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From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: Dmitry Osipenko <digetx@gmail.com>,
	Sameer Pujar <spujar@nvidia.com>, <thierry.reding@gmail.com>,
	<jonathanh@nvidia.com>, <broonie@kernel.org>,
	<lgirdwood@gmail.com>, <perex@perex.cz>, <tiwai@suse.com>,
	<mperttunen@nvidia.com>, <gregkh@linuxfoundation.org>,
	<sboyd@kernel.org>, <robh+dt@kernel.org>, <mark.rutland@arm.com>
Cc: <pdeschrijver@nvidia.com>, <pgaikwad@nvidia.com>,
	<josephl@nvidia.com>, <daniel.lezcano@linaro.org>,
	<mmaddireddy@nvidia.com>, <markz@nvidia.com>,
	<devicetree@vger.kernel.org>, <linux-clk@vger.kernel.org>,
	<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 12/19] ASoC: tegra: Add audio mclk configuration
Date: Tue, 7 Jan 2020 15:23:50 -0800	[thread overview]
Message-ID: <fb9b620b-e923-abbb-e293-bea763802440@nvidia.com> (raw)
In-Reply-To: <adb4c9dd-043a-ffca-7a1d-c6b30055b7a0@gmail.com>


On 1/7/20 2:56 PM, Dmitry Osipenko wrote:
> 07.01.2020 19:56, Sowjanya Komatineni пишет:
>> On 1/7/20 3:14 AM, Sameer Pujar wrote:
>>> On 1/7/2020 9:44 AM, Sowjanya Komatineni wrote:
>>>> Tegra PMC clock clk_out_1 is dedicated for audio mclk from Tegra30
>>>> through Tegra210 and currently Tegra clock driver does the initial
>>>> parent
>>>> configuration for audio mclk and keeps it enabled by default.
>>>>
>>>> With the move of PMC clocks from clock driver into pmc driver,
>>>> audio clocks parent configuration can be specified through the device
>>>> tree
>>>> using assigned-clock-parents property and audio mclk control should be
>>>> taken care by the audio driver.
>>>>
>>>> This patch has implementation for parent configuration when default
>>>> parent
>>>> configuration is not specified in the device tree and controls audio
>>>> mclk
>>>> enable and disable during machine startup and shutdown.
>>>>
>>>> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
>>> Minor comments, otherwise LGTM.
>>>
>> Thanks Sameer. Will fix.
>>>> ---
>>>>    sound/soc/tegra/tegra_alc5632.c    | 21 ++++++++++
>>>>    sound/soc/tegra/tegra_asoc_utils.c | 84
>>>> ++++++++++++++++++++++++--------------
>>>>    sound/soc/tegra/tegra_asoc_utils.h |  2 +
>>>>    sound/soc/tegra/tegra_max98090.c   | 21 ++++++++++
>>>>    sound/soc/tegra/tegra_rt5640.c     | 21 ++++++++++
>>>>    sound/soc/tegra/tegra_rt5677.c     | 21 ++++++++++
>>>>    sound/soc/tegra/tegra_sgtl5000.c   | 21 ++++++++++
>>>>    sound/soc/tegra/tegra_wm8753.c     | 21 ++++++++++
>>>>    sound/soc/tegra/tegra_wm8903.c     | 21 ++++++++++
>>>>    sound/soc/tegra/trimslice.c        | 21 ++++++++++
>>>>    10 files changed, 224 insertions(+), 30 deletions(-)
>>>>
>>>> diff --git a/sound/soc/tegra/tegra_alc5632.c
>>>> b/sound/soc/tegra/tegra_alc5632.c
>>>> index 50a6d2ff4442..0fd10023f7a6 100644
>>>> --- a/sound/soc/tegra/tegra_alc5632.c
>>>> +++ b/sound/soc/tegra/tegra_alc5632.c
>>>> @@ -62,8 +62,29 @@ static int tegra_alc5632_asoc_hw_params(struct
>>>> snd_pcm_substream *substream,
>>>>        return 0;
>>>>    }
>>>>    +static int tegra_alc5632_asoc_startup(struct snd_pcm_substream
>>>> *substream)
>>>> +{
>>>> +    struct snd_soc_pcm_runtime *rtd = substream->private_data;
>>>> +    struct tegra_alc5632 *machine =
>>>> snd_soc_card_get_drvdata(rtd->card);
>>>> +    int ret;
>>>> +
>>>> +    ret = tegra_asoc_utils_clk_enable(&machine->util_data);
>>>> +
>>>> +    return ret;
>>>> +}
>>>> +
>>>> +static void tegra_alc5632_asoc_shutdown(struct snd_pcm_substream
>>>> *substream)
>>>> +{
>>>> +    struct snd_soc_pcm_runtime *rtd = substream->private_data;
>>>> +    struct tegra_alc5632 *machine =
>>>> snd_soc_card_get_drvdata(rtd->card);
>>>> +
>>>> +    tegra_asoc_utils_clk_disable(&machine->util_data);
>>>> +}
>>>> +
>>>>    static const struct snd_soc_ops tegra_alc5632_asoc_ops = {
>>>> +    .startup = tegra_alc5632_asoc_startup,
>>>>        .hw_params = tegra_alc5632_asoc_hw_params,
>>>> +    .shutdown = tegra_alc5632_asoc_shutdown,
>>>>    };
>>>>      static struct snd_soc_jack tegra_alc5632_hs_jack;
>>>> diff --git a/sound/soc/tegra/tegra_asoc_utils.c
>>>> b/sound/soc/tegra/tegra_asoc_utils.c
>>>> index 0d2271952555..2886ae9f5a16 100644
>>>> --- a/sound/soc/tegra/tegra_asoc_utils.c
>>>> +++ b/sound/soc/tegra/tegra_asoc_utils.c
>>>> @@ -60,8 +60,6 @@ int tegra_asoc_utils_set_rate(struct
>>>> tegra_asoc_utils_data *data, int srate,
>>>>        data->set_mclk = 0;
>>>>          clk_disable_unprepare(data->clk_cdev1);
>>>> -    clk_disable_unprepare(data->clk_pll_a_out0);
>>>> -    clk_disable_unprepare(data->clk_pll_a);
>>>>          err = clk_set_rate(data->clk_pll_a, new_baseclock);
>>>>        if (err) {
>>>> @@ -77,18 +75,6 @@ int tegra_asoc_utils_set_rate(struct
>>>> tegra_asoc_utils_data *data, int srate,
>>>>          /* Don't set cdev1/extern1 rate; it's locked to pll_a_out0 */
>>>>    -    err = clk_prepare_enable(data->clk_pll_a);
>>>> -    if (err) {
>>>> -        dev_err(data->dev, "Can't enable pll_a: %d\n", err);
>>>> -        return err;
>>>> -    }
>>>> -
>>>> -    err = clk_prepare_enable(data->clk_pll_a_out0);
>>>> -    if (err) {
>>>> -        dev_err(data->dev, "Can't enable pll_a_out0: %d\n", err);
>>>> -        return err;
>>>> -    }
>>>> -
>>>>        err = clk_prepare_enable(data->clk_cdev1);
>>>>        if (err) {
>>>>            dev_err(data->dev, "Can't enable cdev1: %d\n", err);
>>>> @@ -109,8 +95,6 @@ int tegra_asoc_utils_set_ac97_rate(struct
>>>> tegra_asoc_utils_data *data)
>>>>        int err;
>>>>          clk_disable_unprepare(data->clk_cdev1);
>>>> -    clk_disable_unprepare(data->clk_pll_a_out0);
>>>> -    clk_disable_unprepare(data->clk_pll_a);
>>>>          /*
>>>>         * AC97 rate is fixed at 24.576MHz and is used for both the host
>>>> @@ -130,17 +114,27 @@ int tegra_asoc_utils_set_ac97_rate(struct
>>>> tegra_asoc_utils_data *data)
>>>>          /* Don't set cdev1/extern1 rate; it's locked to pll_a_out0 */
>>>>    -    err = clk_prepare_enable(data->clk_pll_a);
>>>> +    err = clk_prepare_enable(data->clk_cdev1);
>>>>        if (err) {
>>>> -        dev_err(data->dev, "Can't enable pll_a: %d\n", err);
>>>> +        dev_err(data->dev, "Can't enable cdev1: %d\n", err);
>>>>            return err;
>>>>        }
>>>>    -    err = clk_prepare_enable(data->clk_pll_a_out0);
>>>> -    if (err) {
>>>> -        dev_err(data->dev, "Can't enable pll_a_out0: %d\n", err);
>>>> -        return err;
>>>> -    }
>>>> +    data->set_baseclock = pll_rate;
>>>> +    data->set_mclk = ac97_rate;
>>>> +
>>>> +    return 0;
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(tegra_asoc_utils_set_ac97_rate);
>>>> +
>>>> +void tegra_asoc_utils_clk_disable(struct tegra_asoc_utils_data *data)
>>>> +{
>>>> +    clk_disable_unprepare(data->clk_cdev1);
>>>> +}
>>>> +
>>>> +int tegra_asoc_utils_clk_enable(struct tegra_asoc_utils_data *data)
>>>> +{
>>>> +    int err;
>>>>          err = clk_prepare_enable(data->clk_cdev1);
>>>>        if (err) {
>>>> @@ -148,16 +142,13 @@ int tegra_asoc_utils_set_ac97_rate(struct
>>>> tegra_asoc_utils_data *data)
>>>>            return err;
>>>>        }
>>>>    -    data->set_baseclock = pll_rate;
>>>> -    data->set_mclk = ac97_rate;
>>>> -
>>>>        return 0;
>>>>    }
>>>> -EXPORT_SYMBOL_GPL(tegra_asoc_utils_set_ac97_rate);
>>>>      int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
>>>>                  struct device *dev)
>>>>    {
>>>> +    struct clk *clk_out_1, *clk_extern1;
>>>>        int ret;
>>>>          data->dev = dev;
>>>> @@ -193,9 +184,42 @@ int tegra_asoc_utils_init(struct
>>>> tegra_asoc_utils_data *data,
>>>>            return PTR_ERR(data->clk_cdev1);
>>>>        }
>>>>    -    ret = tegra_asoc_utils_set_rate(data, 44100, 256 * 44100);
>>>> -    if (ret)
>>>> -        return ret;
>>>> +    /*
>>>> +     * If clock parents are not set in DT, configure here to use
>>>> clk_out_1
>>>> +     * as mclk and extern1 as parent for Tegra30 and higher.
>>>> +     */
>>>> +    if (!of_find_property(dev->of_node, "assigned-clock-parents",
>>>> NULL) &&
>>>> +        data->soc > TEGRA_ASOC_UTILS_SOC_TEGRA20) {
>>>> +        dev_err(data->dev,
>>> As this is a fallback mechanism, use dev_info or dev_dbg instead?
> dev_warn
>
>>>> +            "Configuring clocks for a legacy device-tree\n");
> I'd also add another message here saying "Please update your DT", for
> clarity.
OK, Will add.

  reply	other threads:[~2020-01-07 23:23 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-07  4:13 [PATCH v6 00/19] Move PMC clocks into Tegra PMC driver Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 01/19] dt-bindings: clock: tegra: Change CLK_M_DIV to OSC_DIV clocks Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 02/19] clk: tegra: Change CLK_M_DIV clocks " Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 03/19] clk: tegra: Fix Tegra PMC clock out parents Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 04/19] dt-bindings: tegra: Convert Tegra PMC bindings to YAML Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 05/19] dt-bindings: soc: tegra-pmc: Add Tegra PMC clock bindings Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 06/19] soc: tegra: Add Tegra PMC clocks registration into PMC driver Sowjanya Komatineni
2020-01-08  1:00   ` Dmitry Osipenko
2020-01-08  1:13     ` Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 07/19] dt-bindings: soc: tegra-pmc: Add id for Tegra PMC 32KHz blink clock Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 08/19] soc: tegra: Add support for " Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 09/19] clk: tegra: Remove tegra_pmc_clk_init along with clk ids Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 10/19] dt-bindings: clock: tegra: Remove pmc clock ids from clock dt-bindings Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 11/19] ASoC: tegra: Use device managed resource APIs to get the clock Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 12/19] ASoC: tegra: Add audio mclk configuration Sowjanya Komatineni
2020-01-07 11:14   ` Sameer Pujar
2020-01-07 16:56     ` Sowjanya Komatineni
2020-01-07 22:56       ` Dmitry Osipenko
2020-01-07 23:23         ` Sowjanya Komatineni [this message]
2020-01-07  4:14 ` [PATCH v6 13/19] ASoC: tegra: Add fallback implementation for audio mclk Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 14/19] clk: tegra: Remove audio related clock enables from init_table Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 15/19] ARM: dts: tegra: Add clock-cells property to pmc Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 16/19] arm64: tegra: Add clock-cells property to Tegra PMC node Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 17/19] ARM: tegra: Update sound node clocks in device tree Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 18/19] arm64: tegra: smaug: Change clk_out_2 provider to pmc Sowjanya Komatineni
2020-01-07  4:14 ` [PATCH v6 19/19] ASoC: nau8825: change Tegra clk_out_2 provider to tegra_pmc Sowjanya Komatineni
2020-01-07 12:21 ` [PATCH v6 00/19] Move PMC clocks into Tegra PMC driver Thierry Reding
2020-01-07 16:50   ` Sowjanya Komatineni
2020-01-08  0:40     ` Dmitry Osipenko
2020-01-07 23:01 ` Dmitry Osipenko
2020-01-07 23:24   ` Sowjanya Komatineni
2020-01-07 23:28     ` Dmitry Osipenko
2020-01-08  0:02       ` Sowjanya Komatineni
2020-01-08  1:01         ` Dmitry Osipenko

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