[v3,02/11] clk: qcom: Add support to initialize alpha plls

Commit Message

Rajendra Nayak Sept. 29, 2016, 8:35 a.m. UTC

Add a function to do initial configuration of the alpha plls

Signed-off-by: Rajendra Nayak <[e-mail]>
---
 drivers/clk/qcom/clk-alpha-pll.c | 31 +++++++++++++++++++++++++++++++
 drivers/clk/qcom/clk-alpha-pll.h | 20 ++++++++++++++++++++
 2 files changed, 51 insertions(+)

Comments

Stephen Boyd Nov. 2, 2016, 9:51 p.m. UTC | #1

On 09/29, Rajendra Nayak wrote:
> Add a function to do initial configuration of the alpha plls
> 
> Signed-off-by: Rajendra Nayak <[e-mail]>
> ---

Applied to clk-next

Patch

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 0cfbb29..a1188c8 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -49,6 +49,7 @@ 
 #define PLL_USER_CTL_U		0x14
 
 #define PLL_CONFIG_CTL		0x18
+#define PLL_CONFIG_CTL_U	0x20
 #define PLL_TEST_CTL		0x1c
 #define PLL_TEST_CTL_U		0x20
 #define PLL_STATUS		0x24
@@ -106,6 +107,36 @@  static int wait_for_pll(struct clk_alpha_pll *pll, u32 mask, bool inverse,
 #define wait_for_pll_offline(pll) \
 	wait_for_pll(pll, PLL_OFFLINE_ACK, 0, "offline")
 
+void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+			     const struct alpha_pll_config *config)
+{
+	u32 val, mask;
+	u32 off = pll->offset;
+
+	regmap_write(regmap, off + PLL_L_VAL, config->l);
+	regmap_write(regmap, off + PLL_ALPHA_VAL, config->alpha);
+	regmap_write(regmap, off + PLL_CONFIG_CTL, config->config_ctl_val);
+	regmap_write(regmap, off + PLL_CONFIG_CTL_U, config->config_ctl_hi_val);
+
+	val = config->main_output_mask;
+	val |= config->aux_output_mask;
+	val |= config->aux2_output_mask;
+	val |= config->early_output_mask;
+	val |= config->pre_div_val;
+	val |= config->post_div_val;
+	val |= config->vco_val;
+
+	mask = config->main_output_mask;
+	mask |= config->aux_output_mask;
+	mask |= config->aux2_output_mask;
+	mask |= config->early_output_mask;
+	mask |= config->pre_div_mask;
+	mask |= config->post_div_mask;
+	mask |= config->vco_mask;
+
+	regmap_update_bits(regmap, off + 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 0deb286..2f48530 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -53,8 +53,28 @@  struct clk_alpha_pll_postdiv {
 	struct clk_regmap clkr;
 };
 
+struct alpha_pll_config {
+	u32 l;
+	u32 alpha;
+	u32 config_ctl_val;
+	u32 config_ctl_hi_val;
+	u32 main_output_mask;
+	u32 aux_output_mask;
+	u32 aux2_output_mask;
+	u32 early_output_mask;
+	u32 pre_div_val;
+	u32 pre_div_mask;
+	u32 post_div_val;
+	u32 post_div_mask;
+	u32 vco_val;
+	u32 vco_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