From: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
To: mturquette@baylibre.com, sboyd@kernel.org
Cc: agross@kernel.org, bjorn.andersson@linaro.org,
marc.w.gonzalez@free.fr, linux-arm-msm@vger.kernel.org,
linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Subject: [PATCH v4 1/2] clk: qcom: Add MSM8998 GPU Clock Controller (GPUCC) driver
Date: Tue, 1 Oct 2019 18:16:40 -0700 [thread overview]
Message-ID: <20191002011640.36624-1-jeffrey.l.hugo@gmail.com> (raw)
In-Reply-To: <20191002011555.36571-1-jeffrey.l.hugo@gmail.com>
The GPUCC manages the clocks for the Adreno GPU found on MSM8998.
Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
---
drivers/clk/qcom/Kconfig | 9 +
drivers/clk/qcom/Makefile | 1 +
drivers/clk/qcom/gpucc-msm8998.c | 346 +++++++++++++++++++++++++++++++
3 files changed, 356 insertions(+)
create mode 100644 drivers/clk/qcom/gpucc-msm8998.c
diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 96efee18fa6c..31a70168327c 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -230,6 +230,15 @@ config MSM_MMCC_8998
Say Y if you want to support multimedia devices such as display,
graphics, video encode/decode, camera, etc.
+config MSM_GPUCC_8998
+ tristate "MSM8998 Graphics Clock Controller"
+ select MSM_GCC_8998
+ select QCOM_GDSC
+ help
+ Support for the graphics clock controller on MSM8998 devices.
+ Say Y if you want to support graphics controller devices and
+ functionality such as 3D graphics.
+
config QCS_GCC_404
tristate "QCS404 Global Clock Controller"
help
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 0ac3c1459313..616b68f91db6 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_MSM_GCC_8994) += gcc-msm8994.o
obj-$(CONFIG_MSM_GCC_8996) += gcc-msm8996.o
obj-$(CONFIG_MSM_LCC_8960) += lcc-msm8960.o
obj-$(CONFIG_MSM_GCC_8998) += gcc-msm8998.o
+obj-$(CONFIG_MSM_GPUCC_8998) += gpucc-msm8998.o
obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o
obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
obj-$(CONFIG_MSM_MMCC_8996) += mmcc-msm8996.o
diff --git a/drivers/clk/qcom/gpucc-msm8998.c b/drivers/clk/qcom/gpucc-msm8998.c
new file mode 100644
index 000000000000..f0ccb4963885
--- /dev/null
+++ b/drivers/clk/qcom/gpucc-msm8998.c
@@ -0,0 +1,346 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019, Jeffrey Hugo
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+#include <linux/clk.h>
+
+#include <dt-bindings/clock/qcom,gpucc-msm8998.h>
+
+#include "common.h"
+#include "clk-regmap.h"
+#include "clk-regmap-divider.h"
+#include "clk-alpha-pll.h"
+#include "clk-rcg.h"
+#include "clk-branch.h"
+#include "reset.h"
+#include "gdsc.h"
+
+enum {
+ P_XO,
+ P_GPLL0,
+ P_GPUPLL0_OUT_EVEN,
+};
+
+/* Instead of going directly to the block, XO is routed through this branch */
+static struct clk_branch gpucc_cxo_clk = {
+ .halt_reg = 0x1020,
+ .clkr = {
+ .enable_reg = 0x1020,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gpucc_cxo_clk",
+ .parent_data = &(const struct clk_parent_data){
+ .fw_name = "xo",
+ .name = "xo"
+ },
+ .num_parents = 1,
+ .ops = &clk_branch2_ops,
+ .flags = CLK_IS_CRITICAL,
+ },
+ },
+};
+
+static const struct clk_div_table post_div_table_fabia_even[] = {
+ { 0x0, 1 },
+ { 0x1, 2 },
+ { 0x3, 4 },
+ { 0x7, 8 },
+ { }
+};
+
+static struct clk_alpha_pll gpupll0 = {
+ .offset = 0x0,
+ .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "gpupll0",
+ .parent_hws = (const struct clk_hw *[]){ &gpucc_cxo_clk.clkr.hw },
+ .num_parents = 1,
+ .ops = &clk_alpha_pll_fixed_fabia_ops,
+ },
+};
+
+static struct clk_alpha_pll_postdiv gpupll0_out_even = {
+ .offset = 0x0,
+ .post_div_shift = 8,
+ .post_div_table = post_div_table_fabia_even,
+ .num_post_div = ARRAY_SIZE(post_div_table_fabia_even),
+ .width = 4,
+ .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "gpupll0_out_even",
+ .parent_hws = (const struct clk_hw *[]){ &gpupll0.clkr.hw },
+ .num_parents = 1,
+ .ops = &clk_alpha_pll_postdiv_fabia_ops,
+ },
+};
+
+static const struct parent_map gpu_xo_gpll0_map[] = {
+ { P_XO, 0 },
+ { P_GPLL0, 5 },
+};
+
+static const struct clk_parent_data gpu_xo_gpll0[] = {
+ { .hw = &gpucc_cxo_clk.clkr.hw },
+ { .fw_name = "gpll0", .name = "gpll0" },
+};
+
+static const struct parent_map gpu_xo_gpupll0_map[] = {
+ { P_XO, 0 },
+ { P_GPUPLL0_OUT_EVEN, 1 },
+};
+
+static const struct clk_parent_data gpu_xo_gpupll0[] = {
+ { .hw = &gpucc_cxo_clk.clkr.hw },
+ { .hw = &gpupll0_out_even.clkr.hw },
+};
+
+static const struct freq_tbl ftbl_rbcpr_clk_src[] = {
+ F(19200000, P_XO, 1, 0, 0),
+ F(50000000, P_GPLL0, 12, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 rbcpr_clk_src = {
+ .cmd_rcgr = 0x1030,
+ .hid_width = 5,
+ .parent_map = gpu_xo_gpll0_map,
+ .freq_tbl = ftbl_rbcpr_clk_src,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "rbcpr_clk_src",
+ .parent_data = gpu_xo_gpll0,
+ .num_parents = 2,
+ .ops = &clk_rcg2_ops,
+ },
+};
+
+static const struct freq_tbl ftbl_gfx3d_clk_src[] = {
+ F(180000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ F(257000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ F(342000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ F(414000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ F(515000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ F(596000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ F(670000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ F(710000000, P_GPUPLL0_OUT_EVEN, 2, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 gfx3d_clk_src = {
+ .cmd_rcgr = 0x1070,
+ .hid_width = 5,
+ .parent_map = gpu_xo_gpupll0_map,
+ .freq_tbl = ftbl_gfx3d_clk_src,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "gfx3d_clk_src",
+ .parent_data = gpu_xo_gpupll0,
+ .num_parents = 2,
+ .ops = &clk_rcg2_ops,
+ .flags = CLK_OPS_PARENT_ENABLE,
+ },
+};
+
+static const struct freq_tbl ftbl_rbbmtimer_clk_src[] = {
+ F(19200000, P_XO, 1, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 rbbmtimer_clk_src = {
+ .cmd_rcgr = 0x10b0,
+ .hid_width = 5,
+ .parent_map = gpu_xo_gpll0_map,
+ .freq_tbl = ftbl_rbbmtimer_clk_src,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "rbbmtimer_clk_src",
+ .parent_data = gpu_xo_gpll0,
+ .num_parents = 2,
+ .ops = &clk_rcg2_ops,
+ },
+};
+
+static const struct freq_tbl ftbl_gfx3d_isense_clk_src[] = {
+ F(19200000, P_XO, 1, 0, 0),
+ F(40000000, P_GPLL0, 15, 0, 0),
+ F(200000000, P_GPLL0, 3, 0, 0),
+ F(300000000, P_GPLL0, 2, 0, 0),
+ { }
+};
+
+static struct clk_rcg2 gfx3d_isense_clk_src = {
+ .cmd_rcgr = 0x1100,
+ .hid_width = 5,
+ .parent_map = gpu_xo_gpll0_map,
+ .freq_tbl = ftbl_gfx3d_isense_clk_src,
+ .clkr.hw.init = &(struct clk_init_data){
+ .name = "gfx3d_isense_clk_src",
+ .parent_data = gpu_xo_gpll0,
+ .num_parents = 2,
+ .ops = &clk_rcg2_ops,
+ },
+};
+
+static struct clk_branch rbcpr_clk = {
+ .halt_reg = 0x1054,
+ .clkr = {
+ .enable_reg = 0x1054,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "rbcpr_clk",
+ .parent_hws = (const struct clk_hw *[]){ &rbcpr_clk_src.clkr.hw },
+ .num_parents = 1,
+ .ops = &clk_branch2_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_branch gfx3d_clk = {
+ .halt_reg = 0x1098,
+ .clkr = {
+ .enable_reg = 0x1098,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gfx3d_clk",
+ .parent_hws = (const struct clk_hw *[]){ &gfx3d_clk_src.clkr.hw },
+ .num_parents = 1,
+ .ops = &clk_branch2_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_branch rbbmtimer_clk = {
+ .halt_reg = 0x10d0,
+ .clkr = {
+ .enable_reg = 0x10d0,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "rbbmtimer_clk",
+ .parent_hws = (const struct clk_hw *[]){ &rbbmtimer_clk_src.clkr.hw },
+ .num_parents = 1,
+ .ops = &clk_branch2_ops,
+ .flags = CLK_SET_RATE_PARENT,
+ },
+ },
+};
+
+static struct clk_branch gfx3d_isense_clk = {
+ .halt_reg = 0x1124,
+ .clkr = {
+ .enable_reg = 0x1124,
+ .enable_mask = BIT(0),
+ .hw.init = &(struct clk_init_data){
+ .name = "gfx3d_isense_clk",
+ .parent_hws = (const struct clk_hw *[]){ &gfx3d_isense_clk_src.clkr.hw },
+ .num_parents = 1,
+ .ops = &clk_branch2_ops,
+ },
+ },
+};
+
+static struct gdsc gpu_cx_gdsc = {
+ .gdscr = 0x1004,
+ .pd = {
+ .name = "gpu_cx",
+ },
+ .pwrsts = PWRSTS_OFF_ON,
+};
+
+static struct gdsc gpu_gx_gdsc = {
+ .gdscr = 0x1094,
+ .clamp_io_ctrl = 0x130,
+ .pd = {
+ .name = "gpu_gx",
+ },
+ .parent = &gpu_cx_gdsc.pd,
+ .pwrsts = PWRSTS_OFF_ON,
+ .flags = CLAMP_IO | AON_RESET,
+};
+
+static struct clk_regmap *gpucc_msm8998_clocks[] = {
+ [GPUPLL0] = &gpupll0.clkr,
+ [GPUPLL0_OUT_EVEN] = &gpupll0_out_even.clkr,
+ [RBCPR_CLK_SRC] = &rbcpr_clk_src.clkr,
+ [GFX3D_CLK_SRC] = &gfx3d_clk_src.clkr,
+ [RBBMTIMER_CLK_SRC] = &rbbmtimer_clk_src.clkr,
+ [GFX3D_ISENSE_CLK_SRC] = &gfx3d_isense_clk_src.clkr,
+ [RBCPR_CLK] = &rbcpr_clk.clkr,
+ [GFX3D_CLK] = &gfx3d_clk.clkr,
+ [RBBMTIMER_CLK] = &rbbmtimer_clk.clkr,
+ [GFX3D_ISENSE_CLK] = &gfx3d_isense_clk.clkr,
+ [GPUCC_CXO_CLK] = &gpucc_cxo_clk.clkr,
+};
+
+static struct gdsc *gpucc_msm8998_gdscs[] = {
+ [GPU_CX_GDSC] = &gpu_cx_gdsc,
+ [GPU_GX_GDSC] = &gpu_gx_gdsc,
+};
+
+static const struct qcom_reset_map gpucc_msm8998_resets[] = {
+ [GPU_CX_BCR] = { 0x1000 },
+ [RBCPR_BCR] = { 0x1050 },
+ [GPU_GX_BCR] = { 0x1090 },
+ [GPU_ISENSE_BCR] = { 0x1120 },
+};
+
+static const struct regmap_config gpucc_msm8998_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0x9000,
+ .fast_io = true,
+};
+
+static const struct qcom_cc_desc gpucc_msm8998_desc = {
+ .config = &gpucc_msm8998_regmap_config,
+ .clks = gpucc_msm8998_clocks,
+ .num_clks = ARRAY_SIZE(gpucc_msm8998_clocks),
+ .resets = gpucc_msm8998_resets,
+ .num_resets = ARRAY_SIZE(gpucc_msm8998_resets),
+ .gdscs = gpucc_msm8998_gdscs,
+ .num_gdscs = ARRAY_SIZE(gpucc_msm8998_gdscs),
+};
+
+static const struct of_device_id gpucc_msm8998_match_table[] = {
+ { .compatible = "qcom,gpucc-msm8998" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, gpucc_msm8998_match_table);
+
+static int gpucc_msm8998_probe(struct platform_device *pdev)
+{
+ struct regmap *regmap;
+
+ regmap = qcom_cc_map(pdev, &gpucc_msm8998_desc);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ /* force periph logic on to avoid perf counter corruption */
+ regmap_write_bits(regmap, gfx3d_clk.clkr.enable_reg, BIT(13), BIT(13));
+ /* tweak droop detector (GPUCC_GPU_DD_WRAP_CTRL) to reduce leakage */
+ regmap_write_bits(regmap, gfx3d_clk.clkr.enable_reg, BIT(0), BIT(0));
+
+ return qcom_cc_really_probe(pdev, &gpucc_msm8998_desc, regmap);
+}
+
+static struct platform_driver gpucc_msm8998_driver = {
+ .probe = gpucc_msm8998_probe,
+ .driver = {
+ .name = "gpucc-msm8998",
+ .of_match_table = gpucc_msm8998_match_table,
+ },
+};
+module_platform_driver(gpucc_msm8998_driver);
+
+MODULE_DESCRIPTION("QCOM GPUCC MSM8998 Driver");
+MODULE_LICENSE("GPL v2");
--
2.17.1
next prev parent reply other threads:[~2019-10-02 1:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-02 1:15 [PATCH v4 0/2] MSM8998 GPUCC Support Jeffrey Hugo
2019-10-02 1:16 ` Jeffrey Hugo [this message]
2019-10-17 21:50 ` [PATCH v4 1/2] clk: qcom: Add MSM8998 GPU Clock Controller (GPUCC) driver Stephen Boyd
2019-10-17 23:16 ` Jeffrey Hugo
2019-10-18 21:11 ` Jeffrey Hugo
2019-10-27 21:36 ` Stephen Boyd
2019-10-28 14:17 ` Jeffrey Hugo
2019-10-18 4:11 ` Taniya Das
2019-10-18 14:24 ` Jeffrey Hugo
2019-10-02 1:17 ` [PATCH v4 2/2] arm64: dts: qcom: msm8998: Add gpucc node Jeffrey Hugo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191002011640.36624-1-jeffrey.l.hugo@gmail.com \
--to=jeffrey.l.hugo@gmail.com \
--cc=agross@kernel.org \
--cc=bjorn.andersson@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marc.w.gonzalez@free.fr \
--cc=mturquette@baylibre.com \
--cc=sboyd@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.