[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/clk/rockchip/clk-muxgrf.c b/src/kernel/linux/v4.14/drivers/clk/rockchip/clk-muxgrf.c
new file mode 100644
index 0000000..4f29118
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/clk/rockchip/clk-muxgrf.c
@@ -0,0 +1,102 @@
+/*
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/slab.h>
+#include <linux/bitops.h>
+#include <linux/regmap.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include "clk.h"
+
+struct rockchip_muxgrf_clock {
+ struct clk_hw hw;
+ struct regmap *regmap;
+ u32 reg;
+ u32 shift;
+ u32 width;
+ int flags;
+};
+
+#define to_muxgrf_clock(_hw) container_of(_hw, struct rockchip_muxgrf_clock, hw)
+
+static u8 rockchip_muxgrf_get_parent(struct clk_hw *hw)
+{
+ struct rockchip_muxgrf_clock *mux = to_muxgrf_clock(hw);
+ unsigned int mask = GENMASK(mux->width - 1, 0);
+ unsigned int val;
+
+ regmap_read(mux->regmap, mux->reg, &val);
+
+ val >>= mux->shift;
+ val &= mask;
+
+ return val;
+}
+
+static int rockchip_muxgrf_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct rockchip_muxgrf_clock *mux = to_muxgrf_clock(hw);
+ unsigned int mask = GENMASK(mux->width + mux->shift - 1, mux->shift);
+ unsigned int val;
+
+ val = index;
+ val <<= mux->shift;
+
+ if (mux->flags & CLK_MUX_HIWORD_MASK)
+ return regmap_write(mux->regmap, mux->reg, val | (mask << 16));
+ else
+ return regmap_update_bits(mux->regmap, mux->reg, mask, val);
+}
+
+static const struct clk_ops rockchip_muxgrf_clk_ops = {
+ .get_parent = rockchip_muxgrf_get_parent,
+ .set_parent = rockchip_muxgrf_set_parent,
+ .determine_rate = __clk_mux_determine_rate,
+};
+
+struct clk *rockchip_clk_register_muxgrf(const char *name,
+ const char *const *parent_names, u8 num_parents,
+ int flags, struct regmap *regmap, int reg,
+ int shift, int width, int mux_flags)
+{
+ struct rockchip_muxgrf_clock *muxgrf_clock;
+ struct clk_init_data init;
+ struct clk *clk;
+
+ if (IS_ERR(regmap)) {
+ pr_err("%s: regmap not available\n", __func__);
+ return ERR_PTR(-ENOTSUPP);
+ }
+
+ muxgrf_clock = kmalloc(sizeof(*muxgrf_clock), GFP_KERNEL);
+ if (!muxgrf_clock)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.flags = flags;
+ init.num_parents = num_parents;
+ init.parent_names = parent_names;
+ init.ops = &rockchip_muxgrf_clk_ops;
+
+ muxgrf_clock->hw.init = &init;
+ muxgrf_clock->regmap = regmap;
+ muxgrf_clock->reg = reg;
+ muxgrf_clock->shift = shift;
+ muxgrf_clock->width = width;
+ muxgrf_clock->flags = mux_flags;
+
+ clk = clk_register(NULL, &muxgrf_clock->hw);
+ if (IS_ERR(clk))
+ kfree(muxgrf_clock);
+
+ return clk;
+}