diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.14/0044-clk-Add-safe-switch-hook.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.14/0044-clk-Add-safe-switch-hook.patch | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/target/linux/ipq806x/patches-4.14/0044-clk-Add-safe-switch-hook.patch b/target/linux/ipq806x/patches-4.14/0044-clk-Add-safe-switch-hook.patch index b2468a9609..d0eddc64c2 100644 --- a/target/linux/ipq806x/patches-4.14/0044-clk-Add-safe-switch-hook.patch +++ b/target/linux/ipq806x/patches-4.14/0044-clk-Add-safe-switch-hook.patch @@ -31,32 +31,32 @@ Signed-off-by: Sricharan R <sricharan@codeaurora.org> --- a/drivers/clk/qcom/clk-krait.c +++ b/drivers/clk/qcom/clk-krait.c @@ -60,6 +60,8 @@ static int krait_mux_set_parent(struct c - if (__clk_is_enabled(hw->clk)) - __krait_mux_set_sel(mux, sel); - + if (__clk_is_enabled(hw->clk)) + __krait_mux_set_sel(mux, sel); + + mux->reparent = true; + - return 0; + return 0; } - + --- a/drivers/clk/qcom/clk-krait.h +++ b/drivers/clk/qcom/clk-krait.h @@ -23,6 +23,9 @@ struct krait_mux_clk { - u32 shift; - u32 en_mask; - bool lpl; + u32 shift; + u32 en_mask; + bool lpl; + u8 safe_sel; + u8 old_index; + bool reparent; - - struct clk_hw hw; - struct notifier_block clk_nb; + + struct clk_hw hw; + struct notifier_block clk_nb; --- a/drivers/clk/qcom/krait-cc.c +++ b/drivers/clk/qcom/krait-cc.c @@ -35,6 +35,49 @@ static unsigned int pri_mux_map[] = { - 0, + 0, }; - + +/* + * Notifier function for switching the muxes to safe parent + * while the hfpll is getting reprogrammed. @@ -105,56 +105,56 @@ Signed-off-by: Sricharan R <sricharan@codeaurora.org> { @@ -79,6 +122,7 @@ static int krait_add_sec_mux(struct device *dev, int id, const char *s, - unsigned int offset, bool unique_aux) + unsigned int offset, bool unique_aux) { + int ret; - struct krait_mux_clk *mux; - static const char *sec_mux_list[] = { - "acpu_aux", + struct krait_mux_clk *mux; + static const char *sec_mux_list[] = { + "acpu_aux", @@ -102,6 +146,7 @@ krait_add_sec_mux(struct device *dev, in - mux->shift = 2; - mux->parent_map = sec_mux_map; - mux->hw.init = &init; + mux->shift = 2; + mux->parent_map = sec_mux_map; + mux->hw.init = &init; + mux->safe_sel = 0; - - init.name = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s); - if (!init.name) + + init.name = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s); + if (!init.name) @@ -117,6 +162,11 @@ krait_add_sec_mux(struct device *dev, in - - clk = devm_clk_register(dev, &mux->hw); - + + clk = devm_clk_register(dev, &mux->hw); + + ret = krait_notifier_register(dev, clk, mux); + if (ret) + goto unique_aux; + +unique_aux: - if (unique_aux) - kfree(sec_mux_list[0]); + if (unique_aux) + kfree(sec_mux_list[0]); err_aux: @@ -128,6 +178,7 @@ static struct clk * krait_add_pri_mux(struct device *dev, int id, const char *s, - unsigned int offset) + unsigned int offset) { + int ret; - struct krait_mux_clk *mux; - const char *p_names[3]; - struct clk_init_data init = { + struct krait_mux_clk *mux; + const char *p_names[3]; + struct clk_init_data init = { @@ -148,6 +199,7 @@ krait_add_pri_mux(struct device *dev, in - mux->lpl = id >= 0; - mux->parent_map = pri_mux_map; - mux->hw.init = &init; + mux->lpl = id >= 0; + mux->parent_map = pri_mux_map; + mux->hw.init = &init; + mux->safe_sel = 2; - - init.name = kasprintf(GFP_KERNEL, "krait%s_pri_mux", s); - if (!init.name) + + init.name = kasprintf(GFP_KERNEL, "krait%s_pri_mux", s); + if (!init.name) @@ -173,6 +225,10 @@ krait_add_pri_mux(struct device *dev, in - - clk = devm_clk_register(dev, &mux->hw); - + + clk = devm_clk_register(dev, &mux->hw); + + ret = krait_notifier_register(dev, clk, mux); + if (ret) + goto err_p3; +err_p3: - kfree(p_names[2]); + kfree(p_names[2]); err_p2: - kfree(p_names[1]); + kfree(p_names[1]); |