Thread (35 messages) 35 messages, 5 authors, 2018-11-05

[PATCH v5 3/3] clk: meson: add sub MMC clock controller driver

From: sboyd@kernel.org (Stephen Boyd)
Date: 2018-10-19 18:03:33
Also in: linux-amlogic, linux-clk, lkml

Quoting Jianxin Pan (2018-10-19 09:12:53)
On 2018/10/19 1:13, Stephen Boyd wrote:
quoted
Quoting Jianxin Pan (2018-10-17 22:07:25)
quoted
diff --git a/drivers/clk/meson/clk-regmap.c b/drivers/clk/meson/clk-regmap.c
index 305ee30..f96314d 100644
--- a/drivers/clk/meson/clk-regmap.c
+++ b/drivers/clk/meson/clk-regmap.c
@@ -113,8 +113,25 @@ static int clk_regmap_div_set_rate(struct clk_hw *hw, unsigned long rate,
                                  clk_div_mask(div->width) << div->shift, val);
 };
 
-/* Would prefer clk_regmap_div_ro_ops but clashes with qcom */
+static void clk_regmap_div_init(struct clk_hw *hw)
+{
+       struct clk_regmap *clk = to_clk_regmap(hw);
+       struct clk_regmap_div_data *div = clk_get_regmap_div_data(clk);
+       unsigned int val;
+       int ret;
+
+       ret = regmap_read(clk->map, div->offset, &val);
+       if (ret)
+               return;
 
+       val &= (clk_div_mask(div->width) << div->shift);
+       if (!val)
+               regmap_update_bits(clk->map, div->offset,
+                                  clk_div_mask(div->width) << div->shift,
+                                  clk_div_mask(div->width));
+}
+
+/* Would prefer clk_regmap_div_ro_ops but clashes with qcom */
We should add a patch to rename the symbol for qcom, i.e.
qcom_clk_regmap_div_ro_ops, and then any symbols in this directory
should be meson_clk_regmap_div_ro_ops.
"/* Would prefer clk_regmap_div_ro_ops but clashes with qcom */"
This comment is not introduced in this patch.
I followed the naming style in this file and add clk_regmap_divider_with_init_ops.

@Jerome? What's your suggestion about this?
Yes you don't need to fix anything in this series. Just saying that in
the future we should work on cleaning this up.
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