diff options
Diffstat (limited to 'drivers/clk/qcom/gpucc-sdm845.c')
| -rw-r--r-- | drivers/clk/qcom/gpucc-sdm845.c | 94 |
1 files changed, 26 insertions, 68 deletions
diff --git a/drivers/clk/qcom/gpucc-sdm845.c b/drivers/clk/qcom/gpucc-sdm845.c index e40efba1bf7d..0d63b110a1fb 100644 --- a/drivers/clk/qcom/gpucc-sdm845.c +++ b/drivers/clk/qcom/gpucc-sdm845.c @@ -4,6 +4,7 @@ */ #include <linux/clk-provider.h> +#include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/regmap.h> @@ -22,33 +23,12 @@ #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 = { @@ -62,13 +42,29 @@ static struct clk_alpha_pll gpu_cc_pll1 = { .clkr = { .hw.init = &(struct clk_init_data){ .name = "gpu_cc_pll1", - .parent_names = (const char *[]){ "bi_tcxo" }, + .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 }, +}; + +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" }, +}; + 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), @@ -84,8 +80,8 @@ static struct clk_rcg2 gpu_cc_gmu_clk_src = { .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, + .parent_data = gpu_cc_parent_data_0, + .num_parents = ARRAY_SIZE(gpu_cc_parent_data_0), .ops = &clk_rcg2_shared_ops, }, }; @@ -98,8 +94,8 @@ static struct clk_branch gpu_cc_cx_gmu_clk = { .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", + .parent_hws = (const struct clk_hw*[]){ + &gpu_cc_gmu_clk_src.clkr.hw, }, .num_parents = 1, .flags = CLK_SET_RATE_PARENT, @@ -124,6 +120,7 @@ static struct clk_branch gpu_cc_cxo_clk = { static struct gdsc gpu_cx_gdsc = { .gdscr = 0x106c, .gds_hw_ctrl = 0x1540, + .clk_dis_wait_val = 0x8, .pd = { .name = "gpu_cx_gdsc", }, @@ -131,37 +128,12 @@ static struct gdsc gpu_cx_gdsc = { .flags = VOTABLE, }; -/* - * On SDM845 the GPU GX domain is *almost* entirely controlled by the GMU - * running in the CX domain so the CPU doesn't need to know anything about the - * GX domain EXCEPT.... - * - * Hardware constraints dictate that the GX be powered down before the CX. If - * the GMU crashes it could leave the GX on. In order to successfully bring back - * the device the CPU needs to disable the GX headswitch. There being no sane - * way to reach in and touch that register from deep inside the GPU driver we - * need to set up the infrastructure to be able to ensure that the GPU can - * ensure that the GX is off during this super special case. We do this by - * defining a GX gdsc with a dummy enable function and a "default" disable - * function. - * - * This allows us to attach with genpd_dev_pm_attach_by_name() in the GPU - * driver. During power up, nothing will happen from the CPU (and the GMU will - * power up normally but during power down this will ensure that the GX domain - * is *really* off - this gives us a semi standard way of doing what we need. - */ -static int gx_gdsc_enable(struct generic_pm_domain *domain) -{ - /* Do nothing but give genpd the impression that we were successful */ - return 0; -} - static struct gdsc gpu_gx_gdsc = { .gdscr = 0x100c, .clamp_io_ctrl = 0x1508, .pd = { .name = "gpu_gx_gdsc", - .power_on = gx_gdsc_enable, + .power_on = gdsc_gx_do_nothing_enable, }, .pwrsts = PWRSTS_OFF_ON, .flags = CLAMP_IO | AON_RESET | POLL_CFG_GDSCR, @@ -221,11 +193,7 @@ static int gpu_cc_sdm845_probe(struct platform_device *pdev) 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); + return qcom_cc_really_probe(&pdev->dev, &gpu_cc_sdm845_desc, regmap); } static struct platform_driver gpu_cc_sdm845_driver = { @@ -236,17 +204,7 @@ static struct platform_driver gpu_cc_sdm845_driver = { }, }; -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_platform_driver(gpu_cc_sdm845_driver); MODULE_DESCRIPTION("QTI GPUCC SDM845 Driver"); MODULE_LICENSE("GPL v2"); |