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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-09 12:06:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-09 12:06:24 -0700
commit6419945e3313fd894af79caefca6823d4511133f (patch)
treef6bc2ac4f5820f4bfada3a9e9abc7e52a8ea69cb /drivers/clk/actions/owl-composite.c
parentd60dafdca4b463405e5586df923f05b10e9ac2f9 (diff)
parent55913c2d33307ac11797531ebbe7c122a73cc0fd (diff)
downloadlwn-6419945e3313fd894af79caefca6823d4511133f.tar.gz
lwn-6419945e3313fd894af79caefca6823d4511133f.zip
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd: "This time we have a good set of changes to the core framework that do some general cleanups, but nothing too major. The majority of the diff goes to two SoCs, Actions Semi and Qualcomm. A brand new driver is introduced for Actions Semi so it takes up some lines to add all the different types, and the Qualcomm diff is there because we add support for two SoCs and it's quite a bit of data. Otherwise the big driver updates are on TI Davinci and Amlogic platforms. And then the long tail of driver updates for various fixes and stuff follows after that. Core: - debugfs cleanups removing error checking and an unused provider API - Removal of a clk init typedef that isn't used - Usage of match_string() to simplify parent string name matching - OF clk helpers moved to their own file (linux/of_clk.h) - Make clk warnings more readable across kernel versions New Drivers: - Qualcomm SDM845 GCC and Video clk controllers - Qualcomm MSM8998 GCC - Actions Semi S900 SoC support - Nuvoton npcm750 microcontroller clks - Amlogic axg AO clock controller Removed Drivers: - Deprecated Rockchip clk-gate driver Updates: - debugfs functions stopped checking return values - Support for the MSIOF module clocks on Rensas R-Car M3-N - Support for the new Rensas RZ/G1C and R-Car E3 SoCs - Qualcomm GDSC, RCG, and PLL updates for clk changes in new SoCs - Berlin and Amlogic SPDX tagging - Usage of of_clk_get_parent_count() in more places - Proper implementation of the CDEV1/2 clocks on Tegra20 - Allwinner H6 PRCM clock support and R40 EMAC support - Add critical flag to meson8b's fdiv2 as temporary fixup for ethernet - Round closest support for meson's mpll driver - Support for meson8b nand clocks and gxbb video decoder clocks - Mediatek mali clks - STM32MP1 fixes - Uniphier LD11/LD20 stream demux system clock" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (134 commits) clk: qcom: Export clk_fabia_pll_configure() clk: bcm: Update and add Stingray clock entries dt-bindings: clk: Update Stingray binding doc clk-si544: Properly round requested frequency to nearest match clk: ingenic: jz4770: Add 150us delay after enabling VPU clock clk: ingenic: jz4770: Enable power of AHB1 bus after ungating VPU clock clk: ingenic: jz4770: Modify C1CLK clock to disable CPU clock stop on idle clk: ingenic: jz4770: Change OTG from custom to standard gated clock clk: ingenic: Support specifying "wait for clock stable" delay clk: ingenic: Add support for clocks whose gate bit is inverted clk: use match_string() helper clk: bcm2835: use match_string() helper clk: Return void from debug_init op clk: remove clk_debugfs_add_file() clk: tegra: no need to check return value of debugfs_create functions clk: davinci: no need to check return value of debugfs_create functions clk: bcm2835: no need to check return value of debugfs_create functions clk: no need to check return value of debugfs_create functions clk: imx6: add EPIT clock support clk: mvebu: use correct bit for 98DX3236 NAND ...
Diffstat (limited to 'drivers/clk/actions/owl-composite.c')
-rw-r--r--drivers/clk/actions/owl-composite.c199
1 files changed, 199 insertions, 0 deletions
diff --git a/drivers/clk/actions/owl-composite.c b/drivers/clk/actions/owl-composite.c
new file mode 100644
index 000000000000..101706e0c66f
--- /dev/null
+++ b/drivers/clk/actions/owl-composite.c
@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// OWL composite clock driver
+//
+// Copyright (c) 2014 Actions Semi Inc.
+// Author: David Liu <liuwei@actions-semi.com>
+//
+// Copyright (c) 2018 Linaro Ltd.
+// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+#include "owl-composite.h"
+
+static u8 owl_comp_get_parent(struct clk_hw *hw)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_mux_helper_get_parent(&comp->common, &comp->mux_hw);
+}
+
+static int owl_comp_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_mux_helper_set_parent(&comp->common, &comp->mux_hw, index);
+}
+
+static void owl_comp_disable(struct clk_hw *hw)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+ struct owl_clk_common *common = &comp->common;
+
+ owl_gate_set(common, &comp->gate_hw, false);
+}
+
+static int owl_comp_enable(struct clk_hw *hw)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+ struct owl_clk_common *common = &comp->common;
+
+ owl_gate_set(common, &comp->gate_hw, true);
+
+ return 0;
+}
+
+static int owl_comp_is_enabled(struct clk_hw *hw)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+ struct owl_clk_common *common = &comp->common;
+
+ return owl_gate_clk_is_enabled(common, &comp->gate_hw);
+}
+
+static long owl_comp_div_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_divider_helper_round_rate(&comp->common, &comp->rate.div_hw,
+ rate, parent_rate);
+}
+
+static unsigned long owl_comp_div_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_divider_helper_recalc_rate(&comp->common, &comp->rate.div_hw,
+ parent_rate);
+}
+
+static int owl_comp_div_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_divider_helper_set_rate(&comp->common, &comp->rate.div_hw,
+ rate, parent_rate);
+}
+
+static long owl_comp_fact_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_factor_helper_round_rate(&comp->common,
+ &comp->rate.factor_hw,
+ rate, parent_rate);
+}
+
+static unsigned long owl_comp_fact_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_factor_helper_recalc_rate(&comp->common,
+ &comp->rate.factor_hw,
+ parent_rate);
+}
+
+static int owl_comp_fact_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+
+ return owl_factor_helper_set_rate(&comp->common,
+ &comp->rate.factor_hw,
+ rate, parent_rate);
+}
+
+static long owl_comp_fix_fact_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+ struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
+
+ return comp->fix_fact_ops->round_rate(&fix_fact_hw->hw, rate, parent_rate);
+}
+
+static unsigned long owl_comp_fix_fact_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct owl_composite *comp = hw_to_owl_comp(hw);
+ struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
+
+ return comp->fix_fact_ops->recalc_rate(&fix_fact_hw->hw, parent_rate);
+
+}
+
+static int owl_comp_fix_fact_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ /*
+ * We must report success but we can do so unconditionally because
+ * owl_comp_fix_fact_round_rate returns values that ensure this call is
+ * a nop.
+ */
+
+ return 0;
+}
+
+const struct clk_ops owl_comp_div_ops = {
+ /* mux_ops */
+ .get_parent = owl_comp_get_parent,
+ .set_parent = owl_comp_set_parent,
+
+ /* gate_ops */
+ .disable = owl_comp_disable,
+ .enable = owl_comp_enable,
+ .is_enabled = owl_comp_is_enabled,
+
+ /* div_ops */
+ .round_rate = owl_comp_div_round_rate,
+ .recalc_rate = owl_comp_div_recalc_rate,
+ .set_rate = owl_comp_div_set_rate,
+};
+
+
+const struct clk_ops owl_comp_fact_ops = {
+ /* mux_ops */
+ .get_parent = owl_comp_get_parent,
+ .set_parent = owl_comp_set_parent,
+
+ /* gate_ops */
+ .disable = owl_comp_disable,
+ .enable = owl_comp_enable,
+ .is_enabled = owl_comp_is_enabled,
+
+ /* fact_ops */
+ .round_rate = owl_comp_fact_round_rate,
+ .recalc_rate = owl_comp_fact_recalc_rate,
+ .set_rate = owl_comp_fact_set_rate,
+};
+
+const struct clk_ops owl_comp_fix_fact_ops = {
+ /* gate_ops */
+ .disable = owl_comp_disable,
+ .enable = owl_comp_enable,
+ .is_enabled = owl_comp_is_enabled,
+
+ /* fix_fact_ops */
+ .round_rate = owl_comp_fix_fact_round_rate,
+ .recalc_rate = owl_comp_fix_fact_recalc_rate,
+ .set_rate = owl_comp_fix_fact_set_rate,
+};
+
+
+const struct clk_ops owl_comp_pass_ops = {
+ /* mux_ops */
+ .get_parent = owl_comp_get_parent,
+ .set_parent = owl_comp_set_parent,
+
+ /* gate_ops */
+ .disable = owl_comp_disable,
+ .enable = owl_comp_enable,
+ .is_enabled = owl_comp_is_enabled,
+};