clk: qcom: support for alpha pll properties

Alpha PLL is a generic name used for QCOM PLLs which uses L and
Alpha values for configuring the integer and fractional part.
QCOM SoCs use different types of Alpha PLLs for which basic
software configuration part is common with following differences.

  1. All these PLLs have the same basic registers like
     PLL_MODE, L_VAL, ALPHA_VAL but some of the register offsets are
     different between PLLs types.

  2. The dynamic programming sequence is different in some
     of the Alpha PLLs

  3. Some of the PLLs don’t have 64 bit config control, 64 bit
     user control, VCO configuration, etc.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index d6e1ee2c7348..ef7c75effbfe 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -17,6 +17,28 @@
 #include <linux/clk-provider.h>
 #include "clk-regmap.h"
 
+/* Alpha PLL types */
+enum {
+	CLK_ALPHA_PLL_TYPE_DEFAULT,
+	CLK_ALPHA_PLL_TYPE_MAX,
+};
+
+enum {
+	PLL_OFF_L_VAL,
+	PLL_OFF_ALPHA_VAL,
+	PLL_OFF_ALPHA_VAL_U,
+	PLL_OFF_USER_CTL,
+	PLL_OFF_USER_CTL_U,
+	PLL_OFF_CONFIG_CTL,
+	PLL_OFF_CONFIG_CTL_U,
+	PLL_OFF_TEST_CTL,
+	PLL_OFF_TEST_CTL_U,
+	PLL_OFF_STATUS,
+	PLL_OFF_MAX_REGS
+};
+
+extern const u8 clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_MAX][PLL_OFF_MAX_REGS];
+
 struct pll_vco {
 	unsigned long min_freq;
 	unsigned long max_freq;
@@ -27,10 +49,12 @@ struct pll_vco {
  * struct clk_alpha_pll - phase locked loop (PLL)
  * @offset: base address of registers
  * @vco_table: array of VCO settings
+ * @regs: alpha pll register map (see @clk_alpha_pll_regs)
  * @clkr: regmap clock handle
  */
 struct clk_alpha_pll {
 	u32 offset;
+	const u8 *regs;
 
 	const struct pll_vco *vco_table;
 	size_t num_vco;
@@ -45,12 +69,14 @@ struct clk_alpha_pll {
 /**
  * struct clk_alpha_pll_postdiv - phase locked loop (PLL) post-divider
  * @offset: base address of registers
+ * @regs: alpha pll register map (see @clk_alpha_pll_regs)
  * @width: width of post-divider
  * @clkr: regmap clock handle
  */
 struct clk_alpha_pll_postdiv {
 	u32 offset;
 	u8 width;
+	const u8 *regs;
 
 	struct clk_regmap clkr;
 };