Re: [PATCH 04/25] clk: meson: a1: add the audio clock controller driver

From: Jan Dakinevich
Date: Mon Mar 18 2024 - 21:48:46 EST

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Let's start from the end:

> No - Looks to me you just have two clock controllers you are trying
force into one.

> Again, this shows 2 devices. The one related to your 'map0' should
request AUD2_CLKID_AUDIOTOP as input and enable it right away.

Most of fishy workarounds that you commented is caused the fact the mmio
of this clock controller is divided into two parts. Compare it with
axg-audio driver, things that was part of contigous memory region (like
pdm) here are moved to second region. Is this enough to make a guess
that these are two devices?

Concerning AUD2_CLKID_AUDIOTOP clock, as it turned out, it must be
enabled before enabling of clocks from second region too. That is
AUD2_CLKID_AUDIOTOP clock feeds both parts of this clock controller.

On 3/15/24 12:20, Jerome Brunet wrote:
>
> On Fri 15 Mar 2024 at 02:21, Jan Dakinevich <jan.dakinevich@xxxxxxxxxxxxxxxxx> wrote:
>
>> This controller provides clocks and reset functionality for audio
>> peripherals on Amlogic A1 SoC family.
>>
>> The driver is almost identical to 'axg-audio', however it would be better
>> to keep it separate due to following reasons:
>>
>> - significant amount of bits has another definition. I will bring there
>> a mess of new defines with A1_ suffixes.
>>
>> - registers of this controller are located in two separate regions. It
>> will give a lot of complications for 'axg-audio' to support this.
>>
>> Signed-off-by: Jan Dakinevich <jan.dakinevich@xxxxxxxxxxxxxxxxx>
>> ---
>> drivers/clk/meson/Kconfig | 13 +
>> drivers/clk/meson/Makefile | 1 +
>> drivers/clk/meson/a1-audio.c | 556 +++++++++++++++++++++++++++++++++++
>> drivers/clk/meson/a1-audio.h | 58 ++++
>> 4 files changed, 628 insertions(+)
>> create mode 100644 drivers/clk/meson/a1-audio.c
>> create mode 100644 drivers/clk/meson/a1-audio.h
>>
>> diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig
>> index d6a2fa5f7e88..80c4a18c83d2 100644
>> --- a/drivers/clk/meson/Kconfig
>> +++ b/drivers/clk/meson/Kconfig
>> @@ -133,6 +133,19 @@ config COMMON_CLK_A1_PERIPHERALS
>> device, A1 SoC Family. Say Y if you want A1 Peripherals clock
>> controller to work.
>>
>> +config COMMON_CLK_A1_AUDIO
>> + tristate "Amlogic A1 SoC Audio clock controller support"
>> + depends on ARM64
>> + select COMMON_CLK_MESON_REGMAP
>> + select COMMON_CLK_MESON_CLKC_UTILS
>> + select COMMON_CLK_MESON_PHASE
>> + select COMMON_CLK_MESON_SCLK_DIV
>> + select COMMON_CLK_MESON_AUDIO_RSTC
>> + help
>> + Support for the Audio clock controller on Amlogic A113L based
>> + device, A1 SoC Family. Say Y if you want A1 Audio clock controller
>> + to work.
>> +
>> config COMMON_CLK_G12A
>> tristate "G12 and SM1 SoC clock controllers support"
>> depends on ARM64
>> diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile
>> index 88d94921a4dc..4968fc7ad555 100644
>> --- a/drivers/clk/meson/Makefile
>> +++ b/drivers/clk/meson/Makefile
>> @@ -20,6 +20,7 @@ obj-$(CONFIG_COMMON_CLK_AXG) += axg.o axg-aoclk.o
>> obj-$(CONFIG_COMMON_CLK_AXG_AUDIO) += axg-audio.o
>> obj-$(CONFIG_COMMON_CLK_A1_PLL) += a1-pll.o
>> obj-$(CONFIG_COMMON_CLK_A1_PERIPHERALS) += a1-peripherals.o
>> +obj-$(CONFIG_COMMON_CLK_A1_AUDIO) += a1-audio.o
>> obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o
>> obj-$(CONFIG_COMMON_CLK_G12A) += g12a.o g12a-aoclk.o
>> obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o meson8-ddr.o
>> diff --git a/drivers/clk/meson/a1-audio.c b/drivers/clk/meson/a1-audio.c
>> new file mode 100644
>> index 000000000000..6039116c93ba
>> --- /dev/null
>> +++ b/drivers/clk/meson/a1-audio.c
>> @@ -0,0 +1,556 @@
>> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
>> +/*
>> + * Copyright (c) 2024, SaluteDevices. All Rights Reserved.
>> + *
>> + * Author: Jan Dakinevich <jan.dakinevich@xxxxxxxxxxxxxxxxx>
>> + */
>> +
>> +#include <linux/clk.h>
>> +#include <linux/clk-provider.h>
>> +#include <linux/init.h>
>> +#include <linux/of_device.h>
>> +#include <linux/module.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/regmap.h>
>> +#include <linux/reset.h>
>> +#include <linux/reset-controller.h>
>> +#include <linux/slab.h>
>> +
>> +#include "meson-clkc-utils.h"
>> +#include "meson-audio-rstc.h"
>> +#include "clk-regmap.h"
>> +#include "clk-phase.h"
>> +#include "sclk-div.h"
>> +#include "a1-audio.h"
>> +
>> +#define AUDIO_PDATA(_name) \
>> + ((const struct clk_parent_data[]) { { .hw = &(_name).hw } })
>
> Not a fan - yet another level of macro.
>
>> +
>> +#define AUDIO_MUX(_name, _reg, _mask, _shift, _pdata) \
>> +static struct clk_regmap _name = { \
>> + .map = AUDIO_REG_MAP(_reg), \
>> + .data = &(struct clk_regmap_mux_data){ \
>> + .offset = AUDIO_REG_OFFSET(_reg), \
>> + .mask = (_mask), \
>> + .shift = (_shift), \
>> + }, \
>> + .hw.init = &(struct clk_init_data) { \
>> + .name = #_name, \
>> + .ops = &clk_regmap_mux_ops, \
>> + .parent_data = (_pdata), \
>> + .num_parents = ARRAY_SIZE(_pdata), \
>> + .flags = CLK_SET_RATE_PARENT, \
>> + }, \
>> +}
>> +
>> +#define AUDIO_DIV(_name, _reg, _shift, _width, _pdata) \
>> +static struct clk_regmap _name = { \
>> + .map = AUDIO_REG_MAP(_reg), \
>> + .data = &(struct clk_regmap_div_data){ \
>> + .offset = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_shift), \
>> + .width = (_width), \
>> + }, \
>> + .hw.init = &(struct clk_init_data) { \
>> + .name = #_name, \
>> + .ops = &clk_regmap_divider_ops, \
>> + .parent_data = (_pdata), \
>> + .num_parents = 1, \
>> + .flags = CLK_SET_RATE_PARENT, \
>> + }, \
>> +}
>> +
>> +#define AUDIO_GATE(_name, _reg, _bit, _pdata) \
>> +static struct clk_regmap _name = { \
>> + .map = AUDIO_REG_MAP(_reg), \
>> + .data = &(struct clk_regmap_gate_data){ \
>> + .offset = AUDIO_REG_OFFSET(_reg), \
>> + .bit_idx = (_bit), \
>> + }, \
>> + .hw.init = &(struct clk_init_data) { \
>> + .name = #_name, \
>> + .ops = &clk_regmap_gate_ops, \
>> + .parent_data = (_pdata), \
>> + .num_parents = 1, \
>> + .flags = CLK_SET_RATE_PARENT, \
>> + }, \
>> +}
>> +
>> +#define AUDIO_SCLK_DIV(_name, _reg, _div_shift, _div_width, \
>> + _hi_shift, _hi_width, _pdata, _set_rate_parent) \
>> +static struct clk_regmap _name = { \
>> + .map = AUDIO_REG_MAP(_reg), \
>> + .data = &(struct meson_sclk_div_data) { \
>> + .div = { \
>> + .reg_off = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_div_shift), \
>> + .width = (_div_width), \
>> + }, \
>> + .hi = { \
>> + .reg_off = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_hi_shift), \
>> + .width = (_hi_width), \
>> + }, \
>> + }, \
>> + .hw.init = &(struct clk_init_data) { \
>> + .name = #_name, \
>> + .ops = &meson_sclk_div_ops, \
>> + .parent_data = (_pdata), \
>> + .num_parents = 1, \
>> + .flags = (_set_rate_parent) ? CLK_SET_RATE_PARENT : 0, \
>
> Does not help readeability. Just pass the flag as axg-audio does.
>
>> + }, \
>> +}
>> +
>> +#define AUDIO_TRIPHASE(_name, _reg, _width, _shift0, _shift1, _shift2, \
>> + _pdata) \
>> +static struct clk_regmap _name = { \
>> + .map = AUDIO_REG_MAP(_reg), \
>> + .data = &(struct meson_clk_triphase_data) { \
>> + .ph0 = { \
>> + .reg_off = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_shift0), \
>> + .width = (_width), \
>> + }, \
>> + .ph1 = { \
>> + .reg_off = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_shift1), \
>> + .width = (_width), \
>> + }, \
>> + .ph2 = { \
>> + .reg_off = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_shift2), \
>> + .width = (_width), \
>> + }, \
>> + }, \
>> + .hw.init = &(struct clk_init_data) { \
>> + .name = #_name, \
>> + .ops = &meson_clk_triphase_ops, \
>> + .parent_data = (_pdata), \
>> + .num_parents = 1, \
>> + .flags = CLK_SET_RATE_PARENT | CLK_DUTY_CYCLE_PARENT, \
>> + }, \
>> +}
>> +
>> +#define AUDIO_SCLK_WS(_name, _reg, _width, _shift_ph, _shift_ws, \
>> + _pdata) \
>> +static struct clk_regmap _name = { \
>> + .map = AUDIO_REG_MAP(_reg), \
>> + .data = &(struct meson_sclk_ws_inv_data) { \
>> + .ph = { \
>> + .reg_off = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_shift_ph), \
>> + .width = (_width), \
>> + }, \
>> + .ws = { \
>> + .reg_off = AUDIO_REG_OFFSET(_reg), \
>> + .shift = (_shift_ws), \
>> + .width = (_width), \
>> + }, \
>> + }, \
>> + .hw.init = &(struct clk_init_data) { \
>> + .name = #_name, \
>> + .ops = &meson_sclk_ws_inv_ops, \
>> + .parent_data = (_pdata), \
>> + .num_parents = 1, \
>> + .flags = CLK_SET_RATE_PARENT | CLK_DUTY_CYCLE_PARENT, \
>> + }, \
>> +}
>
> All the above does essentially the same things as the macro of
> axg-audio, to some minor differences. Yet it is another set to maintain.
>

Except one thing... Here I keep memory identifier to which this clock
belongs:

.map = AUDIO_REG_MAP(_reg),

It is workaround, but ->map the only common field in clk_regmap that
could be used for this purpose.

> I'd much prefer if you put the axg-audio macro in a header a re-used
> those. There would a single set to maintain. You may then specialize the
> included in the driver C file, to avoid redundant parameters
>
> Rework axg-audio to use clk_parent_data if you must, but not in the same
> series please.
>
>> +
>> +static const struct clk_parent_data a1_pclk_pdata[] = {
>> + { .fw_name = "pclk", },
>> +};
>> +
>> +AUDIO_GATE(audio_ddr_arb, AUDIO_CLK_GATE_EN0, 0, a1_pclk_pdata);
>> +AUDIO_GATE(audio_tdmin_a, AUDIO_CLK_GATE_EN0, 1, a1_pclk_pdata);
>> +AUDIO_GATE(audio_tdmin_b, AUDIO_CLK_GATE_EN0, 2, a1_pclk_pdata);
>> +AUDIO_GATE(audio_tdmin_lb, AUDIO_CLK_GATE_EN0, 3, a1_pclk_pdata);
>> +AUDIO_GATE(audio_loopback, AUDIO_CLK_GATE_EN0, 4, a1_pclk_pdata);
>> +AUDIO_GATE(audio_tdmout_a, AUDIO_CLK_GATE_EN0, 5, a1_pclk_pdata);
>> +AUDIO_GATE(audio_tdmout_b, AUDIO_CLK_GATE_EN0, 6, a1_pclk_pdata);
>> +AUDIO_GATE(audio_frddr_a, AUDIO_CLK_GATE_EN0, 7, a1_pclk_pdata);
>> +AUDIO_GATE(audio_frddr_b, AUDIO_CLK_GATE_EN0, 8, a1_pclk_pdata);
>> +AUDIO_GATE(audio_toddr_a, AUDIO_CLK_GATE_EN0, 9, a1_pclk_pdata);
>> +AUDIO_GATE(audio_toddr_b, AUDIO_CLK_GATE_EN0, 10, a1_pclk_pdata);
>> +AUDIO_GATE(audio_spdifin, AUDIO_CLK_GATE_EN0, 11, a1_pclk_pdata);
>> +AUDIO_GATE(audio_resample, AUDIO_CLK_GATE_EN0, 12, a1_pclk_pdata);
>> +AUDIO_GATE(audio_eqdrc, AUDIO_CLK_GATE_EN0, 13, a1_pclk_pdata);
>> +AUDIO_GATE(audio_audiolocker, AUDIO_CLK_GATE_EN0, 14, a1_pclk_pdata);
> This is what I mean by redundant parameter ^
>

Yep. I could define something like AUDIO_PCLK_GATE().

>> +
>> +AUDIO_GATE(audio2_ddr_arb, AUDIO2_CLK_GATE_EN0, 0, a1_pclk_pdata);
>> +AUDIO_GATE(audio2_pdm, AUDIO2_CLK_GATE_EN0, 1, a1_pclk_pdata);
>> +AUDIO_GATE(audio2_tdmin_vad, AUDIO2_CLK_GATE_EN0, 2, a1_pclk_pdata);
>> +AUDIO_GATE(audio2_toddr_vad, AUDIO2_CLK_GATE_EN0, 3, a1_pclk_pdata);
>> +AUDIO_GATE(audio2_vad, AUDIO2_CLK_GATE_EN0, 4, a1_pclk_pdata);
>> +AUDIO_GATE(audio2_audiotop, AUDIO2_CLK_GATE_EN0, 7, a1_pclk_pdata);
>> +
>> +static const struct clk_parent_data a1_mst_pdata[] = {
>> + { .fw_name = "dds_in" },
>> + { .fw_name = "fclk_div2" },
>> + { .fw_name = "fclk_div3" },
>> + { .fw_name = "hifi_pll" },
>> + { .fw_name = "xtal" },
>> +};
>> +
>> +#define AUDIO_MST_MCLK(_name, _reg) \
>> + AUDIO_MUX(_name##_mux, (_reg), 0x7, 24, a1_mst_pdata); \
>> + AUDIO_DIV(_name##_div, (_reg), 0, 16, \
>> + AUDIO_PDATA(_name##_mux)); \
>> + AUDIO_GATE(_name, (_reg), 31, AUDIO_PDATA(_name##_div))
>> +
>> +AUDIO_MST_MCLK(audio_mst_a_mclk, AUDIO_MCLK_A_CTRL);
>> +AUDIO_MST_MCLK(audio_mst_b_mclk, AUDIO_MCLK_B_CTRL);
>> +AUDIO_MST_MCLK(audio_mst_c_mclk, AUDIO_MCLK_C_CTRL);
>> +AUDIO_MST_MCLK(audio_mst_d_mclk, AUDIO_MCLK_D_CTRL);
>> +AUDIO_MST_MCLK(audio_spdifin_clk, AUDIO_CLK_SPDIFIN_CTRL);
>> +AUDIO_MST_MCLK(audio_eqdrc_clk, AUDIO_CLK_EQDRC_CTRL);
>> +
>> +AUDIO_MUX(audio_resample_clk_mux, AUDIO_CLK_RESAMPLE_CTRL, 0xf, 24,
>> + a1_mst_pdata);
>> +AUDIO_DIV(audio_resample_clk_div, AUDIO_CLK_RESAMPLE_CTRL, 0, 8,
>> + AUDIO_PDATA(audio_resample_clk_mux));
>> +AUDIO_GATE(audio_resample_clk, AUDIO_CLK_RESAMPLE_CTRL, 31,
>> + AUDIO_PDATA(audio_resample_clk_div));
>> +
>> +AUDIO_MUX(audio_locker_in_clk_mux, AUDIO_CLK_LOCKER_CTRL, 0xf, 8,
>> + a1_mst_pdata);
>> +AUDIO_DIV(audio_locker_in_clk_div, AUDIO_CLK_LOCKER_CTRL, 0, 8,
>> + AUDIO_PDATA(audio_locker_in_clk_mux));
>> +AUDIO_GATE(audio_locker_in_clk, AUDIO_CLK_LOCKER_CTRL, 15,
>> + AUDIO_PDATA(audio_locker_in_clk_div));
>> +
>> +AUDIO_MUX(audio_locker_out_clk_mux, AUDIO_CLK_LOCKER_CTRL, 0xf, 24,
>> + a1_mst_pdata);
>> +AUDIO_DIV(audio_locker_out_clk_div, AUDIO_CLK_LOCKER_CTRL, 16, 8,
>> + AUDIO_PDATA(audio_locker_out_clk_mux));
>> +AUDIO_GATE(audio_locker_out_clk, AUDIO_CLK_LOCKER_CTRL, 31,
>> + AUDIO_PDATA(audio_locker_out_clk_div));
>> +
>> +AUDIO_MST_MCLK(audio2_vad_mclk, AUDIO2_MCLK_VAD_CTRL);
>> +AUDIO_MST_MCLK(audio2_vad_clk, AUDIO2_CLK_VAD_CTRL);
>> +AUDIO_MST_MCLK(audio2_pdm_dclk, AUDIO2_CLK_PDMIN_CTRL0);
>> +AUDIO_MST_MCLK(audio2_pdm_sysclk, AUDIO2_CLK_PDMIN_CTRL1);
>> +
>> +#define AUDIO_MST_SCLK(_name, _reg0, _reg1, _pdata) \
>> + AUDIO_GATE(_name##_pre_en, (_reg0), 31, (_pdata)); \
>> + AUDIO_SCLK_DIV(_name##_div, (_reg0), 20, 10, 0, 0, \
>> + AUDIO_PDATA(_name##_pre_en), true); \
>> + AUDIO_GATE(_name##_post_en, (_reg0), 30, \
>> + AUDIO_PDATA(_name##_div)); \
>> + AUDIO_TRIPHASE(_name, (_reg1), 1, 0, 2, 4, \
>> + AUDIO_PDATA(_name##_post_en))
>> +
>
> Again, I'm not a fan of this many levels of macro. I can live with it
> but certainly don't want the burden of reviewing and maintaining for
> clock driver. AXG / G12 and A1 are obviously closely related, so make it common.
>
>> +#define AUDIO_MST_LRCLK(_name, _reg0, _reg1, _pdata) \
>> + AUDIO_SCLK_DIV(_name##_div, (_reg0), 0, 10, 10, 10, \
>> + (_pdata), false); \
>> + AUDIO_TRIPHASE(_name, (_reg1), 1, 1, 3, 5, \
>> + AUDIO_PDATA(_name##_div))
>> +
>> +AUDIO_MST_SCLK(audio_mst_a_sclk, AUDIO_MST_A_SCLK_CTRL0, AUDIO_MST_A_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_a_mclk));
>> +AUDIO_MST_SCLK(audio_mst_b_sclk, AUDIO_MST_B_SCLK_CTRL0, AUDIO_MST_B_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_b_mclk));
>> +AUDIO_MST_SCLK(audio_mst_c_sclk, AUDIO_MST_C_SCLK_CTRL0, AUDIO_MST_C_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_c_mclk));
>> +AUDIO_MST_SCLK(audio_mst_d_sclk, AUDIO_MST_D_SCLK_CTRL0, AUDIO_MST_D_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_d_mclk));
>> +
>> +AUDIO_MST_LRCLK(audio_mst_a_lrclk, AUDIO_MST_A_SCLK_CTRL0, AUDIO_MST_A_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_a_sclk_post_en));
>> +AUDIO_MST_LRCLK(audio_mst_b_lrclk, AUDIO_MST_B_SCLK_CTRL0, AUDIO_MST_B_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_b_sclk_post_en));
>> +AUDIO_MST_LRCLK(audio_mst_c_lrclk, AUDIO_MST_C_SCLK_CTRL0, AUDIO_MST_C_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_c_sclk_post_en));
>> +AUDIO_MST_LRCLK(audio_mst_d_lrclk, AUDIO_MST_D_SCLK_CTRL0, AUDIO_MST_D_SCLK_CTRL1,
>> + AUDIO_PDATA(audio_mst_d_sclk_post_en));
>> +
>> +static const struct clk_parent_data a1_mst_sclk_pdata[] = {
>> + { .hw = &audio_mst_a_sclk.hw },
>> + { .hw = &audio_mst_b_sclk.hw },
>> + { .hw = &audio_mst_c_sclk.hw },
>> + { .hw = &audio_mst_d_sclk.hw },
>> + { .fw_name = "slv_sclk0" },
>> + { .fw_name = "slv_sclk1" },
>> + { .fw_name = "slv_sclk2" },
>> + { .fw_name = "slv_sclk3" },
>> + { .fw_name = "slv_sclk4" },
>> + { .fw_name = "slv_sclk5" },
>> + { .fw_name = "slv_sclk6" },
>> + { .fw_name = "slv_sclk7" },
>> + { .fw_name = "slv_sclk8" },
>> + { .fw_name = "slv_sclk9" },
>> +};
>> +
>> +static const struct clk_parent_data a1_mst_lrclk_pdata[] = {
>> + { .hw = &audio_mst_a_lrclk.hw },
>> + { .hw = &audio_mst_b_lrclk.hw },
>> + { .hw = &audio_mst_c_lrclk.hw },
>> + { .hw = &audio_mst_d_lrclk.hw },
>> + { .fw_name = "slv_lrclk0" },
>> + { .fw_name = "slv_lrclk1" },
>> + { .fw_name = "slv_lrclk2" },
>> + { .fw_name = "slv_lrclk3" },
>> + { .fw_name = "slv_lrclk4" },
>> + { .fw_name = "slv_lrclk5" },
>> + { .fw_name = "slv_lrclk6" },
>> + { .fw_name = "slv_lrclk7" },
>> + { .fw_name = "slv_lrclk8" },
>> + { .fw_name = "slv_lrclk9" },
>> +};
>> +
>> +#define AUDIO_TDM_SCLK(_name, _reg) \
>> + AUDIO_MUX(_name##_mux, (_reg), 0xf, 24, a1_mst_sclk_pdata); \
>> + AUDIO_GATE(_name##_pre_en, (_reg), 31, \
>> + AUDIO_PDATA(_name##_mux)); \
>> + AUDIO_GATE(_name##_post_en, (_reg), 30, \
>> + AUDIO_PDATA(_name##_pre_en)); \
>> + AUDIO_SCLK_WS(_name, (_reg), 1, 29, 28, \
>> + AUDIO_PDATA(_name##_post_en))
>> +
>> +#define AUDIO_TDM_LRCLK(_name, _reg) \
>> + AUDIO_MUX(_name, (_reg), 0xf, 20, a1_mst_lrclk_pdata)
>> +
>> +AUDIO_TDM_SCLK(audio_tdmin_a_sclk, AUDIO_CLK_TDMIN_A_CTRL);
>> +AUDIO_TDM_SCLK(audio_tdmin_b_sclk, AUDIO_CLK_TDMIN_B_CTRL);
>> +AUDIO_TDM_SCLK(audio_tdmin_lb_sclk, AUDIO_CLK_TDMIN_LB_CTRL);
>> +AUDIO_TDM_SCLK(audio_tdmout_a_sclk, AUDIO_CLK_TDMOUT_A_CTRL);
>> +AUDIO_TDM_SCLK(audio_tdmout_b_sclk, AUDIO_CLK_TDMOUT_B_CTRL);
>> +
>> +AUDIO_TDM_LRCLK(audio_tdmin_a_lrclk, AUDIO_CLK_TDMIN_A_CTRL);
>> +AUDIO_TDM_LRCLK(audio_tdmin_b_lrclk, AUDIO_CLK_TDMIN_B_CTRL);
>> +AUDIO_TDM_LRCLK(audio_tdmin_lb_lrclk, AUDIO_CLK_TDMIN_LB_CTRL);
>> +AUDIO_TDM_LRCLK(audio_tdmout_a_lrclk, AUDIO_CLK_TDMOUT_A_CTRL);
>> +AUDIO_TDM_LRCLK(audio_tdmout_b_lrclk, AUDIO_CLK_TDMOUT_B_CTRL);
>> +
>> +static struct clk_hw *a1_audio_hw_clks[] = {
>> + [AUD_CLKID_DDR_ARB] = &audio_ddr_arb.hw,
>> + [AUD_CLKID_TDMIN_A] = &audio_tdmin_a.hw,
>> + [AUD_CLKID_TDMIN_B] = &audio_tdmin_b.hw,
>> + [AUD_CLKID_TDMIN_LB] = &audio_tdmin_lb.hw,
>> + [AUD_CLKID_LOOPBACK] = &audio_loopback.hw,
>> + [AUD_CLKID_TDMOUT_A] = &audio_tdmout_a.hw,
>> + [AUD_CLKID_TDMOUT_B] = &audio_tdmout_b.hw,
>> + [AUD_CLKID_FRDDR_A] = &audio_frddr_a.hw,
>> + [AUD_CLKID_FRDDR_B] = &audio_frddr_b.hw,
>> + [AUD_CLKID_TODDR_A] = &audio_toddr_a.hw,
>> + [AUD_CLKID_TODDR_B] = &audio_toddr_b.hw,
>> + [AUD_CLKID_SPDIFIN] = &audio_spdifin.hw,
>> + [AUD_CLKID_RESAMPLE] = &audio_resample.hw,
>> + [AUD_CLKID_EQDRC] = &audio_eqdrc.hw,
>> + [AUD_CLKID_LOCKER] = &audio_audiolocker.hw,
>> + [AUD_CLKID_MST_A_MCLK_SEL] = &audio_mst_a_mclk_mux.hw,
>> + [AUD_CLKID_MST_A_MCLK_DIV] = &audio_mst_a_mclk_div.hw,
>> + [AUD_CLKID_MST_A_MCLK] = &audio_mst_a_mclk.hw,
>> + [AUD_CLKID_MST_B_MCLK_SEL] = &audio_mst_b_mclk_mux.hw,
>> + [AUD_CLKID_MST_B_MCLK_DIV] = &audio_mst_b_mclk_div.hw,
>> + [AUD_CLKID_MST_B_MCLK] = &audio_mst_b_mclk.hw,
>> + [AUD_CLKID_MST_C_MCLK_SEL] = &audio_mst_c_mclk_mux.hw,
>> + [AUD_CLKID_MST_C_MCLK_DIV] = &audio_mst_c_mclk_div.hw,
>> + [AUD_CLKID_MST_C_MCLK] = &audio_mst_c_mclk.hw,
>> + [AUD_CLKID_MST_D_MCLK_SEL] = &audio_mst_d_mclk_mux.hw,
>> + [AUD_CLKID_MST_D_MCLK_DIV] = &audio_mst_d_mclk_div.hw,
>> + [AUD_CLKID_MST_D_MCLK] = &audio_mst_d_mclk.hw,
>> + [AUD_CLKID_RESAMPLE_CLK_SEL] = &audio_resample_clk_mux.hw,
>> + [AUD_CLKID_RESAMPLE_CLK_DIV] = &audio_resample_clk_div.hw,
>> + [AUD_CLKID_RESAMPLE_CLK] = &audio_resample_clk.hw,
>> + [AUD_CLKID_LOCKER_IN_CLK_SEL] = &audio_locker_in_clk_mux.hw,
>> + [AUD_CLKID_LOCKER_IN_CLK_DIV] = &audio_locker_in_clk_div.hw,
>> + [AUD_CLKID_LOCKER_IN_CLK] = &audio_locker_in_clk.hw,
>> + [AUD_CLKID_LOCKER_OUT_CLK_SEL] = &audio_locker_out_clk_mux.hw,
>> + [AUD_CLKID_LOCKER_OUT_CLK_DIV] = &audio_locker_out_clk_div.hw,
>> + [AUD_CLKID_LOCKER_OUT_CLK] = &audio_locker_out_clk.hw,
>> + [AUD_CLKID_SPDIFIN_CLK_SEL] = &audio_spdifin_clk_mux.hw,
>> + [AUD_CLKID_SPDIFIN_CLK_DIV] = &audio_spdifin_clk_div.hw,
>> + [AUD_CLKID_SPDIFIN_CLK] = &audio_spdifin_clk.hw,
>> + [AUD_CLKID_EQDRC_CLK_SEL] = &audio_eqdrc_clk_mux.hw,
>> + [AUD_CLKID_EQDRC_CLK_DIV] = &audio_eqdrc_clk_div.hw,
>> + [AUD_CLKID_EQDRC_CLK] = &audio_eqdrc_clk.hw,
>> + [AUD_CLKID_MST_A_SCLK_PRE_EN] = &audio_mst_a_sclk_pre_en.hw,
>> + [AUD_CLKID_MST_A_SCLK_DIV] = &audio_mst_a_sclk_div.hw,
>> + [AUD_CLKID_MST_A_SCLK_POST_EN] = &audio_mst_a_sclk_post_en.hw,
>> + [AUD_CLKID_MST_A_SCLK] = &audio_mst_a_sclk.hw,
>> + [AUD_CLKID_MST_B_SCLK_PRE_EN] = &audio_mst_b_sclk_pre_en.hw,
>> + [AUD_CLKID_MST_B_SCLK_DIV] = &audio_mst_b_sclk_div.hw,
>> + [AUD_CLKID_MST_B_SCLK_POST_EN] = &audio_mst_b_sclk_post_en.hw,
>> + [AUD_CLKID_MST_B_SCLK] = &audio_mst_b_sclk.hw,
>> + [AUD_CLKID_MST_C_SCLK_PRE_EN] = &audio_mst_c_sclk_pre_en.hw,
>> + [AUD_CLKID_MST_C_SCLK_DIV] = &audio_mst_c_sclk_div.hw,
>> + [AUD_CLKID_MST_C_SCLK_POST_EN] = &audio_mst_c_sclk_post_en.hw,
>> + [AUD_CLKID_MST_C_SCLK] = &audio_mst_c_sclk.hw,
>> + [AUD_CLKID_MST_D_SCLK_PRE_EN] = &audio_mst_d_sclk_pre_en.hw,
>> + [AUD_CLKID_MST_D_SCLK_DIV] = &audio_mst_d_sclk_div.hw,
>> + [AUD_CLKID_MST_D_SCLK_POST_EN] = &audio_mst_d_sclk_post_en.hw,
>> + [AUD_CLKID_MST_D_SCLK] = &audio_mst_d_sclk.hw,
>> + [AUD_CLKID_MST_A_LRCLK_DIV] = &audio_mst_a_lrclk_div.hw,
>> + [AUD_CLKID_MST_A_LRCLK] = &audio_mst_a_lrclk.hw,
>> + [AUD_CLKID_MST_B_LRCLK_DIV] = &audio_mst_b_lrclk_div.hw,
>> + [AUD_CLKID_MST_B_LRCLK] = &audio_mst_b_lrclk.hw,
>> + [AUD_CLKID_MST_C_LRCLK_DIV] = &audio_mst_c_lrclk_div.hw,
>> + [AUD_CLKID_MST_C_LRCLK] = &audio_mst_c_lrclk.hw,
>> + [AUD_CLKID_MST_D_LRCLK_DIV] = &audio_mst_d_lrclk_div.hw,
>> + [AUD_CLKID_MST_D_LRCLK] = &audio_mst_d_lrclk.hw,
>> + [AUD_CLKID_TDMIN_A_SCLK_SEL] = &audio_tdmin_a_sclk_mux.hw,
>> + [AUD_CLKID_TDMIN_A_SCLK_PRE_EN] = &audio_tdmin_a_sclk_pre_en.hw,
>> + [AUD_CLKID_TDMIN_A_SCLK_POST_EN] = &audio_tdmin_a_sclk_post_en.hw,
>> + [AUD_CLKID_TDMIN_A_SCLK] = &audio_tdmin_a_sclk.hw,
>> + [AUD_CLKID_TDMIN_A_LRCLK] = &audio_tdmin_a_lrclk.hw,
>> + [AUD_CLKID_TDMIN_B_SCLK_SEL] = &audio_tdmin_b_sclk_mux.hw,
>> + [AUD_CLKID_TDMIN_B_SCLK_PRE_EN] = &audio_tdmin_b_sclk_pre_en.hw,
>> + [AUD_CLKID_TDMIN_B_SCLK_POST_EN] = &audio_tdmin_b_sclk_post_en.hw,
>> + [AUD_CLKID_TDMIN_B_SCLK] = &audio_tdmin_b_sclk.hw,
>> + [AUD_CLKID_TDMIN_B_LRCLK] = &audio_tdmin_b_lrclk.hw,
>> + [AUD_CLKID_TDMIN_LB_SCLK_SEL] = &audio_tdmin_lb_sclk_mux.hw,
>> + [AUD_CLKID_TDMIN_LB_SCLK_PRE_EN] = &audio_tdmin_lb_sclk_pre_en.hw,
>> + [AUD_CLKID_TDMIN_LB_SCLK_POST_EN] = &audio_tdmin_lb_sclk_post_en.hw,
>> + [AUD_CLKID_TDMIN_LB_SCLK] = &audio_tdmin_lb_sclk.hw,
>> + [AUD_CLKID_TDMIN_LB_LRCLK] = &audio_tdmin_lb_lrclk.hw,
>> + [AUD_CLKID_TDMOUT_A_SCLK_SEL] = &audio_tdmout_a_sclk_mux.hw,
>> + [AUD_CLKID_TDMOUT_A_SCLK_PRE_EN] = &audio_tdmout_a_sclk_pre_en.hw,
>> + [AUD_CLKID_TDMOUT_A_SCLK_POST_EN] = &audio_tdmout_a_sclk_post_en.hw,
>> + [AUD_CLKID_TDMOUT_A_SCLK] = &audio_tdmout_a_sclk.hw,
>> + [AUD_CLKID_TDMOUT_A_LRCLK] = &audio_tdmout_a_lrclk.hw,
>> + [AUD_CLKID_TDMOUT_B_SCLK_SEL] = &audio_tdmout_b_sclk_mux.hw,
>> + [AUD_CLKID_TDMOUT_B_SCLK_PRE_EN] = &audio_tdmout_b_sclk_pre_en.hw,
>> + [AUD_CLKID_TDMOUT_B_SCLK_POST_EN] = &audio_tdmout_b_sclk_post_en.hw,
>> + [AUD_CLKID_TDMOUT_B_SCLK] = &audio_tdmout_b_sclk.hw,
>> + [AUD_CLKID_TDMOUT_B_LRCLK] = &audio_tdmout_b_lrclk.hw,
>> +
>> + [AUD2_CLKID_DDR_ARB] = &audio2_ddr_arb.hw,
>> + [AUD2_CLKID_PDM] = &audio2_pdm.hw,
>> + [AUD2_CLKID_TDMIN_VAD] = &audio2_tdmin_vad.hw,
>> + [AUD2_CLKID_TODDR_VAD] = &audio2_toddr_vad.hw,
>> + [AUD2_CLKID_VAD] = &audio2_vad.hw,
>> + [AUD2_CLKID_AUDIOTOP] = &audio2_audiotop.hw,
>> + [AUD2_CLKID_VAD_MCLK_SEL] = &audio2_vad_mclk_mux.hw,
>> + [AUD2_CLKID_VAD_MCLK_DIV] = &audio2_vad_mclk_div.hw,
>> + [AUD2_CLKID_VAD_MCLK] = &audio2_vad_mclk.hw,
>> + [AUD2_CLKID_VAD_CLK_SEL] = &audio2_vad_clk_mux.hw,
>> + [AUD2_CLKID_VAD_CLK_DIV] = &audio2_vad_clk_div.hw,
>> + [AUD2_CLKID_VAD_CLK] = &audio2_vad_clk.hw,
>> + [AUD2_CLKID_PDM_DCLK_SEL] = &audio2_pdm_dclk_mux.hw,
>> + [AUD2_CLKID_PDM_DCLK_DIV] = &audio2_pdm_dclk_div.hw,
>> + [AUD2_CLKID_PDM_DCLK] = &audio2_pdm_dclk.hw,
>> + [AUD2_CLKID_PDM_SYSCLK_SEL] = &audio2_pdm_sysclk_mux.hw,
>> + [AUD2_CLKID_PDM_SYSCLK_DIV] = &audio2_pdm_sysclk_div.hw,
>> + [AUD2_CLKID_PDM_SYSCLK] = &audio2_pdm_sysclk.hw,
>> +};
>> +
>> +static struct meson_clk_hw_data a1_audio_clks = {
>> + .hws = a1_audio_hw_clks,
>> + .num = ARRAY_SIZE(a1_audio_hw_clks),
>> +};
>> +
>> +static struct regmap *a1_audio_map(struct platform_device *pdev,
>> + unsigned int index)
>> +{
>> + char name[32];
>> + const struct regmap_config cfg = {
>> + .reg_bits = 32,
>> + .val_bits = 32,
>> + .reg_stride = 4,
>> + .name = name,
>
> Not necessary
>

This implementation uses two regmaps, and this field allow to avoid
errors like this:

[ 0.145530] debugfs: Directory 'fe050000.audio-clock-controller' with
parent 'regmap' already present!

>> + };
>> + void __iomem *base;
>> +
>> + base = devm_platform_ioremap_resource(pdev, index);
>> + if (IS_ERR(base))
>> + return base;
>> +
>> + scnprintf(name, sizeof(name), "%d", index);
>> + return devm_regmap_init_mmio(&pdev->dev, base, &cfg);
>> +}
>
> That is overengineered. Please keep it simple. Declare the regmap_config
> as static const global, and do it like axg-audio please.
>

This only reason why it is not "static const" because I need to set
unique name for each regmap.

>> +
>> +static int a1_register_clk(struct platform_device *pdev,
>> + struct regmap *map0, struct regmap *map1,
>> + struct clk_hw *hw)
>> +{
>> + struct clk_regmap *clk = container_of(hw, struct clk_regmap, hw);
>> +
>> + if (!hw)
>> + return 0;
>> +
>> + switch ((unsigned long)clk->map) {
>> + case AUDIO_RANGE_0:
>> + clk->map = map0;
>> + break;
>> + case AUDIO_RANGE_1:
>> + clk->map = map1;
>> + break;
>
> ... fishy
>
>> + default:
>> + WARN_ON(1);
>> + return -EINVAL;
>> + }
>> +
>> + return devm_clk_hw_register(&pdev->dev, hw);
>> +}
>> +
>> +static int a1_audio_clkc_probe(struct platform_device *pdev)
>> +{
>> + struct regmap *map0, *map1;
>> + struct clk *clk;
>> + unsigned int i;
>> + int ret;
>> +
>> + clk = devm_clk_get_enabled(&pdev->dev, "pclk");
>> + if (WARN_ON(IS_ERR(clk)))
>> + return PTR_ERR(clk);
>> +
>> + map0 = a1_audio_map(pdev, 0);
>> + if (IS_ERR(map0))
>> + return PTR_ERR(map0);
>> +
>> + map1 = a1_audio_map(pdev, 1);
>> + if (IS_ERR(map1))
>> + return PTR_ERR(map1);
>
> No - Looks to me you just have two clock controllers you are trying
> force into one.
>

See the begining.

>> +
>> + /*
>> + * Register and enable AUD2_CLKID_AUDIOTOP clock first. Unless
>> + * it is enabled any read/write to 'map0' hangs the CPU.
>> + */
>> +
>> + ret = a1_register_clk(pdev, map0, map1,
>> + a1_audio_clks.hws[AUD2_CLKID_AUDIOTOP]);
>> + if (ret)
>> + return ret;
>> +
>> + ret = clk_prepare_enable(a1_audio_clks.hws[AUD2_CLKID_AUDIOTOP]->clk);
>> + if (ret)
>> + return ret;
>
> Again, this shows 2 devices. The one related to your 'map0' should
> request AUD2_CLKID_AUDIOTOP as input and enable it right away.
>

See the begining.

>> +
>> + for (i = 0; i < a1_audio_clks.num; i++) {
>> + if (i == AUD2_CLKID_AUDIOTOP)
>> + continue;
>> +
>> + ret = a1_register_clk(pdev, map0, map1, a1_audio_clks.hws[i]);
>> + if (ret)
>> + return ret;
>> + }
>> +
>> + ret = devm_of_clk_add_hw_provider(&pdev->dev, meson_clk_hw_get,
>> + &a1_audio_clks);
>> + if (ret)
>> + return ret;
>> +
>> + BUILD_BUG_ON((unsigned long)AUDIO_REG_MAP(AUDIO_SW_RESET0) !=
>> + AUDIO_RANGE_0);
>
> Why is that necessary ?
>

A little paranoia. Here AUDIO_SW_RESET0 is handled as map0's register,
and I want to assert it.

>> + return meson_audio_rstc_register(&pdev->dev, map0,
>> + AUDIO_REG_OFFSET(AUDIO_SW_RESET0), 32);
>> +}
>> +
>> +static const struct of_device_id a1_audio_clkc_match_table[] = {
>> + { .compatible = "amlogic,a1-audio-clkc", },
>> + {}
>> +};
>> +MODULE_DEVICE_TABLE(of, a1_audio_clkc_match_table);
>> +
>> +static struct platform_driver a1_audio_clkc_driver = {
>> + .probe = a1_audio_clkc_probe,
>> + .driver = {
>> + .name = "a1-audio-clkc",
>> + .of_match_table = a1_audio_clkc_match_table,
>> + },
>> +};
>> +module_platform_driver(a1_audio_clkc_driver);
>> +
>> +MODULE_DESCRIPTION("Amlogic A1 Audio Clock driver");
>> +MODULE_AUTHOR("Jan Dakinevich <jan.dakinevich@xxxxxxxxxxxxxxxxx>");
>> +MODULE_LICENSE("GPL");
>> diff --git a/drivers/clk/meson/a1-audio.h b/drivers/clk/meson/a1-audio.h
>> new file mode 100644
>> index 000000000000..f994e87276cd
>> --- /dev/null
>> +++ b/drivers/clk/meson/a1-audio.h
>> @@ -0,0 +1,58 @@
>> +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
>> +/*
>> + * Copyright (c) 2024, SaluteDevices. All Rights Reserved.
>> + *
>> + * Author: Jan Dakinevich <jan.dakinevich@xxxxxxxxxxxxxxxxx>
>> + */
>> +
>> +#ifndef __A1_AUDIO_H
>> +#define __A1_AUDIO_H
>> +
>> +#define AUDIO_RANGE_0 0xa
>> +#define AUDIO_RANGE_1 0xb
>> +#define AUDIO_RANGE_SHIFT 16
>> +
>> +#define AUDIO_REG(_range, _offset) \
>> + (((_range) << AUDIO_RANGE_SHIFT) + (_offset))
>> +
>> +#define AUDIO_REG_OFFSET(_reg) \
>> + ((_reg) & ((1 << AUDIO_RANGE_SHIFT) - 1))
>> +
>> +#define AUDIO_REG_MAP(_reg) \
>> + ((void *)((_reg) >> AUDIO_RANGE_SHIFT))
>
> That is seriouly overengineered.
> The following are offset. Just write what they are.
>

This is all in order to keep range's identifier together with offset and
then use it to store the identifier in clk_regmaps.

> There is not reason to put that into a header. It is only going to be
> used by a single driver.
> >> +
>> +#define AUDIO_CLK_GATE_EN0 AUDIO_REG(AUDIO_RANGE_0, 0x000)
>> +#define AUDIO_MCLK_A_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x008)
>> +#define AUDIO_MCLK_B_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x00c)
>> +#define AUDIO_MCLK_C_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x010)
>> +#define AUDIO_MCLK_D_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x014)
>> +#define AUDIO_MCLK_E_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x018)
>> +#define AUDIO_MCLK_F_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x01c)
>> +#define AUDIO_SW_RESET0 AUDIO_REG(AUDIO_RANGE_0, 0x028)
>> +#define AUDIO_MST_A_SCLK_CTRL0 AUDIO_REG(AUDIO_RANGE_0, 0x040)
>> +#define AUDIO_MST_A_SCLK_CTRL1 AUDIO_REG(AUDIO_RANGE_0, 0x044)
>> +#define AUDIO_MST_B_SCLK_CTRL0 AUDIO_REG(AUDIO_RANGE_0, 0x048)
>> +#define AUDIO_MST_B_SCLK_CTRL1 AUDIO_REG(AUDIO_RANGE_0, 0x04c)
>> +#define AUDIO_MST_C_SCLK_CTRL0 AUDIO_REG(AUDIO_RANGE_0, 0x050)
>> +#define AUDIO_MST_C_SCLK_CTRL1 AUDIO_REG(AUDIO_RANGE_0, 0x054)
>> +#define AUDIO_MST_D_SCLK_CTRL0 AUDIO_REG(AUDIO_RANGE_0, 0x058)
>> +#define AUDIO_MST_D_SCLK_CTRL1 AUDIO_REG(AUDIO_RANGE_0, 0x05c)
>> +#define AUDIO_CLK_TDMIN_A_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x080)
>> +#define AUDIO_CLK_TDMIN_B_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x084)
>> +#define AUDIO_CLK_TDMIN_LB_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x08c)
>> +#define AUDIO_CLK_TDMOUT_A_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x090)
>> +#define AUDIO_CLK_TDMOUT_B_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x094)
>> +#define AUDIO_CLK_SPDIFIN_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x09c)
>> +#define AUDIO_CLK_RESAMPLE_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x0a4)
>> +#define AUDIO_CLK_LOCKER_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x0a8)
>> +#define AUDIO_CLK_EQDRC_CTRL AUDIO_REG(AUDIO_RANGE_0, 0x0c0)
>> +
>> +#define AUDIO2_CLK_GATE_EN0 AUDIO_REG(AUDIO_RANGE_1, 0x00c)
>> +#define AUDIO2_MCLK_VAD_CTRL AUDIO_REG(AUDIO_RANGE_1, 0x040)
>> +#define AUDIO2_CLK_VAD_CTRL AUDIO_REG(AUDIO_RANGE_1, 0x044)
>> +#define AUDIO2_CLK_PDMIN_CTRL0 AUDIO_REG(AUDIO_RANGE_1, 0x058)
>> +#define AUDIO2_CLK_PDMIN_CTRL1 AUDIO_REG(AUDIO_RANGE_1, 0x05c)
>> +
>> +#include <dt-bindings/clock/amlogic,a1-audio-clkc.h>
>> +
>> +#endif /* __A1_AUDIO_H */
>
>

--
Best regards
Jan Dakinevich

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