |
| return 0; |
| } |
| |
| /*********************************** PLL_A ***********************************/ |
| |
| /* from Q628_PLLs_REG_setting.xlsx */ |
| static const struct { |
| u32 rate; |
| u32 regs[5]; |
| } pa[] = { |
| { |
| .rate = 135475200, |
| .regs = { |
| 0x4801, |
| 0x02df, |
| 0x248f, |
| 0x0211, |
| 0x33e9 |
| } |
| }, |
| { |
| .rate = 147456000, |
| .regs = { |
| 0x4801, |
| 0x1adf, |
| 0x2490, |
| 0x0349, |
| 0x33e9 |
| } |
| }, |
| { |
| .rate = 196608000, |
| .regs = { |
| 0x4801, |
| 0x42ef, |
| 0x2495, |
| 0x01c6, |
| 0x33e9 |
| } |
| }, |
| }; |
| |
| static int plla_set_rate(struct sp_pll *clk) |
| { |
| const u32 *pp = pa[clk->p[0]].regs; |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&clk->lock, flags); |
| for (i = 0; i < ARRAY_SIZE(pa->regs); i++) |
| writel(0xffff0000 | pp[i], clk->reg + (i * 4)); |
| spin_unlock_irqrestore(&clk->lock, flags); |
| |
| return 0; |
| } |
| |
| static long plla_round_rate(struct sp_pll *clk, unsigned long rate) |
| { |
| int i = ARRAY_SIZE(pa); |
| |
| while (--i) { |
| if (rate >= pa[i].rate) |
| break; |
| } |
| clk->p[0] = i; |
| |
| return pa[i].rate; |
| } |
| |
| /********************************** SP_PLL ***********************************/ |
| |
| static long sp_pll_calc_div(struct sp_pll *clk, unsigned long rate) |
| { |
| u32 fbdiv; |
| u32 max = 1 << clk->div_width; |
| |
| fbdiv = DIV_ROUND_CLOSEST(rate, clk->brate); |
| if (fbdiv > max) |
| fbdiv = max; |
| |
| return fbdiv; |
| } |
| |
| static long sp_pll_round_rate(struct clk_hw *hw, unsigned long rate, |
| unsigned long *prate) |
| { |
| struct sp_pll *clk = to_sp_pll(hw); |
| long ret; |
| |
| if (rate == *prate) { |
| ret = *prate; /* bypass */ |
| } else if (clk->div_width == DIV_A) { |
| ret = plla_round_rate(clk, rate); |
| } else if (clk->div_width == DIV_TV) { |
| ret = plltv_div(clk, rate); |
| if (ret < 0) |
| ret = *prate; |
| } else { |
| ret = sp_pll_calc_div(clk, rate) * clk->brate; |
| } |
| |
| return ret; |
| } |
| |
| static unsigned long sp_pll_recalc_rate(struct clk_hw *hw, |
| unsigned long prate) |
| { |
| struct sp_pll *clk = to_sp_pll(hw); |
| u32 reg = readl(clk->reg); |
| unsigned long ret; |
| |
| if (reg & BIT(clk->bp_bit)) { |
| ret = prate; /* bypass */ |
| } else if (clk->div_width == DIV_A) { |
| ret = pa[clk->p[0]].rate; |
| } else if (clk->div_width == DIV_TV) { |
| u32 m, r, reg2; |
| |
| r = FIELD_GET(MASK_DIVR, readl(clk->reg + 4)); |
| reg2 = readl(clk->reg + 8); |
| m = FIELD_GET(MASK_DIVM, reg2) + 1; |
| |
| if (reg & MASK_SEL_FRA) { |
| /* fractional divider */ |
| u32 sdm = FIELD_GET(MASK_SDM_MOD, reg); |
| u32 ph = FIELD_GET(MASK_PH_SEL, reg); |
| u32 nfra = FIELD_GET(MASK_NFRA, reg); |
| const u32 *pp = pt[ph]; |
| unsigned long r0, r1; |
| |
| ret = prate >> r; |
| r0 = ret * (pp[1] + pp[2]) / pp[0]; |
| r1 = ret * (sdm_mod_vals[sdm] - nfra) / sdm_mod_vals[sdm] / pp[4]; |
| ret = (r0 - r1) / m; |
| } else { |
| /* integer divider */ |
| u32 n = FIELD_GET(MASK_DIVN, reg2) + 1; |
| |
| ret = (prate / m * n) >> r; |
| } |
| } else { |
| u32 fbdiv = ((reg >> clk->div_shift) & ((1 << clk->div_width) - 1)) + 1; |
| |
| ret = clk->brate * fbdiv; |
| } |
| |
| return ret; |
| } |
| |
| static int sp_pll_set_rate(struct clk_hw *hw, unsigned long rate, |
| unsigned long prate) |
| { |
| struct sp_pll *clk = to_sp_pll(hw); |
| unsigned long flags; |
| u32 reg; |
| |
| reg = BIT(clk->bp_bit + 16); /* HIWORD_MASK */ |
| |
| if (rate == prate) { |
| reg |= BIT(clk->bp_bit); /* bypass */ |
| } else if (clk->div_width == DIV_A) { |
| return plla_set_rate(clk); |
| } else if (clk->div_width == DIV_TV) { |
| return plltv_set_rate(clk); |
| } else if (clk->div_width) { |
| u32 fbdiv = sp_pll_calc_div(clk, rate); |
| u32 mask = GENMASK(clk->div_shift + clk->div_width - 1, clk->div_shift); |
| |
| reg |= mask << 16; |
| reg |= ((fbdiv - 1) << clk->div_shift) & mask; |
| } |
| |
| spin_lock_irqsave(&clk->lock, flags); |
| writel(reg, clk->reg); |
| spin_unlock_irqrestore(&clk->lock, flags); |
| |
| return 0; |
| } |
| |
| static int sp_pll_enable(struct clk_hw *hw) |
| { |
| struct sp_pll *clk = to_sp_pll(hw); |
| |
| writel(BIT(clk->pd_bit + 16) | BIT(clk->pd_bit), clk->reg); |
| |
| return 0; |
| } |
| |
| static void sp_pll_disable(struct clk_hw *hw) |
| { |
| struct sp_pll *clk = to_sp_pll(hw); |
| |
| writel(BIT(clk->pd_bit + 16), clk->reg); |
| } |
| |
| static int sp_pll_is_enabled(struct clk_hw *hw) |
| { |
| struct sp_pll *clk = to_sp_pll(hw); |
| |
| return readl(clk->reg) & BIT(clk->pd_bit); |
| } |
| |
| static const struct clk_ops sp_pll_ops = { |
| .enable = sp_pll_enable, |
| .disable = sp_pll_disable, |
| .is_enabled = sp_pll_is_enabled, |
| .round_rate = sp_pll_round_rate, |
| .recalc_rate = sp_pll_recalc_rate, |
| .set_rate = sp_pll_set_rate |
| }; |
| |
| static const struct clk_ops sp_pll_sub_ops = { |
| .enable = sp_pll_enable, |
| .disable = sp_pll_disable, |
| .is_enabled = sp_pll_is_enabled, |
| .recalc_rate = sp_pll_recalc_rate, |
| }; |
| |
| static struct clk_hw *sp_pll_register(struct device *dev, const char *name, |
| const struct clk_parent_data *parent_data, |
| void __iomem *reg, int pd_bit, int bp_bit, |
| unsigned long brate, int shift, int width, |
| unsigned long flags) |
| { |
| struct sp_pll *pll; |
| struct clk_hw *hw; |
| struct clk_init_data initd = { |
| .name = name, |
| .parent_data = parent_data, |
| .ops = (bp_bit >= 0) ? &sp_pll_ops : &sp_pll_sub_ops, |
| .num_parents = 1, |
| .flags = flags, |
| }; |
| int ret; |
| |
| pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL); |
| if (!pll) |
| return ERR_PTR(-ENOMEM); |
| |
| pll->hw.init = &initd; |
| pll->reg = reg; |
| pll->pd_bit = pd_bit; |
| pll->bp_bit = bp_bit; |
| pll->brate = brate; |
| pll->div_shift = shift; |
| pll->div_width = width; |
| spin_lock_init(&pll->lock); |
| |
| hw = &pll->hw; |
| ret = devm_clk_hw_register(dev, hw); |
| if (ret) |
| return ERR_PTR(ret); |
| |
| return hw; |
| } |
| |
| #define PLLA_CTL (pll_base + 0x1c) |
| #define PLLE_CTL (pll_base + 0x30) |
| #define PLLF_CTL (pll_base + 0x34) |
| #define PLLTV_CTL (pll_base + 0x38) |
| |
| static int sp7021_clk_probe(struct platform_device *pdev) |
| { |
| static const u32 sp_clken[] = { |
| 0x67ef, 0x03ff, 0xff03, 0xfff0, 0x0004, /* G0.1~5 */ |
| 0x0000, 0x8000, 0xffff, 0x0040, 0x0000, /* G0.6~10 */ |
| }; |
| static struct clk_parent_data pd_ext, pd_sys, pd_e; |
| struct device *dev = &pdev->dev; |
| void __iomem *clk_base, *pll_base, *sys_base; |
| struct clk_hw_onecell_data *clk_data; |
| struct clk_hw **hws; |
| int i; |
| |
| clk_base = devm_platform_ioremap_resource(pdev, 0); |
| if (IS_ERR(clk_base)) |
| return PTR_ERR(clk_base); |
| pll_base = devm_platform_ioremap_resource(pdev, 1); |
| if (IS_ERR(pll_base)) |
| return PTR_ERR(pll_base); |
| sys_base = devm_platform_ioremap_resource(pdev, 2); |
| if (IS_ERR(sys_base)) |
| return PTR_ERR(sys_base); |
| |
| /* enable default clks */ |
| for (i = 0; i < ARRAY_SIZE(sp_clken); i++) |
| writel((sp_clken[i] << 16) | sp_clken[i], clk_base + i * 4); |
| |
| clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, CLK_MAX), |
| GFP_KERNEL); |
| if (!clk_data) |
| return -ENOMEM; |
| clk_data->num = CLK_MAX; |
| |
| hws = clk_data->hws; |
| pd_ext.index = 0; |
| |
| /* PLLs */ |
| hws[PLL_A] = sp_pll_register(dev, "plla", &pd_ext, PLLA_CTL, |
| 11, 12, 27000000, 0, DIV_A, 0); |
| if (IS_ERR(hws[PLL_A])) |
| return PTR_ERR(hws[PLL_A]); |
| |
| hws[PLL_E] = sp_pll_register(dev, "plle", &pd_ext, PLLE_CTL, |
| 6, 2, 50000000, 0, 0, 0); |
| if (IS_ERR(hws[PLL_E])) |
| return PTR_ERR(hws[PLL_E]); |
| pd_e.hw = hws[PLL_E]; |
| hws[PLL_E_2P5] = sp_pll_register(dev, "plle_2p5", &pd_e, PLLE_CTL, |
| 13, -1, 2500000, 0, 0, 0); |
| if (IS_ERR(hws[PLL_E_2P5])) |
| return PTR_ERR(hws[PLL_E_2P5]); |
| hws[PLL_E_25] = sp_pll_register(dev, "plle_25", &pd_e, PLLE_CTL, |
| 12, -1, 25000000, 0, 0, 0); |
| if (IS_ERR(hws[PLL_E_25])) |
| return PTR_ERR(hws[PLL_E_25]); |
| hws[PLL_E_112P5] = sp_pll_register(dev, "plle_112p5", &pd_e, PLLE_CTL, |
| 11, -1, 112500000, 0, 0, 0); |
| if (IS_ERR(hws[PLL_E_112P5])) |
| return PTR_ERR(hws[PLL_E_112P5]); |
| |
| hws[PLL_F] = sp_pll_register(dev, "pllf", &pd_ext, PLLF_CTL, |
| 0, 10, 13500000, 1, 4, 0); |
| if (IS_ERR(hws[PLL_F])) |
| return PTR_ERR(hws[PLL_F]); |
| |
| hws[PLL_TV] = sp_pll_register(dev, "plltv", &pd_ext, PLLTV_CTL, |
| 0, 15, 27000000, 0, DIV_TV, 0); |
| if (IS_ERR(hws[PLL_TV])) |
| return PTR_ERR(hws[PLL_TV]); |
| hws[PLL_TV_A] = devm_clk_hw_register_divider(dev, "plltv_a", "plltv", 0, |
| PLLTV_CTL + 4, 5, 1, |
| CLK_DIVIDER_POWER_OF_TWO, |
| &to_sp_pll(hws[PLL_TV])->lock); |
| if (IS_ERR(hws[PLL_TV_A])) |
| return PTR_ERR(hws[PLL_TV_A]); |
| |
| /* system clock, should not be disabled */ |
| hws[PLL_SYS] = sp_pll_register(dev, "pllsys", &pd_ext, sys_base, |
| 10, 9, 13500000, 0, 4, CLK_IS_CRITICAL); |
| if (IS_ERR(hws[PLL_SYS])) |
| return PTR_ERR(hws[PLL_SYS]); |
| pd_sys.hw = hws[PLL_SYS]; |
| |
| /* gates */ |
| for (i = 0; i < ARRAY_SIZE(sp_clk_gates); i++) { |
| char name[10]; |
| u32 j = sp_clk_gates[i].reg; |
| struct clk_parent_data *pd = sp_clk_gates[i].ext_parent ? &pd_ext : &pd_sys; |
| |
| sprintf(name, "%02d_0x%02x", i, j); |
| hws[i] = devm_clk_hw_register_gate_parent_data(dev, name, pd, 0, |
| clk_base + (j >> 4) * 4, |
| j & 0x0f, |
| CLK_GATE_HIWORD_MASK, |
| NULL); |
| if (IS_ERR(hws[i])) |
| return PTR_ERR(hws[i]); |
| } |
| |
| return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_data); |
| } |
| |
| static const struct of_device_id sp7021_clk_dt_ids[] = { |
| { .compatible = "sunplus,sp7021-clkc" }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, sp7021_clk_dt_ids); |
| |
| static struct platform_driver sp7021_clk_driver = { |
| .probe = sp7021_clk_probe, |
| .driver = { |
| .name = "sp7021-clk", |
| .of_match_table = sp7021_clk_dt_ids, |
| }, |
| }; |
| module_platform_driver(sp7021_clk_driver); |
| |
| MODULE_AUTHOR("Sunplus Technology"); |
| MODULE_LICENSE("GPL"); |
| MODULE_DESCRIPTION("Clock driver for Sunplus SP7021 SoC"); |
