[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/clk/qcom/clk-rcg2.c b/src/kernel/linux/v4.14/drivers/clk/qcom/clk-rcg2.c
new file mode 100644
index 0000000..6091d9b
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/clk/qcom/clk-rcg2.c
@@ -0,0 +1,875 @@
+/*
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/bug.h>
+#include <linux/export.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/regmap.h>
+#include <linux/math64.h>
+
+#include <asm/div64.h>
+
+#include "clk-rcg.h"
+#include "common.h"
+
+#define CMD_REG 0x0
+#define CMD_UPDATE BIT(0)
+#define CMD_ROOT_EN BIT(1)
+#define CMD_DIRTY_CFG BIT(4)
+#define CMD_DIRTY_N BIT(5)
+#define CMD_DIRTY_M BIT(6)
+#define CMD_DIRTY_D BIT(7)
+#define CMD_ROOT_OFF BIT(31)
+
+#define CFG_REG 0x4
+#define CFG_SRC_DIV_SHIFT 0
+#define CFG_SRC_SEL_SHIFT 8
+#define CFG_SRC_SEL_MASK (0x7 << CFG_SRC_SEL_SHIFT)
+#define CFG_MODE_SHIFT 12
+#define CFG_MODE_MASK (0x3 << CFG_MODE_SHIFT)
+#define CFG_MODE_DUAL_EDGE (0x2 << CFG_MODE_SHIFT)
+
+#define M_REG 0x8
+#define N_REG 0xc
+#define D_REG 0x10
+
+enum freq_policy {
+ FLOOR,
+ CEIL,
+};
+
+static int clk_rcg2_is_enabled(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ u32 cmd;
+ int ret;
+
+ ret = regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CMD_REG, &cmd);
+ if (ret)
+ return ret;
+
+ return (cmd & CMD_ROOT_OFF) == 0;
+}
+
+static u8 clk_rcg2_get_parent(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ int num_parents = clk_hw_get_num_parents(hw);
+ u32 cfg;
+ int i, ret;
+
+ ret = regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, &cfg);
+ if (ret)
+ goto err;
+
+ cfg &= CFG_SRC_SEL_MASK;
+ cfg >>= CFG_SRC_SEL_SHIFT;
+
+ for (i = 0; i < num_parents; i++)
+ if (cfg == rcg->parent_map[i].cfg)
+ return i;
+
+err:
+ pr_debug("%s: Clock %s has invalid parent, using default.\n",
+ __func__, clk_hw_get_name(hw));
+ return 0;
+}
+
+static int update_config(struct clk_rcg2 *rcg)
+{
+ int count, ret;
+ u32 cmd;
+ struct clk_hw *hw = &rcg->clkr.hw;
+ const char *name = clk_hw_get_name(hw);
+
+ ret = regmap_update_bits(rcg->clkr.regmap, rcg->cmd_rcgr + CMD_REG,
+ CMD_UPDATE, CMD_UPDATE);
+ if (ret)
+ return ret;
+
+ /* Wait for update to take effect */
+ for (count = 500; count > 0; count--) {
+ ret = regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CMD_REG, &cmd);
+ if (ret)
+ return ret;
+ if (!(cmd & CMD_UPDATE))
+ return 0;
+ udelay(1);
+ }
+
+ WARN(1, "%s: rcg didn't update its configuration.", name);
+ return -EBUSY;
+}
+
+static int clk_rcg2_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ int ret;
+ u32 cfg = rcg->parent_map[index].cfg << CFG_SRC_SEL_SHIFT;
+
+ ret = regmap_update_bits(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
+ CFG_SRC_SEL_MASK, cfg);
+ if (ret)
+ return ret;
+
+ return update_config(rcg);
+}
+
+/*
+ * Calculate m/n:d rate
+ *
+ * parent_rate m
+ * rate = ----------- x ---
+ * hid_div n
+ */
+static unsigned long
+calc_rate(unsigned long rate, u32 m, u32 n, u32 mode, u32 hid_div)
+{
+ if (hid_div) {
+ rate *= 2;
+ rate /= hid_div + 1;
+ }
+
+ if (mode) {
+ u64 tmp = rate;
+ tmp *= m;
+ do_div(tmp, n);
+ rate = tmp;
+ }
+
+ return rate;
+}
+
+static unsigned long
+clk_rcg2_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ u32 cfg, hid_div, m = 0, n = 0, mode = 0, mask;
+
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, &cfg);
+
+ if (rcg->mnd_width) {
+ mask = BIT(rcg->mnd_width) - 1;
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + M_REG, &m);
+ m &= mask;
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + N_REG, &n);
+ n = ~n;
+ n &= mask;
+ n += m;
+ mode = cfg & CFG_MODE_MASK;
+ mode >>= CFG_MODE_SHIFT;
+ }
+
+ mask = BIT(rcg->hid_width) - 1;
+ hid_div = cfg >> CFG_SRC_DIV_SHIFT;
+ hid_div &= mask;
+
+ return calc_rate(parent_rate, m, n, mode, hid_div);
+}
+
+static int _freq_tbl_determine_rate(struct clk_hw *hw, const struct freq_tbl *f,
+ struct clk_rate_request *req,
+ enum freq_policy policy)
+{
+ unsigned long clk_flags, rate = req->rate;
+ struct clk_hw *p;
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ int index;
+
+ switch (policy) {
+ case FLOOR:
+ f = qcom_find_freq_floor(f, rate);
+ break;
+ case CEIL:
+ f = qcom_find_freq(f, rate);
+ break;
+ default:
+ return -EINVAL;
+ };
+
+ if (!f)
+ return -EINVAL;
+
+ index = qcom_find_src_index(hw, rcg->parent_map, f->src);
+ if (index < 0)
+ return index;
+
+ clk_flags = clk_hw_get_flags(hw);
+ p = clk_hw_get_parent_by_index(hw, index);
+ if (!p)
+ return -EINVAL;
+
+ if (clk_flags & CLK_SET_RATE_PARENT) {
+ if (f->pre_div) {
+ if (!rate)
+ rate = req->rate;
+ rate /= 2;
+ rate *= f->pre_div + 1;
+ }
+
+ if (f->n) {
+ u64 tmp = rate;
+ tmp = tmp * f->n;
+ do_div(tmp, f->m);
+ rate = tmp;
+ }
+ } else {
+ rate = clk_hw_get_rate(p);
+ }
+ req->best_parent_hw = p;
+ req->best_parent_rate = rate;
+ req->rate = f->freq;
+
+ return 0;
+}
+
+static int clk_rcg2_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+
+ return _freq_tbl_determine_rate(hw, rcg->freq_tbl, req, CEIL);
+}
+
+static int clk_rcg2_determine_floor_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+
+ return _freq_tbl_determine_rate(hw, rcg->freq_tbl, req, FLOOR);
+}
+
+static int clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
+{
+ u32 cfg, mask;
+ struct clk_hw *hw = &rcg->clkr.hw;
+ int ret, index = qcom_find_src_index(hw, rcg->parent_map, f->src);
+
+ if (index < 0)
+ return index;
+
+ if (rcg->mnd_width && f->n) {
+ mask = BIT(rcg->mnd_width) - 1;
+ ret = regmap_update_bits(rcg->clkr.regmap,
+ rcg->cmd_rcgr + M_REG, mask, f->m);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(rcg->clkr.regmap,
+ rcg->cmd_rcgr + N_REG, mask, ~(f->n - f->m));
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(rcg->clkr.regmap,
+ rcg->cmd_rcgr + D_REG, mask, ~f->n);
+ if (ret)
+ return ret;
+ }
+
+ mask = BIT(rcg->hid_width) - 1;
+ mask |= CFG_SRC_SEL_MASK | CFG_MODE_MASK;
+ cfg = f->pre_div << CFG_SRC_DIV_SHIFT;
+ cfg |= rcg->parent_map[index].cfg << CFG_SRC_SEL_SHIFT;
+ if (rcg->mnd_width && f->n && (f->m != f->n))
+ cfg |= CFG_MODE_DUAL_EDGE;
+ ret = regmap_update_bits(rcg->clkr.regmap,
+ rcg->cmd_rcgr + CFG_REG, mask, cfg);
+ if (ret)
+ return ret;
+
+ return update_config(rcg);
+}
+
+static int __clk_rcg2_set_rate(struct clk_hw *hw, unsigned long rate,
+ enum freq_policy policy)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ const struct freq_tbl *f;
+
+ switch (policy) {
+ case FLOOR:
+ f = qcom_find_freq_floor(rcg->freq_tbl, rate);
+ break;
+ case CEIL:
+ f = qcom_find_freq(rcg->freq_tbl, rate);
+ break;
+ default:
+ return -EINVAL;
+ };
+
+ if (!f)
+ return -EINVAL;
+
+ return clk_rcg2_configure(rcg, f);
+}
+
+static int clk_rcg2_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ return __clk_rcg2_set_rate(hw, rate, CEIL);
+}
+
+static int clk_rcg2_set_floor_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ return __clk_rcg2_set_rate(hw, rate, FLOOR);
+}
+
+static int clk_rcg2_set_rate_and_parent(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate, u8 index)
+{
+ return __clk_rcg2_set_rate(hw, rate, CEIL);
+}
+
+static int clk_rcg2_set_floor_rate_and_parent(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate, u8 index)
+{
+ return __clk_rcg2_set_rate(hw, rate, FLOOR);
+}
+
+const struct clk_ops clk_rcg2_ops = {
+ .is_enabled = clk_rcg2_is_enabled,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .determine_rate = clk_rcg2_determine_rate,
+ .set_rate = clk_rcg2_set_rate,
+ .set_rate_and_parent = clk_rcg2_set_rate_and_parent,
+};
+EXPORT_SYMBOL_GPL(clk_rcg2_ops);
+
+const struct clk_ops clk_rcg2_floor_ops = {
+ .is_enabled = clk_rcg2_is_enabled,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .determine_rate = clk_rcg2_determine_floor_rate,
+ .set_rate = clk_rcg2_set_floor_rate,
+ .set_rate_and_parent = clk_rcg2_set_floor_rate_and_parent,
+};
+EXPORT_SYMBOL_GPL(clk_rcg2_floor_ops);
+
+static int clk_rcg2_shared_force_enable(struct clk_hw *hw, unsigned long rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ const char *name = clk_hw_get_name(hw);
+ int ret, count;
+
+ /* force enable RCG */
+ ret = regmap_update_bits(rcg->clkr.regmap, rcg->cmd_rcgr + CMD_REG,
+ CMD_ROOT_EN, CMD_ROOT_EN);
+ if (ret)
+ return ret;
+
+ /* wait for RCG to turn ON */
+ for (count = 500; count > 0; count--) {
+ ret = clk_rcg2_is_enabled(hw);
+ if (ret)
+ break;
+ udelay(1);
+ }
+ if (!count)
+ pr_err("%s: RCG did not turn on\n", name);
+
+ /* set clock rate */
+ ret = __clk_rcg2_set_rate(hw, rate, CEIL);
+ if (ret)
+ return ret;
+
+ /* clear force enable RCG */
+ return regmap_update_bits(rcg->clkr.regmap, rcg->cmd_rcgr + CMD_REG,
+ CMD_ROOT_EN, 0);
+}
+
+static int clk_rcg2_shared_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+
+ /* cache the rate */
+ rcg->current_freq = rate;
+
+ if (!__clk_is_enabled(hw->clk))
+ return 0;
+
+ return clk_rcg2_shared_force_enable(hw, rcg->current_freq);
+}
+
+static unsigned long
+clk_rcg2_shared_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+
+ return rcg->current_freq = clk_rcg2_recalc_rate(hw, parent_rate);
+}
+
+static int clk_rcg2_shared_enable(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+
+ return clk_rcg2_shared_force_enable(hw, rcg->current_freq);
+}
+
+static void clk_rcg2_shared_disable(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+
+ /* switch to XO, which is the lowest entry in the freq table */
+ clk_rcg2_shared_set_rate(hw, rcg->freq_tbl[0].freq, 0);
+}
+
+const struct clk_ops clk_rcg2_shared_ops = {
+ .enable = clk_rcg2_shared_enable,
+ .disable = clk_rcg2_shared_disable,
+ .get_parent = clk_rcg2_get_parent,
+ .recalc_rate = clk_rcg2_shared_recalc_rate,
+ .determine_rate = clk_rcg2_determine_rate,
+ .set_rate = clk_rcg2_shared_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_rcg2_shared_ops);
+
+struct frac_entry {
+ int num;
+ int den;
+};
+
+static const struct frac_entry frac_table_675m[] = { /* link rate of 270M */
+ { 52, 295 }, /* 119 M */
+ { 11, 57 }, /* 130.25 M */
+ { 63, 307 }, /* 138.50 M */
+ { 11, 50 }, /* 148.50 M */
+ { 47, 206 }, /* 154 M */
+ { 31, 100 }, /* 205.25 M */
+ { 107, 269 }, /* 268.50 M */
+ { },
+};
+
+static struct frac_entry frac_table_810m[] = { /* Link rate of 162M */
+ { 31, 211 }, /* 119 M */
+ { 32, 199 }, /* 130.25 M */
+ { 63, 307 }, /* 138.50 M */
+ { 11, 60 }, /* 148.50 M */
+ { 50, 263 }, /* 154 M */
+ { 31, 120 }, /* 205.25 M */
+ { 119, 359 }, /* 268.50 M */
+ { },
+};
+
+static int clk_edp_pixel_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ struct freq_tbl f = *rcg->freq_tbl;
+ const struct frac_entry *frac;
+ int delta = 100000;
+ s64 src_rate = parent_rate;
+ s64 request;
+ u32 mask = BIT(rcg->hid_width) - 1;
+ u32 hid_div;
+
+ if (src_rate == 810000000)
+ frac = frac_table_810m;
+ else
+ frac = frac_table_675m;
+
+ for (; frac->num; frac++) {
+ request = rate;
+ request *= frac->den;
+ request = div_s64(request, frac->num);
+ if ((src_rate < (request - delta)) ||
+ (src_rate > (request + delta)))
+ continue;
+
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
+ &hid_div);
+ f.pre_div = hid_div;
+ f.pre_div >>= CFG_SRC_DIV_SHIFT;
+ f.pre_div &= mask;
+ f.m = frac->num;
+ f.n = frac->den;
+
+ return clk_rcg2_configure(rcg, &f);
+ }
+
+ return -EINVAL;
+}
+
+static int clk_edp_pixel_set_rate_and_parent(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate, u8 index)
+{
+ /* Parent index is set statically in frequency table */
+ return clk_edp_pixel_set_rate(hw, rate, parent_rate);
+}
+
+static int clk_edp_pixel_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ const struct freq_tbl *f = rcg->freq_tbl;
+ const struct frac_entry *frac;
+ int delta = 100000;
+ s64 request;
+ u32 mask = BIT(rcg->hid_width) - 1;
+ u32 hid_div;
+ int index = qcom_find_src_index(hw, rcg->parent_map, f->src);
+
+ /* Force the correct parent */
+ req->best_parent_hw = clk_hw_get_parent_by_index(hw, index);
+ req->best_parent_rate = clk_hw_get_rate(req->best_parent_hw);
+
+ if (req->best_parent_rate == 810000000)
+ frac = frac_table_810m;
+ else
+ frac = frac_table_675m;
+
+ for (; frac->num; frac++) {
+ request = req->rate;
+ request *= frac->den;
+ request = div_s64(request, frac->num);
+ if ((req->best_parent_rate < (request - delta)) ||
+ (req->best_parent_rate > (request + delta)))
+ continue;
+
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
+ &hid_div);
+ hid_div >>= CFG_SRC_DIV_SHIFT;
+ hid_div &= mask;
+
+ req->rate = calc_rate(req->best_parent_rate,
+ frac->num, frac->den,
+ !!frac->den, hid_div);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+const struct clk_ops clk_edp_pixel_ops = {
+ .is_enabled = clk_rcg2_is_enabled,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .set_rate = clk_edp_pixel_set_rate,
+ .set_rate_and_parent = clk_edp_pixel_set_rate_and_parent,
+ .determine_rate = clk_edp_pixel_determine_rate,
+};
+EXPORT_SYMBOL_GPL(clk_edp_pixel_ops);
+
+static int clk_byte_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ const struct freq_tbl *f = rcg->freq_tbl;
+ int index = qcom_find_src_index(hw, rcg->parent_map, f->src);
+ unsigned long parent_rate, div;
+ u32 mask = BIT(rcg->hid_width) - 1;
+ struct clk_hw *p;
+
+ if (req->rate == 0)
+ return -EINVAL;
+
+ req->best_parent_hw = p = clk_hw_get_parent_by_index(hw, index);
+ req->best_parent_rate = parent_rate = clk_hw_round_rate(p, req->rate);
+
+ div = DIV_ROUND_UP((2 * parent_rate), req->rate) - 1;
+ div = min_t(u32, div, mask);
+
+ req->rate = calc_rate(parent_rate, 0, 0, 0, div);
+
+ return 0;
+}
+
+static int clk_byte_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ struct freq_tbl f = *rcg->freq_tbl;
+ unsigned long div;
+ u32 mask = BIT(rcg->hid_width) - 1;
+
+ div = DIV_ROUND_UP((2 * parent_rate), rate) - 1;
+ div = min_t(u32, div, mask);
+
+ f.pre_div = div;
+
+ return clk_rcg2_configure(rcg, &f);
+}
+
+static int clk_byte_set_rate_and_parent(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate, u8 index)
+{
+ /* Parent index is set statically in frequency table */
+ return clk_byte_set_rate(hw, rate, parent_rate);
+}
+
+const struct clk_ops clk_byte_ops = {
+ .is_enabled = clk_rcg2_is_enabled,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .set_rate = clk_byte_set_rate,
+ .set_rate_and_parent = clk_byte_set_rate_and_parent,
+ .determine_rate = clk_byte_determine_rate,
+};
+EXPORT_SYMBOL_GPL(clk_byte_ops);
+
+static int clk_byte2_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ unsigned long parent_rate, div;
+ u32 mask = BIT(rcg->hid_width) - 1;
+ struct clk_hw *p;
+ unsigned long rate = req->rate;
+
+ if (rate == 0)
+ return -EINVAL;
+
+ p = req->best_parent_hw;
+ req->best_parent_rate = parent_rate = clk_hw_round_rate(p, rate);
+
+ div = DIV_ROUND_UP((2 * parent_rate), rate) - 1;
+ div = min_t(u32, div, mask);
+
+ req->rate = calc_rate(parent_rate, 0, 0, 0, div);
+
+ return 0;
+}
+
+static int clk_byte2_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ struct freq_tbl f = { 0 };
+ unsigned long div;
+ int i, num_parents = clk_hw_get_num_parents(hw);
+ u32 mask = BIT(rcg->hid_width) - 1;
+ u32 cfg;
+
+ div = DIV_ROUND_UP((2 * parent_rate), rate) - 1;
+ div = min_t(u32, div, mask);
+
+ f.pre_div = div;
+
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, &cfg);
+ cfg &= CFG_SRC_SEL_MASK;
+ cfg >>= CFG_SRC_SEL_SHIFT;
+
+ for (i = 0; i < num_parents; i++) {
+ if (cfg == rcg->parent_map[i].cfg) {
+ f.src = rcg->parent_map[i].src;
+ return clk_rcg2_configure(rcg, &f);
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int clk_byte2_set_rate_and_parent(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate, u8 index)
+{
+ /* Read the hardware to determine parent during set_rate */
+ return clk_byte2_set_rate(hw, rate, parent_rate);
+}
+
+const struct clk_ops clk_byte2_ops = {
+ .is_enabled = clk_rcg2_is_enabled,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .set_rate = clk_byte2_set_rate,
+ .set_rate_and_parent = clk_byte2_set_rate_and_parent,
+ .determine_rate = clk_byte2_determine_rate,
+};
+EXPORT_SYMBOL_GPL(clk_byte2_ops);
+
+static const struct frac_entry frac_table_pixel[] = {
+ { 3, 8 },
+ { 2, 9 },
+ { 4, 9 },
+ { 1, 1 },
+ { }
+};
+
+static int clk_pixel_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ unsigned long request, src_rate;
+ int delta = 100000;
+ const struct frac_entry *frac = frac_table_pixel;
+
+ for (; frac->num; frac++) {
+ request = (req->rate * frac->den) / frac->num;
+
+ src_rate = clk_hw_round_rate(req->best_parent_hw, request);
+ if ((src_rate < (request - delta)) ||
+ (src_rate > (request + delta)))
+ continue;
+
+ req->best_parent_rate = src_rate;
+ req->rate = (src_rate * frac->num) / frac->den;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int clk_pixel_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ struct freq_tbl f = { 0 };
+ const struct frac_entry *frac = frac_table_pixel;
+ unsigned long request;
+ int delta = 100000;
+ u32 mask = BIT(rcg->hid_width) - 1;
+ u32 hid_div, cfg;
+ int i, num_parents = clk_hw_get_num_parents(hw);
+
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, &cfg);
+ cfg &= CFG_SRC_SEL_MASK;
+ cfg >>= CFG_SRC_SEL_SHIFT;
+
+ for (i = 0; i < num_parents; i++)
+ if (cfg == rcg->parent_map[i].cfg) {
+ f.src = rcg->parent_map[i].src;
+ break;
+ }
+
+ for (; frac->num; frac++) {
+ request = (rate * frac->den) / frac->num;
+
+ if ((parent_rate < (request - delta)) ||
+ (parent_rate > (request + delta)))
+ continue;
+
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
+ &hid_div);
+ f.pre_div = hid_div;
+ f.pre_div >>= CFG_SRC_DIV_SHIFT;
+ f.pre_div &= mask;
+ f.m = frac->num;
+ f.n = frac->den;
+
+ return clk_rcg2_configure(rcg, &f);
+ }
+ return -EINVAL;
+}
+
+static int clk_pixel_set_rate_and_parent(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate, u8 index)
+{
+ return clk_pixel_set_rate(hw, rate, parent_rate);
+}
+
+const struct clk_ops clk_pixel_ops = {
+ .is_enabled = clk_rcg2_is_enabled,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .set_rate = clk_pixel_set_rate,
+ .set_rate_and_parent = clk_pixel_set_rate_and_parent,
+ .determine_rate = clk_pixel_determine_rate,
+};
+EXPORT_SYMBOL_GPL(clk_pixel_ops);
+
+static int clk_gfx3d_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct clk_rate_request parent_req = { };
+ struct clk_hw *p2, *p8, *p9, *xo;
+ unsigned long p9_rate;
+ int ret;
+
+ xo = clk_hw_get_parent_by_index(hw, 0);
+ if (req->rate == clk_hw_get_rate(xo)) {
+ req->best_parent_hw = xo;
+ return 0;
+ }
+
+ p9 = clk_hw_get_parent_by_index(hw, 2);
+ p2 = clk_hw_get_parent_by_index(hw, 3);
+ p8 = clk_hw_get_parent_by_index(hw, 4);
+
+ /* PLL9 is a fixed rate PLL */
+ p9_rate = clk_hw_get_rate(p9);
+
+ parent_req.rate = req->rate = min(req->rate, p9_rate);
+ if (req->rate == p9_rate) {
+ req->rate = req->best_parent_rate = p9_rate;
+ req->best_parent_hw = p9;
+ return 0;
+ }
+
+ if (req->best_parent_hw == p9) {
+ /* Are we going back to a previously used rate? */
+ if (clk_hw_get_rate(p8) == req->rate)
+ req->best_parent_hw = p8;
+ else
+ req->best_parent_hw = p2;
+ } else if (req->best_parent_hw == p8) {
+ req->best_parent_hw = p2;
+ } else {
+ req->best_parent_hw = p8;
+ }
+
+ ret = __clk_determine_rate(req->best_parent_hw, &parent_req);
+ if (ret)
+ return ret;
+
+ req->rate = req->best_parent_rate = parent_req.rate;
+
+ return 0;
+}
+
+static int clk_gfx3d_set_rate_and_parent(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate, u8 index)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ u32 cfg;
+ int ret;
+
+ /* Just mux it, we don't use the division or m/n hardware */
+ cfg = rcg->parent_map[index].cfg << CFG_SRC_SEL_SHIFT;
+ ret = regmap_write(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, cfg);
+ if (ret)
+ return ret;
+
+ return update_config(rcg);
+}
+
+static int clk_gfx3d_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ /*
+ * We should never get here; clk_gfx3d_determine_rate() should always
+ * make us use a different parent than what we're currently using, so
+ * clk_gfx3d_set_rate_and_parent() should always be called.
+ */
+ return 0;
+}
+
+const struct clk_ops clk_gfx3d_ops = {
+ .is_enabled = clk_rcg2_is_enabled,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .set_rate = clk_gfx3d_set_rate,
+ .set_rate_and_parent = clk_gfx3d_set_rate_and_parent,
+ .determine_rate = clk_gfx3d_determine_rate,
+};
+EXPORT_SYMBOL_GPL(clk_gfx3d_ops);