[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/clk/sprd/div.c b/src/kernel/linux/v4.19/drivers/clk/sprd/div.c
new file mode 100644
index 0000000..7621a1d
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/clk/sprd/div.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Spreadtrum divider clock driver
+//
+// Copyright (C) 2017 Spreadtrum, Inc.
+// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
+
+#include <linux/clk-provider.h>
+
+#include "div.h"
+
+long sprd_div_helper_round_rate(struct sprd_clk_common *common,
+ const struct sprd_div_internal *div,
+ unsigned long rate,
+ unsigned long *parent_rate)
+{
+ return divider_round_rate(&common->hw, rate, parent_rate,
+ NULL, div->width, 0);
+}
+EXPORT_SYMBOL_GPL(sprd_div_helper_round_rate);
+
+static long sprd_div_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct sprd_div *cd = hw_to_sprd_div(hw);
+
+ return sprd_div_helper_round_rate(&cd->common, &cd->div,
+ rate, parent_rate);
+}
+
+unsigned long sprd_div_helper_recalc_rate(struct sprd_clk_common *common,
+ const struct sprd_div_internal *div,
+ unsigned long parent_rate)
+{
+ unsigned long val;
+ unsigned int reg;
+
+ regmap_read(common->regmap, common->reg, ®);
+ val = reg >> div->shift;
+ val &= (1 << div->width) - 1;
+
+ return divider_recalc_rate(&common->hw, parent_rate, val, NULL, 0,
+ div->width);
+}
+EXPORT_SYMBOL_GPL(sprd_div_helper_recalc_rate);
+
+static unsigned long sprd_div_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct sprd_div *cd = hw_to_sprd_div(hw);
+
+ return sprd_div_helper_recalc_rate(&cd->common, &cd->div, parent_rate);
+}
+
+int sprd_div_helper_set_rate(const struct sprd_clk_common *common,
+ const struct sprd_div_internal *div,
+ unsigned long rate,
+ unsigned long parent_rate)
+{
+ unsigned long val;
+ unsigned int reg;
+
+ val = divider_get_val(rate, parent_rate, NULL,
+ div->width, 0);
+
+ regmap_read(common->regmap, common->reg, ®);
+ reg &= ~GENMASK(div->width + div->shift - 1, div->shift);
+
+ regmap_write(common->regmap, common->reg,
+ reg | (val << div->shift));
+
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(sprd_div_helper_set_rate);
+
+static int sprd_div_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct sprd_div *cd = hw_to_sprd_div(hw);
+
+ return sprd_div_helper_set_rate(&cd->common, &cd->div,
+ rate, parent_rate);
+}
+
+const struct clk_ops sprd_div_ops = {
+ .recalc_rate = sprd_div_recalc_rate,
+ .round_rate = sprd_div_round_rate,
+ .set_rate = sprd_div_set_rate,
+};
+EXPORT_SYMBOL_GPL(sprd_div_ops);