diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c index 9859c67f32fb..110be9d7d6b7 100644 --- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -163,6 +163,19 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = { [PLL_OFF_OPMODE] = 0x38, [PLL_OFF_ALPHA_VAL] = 0x40, }, + [CLK_ALPHA_PLL_TYPE_ZONDA_5LPE] = { + [PLL_OFF_L_VAL] = 0x04, + [PLL_OFF_ALPHA_VAL] = 0x08, + [PLL_OFF_USER_CTL] = 0x0c, + [PLL_OFF_CONFIG_CTL] = 0x10, + [PLL_OFF_CONFIG_CTL_U] = 0x14, + [PLL_OFF_CONFIG_CTL_U1] = 0x18, + [PLL_OFF_TEST_CTL] = 0x1c, + [PLL_OFF_TEST_CTL_U] = 0x20, + [PLL_OFF_TEST_CTL_U1] = 0x24, + [PLL_OFF_OPMODE] = 0x28, + [PLL_OFF_STATUS] = 0x38, + }, }; EXPORT_SYMBOL_GPL(clk_alpha_pll_regs); @@ -199,6 +212,7 @@ EXPORT_SYMBOL_GPL(clk_alpha_pll_regs); #define ZONDA_PLL_OUT_MASK 0xF #define ZONDA_STAY_IN_CFA BIT(16) #define ZONDA_PLL_FREQ_LOCK_DET BIT(29) +#define ZONDA_5LPE_ENABLE_VOTE_RUN BIT(21) #define TRION_PLL_STANDBY 0x0 #define TRION_PLL_RUN 0x1 @@ -941,84 +955,104 @@ static long clk_trion_pll_round_rate(struct clk_hw *hw, unsigned long rate, return clamp(rate, min_freq, max_freq); } -static int clk_zonda_pll_is_enabled(struct clk_hw *hw) +static int __zonda_pll_is_enabled(struct clk_alpha_pll *pll, + struct regmap *regmap) { - struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); u32 mode_regval, opmode_regval; int ret; - ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &mode_regval); - if (ret) - return ret; - ret = regmap_read(pll->clkr.regmap, PLL_OPMODE(pll), &opmode_regval); - if (ret) + ret = regmap_read(regmap, PLL_MODE(pll), &mode_regval); + ret |= regmap_read(regmap, PLL_OPMODE(pll), &opmode_regval); + if (ret) { + pr_err("zonda pll is enabled reg read failed\n"); return ret; + } - return (opmode_regval & PLL_OPMODE_RUN) && - (mode_regval & PLL_OUTCTRL); + return ((opmode_regval & PLL_OPMODE_RUN) && + (mode_regval & PLL_OUTCTRL)); } -void clk_zonda_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, +static int clk_zonda_pll_is_enabled(struct clk_hw *hw) +{ + struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); + + return __zonda_pll_is_enabled(pll, pll->clkr.regmap); +} + +int clk_zonda_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config) { + int ret; + + ret = __zonda_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; + } + if (config->l) - regmap_write(regmap, PLL_L_VAL(pll), config->l); + ret |= regmap_write(regmap, PLL_L_VAL(pll), config->l); if (config->alpha) - regmap_write(regmap, PLL_ALPHA_VAL(pll), config->alpha); + ret |= regmap_write(regmap, PLL_ALPHA_VAL(pll), config->alpha); if (config->config_ctl_val) - regmap_write(regmap, PLL_CONFIG_CTL(pll), + ret |= regmap_write(regmap, PLL_CONFIG_CTL(pll), config->config_ctl_val); if (config->config_ctl_hi_val) - regmap_write(regmap, PLL_CONFIG_CTL_U(pll), + ret |= regmap_write(regmap, PLL_CONFIG_CTL_U(pll), config->config_ctl_hi_val); if (config->config_ctl_hi1_val) - regmap_write(regmap, PLL_CONFIG_CTL_U1(pll), + ret |= regmap_write(regmap, PLL_CONFIG_CTL_U1(pll), config->config_ctl_hi1_val); if (config->user_ctl_val) - regmap_write(regmap, PLL_USER_CTL(pll), + ret |= regmap_write(regmap, PLL_USER_CTL(pll), config->user_ctl_val); if (config->user_ctl_hi_val) - regmap_write(regmap, PLL_USER_CTL_U(pll), + ret |= regmap_write(regmap, PLL_USER_CTL_U(pll), config->user_ctl_hi_val); if (config->user_ctl_hi1_val) - regmap_write(regmap, PLL_USER_CTL_U1(pll), + ret |= regmap_write(regmap, PLL_USER_CTL_U1(pll), config->user_ctl_hi1_val); if (config->test_ctl_val) - regmap_write(regmap, PLL_TEST_CTL(pll), + ret |= regmap_write(regmap, PLL_TEST_CTL(pll), config->test_ctl_val); if (config->test_ctl_hi_val) - regmap_write(regmap, PLL_TEST_CTL_U(pll), + ret |= regmap_write(regmap, PLL_TEST_CTL_U(pll), config->test_ctl_hi_val); if (config->test_ctl_hi1_val) - regmap_write(regmap, PLL_TEST_CTL_U1(pll), + ret |= regmap_write(regmap, PLL_TEST_CTL_U1(pll), config->test_ctl_hi1_val); - regmap_update_bits(regmap, PLL_MODE(pll), + ret |= regmap_update_bits(regmap, PLL_MODE(pll), PLL_BYPASSNL, 0); /* Disable PLL output */ - regmap_update_bits(regmap, PLL_MODE(pll), + ret |= regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0); /* Set operation mode to OFF */ - regmap_write(regmap, PLL_OPMODE(pll), PLL_OPMODE_STANDBY); + ret |= regmap_write(regmap, PLL_OPMODE(pll), PLL_OPMODE_STANDBY); /* PLL should be in OFF mode before continuing */ wmb(); /* Place the PLL in STANDBY mode */ - regmap_update_bits(regmap, PLL_MODE(pll), + ret |= regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N); + + return ret ? -EIO : 0; } static int clk_zonda_pll_enable(struct clk_hw *hw) @@ -1185,6 +1219,120 @@ clk_zonda_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) return alpha_pll_calc_rate(parent_rate, l, frac, ALPHA_BITWIDTH); } +int clk_zonda_5lpe_pll_configure(struct clk_alpha_pll *pll, + struct regmap *regmap, + const struct alpha_pll_config *config) +{ + return clk_zonda_pll_configure(pll, regmap, config); +} +EXPORT_SYMBOL(clk_zonda_5lpe_pll_configure); + + +static int clk_zonda_5lpe_pll_enable(struct clk_hw *hw) +{ + struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); + u32 val, test_ctl_val; + int ret; + + ret = regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &val); + if (ret) + return ret; + + /* If in FSM mode, just vote for it */ + if (val & ZONDA_5LPE_ENABLE_VOTE_RUN) { + ret = clk_enable_regmap(hw); + if (ret) + return ret; + return wait_for_pll_enable_active(pll); + } + + /* Check if PLL is already enabled */ + ret = __zonda_pll_is_enabled(pll, pll->clkr.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(pll->clkr.regmap, PLL_MODE(pll), + PLL_RESET_N | PLL_BYPASSNL, + PLL_RESET_N | PLL_BYPASSNL); + if (ret) + return ret; + + /* Set operation mode to RUN */ + regmap_write(pll->clkr.regmap, PLL_OPMODE(pll), PLL_OPMODE_RUN); + + ret = regmap_read(pll->clkr.regmap, PLL_TEST_CTL(pll), &test_ctl_val); + if (ret) + return ret; + + /* If cfa mode then poll for freq lock */ + if (test_ctl_val & ZONDA_STAY_IN_CFA) + ret = wait_for_zonda_pll_freq_lock(pll); + else + ret = wait_for_pll_enable_lock(pll); + if (ret) + return ret; + + /* Enable the PLL outputs */ + ret = regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll), + ZONDA_PLL_OUT_MASK, ZONDA_PLL_OUT_MASK); + if (ret) + return ret; + + /* Enable the global PLL outputs */ + ret = regmap_update_bits(pll->clkr.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 clk_zonda_5lpe_pll_disable(struct clk_hw *hw) +{ + struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); + u32 val, mask; + int ret; + + ret = regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &val); + if (ret) + return; + + /* If in FSM mode, just unvote it */ + if (val & ZONDA_5LPE_ENABLE_VOTE_RUN) { + clk_disable_regmap(hw); + return; + } + + /* Disable the global PLL output */ + ret = regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll), + PLL_OUTCTRL, 0); + if (ret) + return; + + /* Disable the PLL outputs */ + ret = regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll), + PLL_OUT_MASK, 0); + if (ret) + return; + + /* Place the PLL mode in STANDBY */ + regmap_write(pll->clkr.regmap, PLL_OPMODE(pll), + PLL_OPMODE_STANDBY); + + mask = PLL_RESET_N | PLL_BYPASSNL; + ret = regmap_update_bits(pll->clkr.regmap, PLL_MODE(pll), mask, 0); + if (ret) + return; +} + const struct clk_ops clk_alpha_pll_ops = { .enable = clk_alpha_pll_enable, .disable = clk_alpha_pll_disable, @@ -1234,6 +1382,16 @@ const struct clk_ops clk_alpha_pll_zonda_ops = { }; EXPORT_SYMBOL(clk_alpha_pll_zonda_ops); +const struct clk_ops clk_alpha_pll_zonda_5lpe_ops = { + .enable = clk_zonda_5lpe_pll_enable, + .disable = clk_zonda_5lpe_pll_disable, + .is_enabled = clk_zonda_pll_is_enabled, + .recalc_rate = clk_zonda_pll_recalc_rate, + .round_rate = clk_alpha_pll_round_rate, + .set_rate = clk_zonda_pll_set_rate, +}; +EXPORT_SYMBOL(clk_alpha_pll_zonda_5lpe_ops); + static unsigned long clk_alpha_pll_postdiv_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h index 1d9180dd1574..9e560ee8daa5 100644 --- a/drivers/clk/qcom/clk-alpha-pll.h +++ b/drivers/clk/qcom/clk-alpha-pll.h @@ -20,6 +20,7 @@ enum { CLK_ALPHA_PLL_TYPE_LUCID, CLK_ALPHA_PLL_TYPE_ZONDA, CLK_ALPHA_PLL_TYPE_LUCID_5LPE, + CLK_ALPHA_PLL_TYPE_ZONDA_5LPE, CLK_ALPHA_PLL_TYPE_MAX, }; @@ -141,6 +142,7 @@ extern const struct clk_ops clk_alpha_pll_postdiv_lucid_ops; extern const struct clk_ops clk_alpha_pll_zonda_ops; extern const struct clk_ops clk_alpha_pll_postdiv_zonda_ops; +extern const struct clk_ops clk_alpha_pll_zonda_5lpe_ops; extern const struct clk_ops clk_alpha_pll_lucid_5lpe_ops; extern const struct clk_ops clk_alpha_pll_fixed_lucid_5lpe_ops; @@ -155,10 +157,12 @@ void clk_fabia_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config); void clk_lucid_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config); -void clk_zonda_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, +int clk_zonda_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config); int clk_lucid_5lpe_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config); - +int clk_zonda_5lpe_pll_configure(struct clk_alpha_pll *pll, + struct regmap *regmap, + const struct alpha_pll_config *config); #endif