[PATCH v2 03/10] clk: qcom: Add support to initialize alpha plls

Rajendra Nayak
2016-08-11T08:44:43Z

Add a function to do initial configuration of the alpha plls

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
---
drivers/clk/qcom/clk-alpha-pll.c | 23 +++++++++++++++++++++++
drivers/clk/qcom/clk-alpha-pll.h | 13 +++++++++++++
2 files changed, 36 insertions(+)

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index bae31f9..8b8710f 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -112,6 +112,29 @@ static int wait_for_pll_offline(struct clk_alpha_pll *pll, u32 mask)
#define PLL_OFFLINE_ACK BIT(28)
#define PLL_ACTIVE_FLAG BIT(30)

+void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+ const struct alpha_pll_config *config)
+{
+ u32 val, mask;
+
+ regmap_write(regmap, pll->offset + PLL_CONFIG_CTL,
+ config->config_ctl_val);
+
+ val = config->main_output_mask;
+ val |= config->aux_output_mask;
+ val |= config->aux2_output_mask;
+ val |= config->early_output_mask;
+ val |= config->post_div_val;
+
+ mask = config->main_output_mask;
+ mask |= config->aux_output_mask;
+ mask |= config->aux2_output_mask;
+ mask |= config->early_output_mask;
+ mask |= config->post_div_mask;
+
+ regmap_update_bits(regmap, pll->offset + PLL_USER_CTL, mask, val);
+}
+
static int clk_alpha_pll_hwfsm_enable(struct clk_hw *hw)
{
int ret;
diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index f78bf4c..12a349e 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -51,8 +51,21 @@ struct clk_alpha_pll_postdiv {
struct clk_regmap clkr;
};

+struct alpha_pll_config {
+ u32 config_ctl_val;
+ u32 main_output_mask;
+ u32 aux_output_mask;
+ u32 aux2_output_mask;
+ u32 early_output_mask;
+ u32 post_div_val;
+ u32 post_div_mask;
+};
+
extern const struct clk_ops clk_alpha_pll_ops;
extern const struct clk_ops clk_alpha_pll_hwfsm_ops;
extern const struct clk_ops clk_alpha_pll_postdiv_ops;

+void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+ const struct alpha_pll_config *config);
+
#endif
--
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