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3e0f01d6c7
Add support for the graphics clock controller found on SC7280 based devices. This would allow graphics drivers to probe and control their clocks. Signed-off-by: Taniya Das <tdas@codeaurora.org> Link: https://lore.kernel.org/r/1626189143-12957-6-git-send-email-tdas@codeaurora.org Signed-off-by: Stephen Boyd <sboyd@kernel.org>
492 lines
12 KiB
C
492 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2021, The Linux Foundation. All rights reserved.
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*/
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#include <linux/clk-provider.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <dt-bindings/clock/qcom,gpucc-sc7280.h>
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#include "clk-alpha-pll.h"
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#include "clk-branch.h"
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#include "clk-rcg.h"
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#include "clk-regmap-divider.h"
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#include "common.h"
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#include "reset.h"
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#include "gdsc.h"
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enum {
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P_BI_TCXO,
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P_GCC_GPU_GPLL0_CLK_SRC,
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P_GCC_GPU_GPLL0_DIV_CLK_SRC,
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P_GPU_CC_PLL0_OUT_MAIN,
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P_GPU_CC_PLL1_OUT_MAIN,
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};
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static const struct pll_vco lucid_vco[] = {
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{ 249600000, 2000000000, 0 },
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};
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static struct clk_alpha_pll gpu_cc_pll0 = {
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.offset = 0x0,
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.vco_table = lucid_vco,
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.num_vco = ARRAY_SIZE(lucid_vco),
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.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
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.clkr = {
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_pll0",
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.parent_data = &(const struct clk_parent_data){
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.fw_name = "bi_tcxo",
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},
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.num_parents = 1,
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.ops = &clk_alpha_pll_lucid_ops,
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},
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},
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};
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/* 500MHz Configuration */
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static const struct alpha_pll_config gpu_cc_pll1_config = {
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.l = 0x1A,
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.alpha = 0xAAA,
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.config_ctl_val = 0x20485699,
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.config_ctl_hi_val = 0x00002261,
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.config_ctl_hi1_val = 0x329A299C,
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.user_ctl_val = 0x00000001,
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.user_ctl_hi_val = 0x00000805,
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.user_ctl_hi1_val = 0x00000000,
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};
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static struct clk_alpha_pll gpu_cc_pll1 = {
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.offset = 0x100,
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.vco_table = lucid_vco,
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.num_vco = ARRAY_SIZE(lucid_vco),
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.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
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.clkr = {
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_pll1",
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.parent_data = &(const struct clk_parent_data){
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.fw_name = "bi_tcxo",
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},
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.num_parents = 1,
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.ops = &clk_alpha_pll_lucid_ops,
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},
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},
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};
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static const struct parent_map gpu_cc_parent_map_0[] = {
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{ P_BI_TCXO, 0 },
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{ P_GPU_CC_PLL0_OUT_MAIN, 1 },
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{ P_GPU_CC_PLL1_OUT_MAIN, 3 },
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{ P_GCC_GPU_GPLL0_CLK_SRC, 5 },
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{ P_GCC_GPU_GPLL0_DIV_CLK_SRC, 6 },
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};
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static const struct clk_parent_data gpu_cc_parent_data_0[] = {
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{ .fw_name = "bi_tcxo" },
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{ .hw = &gpu_cc_pll0.clkr.hw },
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{ .hw = &gpu_cc_pll1.clkr.hw },
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{ .fw_name = "gcc_gpu_gpll0_clk_src" },
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{ .fw_name = "gcc_gpu_gpll0_div_clk_src" },
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};
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static const struct parent_map gpu_cc_parent_map_1[] = {
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{ P_BI_TCXO, 0 },
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{ P_GPU_CC_PLL1_OUT_MAIN, 3 },
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{ P_GCC_GPU_GPLL0_CLK_SRC, 5 },
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{ P_GCC_GPU_GPLL0_DIV_CLK_SRC, 6 },
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};
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static const struct clk_parent_data gpu_cc_parent_data_1[] = {
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{ .fw_name = "bi_tcxo", },
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{ .hw = &gpu_cc_pll1.clkr.hw },
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{ .fw_name = "gcc_gpu_gpll0_clk_src", },
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{ .fw_name = "gcc_gpu_gpll0_div_clk_src", },
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};
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static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
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F(19200000, P_BI_TCXO, 1, 0, 0),
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F(200000000, P_GCC_GPU_GPLL0_DIV_CLK_SRC, 1.5, 0, 0),
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F(500000000, P_GPU_CC_PLL1_OUT_MAIN, 1, 0, 0),
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{ }
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};
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static struct clk_rcg2 gpu_cc_gmu_clk_src = {
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.cmd_rcgr = 0x1120,
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.mnd_width = 0,
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.hid_width = 5,
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.parent_map = gpu_cc_parent_map_0,
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.freq_tbl = ftbl_gpu_cc_gmu_clk_src,
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.clkr.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_gmu_clk_src",
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.parent_data = gpu_cc_parent_data_0,
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.num_parents = ARRAY_SIZE(gpu_cc_parent_data_0),
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.ops = &clk_rcg2_shared_ops,
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},
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};
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static const struct freq_tbl ftbl_gpu_cc_hub_clk_src[] = {
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F(150000000, P_GCC_GPU_GPLL0_DIV_CLK_SRC, 2, 0, 0),
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F(240000000, P_GCC_GPU_GPLL0_CLK_SRC, 2.5, 0, 0),
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F(300000000, P_GCC_GPU_GPLL0_CLK_SRC, 2, 0, 0),
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{ }
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};
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static struct clk_rcg2 gpu_cc_hub_clk_src = {
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.cmd_rcgr = 0x117c,
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.mnd_width = 0,
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.hid_width = 5,
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.parent_map = gpu_cc_parent_map_1,
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.freq_tbl = ftbl_gpu_cc_hub_clk_src,
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.clkr.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_hub_clk_src",
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.parent_data = gpu_cc_parent_data_1,
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.num_parents = ARRAY_SIZE(gpu_cc_parent_data_1),
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.ops = &clk_rcg2_shared_ops,
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},
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};
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static struct clk_regmap_div gpu_cc_hub_ahb_div_clk_src = {
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.reg = 0x11c0,
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.shift = 0,
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.width = 4,
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.clkr.hw.init = &(struct clk_init_data) {
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.name = "gpu_cc_hub_ahb_div_clk_src",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_hub_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_regmap_div_ro_ops,
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},
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};
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static struct clk_regmap_div gpu_cc_hub_cx_int_div_clk_src = {
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.reg = 0x11bc,
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.shift = 0,
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.width = 4,
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.clkr.hw.init = &(struct clk_init_data) {
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.name = "gpu_cc_hub_cx_int_div_clk_src",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_hub_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_regmap_div_ro_ops,
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},
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};
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static struct clk_branch gpu_cc_ahb_clk = {
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.halt_reg = 0x1078,
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.halt_check = BRANCH_HALT_DELAY,
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.clkr = {
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.enable_reg = 0x1078,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_ahb_clk",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_hub_ahb_div_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_crc_ahb_clk = {
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.halt_reg = 0x107c,
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.halt_check = BRANCH_HALT_VOTED,
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.clkr = {
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.enable_reg = 0x107c,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_crc_ahb_clk",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_hub_ahb_div_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_cx_gmu_clk = {
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.halt_reg = 0x1098,
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.halt_check = BRANCH_HALT,
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.clkr = {
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.enable_reg = 0x1098,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_cx_gmu_clk",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_gmu_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_branch2_aon_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
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.halt_reg = 0x108c,
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.halt_check = BRANCH_HALT_VOTED,
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.clkr = {
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.enable_reg = 0x108c,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_cx_snoc_dvm_clk",
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_cxo_aon_clk = {
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.halt_reg = 0x1004,
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.halt_check = BRANCH_HALT_VOTED,
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.clkr = {
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.enable_reg = 0x1004,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_cxo_aon_clk",
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_cxo_clk = {
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.halt_reg = 0x109c,
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.halt_check = BRANCH_HALT,
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.clkr = {
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.enable_reg = 0x109c,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_cxo_clk",
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.ops = &clk_branch2_aon_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_gx_gmu_clk = {
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.halt_reg = 0x1064,
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.halt_check = BRANCH_HALT,
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.clkr = {
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.enable_reg = 0x1064,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_gx_gmu_clk",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_gmu_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_hlos1_vote_gpu_smmu_clk = {
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.halt_reg = 0x5000,
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.halt_check = BRANCH_VOTED,
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.clkr = {
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.enable_reg = 0x5000,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_hlos1_vote_gpu_smmu_clk",
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_hub_aon_clk = {
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.halt_reg = 0x1178,
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.halt_check = BRANCH_HALT,
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.clkr = {
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.enable_reg = 0x1178,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_hub_aon_clk",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_hub_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_branch2_aon_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_hub_cx_int_clk = {
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.halt_reg = 0x1204,
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.halt_check = BRANCH_HALT,
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.clkr = {
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.enable_reg = 0x1204,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_hub_cx_int_clk",
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.parent_hws = (const struct clk_hw*[]){
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&gpu_cc_hub_cx_int_div_clk_src.clkr.hw,
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},
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.num_parents = 1,
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.flags = CLK_SET_RATE_PARENT,
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.ops = &clk_branch2_aon_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_mnd1x_0_gfx3d_clk = {
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.halt_reg = 0x802c,
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.halt_check = BRANCH_HALT_SKIP,
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.clkr = {
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.enable_reg = 0x802c,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_mnd1x_0_gfx3d_clk",
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_mnd1x_1_gfx3d_clk = {
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.halt_reg = 0x8030,
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.halt_check = BRANCH_HALT_SKIP,
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.clkr = {
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.enable_reg = 0x8030,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_mnd1x_1_gfx3d_clk",
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct clk_branch gpu_cc_sleep_clk = {
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.halt_reg = 0x1090,
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.halt_check = BRANCH_HALT_VOTED,
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.clkr = {
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.enable_reg = 0x1090,
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.enable_mask = BIT(0),
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.hw.init = &(struct clk_init_data){
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.name = "gpu_cc_sleep_clk",
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.ops = &clk_branch2_ops,
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},
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},
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};
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static struct gdsc cx_gdsc = {
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.gdscr = 0x106c,
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.gds_hw_ctrl = 0x1540,
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.pd = {
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.name = "cx_gdsc",
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},
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.pwrsts = PWRSTS_OFF_ON,
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.flags = VOTABLE | RETAIN_FF_ENABLE,
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};
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static struct gdsc gx_gdsc = {
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.gdscr = 0x100c,
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.clamp_io_ctrl = 0x1508,
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.pd = {
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.name = "gx_gdsc",
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.power_on = gdsc_gx_do_nothing_enable,
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},
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.pwrsts = PWRSTS_OFF_ON,
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.flags = CLAMP_IO | RETAIN_FF_ENABLE,
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};
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static struct gdsc *gpu_cc_sc7180_gdscs[] = {
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[GPU_CC_CX_GDSC] = &cx_gdsc,
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[GPU_CC_GX_GDSC] = &gx_gdsc,
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};
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static struct clk_regmap *gpu_cc_sc7280_clocks[] = {
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[GPU_CC_AHB_CLK] = &gpu_cc_ahb_clk.clkr,
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[GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
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[GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
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[GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
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[GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
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[GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
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[GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
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[GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr,
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[GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK] = &gpu_cc_hlos1_vote_gpu_smmu_clk.clkr,
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[GPU_CC_HUB_AHB_DIV_CLK_SRC] = &gpu_cc_hub_ahb_div_clk_src.clkr,
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[GPU_CC_HUB_AON_CLK] = &gpu_cc_hub_aon_clk.clkr,
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[GPU_CC_HUB_CLK_SRC] = &gpu_cc_hub_clk_src.clkr,
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[GPU_CC_HUB_CX_INT_CLK] = &gpu_cc_hub_cx_int_clk.clkr,
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[GPU_CC_HUB_CX_INT_DIV_CLK_SRC] = &gpu_cc_hub_cx_int_div_clk_src.clkr,
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[GPU_CC_MND1X_0_GFX3D_CLK] = &gpu_cc_mnd1x_0_gfx3d_clk.clkr,
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[GPU_CC_MND1X_1_GFX3D_CLK] = &gpu_cc_mnd1x_1_gfx3d_clk.clkr,
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[GPU_CC_PLL0] = &gpu_cc_pll0.clkr,
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[GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
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[GPU_CC_SLEEP_CLK] = &gpu_cc_sleep_clk.clkr,
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};
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static const struct regmap_config gpu_cc_sc7280_regmap_config = {
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.reg_bits = 32,
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.reg_stride = 4,
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.val_bits = 32,
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.max_register = 0x8030,
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.fast_io = true,
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};
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static const struct qcom_cc_desc gpu_cc_sc7280_desc = {
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.config = &gpu_cc_sc7280_regmap_config,
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.clks = gpu_cc_sc7280_clocks,
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.num_clks = ARRAY_SIZE(gpu_cc_sc7280_clocks),
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|
.gdscs = gpu_cc_sc7180_gdscs,
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.num_gdscs = ARRAY_SIZE(gpu_cc_sc7180_gdscs),
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|
};
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|
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static const struct of_device_id gpu_cc_sc7280_match_table[] = {
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{ .compatible = "qcom,sc7280-gpucc" },
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|
{ }
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|
};
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MODULE_DEVICE_TABLE(of, gpu_cc_sc7280_match_table);
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|
|
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static int gpu_cc_sc7280_probe(struct platform_device *pdev)
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|
{
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|
struct regmap *regmap;
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|
|
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regmap = qcom_cc_map(pdev, &gpu_cc_sc7280_desc);
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if (IS_ERR(regmap))
|
|
return PTR_ERR(regmap);
|
|
|
|
clk_lucid_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
|
|
|
|
/*
|
|
* Keep the clocks always-ON
|
|
* GPU_CC_CB_CLK, GPUCC_CX_GMU_CLK
|
|
*/
|
|
regmap_update_bits(regmap, 0x1170, BIT(0), BIT(0));
|
|
regmap_update_bits(regmap, 0x1098, BIT(0), BIT(0));
|
|
|
|
return qcom_cc_really_probe(pdev, &gpu_cc_sc7280_desc, regmap);
|
|
}
|
|
|
|
static struct platform_driver gpu_cc_sc7280_driver = {
|
|
.probe = gpu_cc_sc7280_probe,
|
|
.driver = {
|
|
.name = "gpu_cc-sc7280",
|
|
.of_match_table = gpu_cc_sc7280_match_table,
|
|
},
|
|
};
|
|
|
|
static int __init gpu_cc_sc7280_init(void)
|
|
{
|
|
return platform_driver_register(&gpu_cc_sc7280_driver);
|
|
}
|
|
subsys_initcall(gpu_cc_sc7280_init);
|
|
|
|
static void __exit gpu_cc_sc7280_exit(void)
|
|
{
|
|
platform_driver_unregister(&gpu_cc_sc7280_driver);
|
|
}
|
|
module_exit(gpu_cc_sc7280_exit);
|
|
|
|
MODULE_DESCRIPTION("QTI GPU_CC SC7280 Driver");
|
|
MODULE_LICENSE("GPL v2");
|