[PATCH v8 06/10] clk: Add Sunplus SP7021 clock driver
From: Qin Jian
Date: Fri Jan 21 2022 - 02:56:23 EST
Add clock driver for Sunplus SP7021 SoC.
Signed-off-by: Qin Jian <qinjian@xxxxxxxxxxx>
---
Fix the comments from Stephen Boyd.
---
MAINTAINERS | 1 +
drivers/clk/Kconfig | 9 +
drivers/clk/Makefile | 1 +
drivers/clk/clk-sp7021.c | 753 +++++++++++++++++++++++++++++++++++++++
4 files changed, 764 insertions(+)
create mode 100644 drivers/clk/clk-sp7021.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 90ebb823f..5069f552f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2663,6 +2663,7 @@ W: https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
F: Documentation/devicetree/bindings/arm/sunplus,sp7021.yaml
F: Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
F: Documentation/devicetree/bindings/reset/sunplus,reset.yaml
+F: drivers/clk/clk-sp7021.c
F: drivers/reset/reset-sunplus.c
F: include/dt-bindings/clock/sp-sp7021.h
F: include/dt-bindings/reset/sp-sp7021.h
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index c5b3dc973..91656de22 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -334,6 +334,15 @@ config COMMON_CLK_VC5
This driver supports the IDT VersaClock 5 and VersaClock 6
programmable clock generators.
+config COMMON_CLK_SP7021
+ bool "Clock driver for Sunplus SP7021 SoC"
+ default SOC_SP7021
+ help
+ This driver supports the Sunplus SP7021 SoC clocks.
+ It implements SP7021 PLLs/gate.
+ Not all features of the PLL are currently supported
+ by the driver.
+
config COMMON_CLK_STM32MP157
def_bool COMMON_CLK && MACH_STM32MP157
help
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index e42312121..f15bb5070 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_COMMON_CLK_SI5351) += clk-si5351.o
obj-$(CONFIG_COMMON_CLK_SI514) += clk-si514.o
obj-$(CONFIG_COMMON_CLK_SI544) += clk-si544.o
obj-$(CONFIG_COMMON_CLK_SI570) += clk-si570.o
+obj-$(CONFIG_COMMON_CLK_SP7021) += clk-sp7021.o
obj-$(CONFIG_COMMON_CLK_STM32F) += clk-stm32f4.o
obj-$(CONFIG_COMMON_CLK_STM32H7) += clk-stm32h7.o
obj-$(CONFIG_COMMON_CLK_STM32MP157) += clk-stm32mp1.o
diff --git a/drivers/clk/clk-sp7021.c b/drivers/clk/clk-sp7021.c
new file mode 100644
index 000000000..8a3e28a2a
--- /dev/null
+++ b/drivers/clk/clk-sp7021.c
@@ -0,0 +1,753 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (C) Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+//#define DEBUG
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/of.h>
+#include <linux/of_address.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/sp-sp7021.h>
+
+#define REG(i) (pll_regs + (i) * 4)
+
+#define PLLA_CTL REG(7)
+#define PLLE_CTL REG(12)
+#define PLLF_CTL REG(13)
+#define PLLTV_CTL REG(14)
+#define PLLSYS_CTL REG(26)
+
+/* 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) \
+({ \
+ u32 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)
+
+#define clk_regs (sp_clk_base + 0x000) /* G0 ~ CLKEN */
+#define pll_regs (sp_clk_base + 0x200) /* G4 ~ PLL */
+static void __iomem *sp_clk_base;
+static struct clk_hw_onecell_data *sp_clk_data;
+
+#define F_CRITICAL BIT(31) /* clock is critical */
+#define F_EXTCLK BIT(16) /* parent clock is EXTCLK */
+const struct clk_parent_data parents[] = {
+ { .name = "pllsys" },
+ { .name = "extclk" },
+ { .name = "plle" },
+};
+
+#define PD_PLLSYS (&parents[0])
+#define PD_EXTCLK (&parents[1])
+#define PD_PLLE (&parents[2])
+
+static const u32 gates[] = {
+ CLK_SYSTEM | F_CRITICAL,
+ CLK_RTC,
+ CLK_IOCTL | F_CRITICAL,
+ CLK_IOP | F_CRITICAL,
+ CLK_OTPRX,
+ CLK_NOC,
+ CLK_BR,
+ CLK_RBUS_L00 | F_CRITICAL,
+ CLK_SPIFL,
+ CLK_SDCTRL0 | F_CRITICAL,
+ CLK_PERI0 | F_EXTCLK,
+ CLK_A926 | F_CRITICAL,
+ CLK_UMCTL2 | F_CRITICAL,
+ CLK_PERI1 | F_EXTCLK,
+
+ CLK_DDR_PHY0 | F_CRITICAL,
+ CLK_ACHIP | F_CRITICAL,
+ CLK_STC0,
+ CLK_STC_AV0,
+ CLK_STC_AV1,
+ CLK_STC_AV2,
+ CLK_UA0 | F_EXTCLK,
+ CLK_UA1 | F_EXTCLK,
+ CLK_UA2 | F_EXTCLK,
+ CLK_UA3 | F_EXTCLK,
+ CLK_UA4 | F_EXTCLK,
+ CLK_HWUA | F_EXTCLK,
+ CLK_DDC0,
+ CLK_UADMA | F_EXTCLK,
+
+ CLK_CBDMA0,
+ CLK_CBDMA1,
+ CLK_SPI_COMBO_0,
+ CLK_SPI_COMBO_1,
+ CLK_SPI_COMBO_2,
+ CLK_SPI_COMBO_3,
+ CLK_AUD,
+ CLK_USBC0,
+ CLK_USBC1,
+ CLK_UPHY0,
+ CLK_UPHY1,
+
+ CLK_I2CM0,
+ CLK_I2CM1,
+ CLK_I2CM2,
+ CLK_I2CM3,
+ CLK_PMC,
+ CLK_CARD_CTL0,
+ CLK_CARD_CTL1,
+
+ CLK_CARD_CTL4,
+ CLK_BCH,
+ CLK_DDFCH,
+ CLK_CSIIW0,
+ CLK_CSIIW1,
+ CLK_MIPICSI0,
+ CLK_MIPICSI1,
+
+ CLK_HDMI_TX,
+ CLK_VPOST,
+
+ CLK_TGEN,
+ CLK_DMIX,
+ CLK_TCON,
+ CLK_INTERRUPT | F_CRITICAL,
+
+ CLK_RGST | F_CRITICAL,
+ CLK_GPIO,
+ CLK_RBUS_TOP | F_CRITICAL,
+
+ CLK_MAILBOX,
+ CLK_SPIND,
+ CLK_I2C2CBUS,
+ CLK_SEC,
+ CLK_GPOST0,
+ CLK_DVE,
+
+ CLK_OSD0,
+ CLK_DISP_PWM,
+ CLK_UADBG,
+ CLK_DUMMY_MASTER,
+ CLK_FIO_CTL,
+ CLK_FPGA,
+ CLK_L2SW,
+ CLK_ICM,
+ CLK_AXI_GLOBAL,
+};
+
+static DEFINE_SPINLOCK(plla_lock);
+static DEFINE_SPINLOCK(plle_lock);
+static DEFINE_SPINLOCK(pllf_lock);
+static DEFINE_SPINLOCK(pllsys_lock);
+static DEFINE_SPINLOCK(plltv_lock);
+
+#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, 0 means end */
+ static const u32 m_table[] = {
+ 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 0
+ };
+ u32 m, n, r;
+ unsigned long fvco, nf;
+
+ /* check freq */
+ if (freq < F_MIN) {
+ pr_warn("%s: %s freq:%lu < F_MIN:%lu, round up\n",
+ __func__, clk_hw_get_name(&clk->hw), freq, F_MIN);
+ freq = F_MIN;
+ } else if (freq > F_MAX) {
+ pr_warn("%s: %s freq:%lu > F_MAX:%lu, round down\n",
+ __func__, clk_hw_get_name(&clk->hw), freq, F_MAX);
+ freq = F_MAX;
+ }
+
+ /* DIVR 0~3 */
+ for (r = 0; r <= 3; r++) {
+ fvco = freq << r;
+ if (fvco <= FVCO_MAX)
+ break;
+ }
+
+ /* DIVM */
+ for (m = 0; m_table[m]; m++) {
+ nf = fvco * m_table[m];
+ n = nf / F_27M;
+ if ((n * F_27M) == nf)
+ break;
+ }
+ m = m_table[m];
+
+ if (!m) {
+ pr_err("%s: %s freq:%lu not found a valid setting\n",
+ __func__, clk_hw_get_name(&clk->hw), freq);
+ return -EINVAL;
+ }
+
+ /* save parameters */
+ clk->p[SEL_FRA] = 0;
+ clk->p[DIVR] = r;
+ clk->p[DIVN] = n;
+ clk->p[DIVM] = m;
+
+ return freq;
+}
+
+/* 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 mods[] = { 91, 55 }; /* SDM_MOD mod values */
+
+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;
+
+ /* check freq */
+ if (freq < F_MIN) {
+ pr_warn("%s: %s freq:%lu < F_MIN:%lu, round up\n",
+ __func__, clk_hw_get_name(&clk->hw), freq, F_MIN);
+ freq = F_MIN;
+ } else if (freq > F_MAX) {
+ pr_warn("%s: %s freq:%lu > F_MAX:%lu, round down\n",
+ __func__, clk_hw_get_name(&clk->hw), freq, F_MAX);
+ freq = 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 1/0 */
+ for (ph = 1; ph >= 0; ph--) {
+ const u32 *pp = pt[ph];
+ u32 ms = 1;
+
+ /* SDM_MOD 0/1 */
+ for (sdm = 0; sdm <= 1; sdm++) {
+ u32 mod = mods[sdm];
+
+ /* DIVM 1~32 */
+ for (m = ms; m <= 32; m++) {
+ u32 df; /* diff freq */
+ u32 df_quotient = 0, df_remainder = 0;
+
+ 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)
+ df = (f * (nint + pp[2]) / pp[0]) -
+ (f * (mod - nfra) / mod / pp[4]);
+ 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 void plltv_set_rate(struct sp_pll *clk)
+{
+ u32 reg;
+
+ reg = HWM_FIELD_PREP(MASK_SEL_FRA, clk->p[SEL_FRA]);
+ reg |= HWM_FIELD_PREP(MASK_SDM_MOD, clk->p[SDM_MOD]);
+ reg |= HWM_FIELD_PREP(MASK_PH_SEL, clk->p[PH_SEL]);
+ reg |= HWM_FIELD_PREP(MASK_NFRA, clk->p[NFRA]);
+ writel(reg, clk->reg);
+
+ reg = HWM_FIELD_PREP(MASK_DIVR, clk->p[DIVR]);
+ writel(reg, clk->reg + 4);
+
+ reg = HWM_FIELD_PREP(MASK_DIVN, clk->p[DIVN] - 1);
+ reg |= HWM_FIELD_PREP(MASK_DIVM, clk->p[DIVM] - 1);
+ writel(reg, clk->reg + 8);
+}
+
+/*********************************** 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 void plla_set_rate(struct sp_pll *clk)
+{
+ const u32 *pp = pa[clk->p[0]].regs;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pa->regs); i++)
+ writel(0xffff0000 | pp[i], clk->reg + (i * 4));
+}
+
+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 & BIT(1)) { /* 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];
+
+ ret = prate >> r;
+ ret = (ret * (pp[1] + pp[2]) / pp[0]) -
+ (ret * (mods[sdm] - nfra) / mods[sdm] / pp[4]);
+ ret /= 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;
+
+ spin_lock_irqsave(clk->lock, flags);
+
+ reg = BIT(clk->bp_bit + 16); /* HIWORD_MASK */
+
+ if (rate == prate)
+ reg |= BIT(clk->bp_bit); /* bypass */
+ else if (clk->div_width == DIV_A)
+ plla_set_rate(clk);
+ else if (clk->div_width == DIV_TV)
+ 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) | (((fbdiv - 1) << clk->div_shift) & mask);
+ }
+
+ 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);
+ unsigned long flags;
+
+ spin_lock_irqsave(clk->lock, flags);
+ writel(BIT(clk->pd_bit + 16) | BIT(clk->pd_bit), clk->reg); /* power up */
+ spin_unlock_irqrestore(clk->lock, flags);
+
+ return 0;
+}
+
+static void sp_pll_disable(struct clk_hw *hw)
+{
+ struct sp_pll *clk = to_sp_pll(hw);
+ unsigned long flags;
+
+ spin_lock_irqsave(clk->lock, flags);
+ writel(BIT(clk->pd_bit + 16), clk->reg); /* power down */
+ spin_unlock_irqrestore(clk->lock, flags);
+}
+
+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,
+};
+
+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,
+ spinlock_t *lock)
+{
+ 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,
+ /* system clock, should not be disabled */
+ .flags = (reg == PLLSYS_CTL) ? CLK_IS_CRITICAL : 0,
+ };
+ 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;
+ pll->lock = lock;
+
+ hw = &pll->hw;
+ ret = devm_clk_hw_register(dev, hw);
+ if (ret) {
+ kfree(pll);
+ hw = ERR_PTR(ret);
+ } else {
+ pr_debug("%-20s%lu\n", name, clk_hw_get_rate(hw));
+ devm_clk_hw_register_clkdev(dev, hw, NULL, name);
+ }
+
+ return hw;
+}
+
+static int sp7021_clk_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ int i, ret;
+ struct clk_hw **hws;
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ sp_clk_base = devm_ioremap(dev, res->start, resource_size(res));
+ if (WARN_ON(!sp_clk_base))
+ return -ENXIO;
+
+ sp_clk_data = devm_kzalloc(dev, struct_size(sp_clk_data, hws, CLK_MAX),
+ GFP_KERNEL);
+ if (!sp_clk_data)
+ return -ENOMEM;
+
+ hws = sp_clk_data->hws;
+
+ /* PLL_A */
+ hws[PLL_A] = sp_pll_register(dev, "plla", PD_EXTCLK, PLLA_CTL,
+ 11, 12, 27000000, 0, DIV_A, &plla_lock);
+ if (IS_ERR(hws[PLL_A]))
+ return PTR_ERR(hws[PLL_A]);
+
+ /* PLL_E */
+ hws[PLL_E] = sp_pll_register(dev, "plle", PD_EXTCLK, PLLE_CTL,
+ 6, 2, 50000000, 0, 0, &plle_lock);
+ if (IS_ERR(hws[PLL_E]))
+ return PTR_ERR(hws[PLL_E]);
+ hws[PLL_E_2P5] = sp_pll_register(dev, "plle_2p5", PD_PLLE, PLLE_CTL,
+ 13, -1, 2500000, 0, 0, &plle_lock);
+ 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_PLLE, PLLE_CTL,
+ 12, -1, 25000000, 0, 0, &plle_lock);
+ 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_PLLE, PLLE_CTL,
+ 11, -1, 112500000, 0, 0, &plle_lock);
+ if (IS_ERR(hws[PLL_E_112P5]))
+ return PTR_ERR(hws[PLL_E_112P5]);
+
+ /* PLL_F */
+ hws[PLL_F] = sp_pll_register(dev, "pllf", PD_EXTCLK, PLLF_CTL,
+ 0, 10, 13500000, 1, 4, &pllf_lock);
+ if (IS_ERR(hws[PLL_F]))
+ return PTR_ERR(hws[PLL_F]);
+
+ /* PLL_TV */
+ hws[PLL_TV] = sp_pll_register(dev, "plltv", PD_EXTCLK, PLLTV_CTL,
+ 0, 15, 27000000, 0, DIV_TV, &plltv_lock);
+ 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,
+ &plltv_lock);
+ if (IS_ERR(hws[PLL_TV_A]))
+ return PTR_ERR(hws[PLL_TV_A]);
+ ret = devm_clk_hw_register_clkdev(dev, hws[PLL_TV_A], NULL, "plltv_a");
+ if (ret)
+ return ret;
+
+ /* PLL_SYS */
+ hws[PLL_SYS] = sp_pll_register(dev, "pllsys", PD_EXTCLK, PLLSYS_CTL,
+ 10, 9, 13500000, 0, 4, &pllsys_lock);
+ if (IS_ERR(hws[PLL_SYS]))
+ return PTR_ERR(hws[PLL_SYS]);
+
+ /* gates */
+ for (i = 0; i < ARRAY_SIZE(gates); i++) {
+ u32 f = gates[i];
+ const char *parent_name = parents[!!(f & F_EXTCLK)].name;
+ bool critical = f & F_CRITICAL;
+ int j = f & 0xffff;
+ char s[10];
+
+ sprintf(s, "clken%02x", j);
+ hws[j] = clk_hw_register_gate(dev, s, parent_name,
+ critical ? CLK_IS_CRITICAL : 0,
+ clk_regs + (j >> 4) * 4,
+ j & 0x0f,
+ CLK_GATE_HIWORD_MASK, NULL);
+ if (IS_ERR(hws[j]))
+ return PTR_ERR(hws[j]);
+ }
+
+ sp_clk_data->num = CLK_MAX;
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, sp_clk_data);
+}
+
+static const struct of_device_id sp7021_clk_dt_ids[] = {
+ { .compatible = "sunplus,sp7021-clkc", },
+ { }
+};
+
+static struct platform_driver sp7021_clk_driver = {
+ .probe = sp7021_clk_probe,
+ .driver = {
+ .name = "sp7021-clk",
+ .of_match_table = sp7021_clk_dt_ids,
+ },
+};
+builtin_platform_driver(sp7021_clk_driver);
--
2.33.1