[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/clk/rockchip/clk-pll.c b/src/kernel/linux/v4.14/drivers/clk/rockchip/clk-pll.c
new file mode 100644
index 0000000..dd0433d
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/clk/rockchip/clk-pll.c
@@ -0,0 +1,980 @@
+/*
+ * Copyright (c) 2014 MundoReader S.L.
+ * Author: Heiko Stuebner <heiko@sntech.de>
+ *
+ * Copyright (c) 2015 Rockchip Electronics Co. Ltd.
+ * Author: Xing Zheng <zhengxing@rock-chips.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <asm/div64.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+#include <linux/clk.h>
+#include "clk.h"
+
+#define PLL_MODE_MASK 0x3
+#define PLL_MODE_SLOW 0x0
+#define PLL_MODE_NORM 0x1
+#define PLL_MODE_DEEP 0x2
+#define PLL_RK3328_MODE_MASK 0x1
+
+struct rockchip_clk_pll {
+ struct clk_hw hw;
+
+ struct clk_mux pll_mux;
+ const struct clk_ops *pll_mux_ops;
+
+ struct notifier_block clk_nb;
+
+ void __iomem *reg_base;
+ int lock_offset;
+ unsigned int lock_shift;
+ enum rockchip_pll_type type;
+ u8 flags;
+ const struct rockchip_pll_rate_table *rate_table;
+ unsigned int rate_count;
+ spinlock_t *lock;
+
+ struct rockchip_clk_provider *ctx;
+};
+
+#define to_rockchip_clk_pll(_hw) container_of(_hw, struct rockchip_clk_pll, hw)
+#define to_rockchip_clk_pll_nb(nb) \
+ container_of(nb, struct rockchip_clk_pll, clk_nb)
+
+static const struct rockchip_pll_rate_table *rockchip_get_pll_settings(
+ struct rockchip_clk_pll *pll, unsigned long rate)
+{
+ const struct rockchip_pll_rate_table *rate_table = pll->rate_table;
+ int i;
+
+ for (i = 0; i < pll->rate_count; i++) {
+ if (rate == rate_table[i].rate)
+ return &rate_table[i];
+ }
+
+ return NULL;
+}
+
+static long rockchip_pll_round_rate(struct clk_hw *hw,
+ unsigned long drate, unsigned long *prate)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ const struct rockchip_pll_rate_table *rate_table = pll->rate_table;
+ int i;
+
+ /* Assumming rate_table is in descending order */
+ for (i = 0; i < pll->rate_count; i++) {
+ if (drate >= rate_table[i].rate)
+ return rate_table[i].rate;
+ }
+
+ /* return minimum supported value */
+ return rate_table[i - 1].rate;
+}
+
+/*
+ * Wait for the pll to reach the locked state.
+ * The calling set_rate function is responsible for making sure the
+ * grf regmap is available.
+ */
+static int rockchip_pll_wait_lock(struct rockchip_clk_pll *pll)
+{
+ struct regmap *grf = pll->ctx->grf;
+ unsigned int val;
+ int delay = 24000000, ret;
+
+ while (delay > 0) {
+ ret = regmap_read(grf, pll->lock_offset, &val);
+ if (ret) {
+ pr_err("%s: failed to read pll lock status: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ if (val & BIT(pll->lock_shift))
+ return 0;
+ delay--;
+ }
+
+ pr_err("%s: timeout waiting for pll to lock\n", __func__);
+ return -ETIMEDOUT;
+}
+
+/**
+ * PLL used in RK3036
+ */
+
+#define RK3036_PLLCON(i) (i * 0x4)
+#define RK3036_PLLCON0_FBDIV_MASK 0xfff
+#define RK3036_PLLCON0_FBDIV_SHIFT 0
+#define RK3036_PLLCON0_POSTDIV1_MASK 0x7
+#define RK3036_PLLCON0_POSTDIV1_SHIFT 12
+#define RK3036_PLLCON1_REFDIV_MASK 0x3f
+#define RK3036_PLLCON1_REFDIV_SHIFT 0
+#define RK3036_PLLCON1_POSTDIV2_MASK 0x7
+#define RK3036_PLLCON1_POSTDIV2_SHIFT 6
+#define RK3036_PLLCON1_DSMPD_MASK 0x1
+#define RK3036_PLLCON1_DSMPD_SHIFT 12
+#define RK3036_PLLCON2_FRAC_MASK 0xffffff
+#define RK3036_PLLCON2_FRAC_SHIFT 0
+
+#define RK3036_PLLCON1_PWRDOWN (1 << 13)
+
+static void rockchip_rk3036_pll_get_params(struct rockchip_clk_pll *pll,
+ struct rockchip_pll_rate_table *rate)
+{
+ u32 pllcon;
+
+ pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(0));
+ rate->fbdiv = ((pllcon >> RK3036_PLLCON0_FBDIV_SHIFT)
+ & RK3036_PLLCON0_FBDIV_MASK);
+ rate->postdiv1 = ((pllcon >> RK3036_PLLCON0_POSTDIV1_SHIFT)
+ & RK3036_PLLCON0_POSTDIV1_MASK);
+
+ pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(1));
+ rate->refdiv = ((pllcon >> RK3036_PLLCON1_REFDIV_SHIFT)
+ & RK3036_PLLCON1_REFDIV_MASK);
+ rate->postdiv2 = ((pllcon >> RK3036_PLLCON1_POSTDIV2_SHIFT)
+ & RK3036_PLLCON1_POSTDIV2_MASK);
+ rate->dsmpd = ((pllcon >> RK3036_PLLCON1_DSMPD_SHIFT)
+ & RK3036_PLLCON1_DSMPD_MASK);
+
+ pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(2));
+ rate->frac = ((pllcon >> RK3036_PLLCON2_FRAC_SHIFT)
+ & RK3036_PLLCON2_FRAC_MASK);
+}
+
+static unsigned long rockchip_rk3036_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long prate)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ struct rockchip_pll_rate_table cur;
+ u64 rate64 = prate;
+
+ rockchip_rk3036_pll_get_params(pll, &cur);
+
+ rate64 *= cur.fbdiv;
+ do_div(rate64, cur.refdiv);
+
+ if (cur.dsmpd == 0) {
+ /* fractional mode */
+ u64 frac_rate64 = prate * cur.frac;
+
+ do_div(frac_rate64, cur.refdiv);
+ rate64 += frac_rate64 >> 24;
+ }
+
+ do_div(rate64, cur.postdiv1);
+ do_div(rate64, cur.postdiv2);
+
+ return (unsigned long)rate64;
+}
+
+static int rockchip_rk3036_pll_set_params(struct rockchip_clk_pll *pll,
+ const struct rockchip_pll_rate_table *rate)
+{
+ const struct clk_ops *pll_mux_ops = pll->pll_mux_ops;
+ struct clk_mux *pll_mux = &pll->pll_mux;
+ struct rockchip_pll_rate_table cur;
+ u32 pllcon;
+ int rate_change_remuxed = 0;
+ int cur_parent;
+ int ret;
+
+ pr_debug("%s: rate settings for %lu fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
+ __func__, rate->rate, rate->fbdiv, rate->postdiv1, rate->refdiv,
+ rate->postdiv2, rate->dsmpd, rate->frac);
+
+ rockchip_rk3036_pll_get_params(pll, &cur);
+ cur.rate = 0;
+
+ cur_parent = pll_mux_ops->get_parent(&pll_mux->hw);
+ if (cur_parent == PLL_MODE_NORM) {
+ pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_SLOW);
+ rate_change_remuxed = 1;
+ }
+
+ /* update pll values */
+ writel_relaxed(HIWORD_UPDATE(rate->fbdiv, RK3036_PLLCON0_FBDIV_MASK,
+ RK3036_PLLCON0_FBDIV_SHIFT) |
+ HIWORD_UPDATE(rate->postdiv1, RK3036_PLLCON0_POSTDIV1_MASK,
+ RK3036_PLLCON0_POSTDIV1_SHIFT),
+ pll->reg_base + RK3036_PLLCON(0));
+
+ writel_relaxed(HIWORD_UPDATE(rate->refdiv, RK3036_PLLCON1_REFDIV_MASK,
+ RK3036_PLLCON1_REFDIV_SHIFT) |
+ HIWORD_UPDATE(rate->postdiv2, RK3036_PLLCON1_POSTDIV2_MASK,
+ RK3036_PLLCON1_POSTDIV2_SHIFT) |
+ HIWORD_UPDATE(rate->dsmpd, RK3036_PLLCON1_DSMPD_MASK,
+ RK3036_PLLCON1_DSMPD_SHIFT),
+ pll->reg_base + RK3036_PLLCON(1));
+
+ /* GPLL CON2 is not HIWORD_MASK */
+ pllcon = readl_relaxed(pll->reg_base + RK3036_PLLCON(2));
+ pllcon &= ~(RK3036_PLLCON2_FRAC_MASK << RK3036_PLLCON2_FRAC_SHIFT);
+ pllcon |= rate->frac << RK3036_PLLCON2_FRAC_SHIFT;
+ writel_relaxed(pllcon, pll->reg_base + RK3036_PLLCON(2));
+
+ /* wait for the pll to lock */
+ ret = rockchip_pll_wait_lock(pll);
+ if (ret) {
+ pr_warn("%s: pll update unsuccessful, trying to restore old params\n",
+ __func__);
+ rockchip_rk3036_pll_set_params(pll, &cur);
+ }
+
+ if (rate_change_remuxed)
+ pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_NORM);
+
+ return ret;
+}
+
+static int rockchip_rk3036_pll_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ const struct rockchip_pll_rate_table *rate;
+
+ pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
+ __func__, __clk_get_name(hw->clk), drate, prate);
+
+ /* Get required rate settings from table */
+ rate = rockchip_get_pll_settings(pll, drate);
+ if (!rate) {
+ pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
+ drate, __clk_get_name(hw->clk));
+ return -EINVAL;
+ }
+
+ return rockchip_rk3036_pll_set_params(pll, rate);
+}
+
+static int rockchip_rk3036_pll_enable(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+
+ writel(HIWORD_UPDATE(0, RK3036_PLLCON1_PWRDOWN, 0),
+ pll->reg_base + RK3036_PLLCON(1));
+ rockchip_pll_wait_lock(pll);
+
+ return 0;
+}
+
+static void rockchip_rk3036_pll_disable(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+
+ writel(HIWORD_UPDATE(RK3036_PLLCON1_PWRDOWN,
+ RK3036_PLLCON1_PWRDOWN, 0),
+ pll->reg_base + RK3036_PLLCON(1));
+}
+
+static int rockchip_rk3036_pll_is_enabled(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ u32 pllcon = readl(pll->reg_base + RK3036_PLLCON(1));
+
+ return !(pllcon & RK3036_PLLCON1_PWRDOWN);
+}
+
+static void rockchip_rk3036_pll_init(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ const struct rockchip_pll_rate_table *rate;
+ struct rockchip_pll_rate_table cur;
+ unsigned long drate;
+
+ if (!(pll->flags & ROCKCHIP_PLL_SYNC_RATE))
+ return;
+
+ drate = clk_hw_get_rate(hw);
+ rate = rockchip_get_pll_settings(pll, drate);
+
+ /* when no rate setting for the current rate, rely on clk_set_rate */
+ if (!rate)
+ return;
+
+ rockchip_rk3036_pll_get_params(pll, &cur);
+
+ pr_debug("%s: pll %s@%lu: Hz\n", __func__, __clk_get_name(hw->clk),
+ drate);
+ pr_debug("old - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
+ cur.fbdiv, cur.postdiv1, cur.refdiv, cur.postdiv2,
+ cur.dsmpd, cur.frac);
+ pr_debug("new - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
+ rate->fbdiv, rate->postdiv1, rate->refdiv, rate->postdiv2,
+ rate->dsmpd, rate->frac);
+
+ if (rate->fbdiv != cur.fbdiv || rate->postdiv1 != cur.postdiv1 ||
+ rate->refdiv != cur.refdiv || rate->postdiv2 != cur.postdiv2 ||
+ rate->dsmpd != cur.dsmpd ||
+ (!cur.dsmpd && (rate->frac != cur.frac))) {
+ struct clk *parent = clk_get_parent(hw->clk);
+
+ if (!parent) {
+ pr_warn("%s: parent of %s not available\n",
+ __func__, __clk_get_name(hw->clk));
+ return;
+ }
+
+ pr_debug("%s: pll %s: rate params do not match rate table, adjusting\n",
+ __func__, __clk_get_name(hw->clk));
+ rockchip_rk3036_pll_set_params(pll, rate);
+ }
+}
+
+static const struct clk_ops rockchip_rk3036_pll_clk_norate_ops = {
+ .recalc_rate = rockchip_rk3036_pll_recalc_rate,
+ .enable = rockchip_rk3036_pll_enable,
+ .disable = rockchip_rk3036_pll_disable,
+ .is_enabled = rockchip_rk3036_pll_is_enabled,
+};
+
+static const struct clk_ops rockchip_rk3036_pll_clk_ops = {
+ .recalc_rate = rockchip_rk3036_pll_recalc_rate,
+ .round_rate = rockchip_pll_round_rate,
+ .set_rate = rockchip_rk3036_pll_set_rate,
+ .enable = rockchip_rk3036_pll_enable,
+ .disable = rockchip_rk3036_pll_disable,
+ .is_enabled = rockchip_rk3036_pll_is_enabled,
+ .init = rockchip_rk3036_pll_init,
+};
+
+/**
+ * PLL used in RK3066, RK3188 and RK3288
+ */
+
+#define RK3066_PLL_RESET_DELAY(nr) ((nr * 500) / 24 + 1)
+
+#define RK3066_PLLCON(i) (i * 0x4)
+#define RK3066_PLLCON0_OD_MASK 0xf
+#define RK3066_PLLCON0_OD_SHIFT 0
+#define RK3066_PLLCON0_NR_MASK 0x3f
+#define RK3066_PLLCON0_NR_SHIFT 8
+#define RK3066_PLLCON1_NF_MASK 0x1fff
+#define RK3066_PLLCON1_NF_SHIFT 0
+#define RK3066_PLLCON2_NB_MASK 0xfff
+#define RK3066_PLLCON2_NB_SHIFT 0
+#define RK3066_PLLCON3_RESET (1 << 5)
+#define RK3066_PLLCON3_PWRDOWN (1 << 1)
+#define RK3066_PLLCON3_BYPASS (1 << 0)
+
+static void rockchip_rk3066_pll_get_params(struct rockchip_clk_pll *pll,
+ struct rockchip_pll_rate_table *rate)
+{
+ u32 pllcon;
+
+ pllcon = readl_relaxed(pll->reg_base + RK3066_PLLCON(0));
+ rate->nr = ((pllcon >> RK3066_PLLCON0_NR_SHIFT)
+ & RK3066_PLLCON0_NR_MASK) + 1;
+ rate->no = ((pllcon >> RK3066_PLLCON0_OD_SHIFT)
+ & RK3066_PLLCON0_OD_MASK) + 1;
+
+ pllcon = readl_relaxed(pll->reg_base + RK3066_PLLCON(1));
+ rate->nf = ((pllcon >> RK3066_PLLCON1_NF_SHIFT)
+ & RK3066_PLLCON1_NF_MASK) + 1;
+
+ pllcon = readl_relaxed(pll->reg_base + RK3066_PLLCON(2));
+ rate->nb = ((pllcon >> RK3066_PLLCON2_NB_SHIFT)
+ & RK3066_PLLCON2_NB_MASK) + 1;
+}
+
+static unsigned long rockchip_rk3066_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long prate)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ struct rockchip_pll_rate_table cur;
+ u64 rate64 = prate;
+ u32 pllcon;
+
+ pllcon = readl_relaxed(pll->reg_base + RK3066_PLLCON(3));
+ if (pllcon & RK3066_PLLCON3_BYPASS) {
+ pr_debug("%s: pll %s is bypassed\n", __func__,
+ clk_hw_get_name(hw));
+ return prate;
+ }
+
+ rockchip_rk3066_pll_get_params(pll, &cur);
+
+ rate64 *= cur.nf;
+ do_div(rate64, cur.nr);
+ do_div(rate64, cur.no);
+
+ return (unsigned long)rate64;
+}
+
+static int rockchip_rk3066_pll_set_params(struct rockchip_clk_pll *pll,
+ const struct rockchip_pll_rate_table *rate)
+{
+ const struct clk_ops *pll_mux_ops = pll->pll_mux_ops;
+ struct clk_mux *pll_mux = &pll->pll_mux;
+ struct rockchip_pll_rate_table cur;
+ int rate_change_remuxed = 0;
+ int cur_parent;
+ int ret;
+
+ pr_debug("%s: rate settings for %lu (nr, no, nf): (%d, %d, %d)\n",
+ __func__, rate->rate, rate->nr, rate->no, rate->nf);
+
+ rockchip_rk3066_pll_get_params(pll, &cur);
+ cur.rate = 0;
+
+ cur_parent = pll_mux_ops->get_parent(&pll_mux->hw);
+ if (cur_parent == PLL_MODE_NORM) {
+ pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_SLOW);
+ rate_change_remuxed = 1;
+ }
+
+ /* enter reset mode */
+ writel(HIWORD_UPDATE(RK3066_PLLCON3_RESET, RK3066_PLLCON3_RESET, 0),
+ pll->reg_base + RK3066_PLLCON(3));
+
+ /* update pll values */
+ writel(HIWORD_UPDATE(rate->nr - 1, RK3066_PLLCON0_NR_MASK,
+ RK3066_PLLCON0_NR_SHIFT) |
+ HIWORD_UPDATE(rate->no - 1, RK3066_PLLCON0_OD_MASK,
+ RK3066_PLLCON0_OD_SHIFT),
+ pll->reg_base + RK3066_PLLCON(0));
+
+ writel_relaxed(HIWORD_UPDATE(rate->nf - 1, RK3066_PLLCON1_NF_MASK,
+ RK3066_PLLCON1_NF_SHIFT),
+ pll->reg_base + RK3066_PLLCON(1));
+ writel_relaxed(HIWORD_UPDATE(rate->nb - 1, RK3066_PLLCON2_NB_MASK,
+ RK3066_PLLCON2_NB_SHIFT),
+ pll->reg_base + RK3066_PLLCON(2));
+
+ /* leave reset and wait the reset_delay */
+ writel(HIWORD_UPDATE(0, RK3066_PLLCON3_RESET, 0),
+ pll->reg_base + RK3066_PLLCON(3));
+ udelay(RK3066_PLL_RESET_DELAY(rate->nr));
+
+ /* wait for the pll to lock */
+ ret = rockchip_pll_wait_lock(pll);
+ if (ret) {
+ pr_warn("%s: pll update unsuccessful, trying to restore old params\n",
+ __func__);
+ rockchip_rk3066_pll_set_params(pll, &cur);
+ }
+
+ if (rate_change_remuxed)
+ pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_NORM);
+
+ return ret;
+}
+
+static int rockchip_rk3066_pll_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ const struct rockchip_pll_rate_table *rate;
+
+ pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
+ __func__, clk_hw_get_name(hw), drate, prate);
+
+ /* Get required rate settings from table */
+ rate = rockchip_get_pll_settings(pll, drate);
+ if (!rate) {
+ pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
+ drate, clk_hw_get_name(hw));
+ return -EINVAL;
+ }
+
+ return rockchip_rk3066_pll_set_params(pll, rate);
+}
+
+static int rockchip_rk3066_pll_enable(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+
+ writel(HIWORD_UPDATE(0, RK3066_PLLCON3_PWRDOWN, 0),
+ pll->reg_base + RK3066_PLLCON(3));
+ rockchip_pll_wait_lock(pll);
+
+ return 0;
+}
+
+static void rockchip_rk3066_pll_disable(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+
+ writel(HIWORD_UPDATE(RK3066_PLLCON3_PWRDOWN,
+ RK3066_PLLCON3_PWRDOWN, 0),
+ pll->reg_base + RK3066_PLLCON(3));
+}
+
+static int rockchip_rk3066_pll_is_enabled(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ u32 pllcon = readl(pll->reg_base + RK3066_PLLCON(3));
+
+ return !(pllcon & RK3066_PLLCON3_PWRDOWN);
+}
+
+static void rockchip_rk3066_pll_init(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ const struct rockchip_pll_rate_table *rate;
+ struct rockchip_pll_rate_table cur;
+ unsigned long drate;
+
+ if (!(pll->flags & ROCKCHIP_PLL_SYNC_RATE))
+ return;
+
+ drate = clk_hw_get_rate(hw);
+ rate = rockchip_get_pll_settings(pll, drate);
+
+ /* when no rate setting for the current rate, rely on clk_set_rate */
+ if (!rate)
+ return;
+
+ rockchip_rk3066_pll_get_params(pll, &cur);
+
+ pr_debug("%s: pll %s@%lu: nr (%d:%d); no (%d:%d); nf(%d:%d), nb(%d:%d)\n",
+ __func__, clk_hw_get_name(hw), drate, rate->nr, cur.nr,
+ rate->no, cur.no, rate->nf, cur.nf, rate->nb, cur.nb);
+ if (rate->nr != cur.nr || rate->no != cur.no || rate->nf != cur.nf
+ || rate->nb != cur.nb) {
+ pr_debug("%s: pll %s: rate params do not match rate table, adjusting\n",
+ __func__, clk_hw_get_name(hw));
+ rockchip_rk3066_pll_set_params(pll, rate);
+ }
+}
+
+static const struct clk_ops rockchip_rk3066_pll_clk_norate_ops = {
+ .recalc_rate = rockchip_rk3066_pll_recalc_rate,
+ .enable = rockchip_rk3066_pll_enable,
+ .disable = rockchip_rk3066_pll_disable,
+ .is_enabled = rockchip_rk3066_pll_is_enabled,
+};
+
+static const struct clk_ops rockchip_rk3066_pll_clk_ops = {
+ .recalc_rate = rockchip_rk3066_pll_recalc_rate,
+ .round_rate = rockchip_pll_round_rate,
+ .set_rate = rockchip_rk3066_pll_set_rate,
+ .enable = rockchip_rk3066_pll_enable,
+ .disable = rockchip_rk3066_pll_disable,
+ .is_enabled = rockchip_rk3066_pll_is_enabled,
+ .init = rockchip_rk3066_pll_init,
+};
+
+/**
+ * PLL used in RK3399
+ */
+
+#define RK3399_PLLCON(i) (i * 0x4)
+#define RK3399_PLLCON0_FBDIV_MASK 0xfff
+#define RK3399_PLLCON0_FBDIV_SHIFT 0
+#define RK3399_PLLCON1_REFDIV_MASK 0x3f
+#define RK3399_PLLCON1_REFDIV_SHIFT 0
+#define RK3399_PLLCON1_POSTDIV1_MASK 0x7
+#define RK3399_PLLCON1_POSTDIV1_SHIFT 8
+#define RK3399_PLLCON1_POSTDIV2_MASK 0x7
+#define RK3399_PLLCON1_POSTDIV2_SHIFT 12
+#define RK3399_PLLCON2_FRAC_MASK 0xffffff
+#define RK3399_PLLCON2_FRAC_SHIFT 0
+#define RK3399_PLLCON2_LOCK_STATUS BIT(31)
+#define RK3399_PLLCON3_PWRDOWN BIT(0)
+#define RK3399_PLLCON3_DSMPD_MASK 0x1
+#define RK3399_PLLCON3_DSMPD_SHIFT 3
+
+static int rockchip_rk3399_pll_wait_lock(struct rockchip_clk_pll *pll)
+{
+ u32 pllcon;
+ int delay = 24000000;
+
+ /* poll check the lock status in rk3399 xPLLCON2 */
+ while (delay > 0) {
+ pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(2));
+ if (pllcon & RK3399_PLLCON2_LOCK_STATUS)
+ return 0;
+
+ delay--;
+ }
+
+ pr_err("%s: timeout waiting for pll to lock\n", __func__);
+ return -ETIMEDOUT;
+}
+
+static void rockchip_rk3399_pll_get_params(struct rockchip_clk_pll *pll,
+ struct rockchip_pll_rate_table *rate)
+{
+ u32 pllcon;
+
+ pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(0));
+ rate->fbdiv = ((pllcon >> RK3399_PLLCON0_FBDIV_SHIFT)
+ & RK3399_PLLCON0_FBDIV_MASK);
+
+ pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(1));
+ rate->refdiv = ((pllcon >> RK3399_PLLCON1_REFDIV_SHIFT)
+ & RK3399_PLLCON1_REFDIV_MASK);
+ rate->postdiv1 = ((pllcon >> RK3399_PLLCON1_POSTDIV1_SHIFT)
+ & RK3399_PLLCON1_POSTDIV1_MASK);
+ rate->postdiv2 = ((pllcon >> RK3399_PLLCON1_POSTDIV2_SHIFT)
+ & RK3399_PLLCON1_POSTDIV2_MASK);
+
+ pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(2));
+ rate->frac = ((pllcon >> RK3399_PLLCON2_FRAC_SHIFT)
+ & RK3399_PLLCON2_FRAC_MASK);
+
+ pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(3));
+ rate->dsmpd = ((pllcon >> RK3399_PLLCON3_DSMPD_SHIFT)
+ & RK3399_PLLCON3_DSMPD_MASK);
+}
+
+static unsigned long rockchip_rk3399_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long prate)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ struct rockchip_pll_rate_table cur;
+ u64 rate64 = prate;
+
+ rockchip_rk3399_pll_get_params(pll, &cur);
+
+ rate64 *= cur.fbdiv;
+ do_div(rate64, cur.refdiv);
+
+ if (cur.dsmpd == 0) {
+ /* fractional mode */
+ u64 frac_rate64 = prate * cur.frac;
+
+ do_div(frac_rate64, cur.refdiv);
+ rate64 += frac_rate64 >> 24;
+ }
+
+ do_div(rate64, cur.postdiv1);
+ do_div(rate64, cur.postdiv2);
+
+ return (unsigned long)rate64;
+}
+
+static int rockchip_rk3399_pll_set_params(struct rockchip_clk_pll *pll,
+ const struct rockchip_pll_rate_table *rate)
+{
+ const struct clk_ops *pll_mux_ops = pll->pll_mux_ops;
+ struct clk_mux *pll_mux = &pll->pll_mux;
+ struct rockchip_pll_rate_table cur;
+ u32 pllcon;
+ int rate_change_remuxed = 0;
+ int cur_parent;
+ int ret;
+
+ pr_debug("%s: rate settings for %lu fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
+ __func__, rate->rate, rate->fbdiv, rate->postdiv1, rate->refdiv,
+ rate->postdiv2, rate->dsmpd, rate->frac);
+
+ rockchip_rk3399_pll_get_params(pll, &cur);
+ cur.rate = 0;
+
+ cur_parent = pll_mux_ops->get_parent(&pll_mux->hw);
+ if (cur_parent == PLL_MODE_NORM) {
+ pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_SLOW);
+ rate_change_remuxed = 1;
+ }
+
+ /* update pll values */
+ writel_relaxed(HIWORD_UPDATE(rate->fbdiv, RK3399_PLLCON0_FBDIV_MASK,
+ RK3399_PLLCON0_FBDIV_SHIFT),
+ pll->reg_base + RK3399_PLLCON(0));
+
+ writel_relaxed(HIWORD_UPDATE(rate->refdiv, RK3399_PLLCON1_REFDIV_MASK,
+ RK3399_PLLCON1_REFDIV_SHIFT) |
+ HIWORD_UPDATE(rate->postdiv1, RK3399_PLLCON1_POSTDIV1_MASK,
+ RK3399_PLLCON1_POSTDIV1_SHIFT) |
+ HIWORD_UPDATE(rate->postdiv2, RK3399_PLLCON1_POSTDIV2_MASK,
+ RK3399_PLLCON1_POSTDIV2_SHIFT),
+ pll->reg_base + RK3399_PLLCON(1));
+
+ /* xPLL CON2 is not HIWORD_MASK */
+ pllcon = readl_relaxed(pll->reg_base + RK3399_PLLCON(2));
+ pllcon &= ~(RK3399_PLLCON2_FRAC_MASK << RK3399_PLLCON2_FRAC_SHIFT);
+ pllcon |= rate->frac << RK3399_PLLCON2_FRAC_SHIFT;
+ writel_relaxed(pllcon, pll->reg_base + RK3399_PLLCON(2));
+
+ writel_relaxed(HIWORD_UPDATE(rate->dsmpd, RK3399_PLLCON3_DSMPD_MASK,
+ RK3399_PLLCON3_DSMPD_SHIFT),
+ pll->reg_base + RK3399_PLLCON(3));
+
+ /* wait for the pll to lock */
+ ret = rockchip_rk3399_pll_wait_lock(pll);
+ if (ret) {
+ pr_warn("%s: pll update unsuccessful, trying to restore old params\n",
+ __func__);
+ rockchip_rk3399_pll_set_params(pll, &cur);
+ }
+
+ if (rate_change_remuxed)
+ pll_mux_ops->set_parent(&pll_mux->hw, PLL_MODE_NORM);
+
+ return ret;
+}
+
+static int rockchip_rk3399_pll_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ const struct rockchip_pll_rate_table *rate;
+
+ pr_debug("%s: changing %s to %lu with a parent rate of %lu\n",
+ __func__, __clk_get_name(hw->clk), drate, prate);
+
+ /* Get required rate settings from table */
+ rate = rockchip_get_pll_settings(pll, drate);
+ if (!rate) {
+ pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__,
+ drate, __clk_get_name(hw->clk));
+ return -EINVAL;
+ }
+
+ return rockchip_rk3399_pll_set_params(pll, rate);
+}
+
+static int rockchip_rk3399_pll_enable(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+
+ writel(HIWORD_UPDATE(0, RK3399_PLLCON3_PWRDOWN, 0),
+ pll->reg_base + RK3399_PLLCON(3));
+ rockchip_rk3399_pll_wait_lock(pll);
+
+ return 0;
+}
+
+static void rockchip_rk3399_pll_disable(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+
+ writel(HIWORD_UPDATE(RK3399_PLLCON3_PWRDOWN,
+ RK3399_PLLCON3_PWRDOWN, 0),
+ pll->reg_base + RK3399_PLLCON(3));
+}
+
+static int rockchip_rk3399_pll_is_enabled(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ u32 pllcon = readl(pll->reg_base + RK3399_PLLCON(3));
+
+ return !(pllcon & RK3399_PLLCON3_PWRDOWN);
+}
+
+static void rockchip_rk3399_pll_init(struct clk_hw *hw)
+{
+ struct rockchip_clk_pll *pll = to_rockchip_clk_pll(hw);
+ const struct rockchip_pll_rate_table *rate;
+ struct rockchip_pll_rate_table cur;
+ unsigned long drate;
+
+ if (!(pll->flags & ROCKCHIP_PLL_SYNC_RATE))
+ return;
+
+ drate = clk_hw_get_rate(hw);
+ rate = rockchip_get_pll_settings(pll, drate);
+
+ /* when no rate setting for the current rate, rely on clk_set_rate */
+ if (!rate)
+ return;
+
+ rockchip_rk3399_pll_get_params(pll, &cur);
+
+ pr_debug("%s: pll %s@%lu: Hz\n", __func__, __clk_get_name(hw->clk),
+ drate);
+ pr_debug("old - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
+ cur.fbdiv, cur.postdiv1, cur.refdiv, cur.postdiv2,
+ cur.dsmpd, cur.frac);
+ pr_debug("new - fbdiv: %d, postdiv1: %d, refdiv: %d, postdiv2: %d, dsmpd: %d, frac: %d\n",
+ rate->fbdiv, rate->postdiv1, rate->refdiv, rate->postdiv2,
+ rate->dsmpd, rate->frac);
+
+ if (rate->fbdiv != cur.fbdiv || rate->postdiv1 != cur.postdiv1 ||
+ rate->refdiv != cur.refdiv || rate->postdiv2 != cur.postdiv2 ||
+ rate->dsmpd != cur.dsmpd ||
+ (!cur.dsmpd && (rate->frac != cur.frac))) {
+ struct clk *parent = clk_get_parent(hw->clk);
+
+ if (!parent) {
+ pr_warn("%s: parent of %s not available\n",
+ __func__, __clk_get_name(hw->clk));
+ return;
+ }
+
+ pr_debug("%s: pll %s: rate params do not match rate table, adjusting\n",
+ __func__, __clk_get_name(hw->clk));
+ rockchip_rk3399_pll_set_params(pll, rate);
+ }
+}
+
+static const struct clk_ops rockchip_rk3399_pll_clk_norate_ops = {
+ .recalc_rate = rockchip_rk3399_pll_recalc_rate,
+ .enable = rockchip_rk3399_pll_enable,
+ .disable = rockchip_rk3399_pll_disable,
+ .is_enabled = rockchip_rk3399_pll_is_enabled,
+};
+
+static const struct clk_ops rockchip_rk3399_pll_clk_ops = {
+ .recalc_rate = rockchip_rk3399_pll_recalc_rate,
+ .round_rate = rockchip_pll_round_rate,
+ .set_rate = rockchip_rk3399_pll_set_rate,
+ .enable = rockchip_rk3399_pll_enable,
+ .disable = rockchip_rk3399_pll_disable,
+ .is_enabled = rockchip_rk3399_pll_is_enabled,
+ .init = rockchip_rk3399_pll_init,
+};
+
+/*
+ * Common registering of pll clocks
+ */
+
+struct clk *rockchip_clk_register_pll(struct rockchip_clk_provider *ctx,
+ enum rockchip_pll_type pll_type,
+ const char *name, const char *const *parent_names,
+ u8 num_parents, int con_offset, int grf_lock_offset,
+ int lock_shift, int mode_offset, int mode_shift,
+ struct rockchip_pll_rate_table *rate_table,
+ unsigned long flags, u8 clk_pll_flags)
+{
+ const char *pll_parents[3];
+ struct clk_init_data init;
+ struct rockchip_clk_pll *pll;
+ struct clk_mux *pll_mux;
+ struct clk *pll_clk, *mux_clk;
+ char pll_name[20];
+
+ if ((pll_type != pll_rk3328 && num_parents != 2) ||
+ (pll_type == pll_rk3328 && num_parents != 1)) {
+ pr_err("%s: needs two parent clocks\n", __func__);
+ return ERR_PTR(-EINVAL);
+ }
+
+ /* name the actual pll */
+ snprintf(pll_name, sizeof(pll_name), "pll_%s", name);
+
+ pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+ if (!pll)
+ return ERR_PTR(-ENOMEM);
+
+ /* create the mux on top of the real pll */
+ pll->pll_mux_ops = &clk_mux_ops;
+ pll_mux = &pll->pll_mux;
+ pll_mux->reg = ctx->reg_base + mode_offset;
+ pll_mux->shift = mode_shift;
+ if (pll_type == pll_rk3328)
+ pll_mux->mask = PLL_RK3328_MODE_MASK;
+ else
+ pll_mux->mask = PLL_MODE_MASK;
+ pll_mux->flags = 0;
+ pll_mux->lock = &ctx->lock;
+ pll_mux->hw.init = &init;
+
+ if (pll_type == pll_rk3036 ||
+ pll_type == pll_rk3066 ||
+ pll_type == pll_rk3328 ||
+ pll_type == pll_rk3399)
+ pll_mux->flags |= CLK_MUX_HIWORD_MASK;
+
+ /* the actual muxing is xin24m, pll-output, xin32k */
+ pll_parents[0] = parent_names[0];
+ pll_parents[1] = pll_name;
+ pll_parents[2] = parent_names[1];
+
+ init.name = name;
+ init.flags = CLK_SET_RATE_PARENT;
+ init.ops = pll->pll_mux_ops;
+ init.parent_names = pll_parents;
+ if (pll_type == pll_rk3328)
+ init.num_parents = 2;
+ else
+ init.num_parents = ARRAY_SIZE(pll_parents);
+
+ mux_clk = clk_register(NULL, &pll_mux->hw);
+ if (IS_ERR(mux_clk))
+ goto err_mux;
+
+ /* now create the actual pll */
+ init.name = pll_name;
+
+ /* keep all plls untouched for now */
+ init.flags = flags | CLK_IGNORE_UNUSED;
+
+ init.parent_names = &parent_names[0];
+ init.num_parents = 1;
+
+ if (rate_table) {
+ int len;
+
+ /* find count of rates in rate_table */
+ for (len = 0; rate_table[len].rate != 0; )
+ len++;
+
+ pll->rate_count = len;
+ pll->rate_table = kmemdup(rate_table,
+ pll->rate_count *
+ sizeof(struct rockchip_pll_rate_table),
+ GFP_KERNEL);
+ WARN(!pll->rate_table,
+ "%s: could not allocate rate table for %s\n",
+ __func__, name);
+ }
+
+ switch (pll_type) {
+ case pll_rk3036:
+ case pll_rk3328:
+ if (!pll->rate_table || IS_ERR(ctx->grf))
+ init.ops = &rockchip_rk3036_pll_clk_norate_ops;
+ else
+ init.ops = &rockchip_rk3036_pll_clk_ops;
+ break;
+ case pll_rk3066:
+ if (!pll->rate_table || IS_ERR(ctx->grf))
+ init.ops = &rockchip_rk3066_pll_clk_norate_ops;
+ else
+ init.ops = &rockchip_rk3066_pll_clk_ops;
+ break;
+ case pll_rk3399:
+ if (!pll->rate_table)
+ init.ops = &rockchip_rk3399_pll_clk_norate_ops;
+ else
+ init.ops = &rockchip_rk3399_pll_clk_ops;
+ break;
+ default:
+ pr_warn("%s: Unknown pll type for pll clk %s\n",
+ __func__, name);
+ }
+
+ pll->hw.init = &init;
+ pll->type = pll_type;
+ pll->reg_base = ctx->reg_base + con_offset;
+ pll->lock_offset = grf_lock_offset;
+ pll->lock_shift = lock_shift;
+ pll->flags = clk_pll_flags;
+ pll->lock = &ctx->lock;
+ pll->ctx = ctx;
+
+ pll_clk = clk_register(NULL, &pll->hw);
+ if (IS_ERR(pll_clk)) {
+ pr_err("%s: failed to register pll clock %s : %ld\n",
+ __func__, name, PTR_ERR(pll_clk));
+ goto err_pll;
+ }
+
+ return mux_clk;
+
+err_pll:
+ clk_unregister(mux_clk);
+ mux_clk = pll_clk;
+err_mux:
+ kfree(pll);
+ return mux_clk;
+}