[PATCH 2/2] clk: qcom: Add video clock controller driver for SDM845

Amit Nischal
2018-04-24T13:32:51Z

Add support for the video clock controller found on SDM845
based devices. This would allow video drivers to probe and
control their clocks.

Signed-off-by: Amit Nischal <anischal@codeaurora.org>
---
drivers/clk/qcom/Kconfig | 11 ++
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/videocc-sdm845.c | 359 ++++++++++++++++++++++++++++++++++++++
3 files changed, 371 insertions(+)
create mode 100644 drivers/clk/qcom/videocc-sdm845.c

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index fb03d99..0464477 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -236,6 +236,17 @@ config SDM_GCC_845
Say Y if you want to use peripheral devices such as UART, SPI,
I2C, USB, UFS, SDDC, PCIe, etc.

+config SDM_VIDEOCC_845
+ tristate "SDM845 Video Clock Controller"
+ depends on COMMON_CLK_QCOM
+ select SDM_GCC_845
+ select QCOM_GDSC
+ help
+ Support for the video clock controller on Qualcomm Technologies, Inc
+ SDM845 devices.
+ Say Y if you want to support video devices and functionality such as
+ video encode and decode.
+
config SPMI_PMIC_CLKDIV
tristate "SPMI PMIC clkdiv Support"
depends on (COMMON_CLK_QCOM && SPMI) || COMPILE_TEST
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 23bf50c..7738f50 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -39,4 +39,5 @@ obj-$(CONFIG_QCOM_CLK_RPM) += clk-rpm.o
obj-$(CONFIG_QCOM_CLK_RPMH) += clk-rpmh.o
obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
obj-$(CONFIG_SDM_GCC_845) += gcc-sdm845.o
+obj-$(CONFIG_SDM_VIDEOCC_845) += videocc-sdm845.o
obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o
diff --git a/drivers/clk/qcom/videocc-sdm845.c b/drivers/clk/qcom/videocc-sdm845.c
new file mode 100644
index 0000000..726275a
--- /dev/null
+++ b/drivers/clk/qcom/videocc-sdm845.c
@@ -0,0 +1,359 @@
+// 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,videocc-sdm845.h>
+
+#include "common.h"
+#include "clk-alpha-pll.h"
+#include "clk-branch.h"
+#include "clk-rcg.h"
+#include "clk-regmap.h"
+#include "clk-pll.h"
+#include "gdsc.h"
+#include "reset.h"
+
+#define F(f, s, h, m, n) { (f), (s), (2 * (h) - 1), (m), (n) }
+
+enum {
+ P_BI_TCXO,
+ P_CORE_BI_PLL_TEST_SE,
+ P_VIDEO_PLL0_OUT_EVEN,
+ P_VIDEO_PLL0_OUT_MAIN,
+ P_VIDEO_PLL0_OUT_ODD,
+};
+
+static const struct parent_map video_cc_parent_map_0[] = {
+ { P_BI_TCXO, 0 },
+ { P_VIDEO_PLL0_OUT_MAIN, 1 },
+ { P_VIDEO_PLL0_OUT_EVEN, 2 },
+ { P_VIDEO_PLL0_OUT_ODD, 3 },
+ { P_CORE_BI_PLL_TEST_SE, 4 },
+};
+
+static const char * const video_cc_parent_names_0[] = {
+ "bi_tcxo",
+ "video_pll0",
+ "video_pll0_out_even",
+ "video_pll0_out_odd",
+ "core_bi_pll_test_se",
+};
+
+static const struct alpha_pll_config video_pll0_config = {
+ .l = 0x10,
+ .alpha = 0xaaab,
+};
+
+static struct clk_alpha_pll video_pll0 = {
+ .offset = 0x42c,
+ .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+ .clkr = {
+ .hw.init = &(struct clk_init_data){
+ .name = "video_pll0",
+ .parent_names = (const char *[]){ "bi_tcxo" },
+ .num_parents = 1,
+ .ops = &clk_alpha_pll_fabia_ops,
+ },
+ },
+};
+
+static const struct freq_tbl ftbl_video_cc_venus_clk_src[] = {
+ F(100000000, P_VIDEO_PLL0_OUT_MAIN, 4, 0, 0),
+ F(200000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
+ F(330000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
+ F(404000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
+ F(444000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
+ F(533000000, P_VIDEO_PLL0_OUT_MAIN, 1, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 video_cc_venus_clk_src = {
+ .cmd_rcgr = 0x7f0,
+ .mnd_width = 0,
+ .hid_width = 5,
+ .parent_map = video_cc_parent_map_0,
+ .freq_tbl = ftbl_video_cc_venus_clk_src,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "video_cc_venus_clk_src",
+ .parent_names = video_cc_parent_names_0,
+ .num_parents = 5,
+ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_rcg2_shared_ops,
+ },
+};
+
+static struct clk_branch video_cc_apb_clk = {
+ .halt_reg = 0x990,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x990,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_apb_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_at_clk = {
+ .halt_reg = 0x9f0,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x9f0,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_at_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_qdss_trig_clk = {
+ .halt_reg = 0x970,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x970,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_qdss_trig_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_qdss_tsctr_div8_clk = {
+ .halt_reg = 0x9d0,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x9d0,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_qdss_tsctr_div8_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_vcodec0_axi_clk = {
+ .halt_reg = 0x930,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x930,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_vcodec0_axi_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_vcodec0_core_clk = {
+ .halt_reg = 0x890,
+ .halt_check = BRANCH_VOTED,
+ .clkr = {
+ .enable_reg = 0x890,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_vcodec0_core_clk",
+ .parent_names = (const char *[]){
+ "video_cc_venus_clk_src",
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_vcodec1_axi_clk = {
+ .halt_reg = 0x950,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x950,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_vcodec1_axi_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_vcodec1_core_clk = {
+ .halt_reg = 0x8d0,
+ .halt_check = BRANCH_VOTED,
+ .clkr = {
+ .enable_reg = 0x8d0,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_vcodec1_core_clk",
+ .parent_names = (const char *[]){
+ "video_cc_venus_clk_src",
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_venus_ahb_clk = {
+ .halt_reg = 0x9b0,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x9b0,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_venus_ahb_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_venus_ctl_axi_clk = {
+ .halt_reg = 0x910,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x910,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_venus_ctl_axi_clk",
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct clk_branch video_cc_venus_ctl_core_clk = {
+ .halt_reg = 0x850,
+ .halt_check = BRANCH_HALT,
+ .clkr = {
+ .enable_reg = 0x850,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "video_cc_venus_ctl_core_clk",
+ .parent_names = (const char *[]){
+ "video_cc_venus_clk_src",
+ },
+ .num_parents = 1,
+ .flags = CLK_SET_RATE_PARENT,
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct gdsc venus_gdsc = {
+ .gdscr = 0x814,
+ .pd = {
+ .name = "venus_gdsc",
+ },
+ .cxcs = (unsigned int []){ 0x850, 0x910 },
+ .cxc_count = 2,
+ .pwrsts = PWRSTS_OFF_ON,
+ .flags = POLL_CFG_GDSCR,
+};
+
+static struct gdsc vcodec0_gdsc = {
+ .gdscr = 0x874,
+ .pd = {
+ .name = "vcodec0_gdsc",
+ },
+ .cxcs = (unsigned int []){ 0x890, 0x930 },
+ .cxc_count = 2,
+ .flags = HW_CTRL | POLL_CFG_GDSCR,
+ .pwrsts = PWRSTS_OFF_ON,
+};
+
+static struct gdsc vcodec1_gdsc = {
+ .gdscr = 0x8b4,
+ .pd = {
+ .name = "vcodec1_gdsc",
+ },
+ .cxcs = (unsigned int []){ 0x8d0, 0x950 },
+ .cxc_count = 2,
+ .flags = HW_CTRL | POLL_CFG_GDSCR,
+ .pwrsts = PWRSTS_OFF_ON,
+};
+
+static struct clk_regmap *video_cc_sdm845_clocks[] = {
+ [VIDEO_CC_APB_CLK] = &video_cc_apb_clk.clkr,
+ [VIDEO_CC_AT_CLK] = &video_cc_at_clk.clkr,
+ [VIDEO_CC_QDSS_TRIG_CLK] = &video_cc_qdss_trig_clk.clkr,
+ [VIDEO_CC_QDSS_TSCTR_DIV8_CLK] = &video_cc_qdss_tsctr_div8_clk.clkr,
+ [VIDEO_CC_VCODEC0_AXI_CLK] = &video_cc_vcodec0_axi_clk.clkr,
+ [VIDEO_CC_VCODEC0_CORE_CLK] = &video_cc_vcodec0_core_clk.clkr,
+ [VIDEO_CC_VCODEC1_AXI_CLK] = &video_cc_vcodec1_axi_clk.clkr,
+ [VIDEO_CC_VCODEC1_CORE_CLK] = &video_cc_vcodec1_core_clk.clkr,
+ [VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
+ [VIDEO_CC_VENUS_CLK_SRC] = &video_cc_venus_clk_src.clkr,
+ [VIDEO_CC_VENUS_CTL_AXI_CLK] = &video_cc_venus_ctl_axi_clk.clkr,
+ [VIDEO_CC_VENUS_CTL_CORE_CLK] = &video_cc_venus_ctl_core_clk.clkr,
+ [VIDEO_PLL0] = &video_pll0.clkr,
+};
+
+static struct gdsc *video_cc_sdm845_gdscs[] = {
+ [VENUS_GDSC] = &venus_gdsc,
+ [VCODEC0_GDSC] = &vcodec0_gdsc,
+ [VCODEC1_GDSC] = &vcodec1_gdsc,
+};
+
+static const struct regmap_config video_cc_sdm845_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0xb90,
+ .fast_io = true,
+};
+
+static const struct qcom_cc_desc video_cc_sdm845_desc = {
+ .config = &video_cc_sdm845_regmap_config,
+ .clks = video_cc_sdm845_clocks,
+ .num_clks = ARRAY_SIZE(video_cc_sdm845_clocks),
+ .gdscs = video_cc_sdm845_gdscs,
+ .num_gdscs = ARRAY_SIZE(video_cc_sdm845_gdscs),
+};
+
+static const struct of_device_id video_cc_sdm845_match_table[] = {
+ { .compatible = "qcom,videocc-sdm845" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, video_cc_sdm845_match_table);
+
+static int video_cc_sdm845_probe(struct platform_device *pdev)
+{
+ struct regmap *regmap;
+
+ regmap = qcom_cc_map(pdev, &video_cc_sdm845_desc);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);
+
+ return qcom_cc_really_probe(pdev, &video_cc_sdm845_desc, regmap);
+}
+
+static struct platform_driver video_cc_sdm845_driver = {
+ .probe = video_cc_sdm845_probe,
+ .driver = {
+ .name = "videocc-sdm845",
+ .of_match_table = video_cc_sdm845_match_table,
+ },
+};
+
+static int __init video_cc_sdm845_init(void)
+{
+ return platform_driver_register(&video_cc_sdm845_driver);
+}
+subsys_initcall(video_cc_sdm845_init);
+
+static void __exit video_cc_sdm845_exit(void)
+{
+ platform_driver_unregister(&video_cc_sdm845_driver);
+}
+module_exit(video_cc_sdm845_exit);
+
+MODULE_LICENSE("GPL v2");
--
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