From ea4cbcb8478e765d4d20258478106f103feb117b Mon Sep 17 00:00:00 2001 From: Veera Vegivada Date: Sat, 11 Apr 2020 12:41:52 +0530 Subject: [PATCH] clk: qcom: Add GPU clock driver for SM8150 Add driver support for GPUCC clocks frequency plan. Change-Id: Ib8e8e1d332001f8c9fd200e7494d5a0201be4937 Signed-off-by: Veera Vegivada --- drivers/clk/qcom/Kconfig | 9 + drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/gpucc-sm8150.c | 334 ++++++++++++++++++++++++++++++++ 3 files changed, 344 insertions(+) create mode 100644 drivers/clk/qcom/gpucc-sm8150.c diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index 736c10f04c9e..df30a9917903 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -299,6 +299,15 @@ config SM_GCC_8150 Say Y if you want to use peripheral devices such as UART, SPI, I2C, USB, SD/UFS, PCIe etc. +config SM_GPUCC_8150 + tristate "SM8150 Graphics Clock Controller" + select SM_GCC_8150 + help + Support for the graphics clock controller on Qualcomm Technologies, Inc. + sm8150 devices. + Say Y if you want to support graphics controller devices and + functionality such as 3D graphics. + config SPMI_PMIC_CLKDIV tristate "SPMI PMIC clkdiv Support" depends on SPMI || COMPILE_TEST diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile index a5c1f8807abb..0f40ddd73727 100644 --- a/drivers/clk/qcom/Makefile +++ b/drivers/clk/qcom/Makefile @@ -73,6 +73,7 @@ obj-$(CONFIG_SM_DISPCC_SHIMA) += dispcc-shima.o obj-$(CONFIG_SM_GCC_8150) += gcc-sm8150.o obj-$(CONFIG_SM_GCC_HOLI) += gcc-holi.o obj-$(CONFIG_SM_GCC_SHIMA) += gcc-shima.o +obj-$(CONFIG_SM_GPUCC_8150) += gpucc-sm8150.o obj-$(CONFIG_SM_GPUCC_HOLI) += gpucc-holi.o obj-$(CONFIG_SM_GPUCC_SHIMA) += gpucc-shima.o obj-$(CONFIG_SM_VIDEOCC_SHIMA) += videocc-shima.o diff --git a/drivers/clk/qcom/gpucc-sm8150.c b/drivers/clk/qcom/gpucc-sm8150.c new file mode 100644 index 000000000000..54036d50da4c --- /dev/null +++ b/drivers/clk/qcom/gpucc-sm8150.c @@ -0,0 +1,334 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2020, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "clk-alpha-pll.h" +#include "clk-branch.h" +#include "clk-rcg.h" +#include "clk-regmap.h" +#include "common.h" +#include "vdd-level-sm8150.h" + +static DEFINE_VDD_REGULATORS(vdd_cx, VDD_NUM, 1, vdd_corner); +static DEFINE_VDD_REGULATORS(vdd_mx, VDD_NUM, 1, vdd_corner); + +enum { + P_BI_TCXO, + P_CORE_BI_PLL_TEST_SE, + P_GPLL0_OUT_MAIN, + P_GPLL0_OUT_MAIN_DIV, + P_GPU_CC_PLL0_OUT_MAIN, + P_GPU_CC_PLL1_OUT_MAIN, +}; + +static struct pll_vco trion_vco[] = { + { 249600000, 2000000000, 0 }, +}; + +/* 500MHz configuration */ +static struct alpha_pll_config gpu_cc_pll1_config = { + .l = 0x1A, + .alpha = 0xAAA, + .config_ctl_val = 0x20485699, + .config_ctl_hi_val = 0x00002267, + .config_ctl_hi1_val = 0x00000024, + .test_ctl_val = 0x00000000, + .test_ctl_hi_val = 0x00000000, + .test_ctl_hi1_val = 0x00000020, + .user_ctl_val = 0x00000000, + .user_ctl_hi_val = 0x00000805, + .user_ctl_hi1_val = 0x000000D0, +}; + +static struct clk_alpha_pll gpu_cc_pll1 = { + .offset = 0x100, + .vco_table = trion_vco, + .num_vco = ARRAY_SIZE(trion_vco), + .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_TRION], + .config = &gpu_cc_pll1_config, + .clkr = { + .hw.init = &(struct clk_init_data){ + .name = "gpu_cc_pll1", + .parent_data = &(const struct clk_parent_data){ + .fw_name = "bi_tcxo", + }, + .num_parents = 1, + .ops = &clk_trion_pll_ops, + }, + .vdd_data = { + .vdd_class = &vdd_mx, + .num_rate_max = VDD_NUM, + .rate_max = (unsigned long[VDD_NUM]) { + [VDD_MIN] = 615000000, + [VDD_LOW] = 1066000000, + [VDD_LOW_L1] = 1600000000, + [VDD_NOMINAL] = 2000000000}, + }, + }, +}; + +static const struct parent_map gpu_cc_parent_map_0[] = { + { P_BI_TCXO, 0 }, + { P_GPU_CC_PLL0_OUT_MAIN, 1 }, + { 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" }, + { .fw_name = "gpu_cc_pll0", .name = "gpu_cc_pll0" }, + { .hw = &gpu_cc_pll1.clkr.hw }, + { .fw_name = "gcc_gpu_gpll0_clk_src" }, + { .fw_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), + F(500000000, P_GPU_CC_PLL1_OUT_MAIN, 1, 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, + .enable_safe_config = true, + .clkr.hw.init = &(struct clk_init_data){ + .name = "gpu_cc_gmu_clk_src", + .parent_data = gpu_cc_parent_data_0, + .num_parents = 6, + .ops = &clk_rcg2_ops, + }, + .clkr.vdd_data = { + .vdd_class = &vdd_cx, + .num_rate_max = VDD_NUM, + .rate_max = (unsigned long[VDD_NUM]) { + [VDD_MIN] = 200000000, + [VDD_LOW] = 500000000}, + }, +}; + +static struct clk_branch gpu_cc_ahb_clk = { + .halt_reg = 0x1078, + .halt_check = BRANCH_HALT_DELAY, + .clkr = { + .enable_reg = 0x1078, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gpu_cc_ahb_clk", + .flags = CLK_IS_CRITICAL, + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch gpu_cc_crc_ahb_clk = { + .halt_reg = 0x107c, + .halt_check = BRANCH_HALT_VOTED, + .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_VOTED, + .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_VOTED, + .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 clk_branch gpu_cc_gx_gmu_clk = { + .halt_reg = 0x1064, + .halt_check = BRANCH_HALT, + .clkr = { + .enable_reg = 0x1064, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gpu_cc_gx_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_sleep_clk = { + .halt_reg = 0x1090, + .halt_check = BRANCH_HALT_VOTED, + .clkr = { + .enable_reg = 0x1090, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gpu_cc_sleep_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_regmap *gpu_cc_sm8150_clocks[] = { + [GPU_CC_PLL1] = &gpu_cc_pll1.clkr, + [GPU_CC_AHB_CLK] = &gpu_cc_ahb_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_CXO_CLK] = &gpu_cc_cxo_clk.clkr, + [GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr, + [GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr, + [GPU_CC_SLEEP_CLK] = &gpu_cc_sleep_clk.clkr, +}; + +static const struct regmap_config gpu_cc_sm8150_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_sm8150_desc = { + .config = &gpu_cc_sm8150_regmap_config, + .clks = gpu_cc_sm8150_clocks, + .num_clks = ARRAY_SIZE(gpu_cc_sm8150_clocks), +}; + +static const struct of_device_id gpu_cc_sm8150_match_table[] = { + { .compatible = "qcom,sm8150-gpucc" }, + { .compatible = "qcom,sa8155-gpucc" }, + { } +}; +MODULE_DEVICE_TABLE(of, gpu_cc_sm8150_match_table); + +static int gpu_cc_sm8150_probe(struct platform_device *pdev) +{ + struct regmap *regmap; + int ret; + + vdd_cx.regulator[0] = devm_regulator_get(&pdev->dev, "vdd_cx"); + if (IS_ERR(vdd_cx.regulator[0])) { + if (PTR_ERR(vdd_cx.regulator[0]) != -EPROBE_DEFER) + dev_err(&pdev->dev, "Unable to get vdd_cx regulator\n"); + return PTR_ERR(vdd_cx.regulator[0]); + } + + vdd_mx.regulator[0] = devm_regulator_get(&pdev->dev, "vdd_mx"); + if (IS_ERR(vdd_mx.regulator[0])) { + if (PTR_ERR(vdd_mx.regulator[0]) != -EPROBE_DEFER) + dev_err(&pdev->dev, "Unable to get vdd_mx regulator\n"); + return PTR_ERR(vdd_mx.regulator[0]); + } + + regmap = qcom_cc_map(pdev, &gpu_cc_sm8150_desc); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + clk_trion_pll_configure(&gpu_cc_pll1, regmap, gpu_cc_pll1.config); + + ret = qcom_cc_really_probe(pdev, &gpu_cc_sm8150_desc, regmap); + if (ret) { + dev_err(&pdev->dev, "Failed to register GPU CC clocks\n"); + return ret; + } + + dev_info(&pdev->dev, "Registered GPU CC clocks\n"); + + return ret; +} + +static struct platform_driver gpu_cc_sm8150_driver = { + .probe = gpu_cc_sm8150_probe, + .driver = { + .name = "gpu_cc-sm8150", + .of_match_table = gpu_cc_sm8150_match_table, + }, +}; + +static int __init gpu_cc_sm8150_init(void) +{ + return platform_driver_register(&gpu_cc_sm8150_driver); +} +subsys_initcall(gpu_cc_sm8150_init); + +static void __exit gpu_cc_sm8150_exit(void) +{ + platform_driver_unregister(&gpu_cc_sm8150_driver); +} +module_exit(gpu_cc_sm8150_exit); + +MODULE_DESCRIPTION("QTI GPU_CC SM8150 Driver"); +MODULE_LICENSE("GPL v2");