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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
*/
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,gpucc-sdm845.h>
#include "common.h"
#include "clk-alpha-pll.h"
#include "clk-branch.h"
#include "clk-pll.h"
#include "clk-rcg.h"
#include "clk-regmap.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 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 char * const gpu_cc_parent_names_0[] = {
"bi_tcxo",
"gpu_cc_pll1",
"gcc_gpu_gpll0_clk_src",
"gcc_gpu_gpll0_div_clk_src",
"core_bi_pll_test_se",
};
static const struct alpha_pll_config gpu_cc_pll1_config = {
.l = 0x1a,
.alpha = 0xaab,
};
static struct clk_alpha_pll gpu_cc_pll1 = {
.offset = 0x100,
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
.clkr = {
.hw.init = &(struct clk_init_data){
.name = "gpu_cc_pll1",
.parent_names = (const char *[]){ "bi_tcxo" },
.num_parents = 1,
.ops = &clk_alpha_pll_fabia_ops,
},
},
};
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,
.clkr.hw.init = &(struct clk_init_data){
.name = "gpu_cc_gmu_clk_src",
.parent_names = gpu_cc_parent_names_0,
.num_parents = 5,
.ops = &clk_rcg2_shared_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_names = (const char *[]){
"gpu_cc_gmu_clk_src",
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.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 gpu_cx_gdsc = {
.gdscr = 0x106c,
.gds_hw_ctrl = 0x1540,
.pd = {
.name = "gpu_cx_gdsc",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = VOTABLE,
};
static struct gdsc gpu_gx_gdsc = {
.gdscr = 0x100c,
.clamp_io_ctrl = 0x1508,
.pd = {
.name = "gpu_gx_gdsc",
.power_on = gdsc_gx_do_nothing_enable,
},
.pwrsts = PWRSTS_OFF_ON,
.flags = CLAMP_IO | AON_RESET | POLL_CFG_GDSCR,
};
static struct clk_regmap *gpu_cc_sdm845_clocks[] = {
[GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
[GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
[GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
[GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
};
static struct gdsc *gpu_cc_sdm845_gdscs[] = {
[GPU_CX_GDSC] = &gpu_cx_gdsc,
[GPU_GX_GDSC] = &gpu_gx_gdsc,
};
static const struct regmap_config gpu_cc_sdm845_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_sdm845_desc = {
.config = &gpu_cc_sdm845_regmap_config,
.clks = gpu_cc_sdm845_clocks,
.num_clks = ARRAY_SIZE(gpu_cc_sdm845_clocks),
.gdscs = gpu_cc_sdm845_gdscs,
.num_gdscs = ARRAY_SIZE(gpu_cc_sdm845_gdscs),
};
static const struct of_device_id gpu_cc_sdm845_match_table[] = {
{ .compatible = "qcom,sdm845-gpucc" },
{ }
};
MODULE_DEVICE_TABLE(of, gpu_cc_sdm845_match_table);
static int gpu_cc_sdm845_probe(struct platform_device *pdev)
{
struct regmap *regmap;
unsigned int value, mask;
regmap = qcom_cc_map(pdev, &gpu_cc_sdm845_desc);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
clk_fabia_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
/*
* Configure gpu_cc_cx_gmu_clk with recommended
* wakeup/sleep settings
*/
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);
/* 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_sdm845_desc, regmap);
}
static struct platform_driver gpu_cc_sdm845_driver = {
.probe = gpu_cc_sdm845_probe,
.driver = {
.name = "sdm845-gpucc",
.of_match_table = gpu_cc_sdm845_match_table,
},
};
static int __init gpu_cc_sdm845_init(void)
{
return platform_driver_register(&gpu_cc_sdm845_driver);
}
subsys_initcall(gpu_cc_sdm845_init);
static void __exit gpu_cc_sdm845_exit(void)
{
platform_driver_unregister(&gpu_cc_sdm845_driver);
}
module_exit(gpu_cc_sdm845_exit);
MODULE_DESCRIPTION("QTI GPUCC SDM845 Driver");
MODULE_LICENSE("GPL v2");
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