clk: qcom: clk-alpha-pll: Add support for Regera PLL ops

Regera PLL ops are required to control the Regera PLL from clock
controller drivers, hence add the Regera PLL ops and configure
function.

Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240731062916.2680823-6-quic_skakitap@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

2 files changed, 36 insertions, 1 deletions

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index d87314042528..d2c591b02a9d 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2015, 2018, The Linux Foundation. All rights reserved.
- * Copyright (c) 2021, 2023, Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021, 2023-2024, Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #include <linux/kernel.h>
@@ -2657,3 +2657,33 @@ const struct clk_ops clk_alpha_pll_stromer_plus_ops = {
 	.set_rate = clk_alpha_pll_stromer_plus_set_rate,
 };
 EXPORT_SYMBOL_GPL(clk_alpha_pll_stromer_plus_ops);
+
+void clk_regera_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+			     const struct alpha_pll_config *config)
+{
+	clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), config->l);
+	clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha);
+	clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL(pll), config->config_ctl_val);
+	clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U(pll), config->config_ctl_hi_val);
+	clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U1(pll), config->config_ctl_hi1_val);
+	clk_alpha_pll_write_config(regmap, PLL_USER_CTL(pll), config->user_ctl_val);
+	clk_alpha_pll_write_config(regmap, PLL_USER_CTL_U(pll), config->user_ctl_hi_val);
+	clk_alpha_pll_write_config(regmap, PLL_USER_CTL_U1(pll), config->user_ctl_hi1_val);
+	clk_alpha_pll_write_config(regmap, PLL_TEST_CTL(pll), config->test_ctl_val);
+	clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U(pll), config->test_ctl_hi_val);
+	clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U1(pll), config->test_ctl_hi1_val);
+
+	/* Set operation mode to STANDBY */
+	regmap_write(regmap, PLL_OPMODE(pll), PLL_STANDBY);
+}
+EXPORT_SYMBOL_GPL(clk_regera_pll_configure);
+
+const struct clk_ops clk_alpha_pll_regera_ops = {
+	.enable = clk_zonda_pll_enable,
+	.disable = clk_zonda_pll_disable,
+	.is_enabled = clk_alpha_pll_is_enabled,
+	.recalc_rate = clk_trion_pll_recalc_rate,
+	.round_rate = clk_alpha_pll_round_rate,
+	.set_rate = clk_zonda_pll_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_regera_ops);
diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index df8f0fe15531..40e938b59c3e 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -23,6 +23,7 @@ enum {
 	CLK_ALPHA_PLL_TYPE_LUCID = CLK_ALPHA_PLL_TYPE_TRION,
 	CLK_ALPHA_PLL_TYPE_AGERA,
 	CLK_ALPHA_PLL_TYPE_ZONDA,
+	CLK_ALPHA_PLL_TYPE_REGERA = CLK_ALPHA_PLL_TYPE_ZONDA,
 	CLK_ALPHA_PLL_TYPE_ZONDA_OLE,
 	CLK_ALPHA_PLL_TYPE_LUCID_EVO,
 	CLK_ALPHA_PLL_TYPE_LUCID_OLE,
@@ -193,6 +194,8 @@ extern const struct clk_ops clk_alpha_pll_postdiv_lucid_evo_ops;
 extern const struct clk_ops clk_alpha_pll_rivian_evo_ops;
 #define clk_alpha_pll_postdiv_rivian_evo_ops clk_alpha_pll_postdiv_fabia_ops
 
+extern const struct clk_ops clk_alpha_pll_regera_ops;
+
 void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
 			     const struct alpha_pll_config *config);
 void clk_huayra_2290_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
@@ -216,5 +219,7 @@ void clk_rivian_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regm
 				  const struct alpha_pll_config *config);
 void clk_stromer_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
 			       const struct alpha_pll_config *config);
+void clk_regera_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+			     const struct alpha_pll_config *config);
 
 #endif