// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015, 2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/kernel.h>
[PLL_OFF_OPMODE] = 0x28,
[PLL_OFF_STATUS] = 0x38,
},
+ [CLK_ALPHA_PLL_TYPE_LUCID_EVO] = {
+ [PLL_OFF_OPMODE] = 0x04,
+ [PLL_OFF_STATUS] = 0x0c,
+ [PLL_OFF_L_VAL] = 0x10,
+ [PLL_OFF_ALPHA_VAL] = 0x14,
+ [PLL_OFF_USER_CTL] = 0x18,
+ [PLL_OFF_USER_CTL_U] = 0x1c,
+ [PLL_OFF_CONFIG_CTL] = 0x20,
+ [PLL_OFF_CONFIG_CTL_U] = 0x24,
+ [PLL_OFF_CONFIG_CTL_U1] = 0x28,
+ [PLL_OFF_TEST_CTL] = 0x2c,
+ [PLL_OFF_TEST_CTL_U] = 0x30,
+ [PLL_OFF_TEST_CTL_U1] = 0x34,
+ },
};
EXPORT_SYMBOL_GPL(clk_alpha_pll_regs);
#define LUCID_5LPE_PLL_LATCH_INPUT BIT(14)
#define LUCID_5LPE_ENABLE_VOTE_RUN BIT(21)
+/* LUCID EVO PLL specific settings and offsets */
+#define LUCID_EVO_ENABLE_VOTE_RUN BIT(25)
+#define LUCID_EVO_PLL_L_VAL_MASK GENMASK(15, 0)
+
/* ZONDA PLL specific */
#define ZONDA_PLL_OUT_MASK 0xf
#define ZONDA_STAY_IN_CFA BIT(16)
if (ret)
return ret;
- for (count = 100; count > 0; count--) {
+ for (count = 200; count > 0; count--) {
ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
if (ret)
return ret;
LUCID_5LPE_ALPHA_PLL_ACK_LATCH);
}
-static int clk_lucid_5lpe_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long parent_rate)
+static int __clk_lucid_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate,
+ unsigned long enable_vote_run)
{
struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
- int i, val = 0, div, ret;
+ struct regmap *regmap = pll->clkr.regmap;
+ int i, val, div, ret;
u32 mask;
/*
* If the PLL is in FSM mode, then treat set_rate callback as a
* no-operation.
*/
- ret = regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &val);
+ ret = regmap_read(regmap, PLL_USER_CTL(pll), &val);
if (ret)
return ret;
- if (val & LUCID_5LPE_ENABLE_VOTE_RUN)
+ if (val & enable_vote_run)
return 0;
+ if (!pll->post_div_table) {
+ pr_err("Missing the post_div_table for the %s PLL\n",
+ clk_hw_get_name(&pll->clkr.hw));
+ return -EINVAL;
+ }
+
div = DIV_ROUND_UP_ULL((u64)parent_rate, rate);
for (i = 0; i < pll->num_post_div; i++) {
if (pll->post_div_table[i].div == div) {
mask, val << pll->post_div_shift);
}
+static int clk_lucid_5lpe_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ return __clk_lucid_pll_postdiv_set_rate(hw, rate, parent_rate, LUCID_5LPE_ENABLE_VOTE_RUN);
+}
+
const struct clk_ops clk_alpha_pll_lucid_5lpe_ops = {
.prepare = alpha_pll_lucid_5lpe_prepare,
.enable = alpha_pll_lucid_5lpe_enable,
.set_rate = clk_zonda_pll_set_rate,
};
EXPORT_SYMBOL(clk_alpha_pll_zonda_ops);
+
+static int alpha_pll_lucid_evo_enable(struct clk_hw *hw)
+{
+ struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+ struct regmap *regmap = pll->clkr.regmap;
+ u32 val;
+ int ret;
+
+ ret = regmap_read(regmap, PLL_USER_CTL(pll), &val);
+ if (ret)
+ return ret;
+
+ /* If in FSM mode, just vote for it */
+ if (val & LUCID_EVO_ENABLE_VOTE_RUN) {
+ ret = clk_enable_regmap(hw);
+ if (ret)
+ return ret;
+ return wait_for_pll_enable_lock(pll);
+ }
+
+ /* Check if PLL is already enabled */
+ ret = trion_pll_is_enabled(pll, regmap);
+ if (ret < 0) {
+ return ret;
+ } else if (ret) {
+ pr_warn("%s PLL is already enabled\n", clk_hw_get_name(&pll->clkr.hw));
+ return 0;
+ }
+
+ ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N);
+ if (ret)
+ return ret;
+
+ /* Set operation mode to RUN */
+ regmap_write(regmap, PLL_OPMODE(pll), PLL_RUN);
+
+ ret = wait_for_pll_enable_lock(pll);
+ if (ret)
+ return ret;
+
+ /* Enable the PLL outputs */
+ ret = regmap_update_bits(regmap, PLL_USER_CTL(pll), PLL_OUT_MASK, PLL_OUT_MASK);
+ if (ret)
+ return ret;
+
+ /* Enable the global PLL outputs */
+ ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, PLL_OUTCTRL);
+ if (ret)
+ return ret;
+
+ /* Ensure that the write above goes through before returning. */
+ mb();
+ return ret;
+}
+
+static void alpha_pll_lucid_evo_disable(struct clk_hw *hw)
+{
+ struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+ struct regmap *regmap = pll->clkr.regmap;
+ u32 val;
+ int ret;
+
+ ret = regmap_read(regmap, PLL_USER_CTL(pll), &val);
+ if (ret)
+ return;
+
+ /* If in FSM mode, just unvote it */
+ if (val & LUCID_EVO_ENABLE_VOTE_RUN) {
+ clk_disable_regmap(hw);
+ return;
+ }
+
+ /* Disable the global PLL output */
+ ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0);
+ if (ret)
+ return;
+
+ /* Disable the PLL outputs */
+ ret = regmap_update_bits(regmap, PLL_USER_CTL(pll), PLL_OUT_MASK, 0);
+ if (ret)
+ return;
+
+ /* Place the PLL mode in STANDBY */
+ regmap_write(regmap, PLL_OPMODE(pll), PLL_STANDBY);
+}
+
+static unsigned long alpha_pll_lucid_evo_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+ struct regmap *regmap = pll->clkr.regmap;
+ u32 l, frac;
+
+ regmap_read(regmap, PLL_L_VAL(pll), &l);
+ l &= LUCID_EVO_PLL_L_VAL_MASK;
+ regmap_read(regmap, PLL_ALPHA_VAL(pll), &frac);
+
+ return alpha_pll_calc_rate(parent_rate, l, frac, pll_alpha_width(pll));
+}
+
+static int clk_lucid_evo_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ return __clk_lucid_pll_postdiv_set_rate(hw, rate, parent_rate, LUCID_EVO_ENABLE_VOTE_RUN);
+}
+
+const struct clk_ops clk_alpha_pll_fixed_lucid_evo_ops = {
+ .enable = alpha_pll_lucid_evo_enable,
+ .disable = alpha_pll_lucid_evo_disable,
+ .is_enabled = clk_trion_pll_is_enabled,
+ .recalc_rate = alpha_pll_lucid_evo_recalc_rate,
+ .round_rate = clk_alpha_pll_round_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_fixed_lucid_evo_ops);
+
+const struct clk_ops clk_alpha_pll_postdiv_lucid_evo_ops = {
+ .recalc_rate = clk_alpha_pll_postdiv_fabia_recalc_rate,
+ .round_rate = clk_alpha_pll_postdiv_fabia_round_rate,
+ .set_rate = clk_lucid_evo_pll_postdiv_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_postdiv_lucid_evo_ops);
projects / linux-2.6-microblaze.git / blobdiff