Add support for the graphics clock controller found on SC7180
based devices. This would allow graphics drivers to probe and
control their clocks.
Signed-off-by: Taniya Das <tdas@xxxxxxxxxxxxxx>
---
drivers/clk/qcom/Kconfig | 8 ++
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/gpucc-sc7180.c | 274 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 283 insertions(+)
create mode 100644 drivers/clk/qcom/gpucc-sc7180.c
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 91706d8..c898e62 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -236,6 +236,14 @@ config SC_GCC_7180
Say Y if you want to use peripheral devices such as UART, SPI,
I2C, USB, UFS, SDCC, etc.
+config SC_GPUCC_7180
+ tristate "SC7180 Graphics Clock Controller"
+ select SC_GCC_7180
+ help
+ Support for the graphics clock controller on SC7180 devices.
+ Say Y if you want to support graphics controller devices and
+ functionality such as 3D graphics.
+
config SDM_CAMCC_845
tristate "SDM845 Camera Clock Controller"
select SDM_GCC_845
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 6fb356a..b89a292 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
obj-$(CONFIG_QCS_GCC_404) += gcc-qcs404.o
obj-$(CONFIG_QCS_TURING_404) += turingcc-qcs404.o
obj-$(CONFIG_SC_GCC_7180) += gcc-sc7180.o
+obj-$(CONFIG_SC_GPUCC_7180) += gpucc-sc7180.o
obj-$(CONFIG_SDM_CAMCC_845) += camcc-sdm845.o
obj-$(CONFIG_SDM_DISPCC_845) += dispcc-sdm845.o
obj-$(CONFIG_SDM_GCC_660) += gcc-sdm660.o
diff --git a/drivers/clk/qcom/gpucc-sc7180.c b/drivers/clk/qcom/gpucc-sc7180.c
new file mode 100644
index 0000000..0d893e6
--- /dev/null
+++ b/drivers/clk/qcom/gpucc-sc7180.c
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2019, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,gpucc-sc7180.h>
+
+#include "clk-alpha-pll.h"
+#include "clk-branch.h"
+#include "clk-rcg.h"
+#include "clk-regmap.h"
+#include "common.h"
+#include "gdsc.h"
+
+#define CX_GMU_CBCR_SLEEP_MASK 0xF
+#define CX_GMU_CBCR_SLEEP_SHIFT 4
+#define CX_GMU_CBCR_WAKE_MASK 0xF
+#define CX_GMU_CBCR_WAKE_SHIFT 8
+#define CLK_DIS_WAIT_SHIFT 12
+#define CLK_DIS_WAIT_MASK (0xf << CLK_DIS_WAIT_SHIFT)
+
+enum {
+ P_BI_TCXO,
+ P_CORE_BI_PLL_TEST_SE,
+ P_GPLL0_OUT_MAIN,
+ P_GPLL0_OUT_MAIN_DIV,
+ P_GPU_CC_PLL1_OUT_EVEN,
+ P_GPU_CC_PLL1_OUT_MAIN,
+ P_GPU_CC_PLL1_OUT_ODD,
+};
+
+static struct pll_vco fabia_vco[] = {
+ { 249600000, 2000000000, 0 },
+};
+
+static struct clk_alpha_pll gpu_cc_pll1 = {
+ .offset = 0x100,
+ .vco_table = fabia_vco,
+ .num_vco = ARRAY_SIZE(fabia_vco),
+ .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+ .clkr = {
+ .hw.init = &(struct clk_init_data){
+ .name = "gpu_cc_pll1",
+ .parent_data = &(const struct clk_parent_data){
+ .fw_name = "bi_tcxo",
+ .name = "bi_tcxo",
+ },
+ .num_parents = 1,
+ .ops = &clk_alpha_pll_fabia_ops,
+ },
+ },
+};
+
+static const struct parent_map gpu_cc_parent_map_0[] = {
+ { P_BI_TCXO, 0 },
+ { P_GPU_CC_PLL1_OUT_MAIN, 3 },
+ { P_GPLL0_OUT_MAIN, 5 },
+ { P_GPLL0_OUT_MAIN_DIV, 6 },
+ { P_CORE_BI_PLL_TEST_SE, 7 },
+};
+
+static const struct clk_parent_data gpu_cc_parent_data_0[] = {
+ { .fw_name = "bi_tcxo", .name = "bi_tcxo" },
+ { .hw = &gpu_cc_pll1.clkr.hw },
+ { .fw_name = "gcc_gpu_gpll0_clk_src", .name = "gcc_gpu_gpll0_clk_src" },
+ { .fw_name = "gcc_gpu_gpll0_div_clk_src",
+ .name = "gcc_gpu_gpll0_div_clk_src" },
+ { .fw_name = "core_bi_pll_test_se", .name = "core_bi_pll_test_se" },
+};
+
+static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
+ F(19200000, P_BI_TCXO, 1, 0, 0),
+ F(200000000, P_GPLL0_OUT_MAIN_DIV, 1.5, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 gpu_cc_gmu_clk_src = {
+ .cmd_rcgr = 0x1120,
+ .mnd_width = 0,
+ .hid_width = 5,
+ .parent_map = gpu_cc_parent_map_0,
+ .freq_tbl = ftbl_gpu_cc_gmu_clk_src,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "gpu_cc_gmu_clk_src",
+ .parent_data = gpu_cc_parent_data_0,
+ .num_parents = 5,
+ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_rcg2_shared_ops,
+ },
+};
+
+static struct clk_branch gpu_cc_crc_ahb_clk = {
+ .halt_reg = 0x107c,
+ .halt_check = BRANCH_HALT_DELAY,
+ .clkr = {
+ .enable_reg = 0x107c,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpu_cc_crc_ahb_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch gpu_cc_cx_gmu_clk = {
+ .halt_reg = 0x1098,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x1098,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpu_cc_cx_gmu_clk",
+ .parent_data = &(const struct clk_parent_data){
+ .hw = &gpu_cc_gmu_clk_src.clkr.hw,
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
+ .halt_reg = 0x108c,
+ .halt_check = BRANCH_HALT_DELAY,
+ .clkr = {
+ .enable_reg = 0x108c,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpu_cc_cx_snoc_dvm_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch gpu_cc_cxo_aon_clk = {
+ .halt_reg = 0x1004,
+ .halt_check = BRANCH_HALT_DELAY,
+ .clkr = {
+ .enable_reg = 0x1004,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpu_cc_cxo_aon_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch gpu_cc_cxo_clk = {
+ .halt_reg = 0x109c,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x109c,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpu_cc_cxo_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct gdsc cx_gdsc = {
+ .gdscr = 0x106c,
+ .gds_hw_ctrl = 0x1540,
+ .pd = {
+ .name = "cx_gdsc",
+ },
+ .pwrsts = PWRSTS_OFF_ON,
+ .flags = VOTABLE,
+};
+
+static struct gdsc *gpu_cc_sc7180_gdscs[] = {
+ [CX_GDSC] = &cx_gdsc,
+};
+
+static struct clk_regmap *gpu_cc_sc7180_clocks[] = {
+ [GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
+ [GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
+ [GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
+ [GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
+ [GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
+ [GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
+ [GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
+};
+
+static const struct regmap_config gpu_cc_sc7180_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0x8008,
+ .fast_io = true,
+};
+
+static const struct qcom_cc_desc gpu_cc_sc7180_desc = {
+ .config = &gpu_cc_sc7180_regmap_config,
+ .clks = gpu_cc_sc7180_clocks,
+ .num_clks = ARRAY_SIZE(gpu_cc_sc7180_clocks),
+ .gdscs = gpu_cc_sc7180_gdscs,
+ .num_gdscs = ARRAY_SIZE(gpu_cc_sc7180_gdscs),
+};
+
+static const struct of_device_id gpu_cc_sc7180_match_table[] = {
+ { .compatible = "qcom,sc7180-gpucc" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, gpu_cc_sc7180_match_table);
+
+static int gpu_cc_sc7180_probe(struct platform_device *pdev)
+{
+ struct regmap *regmap;
+ struct alpha_pll_config gpu_cc_pll_config = {};
+ unsigned int value, mask;
+
+ regmap = qcom_cc_map(pdev, &gpu_cc_sc7180_desc);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ /* 360MHz Configuration */
+ gpu_cc_pll_config.l = 0x12;
+ gpu_cc_pll_config.alpha = 0xC000;
+ gpu_cc_pll_config.config_ctl_val = 0x20485699;
+ gpu_cc_pll_config.config_ctl_hi_val = 0x00002067;
+ gpu_cc_pll_config.user_ctl_val = 0x00000001;
+ gpu_cc_pll_config.user_ctl_hi_val = 0x00004805;
+ gpu_cc_pll_config.test_ctl_hi_val = 0x40000000;
+
+ clk_fabia_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll_config);
+
+ /* Recommended WAKEUP/SLEEP settings for the gpu_cc_cx_gmu_clk */
+ mask = CX_GMU_CBCR_WAKE_MASK << CX_GMU_CBCR_WAKE_SHIFT;
+ mask |= CX_GMU_CBCR_SLEEP_MASK << CX_GMU_CBCR_SLEEP_SHIFT;
+ value = 0xF << CX_GMU_CBCR_WAKE_SHIFT | 0xF << CX_GMU_CBCR_SLEEP_SHIFT;
+ regmap_update_bits(regmap, 0x1098, mask, value);
+
+ /* gpu_cc_ahb_clk */
+ regmap_update_bits(regmap, 0x1078, 0x1, 0x1);
+
+ /* Configure clk_dis_wait for gpu_cx_gdsc */
+ regmap_update_bits(regmap, 0x106c, CLK_DIS_WAIT_MASK,
+ 8 << CLK_DIS_WAIT_SHIFT);
+
+ return qcom_cc_really_probe(pdev, &gpu_cc_sc7180_desc, regmap);
+}
+
+static struct platform_driver gpu_cc_sc7180_driver = {
+ .probe = gpu_cc_sc7180_probe,
+ .driver = {
+ .name = "sc7180-gpucc",
+ .of_match_table = gpu_cc_sc7180_match_table,
+ },
+};
+
+static int __init gpu_cc_sc7180_init(void)
+{
+ return platform_driver_register(&gpu_cc_sc7180_driver);
+}
+core_initcall(gpu_cc_sc7180_init);
+
+static void __exit gpu_cc_sc7180_exit(void)
+{
+ platform_driver_unregister(&gpu_cc_sc7180_driver);
+}
+module_exit(gpu_cc_sc7180_exit);
+
+MODULE_DESCRIPTION("QTI GPU_CC SC7180 Driver");
+MODULE_LICENSE("GPL v2");
--
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