From: Hans de Goede <hdegoede@redhat.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Jani Nikula" <jani.nikula@linux.intel.com>,
"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
"Len Brown" <lenb@kernel.org>,
linux-pwm@vger.kernel.org,
intel-gfx <intel-gfx@lists.freedesktop.org>,
dri-devel@lists.freedesktop.org,
"Mika Westerberg" <mika.westerberg@linux.intel.com>,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH v2 10/15] pwm: crc: Implement apply() method to support the new atomic PWM API
Date: Tue, 9 Jun 2020 15:44:18 +0200 [thread overview]
Message-ID: <93c7843d-1225-c8c6-9eb7-1f11b44bec34@redhat.com> (raw)
In-Reply-To: <20200609113220.GM2428291@smile.fi.intel.com>
Hi,
On 6/9/20 1:32 PM, Andy Shevchenko wrote:
> On Sun, Jun 07, 2020 at 08:18:35PM +0200, Hans de Goede wrote:
>> Replace the enable, disable and config pwm_ops with an apply op,
>> to support the new atomic PWM API.
>
> ...
>
>> -static int crc_pwm_calc_clk_div(int period_ns)
>> +static int crc_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
>> + const struct pwm_state *state)
>> {
>> - int clk_div;
>> -
>> - clk_div = PWM_BASE_CLK_MHZ * period_ns / (256 * NSEC_PER_MHZ);
>> - /* clk_div 1 - 128, maps to register values 0-127 */
>> - if (clk_div > 0)
>> - clk_div--;
>> -
>> - return clk_div;
>> -}
>
> ...
>
>> + clk_div = PWM_BASE_CLK_MHZ * state->period /
>> + (256 * NSEC_PER_MHZ);
>> + /* clk_div 1 - 128, maps to register values 0-127 */
>> + if (clk_div > 0)
>> + clk_div--;
>
> And again... :-(
Well yes I cannot help it that the original code, as submitted by Intel,
was of very questionable quality, so instead of just converting it to the
atomic PWM API I had to do a ton of bugfixes first... I tried to do
this all in small bits rather then in a single big rewrite the buggy
<beep> commit to make life easier for reviewers.
I can introduce the crc_pwm_calc_clk_div helper earlier as you suggested
in an earlier mail. I guess I could also keep the helper here, and then
fold it into the function in a later commit (*).
Would that work for you ?
Regards,
Hans
*) Because having a helper for 3 lines of code when it is used only
once is not helpful IMHO, it only makes it harder to figure out what
the code is exactly doing when readin the code.
WARNING: multiple messages have this Message-ID (diff)
From: Hans de Goede <hdegoede@redhat.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: linux-pwm@vger.kernel.org,
intel-gfx <intel-gfx@lists.freedesktop.org>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
linux-acpi@vger.kernel.org,
"Thierry Reding" <thierry.reding@gmail.com>,
dri-devel@lists.freedesktop.org,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Mika Westerberg" <mika.westerberg@linux.intel.com>,
"Len Brown" <lenb@kernel.org>
Subject: Re: [PATCH v2 10/15] pwm: crc: Implement apply() method to support the new atomic PWM API
Date: Tue, 9 Jun 2020 15:44:18 +0200 [thread overview]
Message-ID: <93c7843d-1225-c8c6-9eb7-1f11b44bec34@redhat.com> (raw)
In-Reply-To: <20200609113220.GM2428291@smile.fi.intel.com>
Hi,
On 6/9/20 1:32 PM, Andy Shevchenko wrote:
> On Sun, Jun 07, 2020 at 08:18:35PM +0200, Hans de Goede wrote:
>> Replace the enable, disable and config pwm_ops with an apply op,
>> to support the new atomic PWM API.
>
> ...
>
>> -static int crc_pwm_calc_clk_div(int period_ns)
>> +static int crc_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
>> + const struct pwm_state *state)
>> {
>> - int clk_div;
>> -
>> - clk_div = PWM_BASE_CLK_MHZ * period_ns / (256 * NSEC_PER_MHZ);
>> - /* clk_div 1 - 128, maps to register values 0-127 */
>> - if (clk_div > 0)
>> - clk_div--;
>> -
>> - return clk_div;
>> -}
>
> ...
>
>> + clk_div = PWM_BASE_CLK_MHZ * state->period /
>> + (256 * NSEC_PER_MHZ);
>> + /* clk_div 1 - 128, maps to register values 0-127 */
>> + if (clk_div > 0)
>> + clk_div--;
>
> And again... :-(
Well yes I cannot help it that the original code, as submitted by Intel,
was of very questionable quality, so instead of just converting it to the
atomic PWM API I had to do a ton of bugfixes first... I tried to do
this all in small bits rather then in a single big rewrite the buggy
<beep> commit to make life easier for reviewers.
I can introduce the crc_pwm_calc_clk_div helper earlier as you suggested
in an earlier mail. I guess I could also keep the helper here, and then
fold it into the function in a later commit (*).
Would that work for you ?
Regards,
Hans
*) Because having a helper for 3 lines of code when it is used only
once is not helpful IMHO, it only makes it harder to figure out what
the code is exactly doing when readin the code.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: Hans de Goede <hdegoede@redhat.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: linux-pwm@vger.kernel.org,
intel-gfx <intel-gfx@lists.freedesktop.org>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
linux-acpi@vger.kernel.org, dri-devel@lists.freedesktop.org,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Mika Westerberg" <mika.westerberg@linux.intel.com>,
"Len Brown" <lenb@kernel.org>
Subject: Re: [Intel-gfx] [PATCH v2 10/15] pwm: crc: Implement apply() method to support the new atomic PWM API
Date: Tue, 9 Jun 2020 15:44:18 +0200 [thread overview]
Message-ID: <93c7843d-1225-c8c6-9eb7-1f11b44bec34@redhat.com> (raw)
In-Reply-To: <20200609113220.GM2428291@smile.fi.intel.com>
Hi,
On 6/9/20 1:32 PM, Andy Shevchenko wrote:
> On Sun, Jun 07, 2020 at 08:18:35PM +0200, Hans de Goede wrote:
>> Replace the enable, disable and config pwm_ops with an apply op,
>> to support the new atomic PWM API.
>
> ...
>
>> -static int crc_pwm_calc_clk_div(int period_ns)
>> +static int crc_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
>> + const struct pwm_state *state)
>> {
>> - int clk_div;
>> -
>> - clk_div = PWM_BASE_CLK_MHZ * period_ns / (256 * NSEC_PER_MHZ);
>> - /* clk_div 1 - 128, maps to register values 0-127 */
>> - if (clk_div > 0)
>> - clk_div--;
>> -
>> - return clk_div;
>> -}
>
> ...
>
>> + clk_div = PWM_BASE_CLK_MHZ * state->period /
>> + (256 * NSEC_PER_MHZ);
>> + /* clk_div 1 - 128, maps to register values 0-127 */
>> + if (clk_div > 0)
>> + clk_div--;
>
> And again... :-(
Well yes I cannot help it that the original code, as submitted by Intel,
was of very questionable quality, so instead of just converting it to the
atomic PWM API I had to do a ton of bugfixes first... I tried to do
this all in small bits rather then in a single big rewrite the buggy
<beep> commit to make life easier for reviewers.
I can introduce the crc_pwm_calc_clk_div helper earlier as you suggested
in an earlier mail. I guess I could also keep the helper here, and then
fold it into the function in a later commit (*).
Would that work for you ?
Regards,
Hans
*) Because having a helper for 3 lines of code when it is used only
once is not helpful IMHO, it only makes it harder to figure out what
the code is exactly doing when readin the code.
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2020-06-09 13:44 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-07 18:18 [PATCH v2 00/15] pwm/i915: Convert pwm-crc and i915 driver's PWM code to use the atomic PWM API Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 01/15] ACPI / LPSS: Resume Cherry Trail PWM controller in no-irq phase Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 02/15] ACPI / LPSS: Save Cherry Trail PWM ctx registers only once (at activation) Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 03/15] pwm: lpss: Add range limit check for the base_unit register value Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-08 3:50 ` Andy Shevchenko
2020-06-08 3:50 ` [Intel-gfx] " Andy Shevchenko
2020-06-08 3:50 ` Andy Shevchenko
2020-06-08 11:07 ` Hans de Goede
2020-06-08 11:07 ` [Intel-gfx] " Hans de Goede
2020-06-08 11:07 ` Hans de Goede
2020-06-08 12:51 ` Andy Shevchenko
2020-06-08 12:51 ` [Intel-gfx] " Andy Shevchenko
2020-06-08 12:51 ` Andy Shevchenko
2020-06-08 12:51 ` Andy Shevchenko
2020-06-08 14:19 ` Hans de Goede
2020-06-08 14:19 ` [Intel-gfx] " Hans de Goede
2020-06-08 14:19 ` Hans de Goede
2020-06-11 22:12 ` Uwe Kleine-König
2020-06-11 22:12 ` [Intel-gfx] " Uwe Kleine-König
2020-06-11 22:12 ` Uwe Kleine-König
2020-06-12 11:57 ` Andy Shevchenko
2020-06-12 11:57 ` [Intel-gfx] " Andy Shevchenko
2020-06-12 11:57 ` Andy Shevchenko
2020-06-13 20:50 ` Uwe Kleine-König
2020-06-13 20:50 ` [Intel-gfx] " Uwe Kleine-König
2020-06-13 20:50 ` Uwe Kleine-König
2020-06-07 18:18 ` [PATCH v2 04/15] pwm: lpss: Fix off by one error in base_unit math in pwm_lpss_prepare() Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-08 3:55 ` Andy Shevchenko
2020-06-08 3:55 ` [Intel-gfx] " Andy Shevchenko
2020-06-08 3:55 ` Andy Shevchenko
2020-06-08 11:13 ` Hans de Goede
2020-06-08 11:13 ` [Intel-gfx] " Hans de Goede
2020-06-08 11:13 ` Hans de Goede
2020-06-08 11:13 ` Hans de Goede
2020-06-08 12:55 ` Andy Shevchenko
2020-06-08 12:55 ` [Intel-gfx] " Andy Shevchenko
2020-06-08 12:55 ` Andy Shevchenko
2020-06-07 18:18 ` [PATCH v2 05/15] pwm: lpss: Set SW_UPDATE bit when enabling the PWM Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 06/15] pwm: crc: Fix period / duty_cycle times being off by a factor of 256 Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-09 11:29 ` Andy Shevchenko
2020-06-09 11:29 ` [Intel-gfx] " Andy Shevchenko
2020-06-09 11:29 ` Andy Shevchenko
2020-06-09 13:45 ` Hans de Goede
2020-06-09 13:45 ` [Intel-gfx] " Hans de Goede
2020-06-09 13:45 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 07/15] pwm: crc: Fix off-by-one error in the clock-divider calculations Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 08/15] pwm: crc: Fix period changes not having any effect Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 09/15] pwm: crc: Enable/disable PWM output on enable/disable Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-09 11:31 ` Andy Shevchenko
2020-06-09 11:31 ` [Intel-gfx] " Andy Shevchenko
2020-06-09 11:31 ` Andy Shevchenko
2020-06-11 22:20 ` Uwe Kleine-König
2020-06-11 22:20 ` [Intel-gfx] " Uwe Kleine-König
2020-06-11 22:20 ` Uwe Kleine-König
2020-06-12 16:59 ` Hans de Goede
2020-06-12 16:59 ` [Intel-gfx] " Hans de Goede
2020-06-12 16:59 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 10/15] pwm: crc: Implement apply() method to support the new atomic PWM API Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-09 11:32 ` Andy Shevchenko
2020-06-09 11:32 ` [Intel-gfx] " Andy Shevchenko
2020-06-09 11:32 ` Andy Shevchenko
2020-06-09 13:44 ` Hans de Goede [this message]
2020-06-09 13:44 ` [Intel-gfx] " Hans de Goede
2020-06-09 13:44 ` Hans de Goede
2020-06-09 13:50 ` Andy Shevchenko
2020-06-09 13:50 ` [Intel-gfx] " Andy Shevchenko
2020-06-09 13:50 ` Andy Shevchenko
2020-06-07 18:18 ` [PATCH v2 11/15] pwm: crc: Implement get_state() method Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-09 11:32 ` Andy Shevchenko
2020-06-09 11:32 ` [Intel-gfx] " Andy Shevchenko
2020-06-09 11:32 ` Andy Shevchenko
2020-06-11 21:37 ` Uwe Kleine-König
2020-06-11 21:37 ` [Intel-gfx] " Uwe Kleine-König
2020-06-11 21:37 ` Uwe Kleine-König
2020-06-12 17:00 ` Hans de Goede
2020-06-12 17:00 ` [Intel-gfx] " Hans de Goede
2020-06-12 17:00 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 12/15] drm/i915: panel: Add get_vbt_pwm_freq() helper Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 13/15] drm/i915: panel: Honor the VBT PWM frequency for devs with an external PWM controller Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 14/15] drm/i915: panel: Honor the VBT PWM min setting " Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:18 ` [PATCH v2 15/15] drm/i915: panel: Use atomic PWM API " Hans de Goede
2020-06-07 18:18 ` [Intel-gfx] " Hans de Goede
2020-06-07 18:18 ` Hans de Goede
2020-06-07 18:28 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for pwm/i915: Convert pwm-crc and i915 driver's PWM code to use the atomic PWM API Patchwork
2020-06-07 18:48 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-06-07 19:44 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
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