[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/clk/hisilicon/clkgate-separated.c b/src/kernel/linux/v4.14/drivers/clk/hisilicon/clkgate-separated.c
new file mode 100644
index 0000000..7908bc3
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/clk/hisilicon/clkgate-separated.c
@@ -0,0 +1,129 @@
+/*
+ * Hisilicon clock separated gate driver
+ *
+ * Copyright (c) 2012-2013 Hisilicon Limited.
+ * Copyright (c) 2012-2013 Linaro Limited.
+ *
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
+ * Xin Li <li.xin@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#include "clk.h"
+
+/* clock separated gate register offset */
+#define CLKGATE_SEPERATED_ENABLE 0x0
+#define CLKGATE_SEPERATED_DISABLE 0x4
+#define CLKGATE_SEPERATED_STATUS 0x8
+
+struct clkgate_separated {
+ struct clk_hw hw;
+ void __iomem *enable; /* enable register */
+ u8 bit_idx; /* bits in enable/disable register */
+ u8 flags;
+ spinlock_t *lock;
+};
+
+static int clkgate_separated_enable(struct clk_hw *hw)
+{
+ struct clkgate_separated *sclk;
+ unsigned long flags = 0;
+ u32 reg;
+
+ sclk = container_of(hw, struct clkgate_separated, hw);
+ if (sclk->lock)
+ spin_lock_irqsave(sclk->lock, flags);
+ reg = BIT(sclk->bit_idx);
+ writel_relaxed(reg, sclk->enable);
+ readl_relaxed(sclk->enable + CLKGATE_SEPERATED_STATUS);
+ if (sclk->lock)
+ spin_unlock_irqrestore(sclk->lock, flags);
+ return 0;
+}
+
+static void clkgate_separated_disable(struct clk_hw *hw)
+{
+ struct clkgate_separated *sclk;
+ unsigned long flags = 0;
+ u32 reg;
+
+ sclk = container_of(hw, struct clkgate_separated, hw);
+ if (sclk->lock)
+ spin_lock_irqsave(sclk->lock, flags);
+ reg = BIT(sclk->bit_idx);
+ writel_relaxed(reg, sclk->enable + CLKGATE_SEPERATED_DISABLE);
+ readl_relaxed(sclk->enable + CLKGATE_SEPERATED_STATUS);
+ if (sclk->lock)
+ spin_unlock_irqrestore(sclk->lock, flags);
+}
+
+static int clkgate_separated_is_enabled(struct clk_hw *hw)
+{
+ struct clkgate_separated *sclk;
+ u32 reg;
+
+ sclk = container_of(hw, struct clkgate_separated, hw);
+ reg = readl_relaxed(sclk->enable + CLKGATE_SEPERATED_STATUS);
+ reg &= BIT(sclk->bit_idx);
+
+ return reg ? 1 : 0;
+}
+
+static struct clk_ops clkgate_separated_ops = {
+ .enable = clkgate_separated_enable,
+ .disable = clkgate_separated_disable,
+ .is_enabled = clkgate_separated_is_enabled,
+};
+
+struct clk *hisi_register_clkgate_sep(struct device *dev, const char *name,
+ const char *parent_name,
+ unsigned long flags,
+ void __iomem *reg, u8 bit_idx,
+ u8 clk_gate_flags, spinlock_t *lock)
+{
+ struct clkgate_separated *sclk;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ sclk = kzalloc(sizeof(*sclk), GFP_KERNEL);
+ if (!sclk) {
+ pr_err("%s: fail to allocate separated gated clk\n", __func__);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ init.name = name;
+ init.ops = &clkgate_separated_ops;
+ init.flags = flags | CLK_IS_BASIC;
+ init.parent_names = (parent_name ? &parent_name : NULL);
+ init.num_parents = (parent_name ? 1 : 0);
+
+ sclk->enable = reg + CLKGATE_SEPERATED_ENABLE;
+ sclk->bit_idx = bit_idx;
+ sclk->flags = clk_gate_flags;
+ sclk->hw.init = &init;
+ sclk->lock = lock;
+
+ clk = clk_register(dev, &sclk->hw);
+ if (IS_ERR(clk))
+ kfree(sclk);
+ return clk;
+}