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Subject[PATCH v4 2/3] clk: zynqmp: Use firmware specific divider clock flags
Date
From: Rajan Vaja <rajan.vaja@xilinx.com>

Use ZynqMP specific divider clock flags instead of using CCF flags.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Amit Sunil Dhamne <amit.sunil.dhamne@xilinx.com>
---
drivers/clk/zynqmp/clk-zynqmp.h | 9 +++++++++
drivers/clk/zynqmp/divider.c | 25 ++++++++++++++++++++++++-
2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/zynqmp/clk-zynqmp.h b/drivers/clk/zynqmp/clk-zynqmp.h
index 974d3da..9b2ff35e 100644
--- a/drivers/clk/zynqmp/clk-zynqmp.h
+++ b/drivers/clk/zynqmp/clk-zynqmp.h
@@ -32,6 +32,15 @@
/* do not gate, ever */
#define ZYNQMP_CLK_IS_CRITICAL BIT(11)

+/* Type Flags for divider clock */
+#define ZYNQMP_CLK_DIVIDER_ONE_BASED BIT(0)
+#define ZYNQMP_CLK_DIVIDER_POWER_OF_TWO BIT(1)
+#define ZYNQMP_CLK_DIVIDER_ALLOW_ZERO BIT(2)
+#define ZYNQMP_CLK_DIVIDER_HIWORD_MASK BIT(3)
+#define ZYNQMP_CLK_DIVIDER_ROUND_CLOSEST BIT(4)
+#define ZYNQMP_CLK_DIVIDER_READ_ONLY BIT(5)
+#define ZYNQMP_CLK_DIVIDER_MAX_AT_ZERO BIT(6)
+
enum topology_type {
TYPE_INVALID,
TYPE_MUX,
diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c
index 775d54f..14adba0 100644
--- a/drivers/clk/zynqmp/divider.c
+++ b/drivers/clk/zynqmp/divider.c
@@ -283,6 +283,29 @@ static u32 zynqmp_clk_get_max_divisor(u32 clk_id, u32 type)
return ret_payload[1];
}

+static inline unsigned long zynqmp_clk_map_divider_ccf_flags(
+ const u32 zynqmp_type_flag)
+{
+ unsigned long ccf_flag = 0;
+
+ if (zynqmp_type_flag & ZYNQMP_CLK_DIVIDER_ONE_BASED)
+ ccf_flag |= CLK_DIVIDER_ONE_BASED;
+ if (zynqmp_type_flag & ZYNQMP_CLK_DIVIDER_POWER_OF_TWO)
+ ccf_flag |= CLK_DIVIDER_POWER_OF_TWO;
+ if (zynqmp_type_flag & ZYNQMP_CLK_DIVIDER_ALLOW_ZERO)
+ ccf_flag |= CLK_DIVIDER_ALLOW_ZERO;
+ if (zynqmp_type_flag & ZYNQMP_CLK_DIVIDER_POWER_OF_TWO)
+ ccf_flag |= CLK_DIVIDER_HIWORD_MASK;
+ if (zynqmp_type_flag & ZYNQMP_CLK_DIVIDER_ROUND_CLOSEST)
+ ccf_flag |= CLK_DIVIDER_ROUND_CLOSEST;
+ if (zynqmp_type_flag & ZYNQMP_CLK_DIVIDER_READ_ONLY)
+ ccf_flag |= CLK_DIVIDER_READ_ONLY;
+ if (zynqmp_type_flag & ZYNQMP_CLK_DIVIDER_MAX_AT_ZERO)
+ ccf_flag |= CLK_DIVIDER_MAX_AT_ZERO;
+
+ return ccf_flag;
+}
+
/**
* zynqmp_clk_register_divider() - Register a divider clock
* @name: Name of this clock
@@ -320,7 +343,7 @@ struct clk_hw *zynqmp_clk_register_divider(const char *name,
/* struct clk_divider assignments */
div->is_frac = !!((nodes->flag & CLK_FRAC) |
(nodes->custom_type_flag & CUSTOM_FLAG_CLK_FRAC));
- div->flags = nodes->type_flag;
+ div->flags = zynqmp_clk_map_divider_ccf_flags(nodes->type_flag);
div->hw.init = &init;
div->clk_id = clk_id;
div->div_type = nodes->type;
--
2.7.4
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