[PATCH V2 2/5] clk: imx: Add support for i.MX8M hw based clk provider
From: Anson Huang
Date: Tue Jan 07 2020 - 04:34:55 EST
Add hw based provider support for i.MX8M composite clk, pll14xx
clk and other gate/mux clk APIs, so that new added i.MX8M SoCs
can use hw based clk provider.
Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
---
New patch.
---
drivers/clk/imx/clk-composite-8m.c | 4 ++--
drivers/clk/imx/clk-pll14xx.c | 18 +++++++++-------
drivers/clk/imx/clk.h | 42 +++++++++++++++++++++++++++++++++-----
3 files changed, 50 insertions(+), 14 deletions(-)
diff --git a/drivers/clk/imx/clk-composite-8m.c b/drivers/clk/imx/clk-composite-8m.c
index d3486ee..20f7c91 100644
--- a/drivers/clk/imx/clk-composite-8m.c
+++ b/drivers/clk/imx/clk-composite-8m.c
@@ -123,7 +123,7 @@ static const struct clk_ops imx8m_clk_composite_divider_ops = {
.set_rate = imx8m_clk_composite_divider_set_rate,
};
-struct clk *imx8m_clk_composite_flags(const char *name,
+struct clk_hw *imx8m_clk_hw_composite_flags(const char *name,
const char * const *parent_names,
int num_parents, void __iomem *reg,
unsigned long flags)
@@ -171,7 +171,7 @@ struct clk *imx8m_clk_composite_flags(const char *name,
if (IS_ERR(hw))
goto fail;
- return hw->clk;
+ return hw;
fail:
kfree(gate);
diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c
index e238427..db12fb6 100644
--- a/drivers/clk/imx/clk-pll14xx.c
+++ b/drivers/clk/imx/clk-pll14xx.c
@@ -376,14 +376,15 @@ static const struct clk_ops clk_pll1443x_ops = {
.set_rate = clk_pll1443x_set_rate,
};
-struct clk *imx_clk_pll14xx(const char *name, const char *parent_name,
+struct clk_hw *imx_clk_hw_pll14xx(const char *name, const char *parent_name,
void __iomem *base,
const struct imx_pll14xx_clk *pll_clk)
{
struct clk_pll14xx *pll;
- struct clk *clk;
+ struct clk_hw *hw;
struct clk_init_data init;
u32 val;
+ int ret;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll)
@@ -415,16 +416,19 @@ struct clk *imx_clk_pll14xx(const char *name, const char *parent_name,
pll->rate_table = pll_clk->rate_table;
pll->rate_count = pll_clk->rate_count;
+ hw = &pll->hw;
+
val = readl_relaxed(pll->base + GNRL_CTL);
val &= ~BYPASS_MASK;
writel_relaxed(val, pll->base + GNRL_CTL);
- clk = clk_register(NULL, &pll->hw);
- if (IS_ERR(clk)) {
- pr_err("%s: failed to register pll %s %lu\n",
- __func__, name, PTR_ERR(clk));
+ ret = clk_hw_register(NULL, hw);
+ if (ret) {
+ pr_err("%s: failed to register pll %s %d\n",
+ __func__, name, ret);
kfree(pll);
+ return ERR_PTR(ret);
}
- return clk;
+ return hw;
}
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index afc7947..90f9ab8 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -123,8 +123,13 @@ extern struct imx_pll14xx_clk imx_1443x_dram_pll;
bypass1, bypass2, base, flags) \
to_clk(imx_clk_hw_sscg_pll(name, parent_names, num_parents, parent,\
bypass1, bypass2, base, flags))
+#define imx_clk_pll14xx(name, parent_name, base, pll_clk) \
+ to_clk(imx_clk_hw_pll14xx(name, parent_name, base, pll_clk))
-struct clk *imx_clk_pll14xx(const char *name, const char *parent_name,
+#define imx8m_clk_composite_flags(name, parent_names, num_parents, reg, flags) \
+ to_clk(imx8m_clk_hw_composite_flags(name, parent_names, num_parents, reg, flags))
+
+struct clk_hw *imx_clk_hw_pll14xx(const char *name, const char *parent_name,
void __iomem *base, const struct imx_pll14xx_clk *pll_clk);
struct clk_hw *imx_clk_hw_pllv1(enum imx_pllv1_type type, const char *name,
@@ -388,6 +393,14 @@ static inline struct clk *imx_clk_gate4_flags(const char *name,
reg, shift, 0x3, 0, &imx_ccm_lock, NULL);
}
+static inline struct clk_hw *imx_clk_hw_gate4_flags(const char *name, const char *parent,
+ void __iomem *reg, u8 shift, unsigned long flags)
+{
+ return clk_hw_register_gate2(NULL, name, parent,
+ flags | CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+ reg, shift, 0x3, 0, &imx_ccm_lock, NULL);
+}
+
static inline struct clk_hw *imx_clk_hw_mux(const char *name, void __iomem *reg,
u8 shift, u8 width, const char * const *parents,
int num_parents)
@@ -437,6 +450,15 @@ static inline struct clk *imx_clk_mux2_flags(const char *name,
reg, shift, width, 0, &imx_ccm_lock);
}
+static inline struct clk_hw *imx_clk_hw_mux2_flags(const char *name, void __iomem *reg,
+ u8 shift, u8 width, const char * const *parents,
+ int num_parents, unsigned long flags)
+{
+ return clk_hw_register_mux(NULL, name, parents, num_parents,
+ flags | CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE,
+ reg, shift, width, 0, &imx_ccm_lock);
+}
+
static inline struct clk_hw *imx_clk_hw_mux_flags(const char *name,
void __iomem *reg, u8 shift,
u8 width,
@@ -453,10 +475,9 @@ struct clk_hw *imx_clk_hw_cpu(const char *name, const char *parent_name,
struct clk *div, struct clk *mux, struct clk *pll,
struct clk *step);
-struct clk *imx8m_clk_composite_flags(const char *name,
- const char * const *parent_names,
- int num_parents, void __iomem *reg,
- unsigned long flags);
+struct clk_hw *imx8m_clk_hw_composite_flags(const char *name,
+ const char * const *parent_names, int num_parents,
+ void __iomem *reg, unsigned long flags);
#define __imx8m_clk_composite(name, parent_names, reg, flags) \
imx8m_clk_composite_flags(name, parent_names, \
@@ -469,6 +490,17 @@ struct clk *imx8m_clk_composite_flags(const char *name,
#define imx8m_clk_composite_critical(name, parent_names, reg) \
__imx8m_clk_composite(name, parent_names, reg, CLK_IS_CRITICAL)
+#define __imx8m_clk_hw_composite(name, parent_names, reg, flags) \
+ imx8m_clk_hw_composite_flags(name, parent_names, \
+ ARRAY_SIZE(parent_names), reg, \
+ flags | CLK_SET_RATE_NO_REPARENT | CLK_OPS_PARENT_ENABLE)
+
+#define imx8m_clk_hw_composite(name, parent_names, reg) \
+ __imx8m_clk_hw_composite(name, parent_names, reg, 0)
+
+#define imx8m_clk_hw_composite_critical(name, parent_names, reg) \
+ __imx8m_clk_hw_composite(name, parent_names, reg, CLK_IS_CRITICAL)
+
struct clk_hw *imx_clk_hw_divider_gate(const char *name, const char *parent_name,
unsigned long flags, void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, const struct clk_div_table *table,
--
2.7.4