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-rw-r--r--Documentation/devicetree/bindings/clock/qcom,gcc.txt1
-rw-r--r--Documentation/devicetree/bindings/clock/qcom,videocc.txt19
-rw-r--r--drivers/clk/qcom/Kconfig19
-rw-r--r--drivers/clk/qcom/Makefile2
-rw-r--r--drivers/clk/qcom/clk-alpha-pll.c302
-rw-r--r--drivers/clk/qcom/clk-alpha-pll.h18
-rw-r--r--drivers/clk/qcom/clk-branch.c7
-rw-r--r--drivers/clk/qcom/clk-branch.h1
-rw-r--r--drivers/clk/qcom/clk-rcg.h17
-rw-r--r--drivers/clk/qcom/clk-rcg2.c167
-rw-r--r--drivers/clk/qcom/gcc-sdm845.c3465
-rw-r--r--drivers/clk/qcom/gdsc.c94
-rw-r--r--drivers/clk/qcom/gdsc.h7
-rw-r--r--drivers/clk/qcom/videocc-sdm845.c358
-rw-r--r--include/dt-bindings/clock/qcom,gcc-sdm845.h239
-rw-r--r--include/dt-bindings/clock/qcom,videocc-sdm845.h35
16 files changed, 4689 insertions, 62 deletions
diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc.txt b/Documentation/devicetree/bindings/clock/qcom,gcc.txt
index d1fb8b213dde..664ea1fd6c76 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gcc.txt
+++ b/Documentation/devicetree/bindings/clock/qcom,gcc.txt
@@ -19,6 +19,7 @@ Required properties :
"qcom,gcc-msm8996"
"qcom,gcc-msm8998"
"qcom,gcc-mdm9615"
+ "qcom,gcc-sdm845"
- reg : shall contain base register location and length
- #clock-cells : shall contain 1
diff --git a/Documentation/devicetree/bindings/clock/qcom,videocc.txt b/Documentation/devicetree/bindings/clock/qcom,videocc.txt
new file mode 100644
index 000000000000..e7c035afa778
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qcom,videocc.txt
@@ -0,0 +1,19 @@
+Qualcomm Video Clock & Reset Controller Binding
+-----------------------------------------------
+
+Required properties :
+- compatible : shall contain "qcom,sdm845-videocc"
+- reg : shall contain base register location and length
+- #clock-cells : from common clock binding, shall contain 1.
+- #power-domain-cells : from generic power domain binding, shall contain 1.
+
+Optional properties :
+- #reset-cells : from common reset binding, shall contain 1.
+
+Example:
+ videocc: clock-controller@ab00000 {
+ compatible = "qcom,sdm845-videocc";
+ reg = <0xab00000 0x10000>;
+ #clock-cells = <1>;
+ #power-domain-cells = <1>;
+ };
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index e42e1afb0c51..9c3480dcc38a 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -226,6 +226,25 @@ config MSM_GCC_8998
Say Y if you want to use peripheral devices such as UART, SPI,
i2c, USB, UFS, SD/eMMC, PCIe, etc.
+config SDM_GCC_845
+ tristate "SDM845 Global Clock Controller"
+ select QCOM_GDSC
+ depends on COMMON_CLK_QCOM
+ help
+ Support for the global clock controller on SDM845 devices.
+ Say Y if you want to use peripheral devices such as UART, SPI,
+ i2C, USB, UFS, SDDC, PCIe, etc.
+
+config SDM_VIDEOCC_845
+ tristate "SDM845 Video Clock Controller"
+ depends on COMMON_CLK_QCOM
+ select SDM_GCC_845
+ select QCOM_GDSC
+ help
+ Support for the video clock controller on SDM845 devices.
+ Say Y if you want to support video devices and functionality such as
+ video encode and decode.
+
config SPMI_PMIC_CLKDIV
tristate "SPMI PMIC clkdiv Support"
depends on (COMMON_CLK_QCOM && SPMI) || COMPILE_TEST
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 7c09ab1a640c..762c01137c2f 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -38,4 +38,6 @@ obj-$(CONFIG_QCOM_A53PLL) += a53-pll.o
obj-$(CONFIG_QCOM_CLK_APCS_MSM8916) += apcs-msm8916.o
obj-$(CONFIG_QCOM_CLK_RPM) += clk-rpm.o
obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
+obj-$(CONFIG_SDM_GCC_845) += gcc-sdm845.o
+obj-$(CONFIG_SDM_VIDEOCC_845) += videocc-sdm845.o
obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o
diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 6d04cd96482a..3c49a60072f1 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015, 2018, The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -58,6 +58,8 @@
#define PLL_TEST_CTL(p) ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL])
#define PLL_TEST_CTL_U(p) ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U])
#define PLL_STATUS(p) ((p)->offset + (p)->regs[PLL_OFF_STATUS])
+#define PLL_OPMODE(p) ((p)->offset + (p)->regs[PLL_OFF_OPMODE])
+#define PLL_FRAC(p) ((p)->offset + (p)->regs[PLL_OFF_FRAC])
const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = {
[CLK_ALPHA_PLL_TYPE_DEFAULT] = {
@@ -90,6 +92,18 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = {
[PLL_OFF_TEST_CTL] = 0x1c,
[PLL_OFF_STATUS] = 0x24,
},
+ [CLK_ALPHA_PLL_TYPE_FABIA] = {
+ [PLL_OFF_L_VAL] = 0x04,
+ [PLL_OFF_USER_CTL] = 0x0c,
+ [PLL_OFF_USER_CTL_U] = 0x10,
+ [PLL_OFF_CONFIG_CTL] = 0x14,
+ [PLL_OFF_CONFIG_CTL_U] = 0x18,
+ [PLL_OFF_TEST_CTL] = 0x1c,
+ [PLL_OFF_TEST_CTL_U] = 0x20,
+ [PLL_OFF_STATUS] = 0x24,
+ [PLL_OFF_OPMODE] = 0x2c,
+ [PLL_OFF_FRAC] = 0x38,
+ },
};
EXPORT_SYMBOL_GPL(clk_alpha_pll_regs);
@@ -108,6 +122,12 @@ EXPORT_SYMBOL_GPL(clk_alpha_pll_regs);
#define PLL_HUAYRA_N_MASK 0xff
#define PLL_HUAYRA_ALPHA_WIDTH 16
+#define FABIA_OPMODE_STANDBY 0x0
+#define FABIA_OPMODE_RUN 0x1
+
+#define FABIA_PLL_OUT_MASK 0x7
+#define FABIA_PLL_RATE_MARGIN 500
+
#define pll_alpha_width(p) \
((PLL_ALPHA_VAL_U(p) - PLL_ALPHA_VAL(p) == 4) ? \
ALPHA_REG_BITWIDTH : ALPHA_REG_16BIT_WIDTH)
@@ -441,16 +461,12 @@ clk_alpha_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
return alpha_pll_calc_rate(prate, l, a, alpha_width);
}
-static int clk_alpha_pll_update_latch(struct clk_alpha_pll *pll,
- int (*is_enabled)(struct clk_hw *))
+
+static int __clk_alpha_pll_update_latch(struct clk_alpha_pll *pll)
{
int ret;
u32 mode;
- if (!is_enabled(&pll->clkr.hw) ||
- !(pll->flags & SUPPORTS_DYNAMIC_UPDATE))
- return 0;
-
regmap_read(pll->clkr.regmap, PLL_MODE(pll), &mode);
/* Latch the input to the PLL */
@@ -489,6 +505,16 @@ static int clk_alpha_pll_update_latch(struct clk_alpha_pll *pll,
return 0;
}
+static int clk_alpha_pll_update_latch(struct clk_alpha_pll *pll,
+ int (*is_enabled)(struct clk_hw *))
+{
+ if (!is_enabled(&pll->clkr.hw) ||
+ !(pll->flags & SUPPORTS_DYNAMIC_UPDATE))
+ return 0;
+
+ return __clk_alpha_pll_update_latch(pll);
+}
+
static int __clk_alpha_pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long prate,
int (*is_enabled)(struct clk_hw *))
@@ -832,3 +858,265 @@ const struct clk_ops clk_alpha_pll_postdiv_ro_ops = {
.recalc_rate = clk_alpha_pll_postdiv_recalc_rate,
};
EXPORT_SYMBOL_GPL(clk_alpha_pll_postdiv_ro_ops);
+
+void clk_fabia_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+ const struct alpha_pll_config *config)
+{
+ u32 val, mask;
+
+ if (config->l)
+ regmap_write(regmap, PLL_L_VAL(pll), config->l);
+
+ if (config->alpha)
+ regmap_write(regmap, PLL_FRAC(pll), config->alpha);
+
+ if (config->config_ctl_val)
+ regmap_write(regmap, PLL_CONFIG_CTL(pll),
+ config->config_ctl_val);
+
+ if (config->post_div_mask) {
+ mask = config->post_div_mask;
+ val = config->post_div_val;
+ regmap_update_bits(regmap, PLL_USER_CTL(pll), mask, val);
+ }
+
+ regmap_update_bits(regmap, PLL_MODE(pll), PLL_UPDATE_BYPASS,
+ PLL_UPDATE_BYPASS);
+
+ regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N);
+}
+EXPORT_SYMBOL_GPL(clk_fabia_pll_configure);
+
+static int alpha_pll_fabia_enable(struct clk_hw *hw)
+{
+ int ret;
+ struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+ u32 val, opmode_val;
+ struct regmap *regmap = pll->clkr.regmap;
+
+ ret = regmap_read(regmap, PLL_MODE(pll), &val);
+ if (ret)
+ return ret;
+
+ /* If in FSM mode, just vote for it */
+ if (val & PLL_VOTE_FSM_ENA) {
+ ret = clk_enable_regmap(hw);
+ if (ret)
+ return ret;
+ return wait_for_pll_enable_active(pll);
+ }
+
+ ret = regmap_read(regmap, PLL_OPMODE(pll), &opmode_val);
+ if (ret)
+ return ret;
+
+ /* Skip If PLL is already running */
+ if ((opmode_val & FABIA_OPMODE_RUN) && (val & PLL_OUTCTRL))
+ return 0;
+
+ ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(regmap, PLL_OPMODE(pll), FABIA_OPMODE_STANDBY);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N,
+ PLL_RESET_N);
+ if (ret)
+ return ret;
+
+ ret = regmap_write(regmap, PLL_OPMODE(pll), FABIA_OPMODE_RUN);
+ if (ret)
+ return ret;
+
+ ret = wait_for_pll_enable_lock(pll);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(regmap, PLL_USER_CTL(pll),
+ FABIA_PLL_OUT_MASK, FABIA_PLL_OUT_MASK);
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL,
+ PLL_OUTCTRL);
+}
+
+static void alpha_pll_fabia_disable(struct clk_hw *hw)
+{
+ int ret;
+ struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+ u32 val;
+ struct regmap *regmap = pll->clkr.regmap;
+
+ ret = regmap_read(regmap, PLL_MODE(pll), &val);
+ if (ret)
+ return;
+
+ /* If in FSM mode, just unvote it */
+ if (val & PLL_FSM_ENA) {
+ clk_disable_regmap(hw);
+ return;
+ }
+
+ ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0);
+ if (ret)
+ return;
+
+ /* Disable main outputs */
+ ret = regmap_update_bits(regmap, PLL_USER_CTL(pll), FABIA_PLL_OUT_MASK,
+ 0);
+ if (ret)
+ return;
+
+ /* Place the PLL in STANDBY */
+ regmap_write(regmap, PLL_OPMODE(pll), FABIA_OPMODE_STANDBY);
+}
+
+static unsigned long alpha_pll_fabia_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+ u32 l, frac, alpha_width = pll_alpha_width(pll);
+
+ regmap_read(pll->clkr.regmap, PLL_L_VAL(pll), &l);
+ regmap_read(pll->clkr.regmap, PLL_FRAC(pll), &frac);
+
+ return alpha_pll_calc_rate(parent_rate, l, frac, alpha_width);
+}
+
+static int alpha_pll_fabia_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long prate)
+{
+ struct clk_alpha_pll *pll = to_clk_alpha_pll(hw);
+ u32 val, l, alpha_width = pll_alpha_width(pll);
+ u64 a;
+ unsigned long rrate;
+ int ret = 0;
+
+ ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+ if (ret)
+ return ret;
+
+ rrate = alpha_pll_round_rate(rate, prate, &l, &a, alpha_width);
+
+ /*
+ * Due to limited number of bits for fractional rate programming, the
+ * rounded up rate could be marginally higher than the requested rate.
+ */
+ if (rrate > (rate + FABIA_PLL_RATE_MARGIN) || rrate < rate) {
+ pr_err("Call set rate on the PLL with rounded rates!\n");
+ return -EINVAL;
+ }
+
+ regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l);
+ regmap_write(pll->clkr.regmap, PLL_FRAC(pll), a);
+
+ return __clk_alpha_pll_update_latch(pll);
+}
+
+const struct clk_ops clk_alpha_pll_fabia_ops = {
+ .enable = alpha_pll_fabia_enable,
+ .disable = alpha_pll_fabia_disable,
+ .is_enabled = clk_alpha_pll_is_enabled,
+ .set_rate = alpha_pll_fabia_set_rate,
+ .recalc_rate = alpha_pll_fabia_recalc_rate,
+ .round_rate = clk_alpha_pll_round_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_fabia_ops);
+
+const struct clk_ops clk_alpha_pll_fixed_fabia_ops = {
+ .enable = alpha_pll_fabia_enable,
+ .disable = alpha_pll_fabia_disable,
+ .is_enabled = clk_alpha_pll_is_enabled,
+ .recalc_rate = alpha_pll_fabia_recalc_rate,
+ .round_rate = clk_alpha_pll_round_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_fixed_fabia_ops);
+
+static unsigned long clk_alpha_pll_postdiv_fabia_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+ u32 i, div = 1, val;
+ int ret;
+
+ if (!pll->post_div_table) {
+ pr_err("Missing the post_div_table for the PLL\n");
+ return -EINVAL;
+ }
+
+ ret = regmap_read(pll->clkr.regmap, PLL_USER_CTL(pll), &val);
+ if (ret)
+ return ret;
+
+ val >>= pll->post_div_shift;
+ val &= BIT(pll->width) - 1;
+
+ for (i = 0; i < pll->num_post_div; i++) {
+ if (pll->post_div_table[i].val == val) {
+ div = pll->post_div_table[i].div;
+ break;
+ }
+ }
+
+ return (parent_rate / div);
+}
+
+static long clk_alpha_pll_postdiv_fabia_round_rate(struct clk_hw *hw,
+ unsigned long rate, unsigned long *prate)
+{
+ struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+
+ if (!pll->post_div_table) {
+ pr_err("Missing the post_div_table for the PLL\n");
+ return -EINVAL;
+ }
+
+ return divider_round_rate(hw, rate, prate, pll->post_div_table,
+ pll->width, CLK_DIVIDER_ROUND_CLOSEST);
+}
+
+static int clk_alpha_pll_postdiv_fabia_set_rate(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate)
+{
+ struct clk_alpha_pll_postdiv *pll = to_clk_alpha_pll_postdiv(hw);
+ int i, val = 0, div, ret;
+
+ /*
+ * If the PLL is in FSM mode, then treat set_rate callback as a
+ * no-operation.
+ */
+ ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val);
+ if (ret)
+ return ret;
+
+ if (val & PLL_VOTE_FSM_ENA)
+ return 0;
+
+ if (!pll->post_div_table) {
+ pr_err("Missing the post_div_table for the PLL\n");
+ return -EINVAL;
+ }
+
+ div = DIV_ROUND_UP_ULL((u64)parent_rate, rate);
+ for (i = 0; i < pll->num_post_div; i++) {
+ if (pll->post_div_table[i].div == div) {
+ val = pll->post_div_table[i].val;
+ break;
+ }
+ }
+
+ return regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll),
+ (BIT(pll->width) - 1) << pll->post_div_shift,
+ val << pll->post_div_shift);
+}
+
+const struct clk_ops clk_alpha_pll_postdiv_fabia_ops = {
+ .recalc_rate = clk_alpha_pll_postdiv_fabia_recalc_rate,
+ .round_rate = clk_alpha_pll_postdiv_fabia_round_rate,
+ .set_rate = clk_alpha_pll_postdiv_fabia_set_rate,
+};
+EXPORT_SYMBOL_GPL(clk_alpha_pll_postdiv_fabia_ops);
diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index 7593e8a56cf2..f981b486c468 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015, 2018, The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -22,6 +22,7 @@ enum {
CLK_ALPHA_PLL_TYPE_DEFAULT,
CLK_ALPHA_PLL_TYPE_HUAYRA,
CLK_ALPHA_PLL_TYPE_BRAMMO,
+ CLK_ALPHA_PLL_TYPE_FABIA,
CLK_ALPHA_PLL_TYPE_MAX,
};
@@ -36,6 +37,8 @@ enum {
PLL_OFF_TEST_CTL,
PLL_OFF_TEST_CTL_U,
PLL_OFF_STATUS,
+ PLL_OFF_OPMODE,
+ PLL_OFF_FRAC,
PLL_OFF_MAX_REGS
};
@@ -73,6 +76,10 @@ struct clk_alpha_pll {
* @offset: base address of registers
* @regs: alpha pll register map (see @clk_alpha_pll_regs)
* @width: width of post-divider
+ * @post_div_shift: shift to differentiate between odd & even post-divider
+ * @post_div_table: table with PLL odd and even post-divider settings
+ * @num_post_div: Number of PLL post-divider settings
+ *
* @clkr: regmap clock handle
*/
struct clk_alpha_pll_postdiv {
@@ -81,6 +88,9 @@ struct clk_alpha_pll_postdiv {
const u8 *regs;
struct clk_regmap clkr;
+ int post_div_shift;
+ const struct clk_div_table *post_div_table;
+ size_t num_post_div;
};
struct alpha_pll_config {
@@ -109,7 +119,13 @@ extern const struct clk_ops clk_alpha_pll_postdiv_ops;
extern const struct clk_ops clk_alpha_pll_huayra_ops;
extern const struct clk_ops clk_alpha_pll_postdiv_ro_ops;
+extern const struct clk_ops clk_alpha_pll_fabia_ops;
+extern const struct clk_ops clk_alpha_pll_fixed_fabia_ops;
+extern const struct clk_ops clk_alpha_pll_postdiv_fabia_ops;
+
void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
const struct alpha_pll_config *config);
+void clk_fabia_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
+ const struct alpha_pll_config *config);
#endif
diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c
index 26f7af315066..c58c5538b1b6 100644
--- a/drivers/clk/qcom/clk-branch.c
+++ b/drivers/clk/qcom/clk-branch.c
@@ -77,8 +77,11 @@ static int clk_branch_wait(const struct clk_branch *br, bool enabling,
bool voted = br->halt_check & BRANCH_VOTED;
const char *name = clk_hw_get_name(&br->clkr.hw);
- /* Skip checking halt bit if the clock is in hardware gated mode */
- if (clk_branch_in_hwcg_mode(br))
+ /*
+ * Skip checking halt bit if we're explicitly ignoring the bit or the
+ * clock is in hardware gated mode
+ */
+ if (br->halt_check == BRANCH_HALT_SKIP || clk_branch_in_hwcg_mode(br))
return 0;
if (br->halt_check == BRANCH_HALT_DELAY || (!enabling && voted)) {
diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h
index 284df3f3c55f..1702efb1c511 100644
--- a/drivers/clk/qcom/clk-branch.h
+++ b/drivers/clk/qcom/clk-branch.h
@@ -42,6 +42,7 @@ struct clk_branch {
#define BRANCH_HALT_ENABLE 1 /* pol: 0 = halt */
#define BRANCH_HALT_ENABLE_VOTED (BRANCH_HALT_ENABLE | BRANCH_VOTED)
#define BRANCH_HALT_DELAY 2 /* No bit to check; just delay */
+#define BRANCH_HALT_SKIP 3 /* Don't check halt bit */
struct clk_regmap clkr;
};
diff --git a/drivers/clk/qcom/clk-rcg.h b/drivers/clk/qcom/clk-rcg.h
index 2a7489a84e69..b209a2fe86b9 100644
--- a/drivers/clk/qcom/clk-rcg.h
+++ b/drivers/clk/qcom/clk-rcg.h
@@ -1,15 +1,5 @@
-/*
- * Copyright (c) 2013, The Linux Foundation. All rights reserved.
- *
- * 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.
- */
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2013, 2018, The Linux Foundation. All rights reserved. */
#ifndef __QCOM_CLK_RCG_H__
#define __QCOM_CLK_RCG_H__
@@ -144,6 +134,7 @@ extern const struct clk_ops clk_dyn_rcg_ops;
* @cmd_rcgr: corresponds to *_CMD_RCGR
* @mnd_width: number of bits in m/n/d values
* @hid_width: number of bits in half integer divider
+ * @safe_src_index: safe src index value
* @parent_map: map from software's parent index to hardware's src_sel field
* @freq_tbl: frequency table
* @clkr: regmap clock handle
@@ -153,6 +144,7 @@ struct clk_rcg2 {
u32 cmd_rcgr;
u8 mnd_width;
u8 hid_width;
+ u8 safe_src_index;
const struct parent_map *parent_map;
const struct freq_tbl *freq_tbl;
struct clk_regmap clkr;
@@ -167,5 +159,6 @@ extern const struct clk_ops clk_byte_ops;
extern const struct clk_ops clk_byte2_ops;
extern const struct clk_ops clk_pixel_ops;
extern const struct clk_ops clk_gfx3d_ops;
+extern const struct clk_ops clk_rcg2_shared_ops;
#endif
diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c
index ec6cee8ff1bc..52208d4165f4 100644
--- a/drivers/clk/qcom/clk-rcg2.c
+++ b/drivers/clk/qcom/clk-rcg2.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/*
- * Copyright (c) 2013, The Linux Foundation. All rights reserved.
- *
- * 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.
+ * Copyright (c) 2013, 2018, The Linux Foundation. All rights reserved.
*/
#include <linux/kernel.h>
@@ -42,6 +34,7 @@
#define CFG_MODE_SHIFT 12
#define CFG_MODE_MASK (0x3 << CFG_MODE_SHIFT)
#define CFG_MODE_DUAL_EDGE (0x2 << CFG_MODE_SHIFT)
+#define CFG_HW_CLK_CTRL_MASK BIT(20)
#define M_REG 0x8
#define N_REG 0xc
@@ -249,7 +242,7 @@ static int clk_rcg2_determine_floor_rate(struct clk_hw *hw,
return _freq_tbl_determine_rate(hw, rcg->freq_tbl, req, FLOOR);
}
-static int clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
+static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
{
u32 cfg, mask;
struct clk_hw *hw = &rcg->clkr.hw;
@@ -277,13 +270,21 @@ static int clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
}
mask = BIT(rcg->hid_width) - 1;
- mask |= CFG_SRC_SEL_MASK | CFG_MODE_MASK;
+ mask |= CFG_SRC_SEL_MASK | CFG_MODE_MASK | CFG_HW_CLK_CTRL_MASK;
cfg = f->pre_div << CFG_SRC_DIV_SHIFT;
cfg |= rcg->parent_map[index].cfg << CFG_SRC_SEL_SHIFT;
if (rcg->mnd_width && f->n && (f->m != f->n))
cfg |= CFG_MODE_DUAL_EDGE;
- ret = regmap_update_bits(rcg->clkr.regmap,
- rcg->cmd_rcgr + CFG_REG, mask, cfg);
+
+ return regmap_update_bits(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
+ mask, cfg);
+}
+
+static int clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
+{
+ int ret;
+
+ ret = __clk_rcg2_configure(rcg, f);
if (ret)
return ret;
@@ -790,3 +791,141 @@ const struct clk_ops clk_gfx3d_ops = {
.determine_rate = clk_gfx3d_determine_rate,
};
EXPORT_SYMBOL_GPL(clk_gfx3d_ops);
+
+static int clk_rcg2_set_force_enable(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ const char *name = clk_hw_get_name(hw);
+ int ret, count;
+
+ ret = regmap_update_bits(rcg->clkr.regmap, rcg->cmd_rcgr + CMD_REG,
+ CMD_ROOT_EN, CMD_ROOT_EN);
+ if (ret)
+ return ret;
+
+ /* wait for RCG to turn ON */
+ for (count = 500; count > 0; count--) {
+ if (clk_rcg2_is_enabled(hw))
+ return 0;
+
+ udelay(1);
+ }
+
+ pr_err("%s: RCG did not turn on\n", name);
+ return -ETIMEDOUT;
+}
+
+static int clk_rcg2_clear_force_enable(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+
+ return regmap_update_bits(rcg->clkr.regmap, rcg->cmd_rcgr + CMD_REG,
+ CMD_ROOT_EN, 0);
+}
+
+static int
+clk_rcg2_shared_force_enable_clear(struct clk_hw *hw, const struct freq_tbl *f)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ int ret;
+
+ ret = clk_rcg2_set_force_enable(hw);
+ if (ret)
+ return ret;
+
+ ret = clk_rcg2_configure(rcg, f);
+ if (ret)
+ return ret;
+
+ return clk_rcg2_clear_force_enable(hw);
+}
+
+static int clk_rcg2_shared_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ const struct freq_tbl *f;
+
+ f = qcom_find_freq(rcg->freq_tbl, rate);
+ if (!f)
+ return -EINVAL;
+
+ /*
+ * In case clock is disabled, update the CFG, M, N and D registers
+ * and don't hit the update bit of CMD register.
+ */
+ if (!__clk_is_enabled(hw->clk))
+ return __clk_rcg2_configure(rcg, f);
+
+ return clk_rcg2_shared_force_enable_clear(hw, f);
+}
+
+static int clk_rcg2_shared_set_rate_and_parent(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate, u8 index)
+{
+ return clk_rcg2_shared_set_rate(hw, rate, parent_rate);
+}
+
+static int clk_rcg2_shared_enable(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ int ret;
+
+ /*
+ * Set the update bit because required configuration has already
+ * been written in clk_rcg2_shared_set_rate()
+ */
+ ret = clk_rcg2_set_force_enable(hw);
+ if (ret)
+ return ret;
+
+ ret = update_config(rcg);
+ if (ret)
+ return ret;
+
+ return clk_rcg2_clear_force_enable(hw);
+}
+
+static void clk_rcg2_shared_disable(struct clk_hw *hw)
+{
+ struct clk_rcg2 *rcg = to_clk_rcg2(hw);
+ u32 cfg;
+
+ /*
+ * Store current configuration as switching to safe source would clear
+ * the SRC and DIV of CFG register
+ */
+ regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, &cfg);
+
+ /*
+ * Park the RCG at a safe configuration - sourced off of safe source.
+ * Force enable and disable the RCG while configuring it to safeguard
+ * against any update signal coming from the downstream clock.
+ * The current parent is still prepared and enabled at this point, and
+ * the safe source is always on while application processor subsystem
+ * is online. Therefore, the RCG can safely switch its parent.
+ */
+ clk_rcg2_set_force_enable(hw);
+
+ regmap_write(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
+ rcg->safe_src_index << CFG_SRC_SEL_SHIFT);
+
+ update_config(rcg);
+
+ clk_rcg2_clear_force_enable(hw);
+
+ /* Write back the stored configuration corresponding to current rate */
+ regmap_write(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, cfg);
+}
+
+const struct clk_ops clk_rcg2_shared_ops = {
+ .enable = clk_rcg2_shared_enable,
+ .disable = clk_rcg2_shared_disable,
+ .get_parent = clk_rcg2_get_parent,
+ .set_parent = clk_rcg2_set_parent,
+ .recalc_rate = clk_rcg2_recalc_rate,
+ .determine_rate = clk_rcg2_determine_rate,
+ .set_rate = clk_rcg2_shared_set_rate,
+ .set_rate_and_parent = clk_rcg2_shared_set_rate_and_parent,
+};
+EXPORT_SYMBOL_GPL(clk_rcg2_shared_ops);
diff --git a/drivers/clk/qcom/gcc-sdm845.c b/drivers/clk/qcom/gcc-sdm845.c
new file mode 100644
index 000000000000..e78e6f5b99fc
--- /dev/null
+++ b/drivers/clk/qcom/gcc-sdm845.c
@@ -0,0 +1,3465 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+
+#include <dt-bindings/clock/qcom,gcc-sdm845.h>
+
+#include "common.h"
+#include "clk-regmap.h"
+#include "clk-pll.h"
+#include "clk-rcg.h"
+#include "clk-branch.h"
+#include "clk-alpha-pll.h"
+#include "gdsc.h"
+#include "reset.h"
+
+#define F(f, s, h, m, n) { (f), (s), (2 * (h) - 1), (m), (n) }
+
+enum {
+ P_BI_TCXO,
+ P_AUD_REF_CLK,
+ P_CORE_BI_PLL_TEST_SE,
+ P_GPLL0_OUT_EVEN,
+ P_GPLL0_OUT_MAIN,
+ P_GPLL4_OUT_MAIN,
+ P_SLEEP_CLK,
+};
+
+static const struct parent_map gcc_parent_map_0[] = {
+ { P_BI_TCXO, 0 },
+ { P_GPLL0_OUT_MAIN, 1 },
+ { P_GPLL0_OUT_EVEN, 6 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_0[] = {
+ "bi_tcxo",
+ "gpll0",
+ "gpll0_out_even",
+ "core_bi_pll_test_se",
+};
+
+static const struct parent_map gcc_parent_map_1[] = {
+ { P_BI_TCXO, 0 },
+ { P_GPLL0_OUT_MAIN, 1 },
+ { P_SLEEP_CLK, 5 },
+ { P_GPLL0_OUT_EVEN, 6 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_1[] = {
+ "bi_tcxo",
+ "gpll0",
+ "core_pi_sleep_clk",
+ "gpll0_out_even",
+ "core_bi_pll_test_se",
+};
+
+static const struct parent_map gcc_parent_map_2[] = {
+ { P_BI_TCXO, 0 },
+ { P_SLEEP_CLK, 5 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_2[] = {
+ "bi_tcxo",
+ "core_pi_sleep_clk",
+ "core_bi_pll_test_se",
+};
+
+static const struct parent_map gcc_parent_map_3[] = {
+ { P_BI_TCXO, 0 },
+ { P_GPLL0_OUT_MAIN, 1 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_3[] = {
+ "bi_tcxo",
+ "gpll0",
+ "core_bi_pll_test_se",
+};
+
+static const struct parent_map gcc_parent_map_4[] = {
+ { P_BI_TCXO, 0 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_4[] = {
+ "bi_tcxo",
+ "core_bi_pll_test_se",
+};
+
+static const struct parent_map gcc_parent_map_5[] = {
+ { P_BI_TCXO, 0 },
+ { P_GPLL0_OUT_MAIN, 1 },
+ { P_GPLL4_OUT_MAIN, 5 },
+ { P_GPLL0_OUT_EVEN, 6 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_5[] = {
+ "bi_tcxo",
+ "gpll0",
+ "gpll4",
+ "gpll0_out_even",
+ "core_bi_pll_test_se",
+};
+
+static const struct parent_map gcc_parent_map_6[] = {
+ { P_BI_TCXO, 0 },
+ { P_GPLL0_OUT_MAIN, 1 },
+ { P_AUD_REF_CLK, 2 },
+ { P_GPLL0_OUT_EVEN, 6 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_6[] = {
+ "bi_tcxo",
+ "gpll0",
+ "aud_ref_clk",
+ "gpll0_out_even",
+ "core_bi_pll_test_se",
+};
+
+static const char * const gcc_parent_names_7[] = {
+ "bi_tcxo",
+ "gpll0",
+ "gpll0_out_even",
+ "core_bi_pll_test_se",
+};
+
+static const char * const gcc_parent_names_8[] = {
+ "bi_tcxo",
+ "gpll0",
+ "core_bi_pll_test_se",
+};
+
+static const struct parent_map gcc_parent_map_10[] = {
+ { P_BI_TCXO, 0 },
+ { P_GPLL0_OUT_MAIN, 1 },
+ { P_GPLL4_OUT_MAIN, 5 },
+ { P_GPLL0_OUT_EVEN, 6 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const char * const gcc_parent_names_10[] = {
+ "bi_tcxo",
+ "gpll0",
+ "gpll4",
+ "gpll0_out_even",
+ "core_bi_pll_test_se",
+};
+
+static struct clk_alpha_pll gpll0 = {
+ .offset = 0x0,
+ .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+ .clkr = {
+ .enable_reg = 0x52000,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpll0",
+ .parent_names = (const char *[]){ "bi_tcxo" },
+ .num_parents = 1,
+ .ops = &clk_alpha_pll_fixed_fabia_ops,
+ },
+ },
+};
+
+static struct clk_alpha_pll gpll4 = {
+ .offset = 0x76000,
+ .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+ .clkr = {
+ .enable_reg = 0x52000,
+ .enable_mask = BIT(4),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpll4",
+ .parent_names = (const char *[]){ "bi_tcxo" },
+ .num_parents = 1,
+ .ops = &clk_alpha_pll_fixed_fabia_ops,
+ },
+ },
+};
+
+static const struct clk_div_table post_div_table_fabia_even[] = {
+ { 0x0, 1 },
+ { 0x1, 2 },
+ { 0x3, 4 },
+ { 0x7, 8 },
+ { }
+};
+
+static struct clk_alpha_pll_postdiv gpll0_out_even = {
+ .offset = 0x0,
+ .post_div_shift = 8,
+ .post_div_table = post_div_table_fabia_even,
+ .num_post_div = ARRAY_SIZE(post_div_table_fabia_even),
+ .width = 4,
+ .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "gpll0_out_even",
+ .parent_names = (const char *[]){ "gpll0" },
+ .num_parents = 1,
+ .ops = &clk_alpha_pll_postdiv_fabia_ops,
+ },
+};
+
+static const struct freq_tbl ftbl_gcc_cpuss_ahb_clk_src[] = {
+ F(19200000, P_BI_TCXO, 1, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 gcc_cpuss_ahb_clk_src = {
+ .cmd_rcgr = 0x48014,
+ .mnd_width = 0,
+ .hid_width = 5,
+ .parent_map = gcc_parent_map_0,
+ .freq_tbl = ftbl_gcc_cpuss_ahb_clk_src,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "gcc_cpuss_ahb_clk_src",
+ .parent_names = gcc_parent_names_7,
+ .num_parents = 4,
+ .ops = &clk_rcg2_ops,
+ },
+};
+
+static const struct freq_tbl ftbl_gcc_cpuss_rbcpr_clk_src[] = {
+ F(19200000, P_BI_TCXO, 1, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 gcc_cpuss_rbcpr_clk_src = {
+ .cmd_rcgr = 0x4815c,