linux/drivers/clk/qcom/lpassaudiocc-sc7280.c
Douglas Anderson d470be3c4f clk: qcom: lpass-sc7280: Fix pm_runtime usage
The pm_runtime usage in lpass-sc7280 was broken in quite a few
ways. Specifically:

1. At the end of probe it called "put" twice. This is a no-no and will
   end us up with a negative usage count. Even worse than calling
   "put" twice, it never called "get" once. Thus after bootup it could
   be seen that the runtime usage of the devices managed by this
   driver was -2.
2. In some error cases it manually called pm_runtime_disable() even
   though it had previously used devm_add_action_or_reset() to set
   this up to be called automatically. This meant that in these error
   cases we'd double-call pm_runtime_disable().
3. It forgot to call undo pm_runtime_use_autosuspend(), which can
   sometimes have subtle problems (and the docs specifically mention
   that you need to undo this function).

Overall the above seriously calls into question how this driver is
working. It seems like a combination of "it doesn't", "by luck", and
"because of the weirdness of runtime_pm". Specifically I put a
printout to the serial console every time the runtime suspend/resume
was called for the two devices created by this driver (I wrapped the
pm_clk calls). When I had serial console enabled, I found that the
calls got resumed at bootup (when the clk core probed and before our
double-put) and then never touched again. That's no good.
  [    0.829997] DOUG: my_pm_clk_resume, usage=1
  [    0.835487] DOUG: my_pm_clk_resume, usage=1

When I disabled serial console (speeding up boot), I got a different
pattern, which I guess (?) is better:
  [    0.089767] DOUG: my_pm_clk_resume, usage=1
  [    0.090507] DOUG: my_pm_clk_resume, usage=1
  [    0.151885] DOUG: my_pm_clk_suspend, usage=-2
  [    0.151914] DOUG: my_pm_clk_suspend, usage=-2
  [    1.825747] DOUG: my_pm_clk_resume, usage=-1
  [    1.825774] DOUG: my_pm_clk_resume, usage=-1
  [    1.888269] DOUG: my_pm_clk_suspend, usage=-2
  [    1.888282] DOUG: my_pm_clk_suspend, usage=-2

These different patterns have to do with the fact that the core PM
Runtime code really isn't designed to be robust to negative usage
counts and sometimes may happen to stumble upon a behavior that
happens to "work". For instance, you can see that
__pm_runtime_suspend() will treat any non-zero value (including
negative numbers) as if the device is in use.

In any case, let's fix the driver to be correct. We'll hold a
pm_runtime reference for the whole probe and then drop it (once!) at
the end. We'll get rid of manual pm_runtime_disable() calls in the
error handling. We'll also switch to devm_pm_runtime_enable(), which
magically handles undoing pm_runtime_use_autosuspend() as of commit
b4060db925 ("PM: runtime: Have devm_pm_runtime_enable() handle
pm_runtime_dont_use_autosuspend()").

While we're at this, let's also use devm_pm_clk_create() instead of
rolling it ourselves.

Note that the above changes make it obvious that
lpassaudio_create_pm_clks() was doing more than just creating
clocks. It was also setting up pm_runtime parameters. Let's rename it.

All of these problems were found by code inspection. I started looking
at this driver because it was involved in a deadlock that I reported a
while ago [1]. Though I bisected the deadlock to commit 1b771839de
("clk: qcom: gdsc: enable optional power domain support"), it was
never really clear why that patch affected it other than a luck of
timing changes. I'll also note that by fixing the timing (as done in
this change) we also seem to aboid the deadlock, which is a nice
benefit.

Also note that some of the fixes here are much the same type of stuff
that Dmitry did in commit 72cfc73f46 ("clk: qcom: use
devm_pm_runtime_enable and devm_pm_clk_create"), but I guess
lpassaudiocc-sc7280.c didn't exist then.

[1] https://lore.kernel.org/r/20220922154354.2486595-1-dianders@chromium.org

Fixes: a9dd26639d ("clk: qcom: lpass: Add support for LPASS clock controller for SC7280")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221104064055.1.I00a0e4564a25489e85328ec41636497775627564@changeid
2022-12-01 17:26:13 -06:00

890 lines
25 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2021, The Linux Foundation. All rights reserved.
*/
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/pm_clock.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,lpass-sc7280.h>
#include <dt-bindings/clock/qcom,lpassaudiocc-sc7280.h>
#include "clk-alpha-pll.h"
#include "clk-branch.h"
#include "clk-rcg.h"
#include "clk-regmap.h"
#include "clk-regmap-divider.h"
#include "clk-regmap-mux.h"
#include "common.h"
#include "gdsc.h"
#include "reset.h"
enum {
P_BI_TCXO,
P_LPASS_AON_CC_PLL_OUT_EVEN,
P_LPASS_AON_CC_PLL_OUT_MAIN,
P_LPASS_AON_CC_PLL_OUT_MAIN_CDIV_DIV_CLK_SRC,
P_LPASS_AON_CC_PLL_OUT_ODD,
P_LPASS_AUDIO_CC_PLL_OUT_AUX,
P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC,
P_LPASS_AUDIO_CC_PLL_MAIN_DIV_CLK,
};
static const struct pll_vco zonda_vco[] = {
{ 595200000UL, 3600000000UL, 0 },
};
static struct clk_branch lpass_q6ss_ahbm_clk = {
.halt_reg = 0x901c,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x901c,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_q6ss_ahbm_clk",
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_q6ss_ahbs_clk = {
.halt_reg = 0x9020,
.halt_check = BRANCH_HALT_VOTED,
.clkr = {
.enable_reg = 0x9020,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "lpass_q6ss_ahbs_clk",
.ops = &clk_branch2_ops,
},
},
};
/* 1128.96MHz configuration */
static const struct alpha_pll_config lpass_audio_cc_pll_config = {
.l = 0x3a,
.alpha = 0xcccc,
.config_ctl_val = 0x08200920,
.config_ctl_hi_val = 0x05002001,
.config_ctl_hi1_val = 0x00000000,
.user_ctl_val = 0x03000101,
};
static struct clk_alpha_pll lpass_audio_cc_pll = {
.offset = 0x0,
.vco_table = zonda_vco,
.num_vco = ARRAY_SIZE(zonda_vco),
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_ZONDA],
.clkr = {
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_pll",
.parent_data = &(const struct clk_parent_data){
.index = 0,
},
.num_parents = 1,
.ops = &clk_alpha_pll_zonda_ops,
},
},
};
static const struct clk_div_table post_div_table_lpass_audio_cc_pll_out_aux2[] = {
{ 0x1, 2 },
{ }
};
static struct clk_alpha_pll_postdiv lpass_audio_cc_pll_out_aux2 = {
.offset = 0x0,
.post_div_shift = 8,
.post_div_table = post_div_table_lpass_audio_cc_pll_out_aux2,
.num_post_div = ARRAY_SIZE(post_div_table_lpass_audio_cc_pll_out_aux2),
.width = 2,
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_ZONDA],
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_pll_out_aux2",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_pll.clkr.hw,
},
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_zonda_ops,
},
};
static const struct pll_vco lucid_vco[] = {
{ 249600000, 2000000000, 0 },
};
/* 614.4 MHz configuration */
static const struct alpha_pll_config lpass_aon_cc_pll_config = {
.l = 0x20,
.alpha = 0x0,
.config_ctl_val = 0x20485699,
.config_ctl_hi_val = 0x00002261,
.config_ctl_hi1_val = 0x329A299C,
.user_ctl_val = 0x00005100,
.user_ctl_hi_val = 0x00000805,
.user_ctl_hi1_val = 0x00000000,
};
static struct clk_alpha_pll lpass_aon_cc_pll = {
.offset = 0x0,
.vco_table = lucid_vco,
.num_vco = ARRAY_SIZE(lucid_vco),
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
.clkr = {
.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_pll",
.parent_data = &(const struct clk_parent_data){
.index = 0,
},
.num_parents = 1,
.ops = &clk_alpha_pll_lucid_ops,
},
},
};
static const struct clk_div_table post_div_table_lpass_aon_cc_pll_out_even[] = {
{ 0x1, 2 },
{ }
};
static struct clk_alpha_pll_postdiv lpass_aon_cc_pll_out_even = {
.offset = 0x0,
.post_div_shift = 8,
.post_div_table = post_div_table_lpass_aon_cc_pll_out_even,
.num_post_div = ARRAY_SIZE(post_div_table_lpass_aon_cc_pll_out_even),
.width = 4,
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_pll_out_even",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_pll.clkr.hw,
},
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_lucid_ops,
},
};
static const struct clk_div_table post_div_table_lpass_aon_cc_pll_out_odd[] = {
{ 0x5, 5 },
{ }
};
static struct clk_alpha_pll_postdiv lpass_aon_cc_pll_out_odd = {
.offset = 0x0,
.post_div_shift = 12,
.post_div_table = post_div_table_lpass_aon_cc_pll_out_odd,
.num_post_div = ARRAY_SIZE(post_div_table_lpass_aon_cc_pll_out_odd),
.width = 4,
.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_pll_out_odd",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_pll.clkr.hw,
},
.num_parents = 1,
.ops = &clk_alpha_pll_postdiv_lucid_ops,
},
};
static const struct parent_map lpass_audio_cc_parent_map_0[] = {
{ P_BI_TCXO, 0 },
{ P_LPASS_AUDIO_CC_PLL_OUT_AUX, 3 },
{ P_LPASS_AON_CC_PLL_OUT_ODD, 5 },
{ P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 6 },
};
static struct clk_regmap_div lpass_audio_cc_pll_out_aux2_div_clk_src;
static struct clk_regmap_div lpass_audio_cc_pll_out_main_div_clk_src;
static const struct clk_parent_data lpass_audio_cc_parent_data_0[] = {
{ .index = 0 },
{ .hw = &lpass_audio_cc_pll.clkr.hw },
{ .hw = &lpass_aon_cc_pll_out_odd.clkr.hw },
{ .hw = &lpass_audio_cc_pll_out_aux2_div_clk_src.clkr.hw },
};
static const struct parent_map lpass_aon_cc_parent_map_0[] = {
{ P_BI_TCXO, 0 },
{ P_LPASS_AON_CC_PLL_OUT_EVEN, 4 },
};
static const struct clk_parent_data lpass_aon_cc_parent_data_0[] = {
{ .index = 0 },
{ .hw = &lpass_aon_cc_pll_out_even.clkr.hw },
};
static const struct parent_map lpass_aon_cc_parent_map_1[] = {
{ P_BI_TCXO, 0 },
{ P_LPASS_AON_CC_PLL_OUT_ODD, 1 },
{ P_LPASS_AUDIO_CC_PLL_MAIN_DIV_CLK, 6 },
};
static const struct clk_parent_data lpass_aon_cc_parent_data_1[] = {
{ .index = 0 },
{ .hw = &lpass_aon_cc_pll_out_odd.clkr.hw },
{ .hw = &lpass_audio_cc_pll_out_main_div_clk_src.clkr.hw },
};
static const struct freq_tbl ftbl_lpass_aon_cc_main_rcg_clk_src[] = {
F(38400000, P_LPASS_AON_CC_PLL_OUT_EVEN, 8, 0, 0),
F(76800000, P_LPASS_AON_CC_PLL_OUT_EVEN, 4, 0, 0),
F(153600000, P_LPASS_AON_CC_PLL_OUT_EVEN, 2, 0, 0),
{ }
};
static struct clk_rcg2 lpass_aon_cc_main_rcg_clk_src = {
.cmd_rcgr = 0x1000,
.mnd_width = 0,
.hid_width = 5,
.parent_map = lpass_aon_cc_parent_map_0,
.freq_tbl = ftbl_lpass_aon_cc_main_rcg_clk_src,
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_main_rcg_clk_src",
.parent_data = lpass_aon_cc_parent_data_0,
.num_parents = ARRAY_SIZE(lpass_aon_cc_parent_data_0),
.flags = CLK_OPS_PARENT_ENABLE,
.ops = &clk_rcg2_shared_ops,
},
};
static const struct freq_tbl ftbl_lpass_aon_cc_tx_mclk_rcg_clk_src[] = {
F(19200000, P_BI_TCXO, 1, 0, 0),
F(24576000, P_LPASS_AON_CC_PLL_OUT_ODD, 5, 0, 0),
{ }
};
static struct clk_rcg2 lpass_aon_cc_tx_mclk_rcg_clk_src = {
.cmd_rcgr = 0x13004,
.mnd_width = 0,
.hid_width = 5,
.parent_map = lpass_aon_cc_parent_map_1,
.freq_tbl = ftbl_lpass_aon_cc_tx_mclk_rcg_clk_src,
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_tx_mclk_rcg_clk_src",
.parent_data = lpass_aon_cc_parent_data_1,
.num_parents = ARRAY_SIZE(lpass_aon_cc_parent_data_1),
.ops = &clk_rcg2_ops,
},
};
static struct clk_regmap_div lpass_audio_cc_pll_out_aux2_div_clk_src = {
.reg = 0x48,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "lpass_audio_cc_pll_out_aux2_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_pll_out_aux2.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_regmap_div lpass_audio_cc_pll_out_main_div_clk_src = {
.reg = 0x3c,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "lpass_audio_cc_pll_out_main_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_pll.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_regmap_div lpass_aon_cc_cdiv_tx_mclk_div_clk_src = {
.reg = 0x13010,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "lpass_aon_cc_cdiv_tx_mclk_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_tx_mclk_rcg_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_regmap_div lpass_aon_cc_pll_out_main_cdiv_div_clk_src = {
.reg = 0x80,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "lpass_aon_cc_pll_out_main_cdiv_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_pll.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static const struct freq_tbl ftbl_lpass_audio_cc_ext_mclk0_clk_src[] = {
F(256000, P_LPASS_AON_CC_PLL_OUT_ODD, 15, 1, 32),
F(352800, P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 10, 1, 32),
F(512000, P_LPASS_AON_CC_PLL_OUT_ODD, 15, 1, 16),
F(705600, P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 10, 1, 16),
F(768000, P_LPASS_AON_CC_PLL_OUT_ODD, 10, 1, 16),
F(1024000, P_LPASS_AON_CC_PLL_OUT_ODD, 15, 1, 8),
F(1411200, P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 10, 1, 8),
F(1536000, P_LPASS_AON_CC_PLL_OUT_ODD, 10, 1, 8),
F(2048000, P_LPASS_AON_CC_PLL_OUT_ODD, 15, 1, 4),
F(2822400, P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 10, 1, 4),
F(3072000, P_LPASS_AON_CC_PLL_OUT_ODD, 10, 1, 4),
F(4096000, P_LPASS_AON_CC_PLL_OUT_ODD, 15, 1, 2),
F(5644800, P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 10, 1, 2),
F(6144000, P_LPASS_AON_CC_PLL_OUT_ODD, 10, 1, 2),
F(8192000, P_LPASS_AON_CC_PLL_OUT_ODD, 15, 0, 0),
F(9600000, P_BI_TCXO, 2, 0, 0),
F(11289600, P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 10, 0, 0),
F(12288000, P_LPASS_AON_CC_PLL_OUT_ODD, 10, 0, 0),
F(19200000, P_BI_TCXO, 1, 0, 0),
F(22579200, P_LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC, 5, 0, 0),
F(24576000, P_LPASS_AON_CC_PLL_OUT_ODD, 5, 0, 0),
{ }
};
static struct clk_rcg2 lpass_audio_cc_ext_mclk0_clk_src = {
.cmd_rcgr = 0x20004,
.mnd_width = 8,
.hid_width = 5,
.parent_map = lpass_audio_cc_parent_map_0,
.freq_tbl = ftbl_lpass_audio_cc_ext_mclk0_clk_src,
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_ext_mclk0_clk_src",
.parent_data = lpass_audio_cc_parent_data_0,
.num_parents = ARRAY_SIZE(lpass_audio_cc_parent_data_0),
.ops = &clk_rcg2_ops,
},
};
static struct clk_rcg2 lpass_audio_cc_ext_mclk1_clk_src = {
.cmd_rcgr = 0x21004,
.mnd_width = 8,
.hid_width = 5,
.parent_map = lpass_audio_cc_parent_map_0,
.freq_tbl = ftbl_lpass_audio_cc_ext_mclk0_clk_src,
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_ext_mclk1_clk_src",
.parent_data = lpass_audio_cc_parent_data_0,
.num_parents = ARRAY_SIZE(lpass_audio_cc_parent_data_0),
.ops = &clk_rcg2_ops,
},
};
static struct clk_rcg2 lpass_audio_cc_rx_mclk_clk_src = {
.cmd_rcgr = 0x24004,
.mnd_width = 8,
.hid_width = 5,
.parent_map = lpass_audio_cc_parent_map_0,
.freq_tbl = ftbl_lpass_audio_cc_ext_mclk0_clk_src,
.clkr.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_rx_mclk_clk_src",
.parent_data = lpass_audio_cc_parent_data_0,
.num_parents = ARRAY_SIZE(lpass_audio_cc_parent_data_0),
.ops = &clk_rcg2_ops,
},
};
static struct clk_regmap_div lpass_audio_cc_cdiv_rx_mclk_div_clk_src = {
.reg = 0x240d0,
.shift = 0,
.width = 4,
.clkr.hw.init = &(const struct clk_init_data) {
.name = "lpass_audio_cc_cdiv_rx_mclk_div_clk_src",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_rx_mclk_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_regmap_div_ro_ops,
},
};
static struct clk_branch lpass_aon_cc_audio_hm_h_clk;
static struct clk_branch lpass_audio_cc_codec_mem0_clk = {
.halt_reg = 0x1e004,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x1e004,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_codec_mem0_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_audio_hm_h_clk.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_cc_codec_mem1_clk = {
.halt_reg = 0x1e008,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x1e008,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_codec_mem1_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_audio_hm_h_clk.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_cc_codec_mem2_clk = {
.halt_reg = 0x1e00c,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x1e00c,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_codec_mem2_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_audio_hm_h_clk.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_cc_codec_mem_clk = {
.halt_reg = 0x1e000,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x1e000,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_codec_mem_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_audio_hm_h_clk.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_cc_ext_mclk0_clk = {
.halt_reg = 0x20018,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x20018,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_ext_mclk0_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_ext_mclk0_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_cc_ext_mclk1_clk = {
.halt_reg = 0x21018,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x21018,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_ext_mclk1_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_ext_mclk1_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_cc_rx_mclk_2x_clk = {
.halt_reg = 0x240cc,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x240cc,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_rx_mclk_2x_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_rx_mclk_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_audio_cc_rx_mclk_clk = {
.halt_reg = 0x240d4,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x240d4,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_audio_cc_rx_mclk_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_audio_cc_cdiv_rx_mclk_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_aon_cc_audio_hm_h_clk = {
.halt_reg = 0x9014,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x9014,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_audio_hm_h_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_main_rcg_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_aon_ops,
},
},
};
static struct clk_branch lpass_aon_cc_va_mem0_clk = {
.halt_reg = 0x9028,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x9028,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_va_mem0_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_main_rcg_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_aon_cc_tx_mclk_2x_clk = {
.halt_reg = 0x1300c,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x1300c,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_tx_mclk_2x_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_tx_mclk_rcg_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct clk_branch lpass_aon_cc_tx_mclk_clk = {
.halt_reg = 0x13014,
.halt_check = BRANCH_HALT,
.clkr = {
.enable_reg = 0x13014,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data){
.name = "lpass_aon_cc_tx_mclk_clk",
.parent_hws = (const struct clk_hw*[]){
&lpass_aon_cc_cdiv_tx_mclk_div_clk_src.clkr.hw,
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
.ops = &clk_branch2_ops,
},
},
};
static struct gdsc lpass_aon_cc_lpass_audio_hm_gdsc = {
.gdscr = 0x9090,
.pd = {
.name = "lpass_aon_cc_lpass_audio_hm_gdsc",
},
.pwrsts = PWRSTS_OFF_ON,
.flags = RETAIN_FF_ENABLE,
};
static struct clk_regmap *lpass_cc_sc7280_clocks[] = {
[LPASS_Q6SS_AHBM_CLK] = &lpass_q6ss_ahbm_clk.clkr,
[LPASS_Q6SS_AHBS_CLK] = &lpass_q6ss_ahbs_clk.clkr,
};
static struct clk_regmap *lpass_aon_cc_sc7280_clocks[] = {
[LPASS_AON_CC_AUDIO_HM_H_CLK] = &lpass_aon_cc_audio_hm_h_clk.clkr,
[LPASS_AON_CC_VA_MEM0_CLK] = &lpass_aon_cc_va_mem0_clk.clkr,
[LPASS_AON_CC_CDIV_TX_MCLK_DIV_CLK_SRC] = &lpass_aon_cc_cdiv_tx_mclk_div_clk_src.clkr,
[LPASS_AON_CC_MAIN_RCG_CLK_SRC] = &lpass_aon_cc_main_rcg_clk_src.clkr,
[LPASS_AON_CC_PLL] = &lpass_aon_cc_pll.clkr,
[LPASS_AON_CC_PLL_OUT_EVEN] = &lpass_aon_cc_pll_out_even.clkr,
[LPASS_AON_CC_PLL_OUT_MAIN_CDIV_DIV_CLK_SRC] =
&lpass_aon_cc_pll_out_main_cdiv_div_clk_src.clkr,
[LPASS_AON_CC_PLL_OUT_ODD] = &lpass_aon_cc_pll_out_odd.clkr,
[LPASS_AON_CC_TX_MCLK_2X_CLK] = &lpass_aon_cc_tx_mclk_2x_clk.clkr,
[LPASS_AON_CC_TX_MCLK_CLK] = &lpass_aon_cc_tx_mclk_clk.clkr,
[LPASS_AON_CC_TX_MCLK_RCG_CLK_SRC] = &lpass_aon_cc_tx_mclk_rcg_clk_src.clkr,
};
static struct gdsc *lpass_aon_cc_sc7280_gdscs[] = {
[LPASS_AON_CC_LPASS_AUDIO_HM_GDSC] = &lpass_aon_cc_lpass_audio_hm_gdsc,
};
static struct clk_regmap *lpass_audio_cc_sc7280_clocks[] = {
[LPASS_AUDIO_CC_CDIV_RX_MCLK_DIV_CLK_SRC] = &lpass_audio_cc_cdiv_rx_mclk_div_clk_src.clkr,
[LPASS_AUDIO_CC_CODEC_MEM0_CLK] = &lpass_audio_cc_codec_mem0_clk.clkr,
[LPASS_AUDIO_CC_CODEC_MEM1_CLK] = &lpass_audio_cc_codec_mem1_clk.clkr,
[LPASS_AUDIO_CC_CODEC_MEM2_CLK] = &lpass_audio_cc_codec_mem2_clk.clkr,
[LPASS_AUDIO_CC_CODEC_MEM_CLK] = &lpass_audio_cc_codec_mem_clk.clkr,
[LPASS_AUDIO_CC_EXT_MCLK0_CLK] = &lpass_audio_cc_ext_mclk0_clk.clkr,
[LPASS_AUDIO_CC_EXT_MCLK0_CLK_SRC] = &lpass_audio_cc_ext_mclk0_clk_src.clkr,
[LPASS_AUDIO_CC_EXT_MCLK1_CLK] = &lpass_audio_cc_ext_mclk1_clk.clkr,
[LPASS_AUDIO_CC_EXT_MCLK1_CLK_SRC] = &lpass_audio_cc_ext_mclk1_clk_src.clkr,
[LPASS_AUDIO_CC_PLL] = &lpass_audio_cc_pll.clkr,
[LPASS_AUDIO_CC_PLL_OUT_AUX2] = &lpass_audio_cc_pll_out_aux2.clkr,
[LPASS_AUDIO_CC_PLL_OUT_AUX2_DIV_CLK_SRC] = &lpass_audio_cc_pll_out_aux2_div_clk_src.clkr,
[LPASS_AUDIO_CC_PLL_OUT_MAIN_DIV_CLK_SRC] = &lpass_audio_cc_pll_out_main_div_clk_src.clkr,
[LPASS_AUDIO_CC_RX_MCLK_2X_CLK] = &lpass_audio_cc_rx_mclk_2x_clk.clkr,
[LPASS_AUDIO_CC_RX_MCLK_CLK] = &lpass_audio_cc_rx_mclk_clk.clkr,
[LPASS_AUDIO_CC_RX_MCLK_CLK_SRC] = &lpass_audio_cc_rx_mclk_clk_src.clkr,
};
static struct regmap_config lpass_audio_cc_sc7280_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
};
static const struct qcom_cc_desc lpass_cc_sc7280_desc = {
.config = &lpass_audio_cc_sc7280_regmap_config,
.clks = lpass_cc_sc7280_clocks,
.num_clks = ARRAY_SIZE(lpass_cc_sc7280_clocks),
};
static const struct qcom_cc_desc lpass_audio_cc_sc7280_desc = {
.config = &lpass_audio_cc_sc7280_regmap_config,
.clks = lpass_audio_cc_sc7280_clocks,
.num_clks = ARRAY_SIZE(lpass_audio_cc_sc7280_clocks),
};
static const struct qcom_reset_map lpass_audio_cc_sc7280_resets[] = {
[LPASS_AUDIO_SWR_RX_CGCR] = { 0xa0, 1 },
[LPASS_AUDIO_SWR_TX_CGCR] = { 0xa8, 1 },
[LPASS_AUDIO_SWR_WSA_CGCR] = { 0xb0, 1 },
};
static const struct qcom_cc_desc lpass_audio_cc_reset_sc7280_desc = {
.config = &lpass_audio_cc_sc7280_regmap_config,
.resets = lpass_audio_cc_sc7280_resets,
.num_resets = ARRAY_SIZE(lpass_audio_cc_sc7280_resets),
};
static const struct of_device_id lpass_audio_cc_sc7280_match_table[] = {
{ .compatible = "qcom,sc7280-lpassaudiocc" },
{ }
};
MODULE_DEVICE_TABLE(of, lpass_audio_cc_sc7280_match_table);
static int lpass_audio_setup_runtime_pm(struct platform_device *pdev)
{
int ret;
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
ret = devm_pm_runtime_enable(&pdev->dev);
if (ret)
return ret;
ret = devm_pm_clk_create(&pdev->dev);
if (ret)
return ret;
ret = pm_clk_add(&pdev->dev, "iface");
if (ret < 0)
dev_err(&pdev->dev, "failed to acquire iface clock\n");
return pm_runtime_resume_and_get(&pdev->dev);
}
static int lpass_audio_cc_sc7280_probe(struct platform_device *pdev)
{
const struct qcom_cc_desc *desc;
struct regmap *regmap;
int ret;
ret = lpass_audio_setup_runtime_pm(pdev);
if (ret)
return ret;
lpass_audio_cc_sc7280_regmap_config.name = "lpassaudio_cc";
lpass_audio_cc_sc7280_regmap_config.max_register = 0x2f000;
desc = &lpass_audio_cc_sc7280_desc;
regmap = qcom_cc_map(pdev, desc);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
goto exit;
}
clk_zonda_pll_configure(&lpass_audio_cc_pll, regmap, &lpass_audio_cc_pll_config);
/* PLL settings */
regmap_write(regmap, 0x4, 0x3b);
regmap_write(regmap, 0x8, 0xff05);
ret = qcom_cc_really_probe(pdev, &lpass_audio_cc_sc7280_desc, regmap);
if (ret) {
dev_err(&pdev->dev, "Failed to register LPASS AUDIO CC clocks\n");
goto exit;
}
ret = qcom_cc_probe_by_index(pdev, 1, &lpass_audio_cc_reset_sc7280_desc);
if (ret) {
dev_err(&pdev->dev, "Failed to register LPASS AUDIO CC Resets\n");
goto exit;
}
pm_runtime_mark_last_busy(&pdev->dev);
exit:
pm_runtime_put_autosuspend(&pdev->dev);
return ret;
}
static const struct dev_pm_ops lpass_audio_cc_pm_ops = {
SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL)
};
static struct platform_driver lpass_audio_cc_sc7280_driver = {
.probe = lpass_audio_cc_sc7280_probe,
.driver = {
.name = "lpass_audio_cc-sc7280",
.of_match_table = lpass_audio_cc_sc7280_match_table,
.pm = &lpass_audio_cc_pm_ops,
},
};
static const struct qcom_cc_desc lpass_aon_cc_sc7280_desc = {
.config = &lpass_audio_cc_sc7280_regmap_config,
.clks = lpass_aon_cc_sc7280_clocks,
.num_clks = ARRAY_SIZE(lpass_aon_cc_sc7280_clocks),
.gdscs = lpass_aon_cc_sc7280_gdscs,
.num_gdscs = ARRAY_SIZE(lpass_aon_cc_sc7280_gdscs),
};
static const struct of_device_id lpass_aon_cc_sc7280_match_table[] = {
{ .compatible = "qcom,sc7280-lpassaoncc" },
{ }
};
MODULE_DEVICE_TABLE(of, lpass_aon_cc_sc7280_match_table);
static int lpass_aon_cc_sc7280_probe(struct platform_device *pdev)
{
const struct qcom_cc_desc *desc;
struct regmap *regmap;
int ret;
ret = lpass_audio_setup_runtime_pm(pdev);
if (ret)
return ret;
if (of_property_read_bool(pdev->dev.of_node, "qcom,adsp-pil-mode")) {
lpass_audio_cc_sc7280_regmap_config.name = "cc";
desc = &lpass_cc_sc7280_desc;
ret = qcom_cc_probe(pdev, desc);
goto exit;
}
lpass_audio_cc_sc7280_regmap_config.name = "lpasscc_aon";
lpass_audio_cc_sc7280_regmap_config.max_register = 0xa0008;
desc = &lpass_aon_cc_sc7280_desc;
regmap = qcom_cc_map(pdev, desc);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
goto exit;
}
clk_lucid_pll_configure(&lpass_aon_cc_pll, regmap, &lpass_aon_cc_pll_config);
ret = qcom_cc_really_probe(pdev, &lpass_aon_cc_sc7280_desc, regmap);
if (ret) {
dev_err(&pdev->dev, "Failed to register LPASS AON CC clocks\n");
goto exit;
}
pm_runtime_mark_last_busy(&pdev->dev);
exit:
pm_runtime_put_autosuspend(&pdev->dev);
return ret;
}
static struct platform_driver lpass_aon_cc_sc7280_driver = {
.probe = lpass_aon_cc_sc7280_probe,
.driver = {
.name = "lpass_aon_cc-sc7280",
.of_match_table = lpass_aon_cc_sc7280_match_table,
.pm = &lpass_audio_cc_pm_ops,
},
};
static int __init lpass_audio_cc_sc7280_init(void)
{
int ret;
ret = platform_driver_register(&lpass_aon_cc_sc7280_driver);
if (ret)
return ret;
return platform_driver_register(&lpass_audio_cc_sc7280_driver);
}
subsys_initcall(lpass_audio_cc_sc7280_init);
static void __exit lpass_audio_cc_sc7280_exit(void)
{
platform_driver_unregister(&lpass_audio_cc_sc7280_driver);
platform_driver_unregister(&lpass_aon_cc_sc7280_driver);
}
module_exit(lpass_audio_cc_sc7280_exit);
MODULE_DESCRIPTION("QTI LPASS_AUDIO_CC SC7280 Driver");
MODULE_LICENSE("GPL v2");