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Message-ID: <CAA8EJppn9=gPFk1RRB9y50aU_G3J6QrsOVQ9GH5gT86D_hOAgQ@mail.gmail.com>
Date: Tue, 9 May 2023 20:15:08 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Jagadeesh Kona <quic_jkona@...cinc.com>
Cc: Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Michael Turquette <mturquette@...libre.com>,
Conor Dooley <conor+dt@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Taniya Das <quic_tdas@...cinc.com>,
linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] clk: qcom: videocc-sm8550: Add video clock controller
driver for SM8550
On Tue, 9 May 2023 at 19:14, Jagadeesh Kona <quic_jkona@...cinc.com> wrote:
>
> Add support for the video clock controller for video clients to be able
> to request for videocc clocks on SM8550 platform.
>
> Signed-off-by: Jagadeesh Kona <quic_jkona@...cinc.com>
> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
> ---
> drivers/clk/qcom/Kconfig | 10 +
> drivers/clk/qcom/Makefile | 1 +
> drivers/clk/qcom/videocc-sm8550.c | 468 ++++++++++++++++++++++++++++++
> 3 files changed, 479 insertions(+)
> create mode 100644 drivers/clk/qcom/videocc-sm8550.c
>
> diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
> index 12be3e2371b3..6bb9b4aff047 100644
> --- a/drivers/clk/qcom/Kconfig
> +++ b/drivers/clk/qcom/Kconfig
> @@ -925,6 +925,16 @@ config SM_VIDEOCC_8250
> Say Y if you want to support video devices and functionality such as
> video encode and decode.
>
> +config SM_VIDEOCC_8550
> + tristate "SM8550 Video Clock Controller"
> + select SM_GCC_8550
> + select QCOM_GDSC
> + help
> + Support for the video clock controller on Qualcomm Technologies, Inc.
> + SM8550 devices.
> + Say Y if you want to support video devices and functionality such as
> + video encode/decode.
> +
> 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 9ff4c373ad95..f0b95fc217aa 100644
> --- a/drivers/clk/qcom/Makefile
> +++ b/drivers/clk/qcom/Makefile
> @@ -127,6 +127,7 @@ obj-$(CONFIG_SM_GPUCC_8350) += gpucc-sm8350.o
> obj-$(CONFIG_SM_TCSRCC_8550) += tcsrcc-sm8550.o
> obj-$(CONFIG_SM_VIDEOCC_8150) += videocc-sm8150.o
> obj-$(CONFIG_SM_VIDEOCC_8250) += videocc-sm8250.o
> +obj-$(CONFIG_SM_VIDEOCC_8550) += videocc-sm8550.o
> obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o
> obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o
> obj-$(CONFIG_QCOM_HFPLL) += hfpll.o
> diff --git a/drivers/clk/qcom/videocc-sm8550.c b/drivers/clk/qcom/videocc-sm8550.c
> new file mode 100644
> index 000000000000..10e4b2725ddf
> --- /dev/null
> +++ b/drivers/clk/qcom/videocc-sm8550.c
> @@ -0,0 +1,468 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regmap.h>
> +
> +#include <dt-bindings/clock/qcom,sm8550-videocc.h>
> +
> +#include "clk-alpha-pll.h"
> +#include "clk-branch.h"
> +#include "clk-rcg.h"
> +#include "clk-regmap.h"
> +#include "clk-regmap-divider.h"
> +#include "common.h"
> +#include "gdsc.h"
> +#include "reset.h"
> +
> +enum {
> + DT_BI_TCXO,
Any additional handling for gcc_video_ahb clk? It doesn't seem to be
used as a parent. Probably you intended to use it as a pm_clk?
> +};
> +
> +enum {
> + P_BI_TCXO,
> + P_VIDEO_CC_PLL0_OUT_MAIN,
> + P_VIDEO_CC_PLL1_OUT_MAIN,
> +};
> +
> +static const struct pll_vco lucid_ole_vco[] = {
> + { 249600000, 2300000000, 0 },
> +};
> +
> +static const struct alpha_pll_config video_cc_pll0_config = {
> + .l = 0x44000025,
> + .alpha = 0x8000,
> + .config_ctl_val = 0x20485699,
> + .config_ctl_hi_val = 0x00182261,
> + .config_ctl_hi1_val = 0x82aa299c,
> + .test_ctl_val = 0x00000000,
> + .test_ctl_hi_val = 0x00000003,
> + .test_ctl_hi1_val = 0x00009000,
> + .test_ctl_hi2_val = 0x00000034,
> + .user_ctl_val = 0x00000000,
> + .user_ctl_hi_val = 0x00000005,
> +};
> +
> +static struct clk_alpha_pll video_cc_pll0 = {
> + .offset = 0x0,
> + .vco_table = lucid_ole_vco,
> + .num_vco = ARRAY_SIZE(lucid_ole_vco),
> + .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE],
> + .clkr = {
> + .hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_pll0",
> + .parent_data = &(const struct clk_parent_data) {
> + .index = DT_BI_TCXO,
> + },
> + .num_parents = 1,
> + .ops = &clk_alpha_pll_lucid_ole_ops,
> + },
> + },
> +};
> +
> +static const struct alpha_pll_config video_cc_pll1_config = {
> + .l = 0x44000036,
> + .alpha = 0xb000,
> + .config_ctl_val = 0x20485699,
> + .config_ctl_hi_val = 0x00182261,
> + .config_ctl_hi1_val = 0x82aa299c,
> + .test_ctl_val = 0x00000000,
> + .test_ctl_hi_val = 0x00000003,
> + .test_ctl_hi1_val = 0x00009000,
> + .test_ctl_hi2_val = 0x00000034,
> + .user_ctl_val = 0x00000000,
> + .user_ctl_hi_val = 0x00000005,
> +};
> +
> +static struct clk_alpha_pll video_cc_pll1 = {
> + .offset = 0x1000,
> + .vco_table = lucid_ole_vco,
> + .num_vco = ARRAY_SIZE(lucid_ole_vco),
> + .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE],
> + .clkr = {
> + .hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_pll1",
> + .parent_data = &(const struct clk_parent_data) {
> + .index = DT_BI_TCXO,
> + },
> + .num_parents = 1,
> + .ops = &clk_alpha_pll_lucid_ole_ops,
> + },
> + },
> +};
> +
> +static const struct parent_map video_cc_parent_map_0[] = {
> + { P_BI_TCXO, 0 },
> + { P_VIDEO_CC_PLL0_OUT_MAIN, 1 },
> +};
> +
> +static const struct clk_parent_data video_cc_parent_data_0[] = {
> + { .index = DT_BI_TCXO },
> + { .hw = &video_cc_pll0.clkr.hw },
> +};
> +
> +static const struct parent_map video_cc_parent_map_1[] = {
> + { P_BI_TCXO, 0 },
> + { P_VIDEO_CC_PLL1_OUT_MAIN, 1 },
> +};
> +
> +static const struct clk_parent_data video_cc_parent_data_1[] = {
> + { .index = DT_BI_TCXO },
> + { .hw = &video_cc_pll1.clkr.hw },
> +};
> +
> +static const struct freq_tbl ftbl_video_cc_mvs0_clk_src[] = {
> + F(720000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
> + F(1014000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
> + F(1098000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
> + F(1332000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
> + F(1600000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
> + { }
> +};
> +
> +static struct clk_rcg2 video_cc_mvs0_clk_src = {
> + .cmd_rcgr = 0x8000,
> + .mnd_width = 0,
> + .hid_width = 5,
> + .parent_map = video_cc_parent_map_0,
> + .freq_tbl = ftbl_video_cc_mvs0_clk_src,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs0_clk_src",
> + .parent_data = video_cc_parent_data_0,
> + .num_parents = ARRAY_SIZE(video_cc_parent_data_0),
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_rcg2_shared_ops,
> + },
> +};
> +
> +static const struct freq_tbl ftbl_video_cc_mvs1_clk_src[] = {
> + F(1050000000, P_VIDEO_CC_PLL1_OUT_MAIN, 1, 0, 0),
> + F(1350000000, P_VIDEO_CC_PLL1_OUT_MAIN, 1, 0, 0),
> + F(1500000000, P_VIDEO_CC_PLL1_OUT_MAIN, 1, 0, 0),
> + F(1650000000, P_VIDEO_CC_PLL1_OUT_MAIN, 1, 0, 0),
> + { }
> +};
> +
> +static struct clk_rcg2 video_cc_mvs1_clk_src = {
> + .cmd_rcgr = 0x8018,
> + .mnd_width = 0,
> + .hid_width = 5,
> + .parent_map = video_cc_parent_map_1,
> + .freq_tbl = ftbl_video_cc_mvs1_clk_src,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs1_clk_src",
> + .parent_data = video_cc_parent_data_1,
> + .num_parents = ARRAY_SIZE(video_cc_parent_data_1),
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_rcg2_shared_ops,
> + },
> +};
> +
> +static struct clk_regmap_div video_cc_mvs0_div_clk_src = {
> + .reg = 0x80c4,
> + .shift = 0,
> + .width = 4,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs0_div_clk_src",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs0_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_regmap_div_ro_ops,
> + },
> +};
> +
> +static struct clk_regmap_div video_cc_mvs0c_div2_div_clk_src = {
> + .reg = 0x8070,
> + .shift = 0,
> + .width = 4,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs0c_div2_div_clk_src",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs0_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_regmap_div_ro_ops,
> + },
> +};
> +
> +static struct clk_regmap_div video_cc_mvs1_div_clk_src = {
> + .reg = 0x80ec,
> + .shift = 0,
> + .width = 4,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs1_div_clk_src",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs1_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_regmap_div_ro_ops,
> + },
> +};
> +
> +static struct clk_regmap_div video_cc_mvs1c_div2_div_clk_src = {
> + .reg = 0x809c,
> + .shift = 0,
> + .width = 4,
> + .clkr.hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs1c_div2_div_clk_src",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs1_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_regmap_div_ro_ops,
> + },
> +};
> +
> +static struct clk_branch video_cc_mvs0_clk = {
> + .halt_reg = 0x80b8,
> + .halt_check = BRANCH_HALT_SKIP,
> + .hwcg_reg = 0x80b8,
> + .hwcg_bit = 1,
> + .clkr = {
> + .enable_reg = 0x80b8,
> + .enable_mask = BIT(0),
> + .hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs0_clk",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs0_div_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_branch2_ops,
> + },
> + },
> +};
> +
> +static struct clk_branch video_cc_mvs0c_clk = {
> + .halt_reg = 0x8064,
> + .halt_check = BRANCH_HALT,
> + .clkr = {
> + .enable_reg = 0x8064,
> + .enable_mask = BIT(0),
> + .hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs0c_clk",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs0c_div2_div_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_branch2_ops,
> + },
> + },
> +};
> +
> +static struct clk_branch video_cc_mvs1_clk = {
> + .halt_reg = 0x80e0,
> + .halt_check = BRANCH_HALT_SKIP,
> + .hwcg_reg = 0x80e0,
> + .hwcg_bit = 1,
> + .clkr = {
> + .enable_reg = 0x80e0,
> + .enable_mask = BIT(0),
> + .hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs1_clk",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs1_div_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_branch2_ops,
> + },
> + },
> +};
> +
> +static struct clk_branch video_cc_mvs1c_clk = {
> + .halt_reg = 0x8090,
> + .halt_check = BRANCH_HALT,
> + .clkr = {
> + .enable_reg = 0x8090,
> + .enable_mask = BIT(0),
> + .hw.init = &(const struct clk_init_data) {
> + .name = "video_cc_mvs1c_clk",
> + .parent_hws = (const struct clk_hw*[]) {
> + &video_cc_mvs1c_div2_div_clk_src.clkr.hw,
> + },
> + .num_parents = 1,
> + .flags = CLK_SET_RATE_PARENT,
> + .ops = &clk_branch2_ops,
> + },
> + },
> +};
> +
> +static struct gdsc video_cc_mvs0c_gdsc = {
> + .gdscr = 0x804c,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0x6,
> + .pd = {
> + .name = "video_cc_mvs0c_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> + .flags = RETAIN_FF_ENABLE,
> +};
> +
> +static struct gdsc video_cc_mvs0_gdsc = {
> + .gdscr = 0x80a4,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0x6,
> + .pd = {
> + .name = "video_cc_mvs0_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> + .parent = &video_cc_mvs0c_gdsc.pd,
> + .flags = RETAIN_FF_ENABLE | HW_CTRL,
> +};
> +
> +static struct gdsc video_cc_mvs1c_gdsc = {
> + .gdscr = 0x8078,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0x6,
> + .pd = {
> + .name = "video_cc_mvs1c_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> + .flags = RETAIN_FF_ENABLE,
> +};
> +
> +static struct gdsc video_cc_mvs1_gdsc = {
> + .gdscr = 0x80cc,
> + .en_rest_wait_val = 0x2,
> + .en_few_wait_val = 0x2,
> + .clk_dis_wait_val = 0x6,
> + .pd = {
> + .name = "video_cc_mvs1_gdsc",
> + },
> + .pwrsts = PWRSTS_OFF_ON,
> + .parent = &video_cc_mvs1c_gdsc.pd,
> + .flags = RETAIN_FF_ENABLE | HW_CTRL,
> +};
> +
> +static struct clk_regmap *video_cc_sm8550_clocks[] = {
> + [VIDEO_CC_MVS0_CLK] = &video_cc_mvs0_clk.clkr,
> + [VIDEO_CC_MVS0_CLK_SRC] = &video_cc_mvs0_clk_src.clkr,
> + [VIDEO_CC_MVS0_DIV_CLK_SRC] = &video_cc_mvs0_div_clk_src.clkr,
> + [VIDEO_CC_MVS0C_CLK] = &video_cc_mvs0c_clk.clkr,
> + [VIDEO_CC_MVS0C_DIV2_DIV_CLK_SRC] = &video_cc_mvs0c_div2_div_clk_src.clkr,
> + [VIDEO_CC_MVS1_CLK] = &video_cc_mvs1_clk.clkr,
> + [VIDEO_CC_MVS1_CLK_SRC] = &video_cc_mvs1_clk_src.clkr,
> + [VIDEO_CC_MVS1_DIV_CLK_SRC] = &video_cc_mvs1_div_clk_src.clkr,
> + [VIDEO_CC_MVS1C_CLK] = &video_cc_mvs1c_clk.clkr,
> + [VIDEO_CC_MVS1C_DIV2_DIV_CLK_SRC] = &video_cc_mvs1c_div2_div_clk_src.clkr,
> + [VIDEO_CC_PLL0] = &video_cc_pll0.clkr,
> + [VIDEO_CC_PLL1] = &video_cc_pll1.clkr,
> +};
> +
> +static struct gdsc *video_cc_sm8550_gdscs[] = {
> + [VIDEO_CC_MVS0C_GDSC] = &video_cc_mvs0c_gdsc,
> + [VIDEO_CC_MVS0_GDSC] = &video_cc_mvs0_gdsc,
> + [VIDEO_CC_MVS1C_GDSC] = &video_cc_mvs1c_gdsc,
> + [VIDEO_CC_MVS1_GDSC] = &video_cc_mvs1_gdsc,
> +};
> +
> +static const struct qcom_reset_map video_cc_sm8550_resets[] = {
> + [CVP_VIDEO_CC_INTERFACE_BCR] = { 0x80f0 },
> + [CVP_VIDEO_CC_MVS0_BCR] = { 0x80a0 },
> + [CVP_VIDEO_CC_MVS0C_BCR] = { 0x8048 },
> + [CVP_VIDEO_CC_MVS1_BCR] = { 0x80c8 },
> + [CVP_VIDEO_CC_MVS1C_BCR] = { 0x8074 },
Please rename them to start with the VIDEO_CC prefix.
> + [VIDEO_CC_MVS0C_CLK_ARES] = { 0x8064, 2 },
> + [VIDEO_CC_MVS1C_CLK_ARES] = { 0x8090, 2 },
> +};
> +
> +static const struct regmap_config video_cc_sm8550_regmap_config = {
> + .reg_bits = 32,
> + .reg_stride = 4,
> + .val_bits = 32,
> + .max_register = 0x9f4c,
> + .fast_io = true,
> +};
> +
> +static struct qcom_cc_desc video_cc_sm8550_desc = {
> + .config = &video_cc_sm8550_regmap_config,
> + .clks = video_cc_sm8550_clocks,
> + .num_clks = ARRAY_SIZE(video_cc_sm8550_clocks),
> + .resets = video_cc_sm8550_resets,
> + .num_resets = ARRAY_SIZE(video_cc_sm8550_resets),
> + .gdscs = video_cc_sm8550_gdscs,
> + .num_gdscs = ARRAY_SIZE(video_cc_sm8550_gdscs),
> +};
> +
> +static const struct of_device_id video_cc_sm8550_match_table[] = {
> + { .compatible = "qcom,sm8550-videocc" },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, video_cc_sm8550_match_table);
> +
> +static int video_cc_sm8550_probe(struct platform_device *pdev)
> +{
> + struct regmap *regmap;
> + int ret;
> +
> + ret = devm_pm_runtime_enable(&pdev->dev);
> + if (ret)
> + return ret;
> +
> + ret = pm_runtime_resume_and_get(&pdev->dev);
> + if (ret)
> + return ret;
> +
> + regmap = qcom_cc_map(pdev, &video_cc_sm8550_desc);
> + if (IS_ERR(regmap)) {
> + pm_runtime_put(&pdev->dev);
> + return PTR_ERR(regmap);
> + }
> +
> + clk_lucid_ole_pll_configure(&video_cc_pll0, regmap, &video_cc_pll0_config);
> + clk_lucid_ole_pll_configure(&video_cc_pll1, regmap, &video_cc_pll1_config);
> +
> + /*
> + * Keep clocks always enabled:
> + * video_cc_ahb_clk
> + * video_cc_sleep_clk
> + * video_cc_xo_clk
> + */
> + regmap_update_bits(regmap, 0x80f4, BIT(0), BIT(0));
> + regmap_update_bits(regmap, 0x8140, BIT(0), BIT(0));
> + regmap_update_bits(regmap, 0x8124, BIT(0), BIT(0));
> +
> + ret = qcom_cc_really_probe(pdev, &video_cc_sm8550_desc, regmap);
> +
> + pm_runtime_put(&pdev->dev);
> +
> + return ret;
> +}
> +
> +static struct platform_driver video_cc_sm8550_driver = {
> + .probe = video_cc_sm8550_probe,
> + .driver = {
> + .name = "video_cc-sm8550",
> + .of_match_table = video_cc_sm8550_match_table,
> + },
> +};
> +
> +static int __init video_cc_sm8550_init(void)
> +{
> + return platform_driver_register(&video_cc_sm8550_driver);
> +}
> +subsys_initcall(video_cc_sm8550_init);
module_platform_driver() instead? There is no need to register videocc
at the subsys level.
> +
> +static void __exit video_cc_sm8550_exit(void)
> +{
> + platform_driver_unregister(&video_cc_sm8550_driver);
> +}
> +module_exit(video_cc_sm8550_exit);
> +
> +MODULE_DESCRIPTION("QTI VIDEO_CC SM8550 Driver");
> +MODULE_LICENSE("GPL");
--
With best wishes
Dmitry
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