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Message-ID: <0856a87c-9f7f-41c8-a35b-49d90094e5b1@gmail.com>
Date: Thu, 7 Aug 2025 21:33:49 +0300
From: Eslam Khafagy <eslam.medhat1993@...il.com>
To: Manikandan.M@...rochip.com
Cc: skhan@...uxfoundation.com, Dharma.B@...rochip.com,
maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de,
airlied@...il.com, simona@...ll.ch, Nicolas.Ferre@...rochip.com,
alexandre.belloni@...tlin.com, claudiu.beznea@...on.dev,
dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] drm: atmel-hlcdc: replace dev_* print funtions
with drm_* variants
On 8/7/25 10:05, Manikandan.M@...rochip.com wrote:
> Hi Eslam Khafagy,
>
> On 07/08/25 12:00 am, Eslam Khafagy wrote:
>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>>
>> According to documentation[1] drm_* variants are preferred over dev_*
>> print functions.
>>
>> [1] https://docs.kernel.org/gpu/todo.html#convert-logging-to-drm-functions-with-drm-device-parameter
>>
>> v1->v2
>> replace dev_dbg with drm_dbg in atmel_hlcdc_plane.c
> The change logs should be placed after Signed-off-by and below a
> separate 3 dash lines.
ok
> IMO
> The commit message can be -
> 'Update the Atmel HLCDC code to use DRM print macros drm_*() instead of
> dev_warn() and dev_err(). This change ensures consistency with DRM
> subsystem logging conventions [1].
>
> [1]
> https://docs.kernel.org/gpu/todo.html#convert-logging-to-drm-functions-with-drm-device-parameter'
yes it's better . thanks.
>> Signed-off-by: Eslam Khafagy <eslam.medhat1993@...il.com>
>> ---
>> .../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 20 +++++++++----------
>> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 14 ++++++-------
>> .../gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 2 +-
>> .../gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c | 6 +++---
>> 4 files changed, 21 insertions(+), 21 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
>> index 0f7ffb3ced20..da94ab0540bb 100644
>> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
>> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
>> @@ -215,32 +215,32 @@ static void atmel_hlcdc_crtc_atomic_disable(struct drm_crtc *c,
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> !(status & ATMEL_XLCDC_CM),
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register CMSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register CMSTS timeout\n");
> The files atmel_hlcdc_crtc.c and atmel_hlcdc_output.c failes to compile
> due to missing headers for drm_(warn/err) macros.
yes. thanks for pointing this out. i was already planning for a fix
today in v3.
>> regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_XLCDC_SD);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> status & ATMEL_XLCDC_SD,
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register SDSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register SDSTS timeout\n");
>> }
>>
>> regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_DISP);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> !(status & ATMEL_HLCDC_DISP),
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register DISPSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register DISPSTS timeout\n");
>>
>> regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_SYNC);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> !(status & ATMEL_HLCDC_SYNC),
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register LCDSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register LCDSTS timeout\n");
>>
>> regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_PIXEL_CLK);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> !(status & ATMEL_HLCDC_PIXEL_CLK),
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register CLKSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register CLKSTS timeout\n");
>>
>> clk_disable_unprepare(crtc->dc->hlcdc->sys_clk);
>> pinctrl_pm_select_sleep_state(dev->dev);
>> @@ -269,32 +269,32 @@ static void atmel_hlcdc_crtc_atomic_enable(struct drm_crtc *c,
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> status & ATMEL_HLCDC_PIXEL_CLK,
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register CLKSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register CLKSTS timeout\n");
>>
>> regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_SYNC);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> status & ATMEL_HLCDC_SYNC,
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register LCDSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register LCDSTS timeout\n");
>>
>> regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_DISP);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> status & ATMEL_HLCDC_DISP,
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register DISPSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register DISPSTS timeout\n");
>>
>> if (crtc->dc->desc->is_xlcdc) {
>> regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_XLCDC_CM);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> status & ATMEL_XLCDC_CM,
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register CMSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register CMSTS timeout\n");
>>
>> regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_XLCDC_SD);
>> if (regmap_read_poll_timeout(regmap, ATMEL_HLCDC_SR, status,
>> !(status & ATMEL_XLCDC_SD),
>> 10, 1000))
>> - dev_warn(dev->dev, "Atmel LCDC status register SDSTS timeout\n");
>> + drm_warn(dev, "Atmel LCDC status register SDSTS timeout\n");
>> }
>>
>> pm_runtime_put_sync(dev->dev);
>> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
>> index fa8ad94e431a..acb017a2486b 100644
>> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
>> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
>> @@ -724,19 +724,19 @@ static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
>>
>> ret = atmel_hlcdc_create_outputs(dev);
>> if (ret) {
>> - dev_err(dev->dev, "failed to create HLCDC outputs: %d\n", ret);
>> + drm_err(dev, "failed to create HLCDC outputs: %d\n", ret);
>> return ret;
>> }
>>
>> ret = atmel_hlcdc_create_planes(dev);
>> if (ret) {
>> - dev_err(dev->dev, "failed to create planes: %d\n", ret);
>> + drm_err(dev, "failed to create planes: %d\n", ret);
>> return ret;
>> }
>>
>> ret = atmel_hlcdc_crtc_create(dev);
>> if (ret) {
>> - dev_err(dev->dev, "failed to create crtc\n");
>> + drm_err(dev, "failed to create crtc\n");
>> return ret;
>> }
>>
>> @@ -778,7 +778,7 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev)
>>
>> ret = clk_prepare_enable(dc->hlcdc->periph_clk);
>> if (ret) {
>> - dev_err(dev->dev, "failed to enable periph_clk\n");
>> + drm_err(dev, "failed to enable periph_clk\n");
>> return ret;
>> }
>>
>> @@ -786,13 +786,13 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev)
>>
>> ret = drm_vblank_init(dev, 1);
>> if (ret < 0) {
>> - dev_err(dev->dev, "failed to initialize vblank\n");
>> + drm_err(dev, "failed to initialize vblank\n");
>> goto err_periph_clk_disable;
>> }
>>
>> ret = atmel_hlcdc_dc_modeset_init(dev);
>> if (ret < 0) {
>> - dev_err(dev->dev, "failed to initialize mode setting\n");
>> + drm_err(dev, "failed to initialize mode setting\n");
>> goto err_periph_clk_disable;
>> }
>>
>> @@ -802,7 +802,7 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev)
>> ret = atmel_hlcdc_dc_irq_install(dev, dc->hlcdc->irq);
>> pm_runtime_put_sync(dev->dev);
>> if (ret < 0) {
>> - dev_err(dev->dev, "failed to install IRQ handler\n");
>> + drm_err(dev, "failed to install IRQ handler\n");
>> goto err_periph_clk_disable;
>> }
>>
>> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
>> index 50fee6a93964..945a475c33ac 100644
>> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
>> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c
>> @@ -92,7 +92,7 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
>> output->bus_fmt = atmel_hlcdc_of_bus_fmt(ep);
>> of_node_put(ep);
>> if (output->bus_fmt < 0) {
>> - dev_err(dev->dev, "endpoint %d: invalid bus width\n", endpoint);
>> + drm_err(dev, "endpoint %d: invalid bus width\n", endpoint);
>> return -EINVAL;
>> }
>>
>> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
>> index 4a7ba0918eca..817284509b57 100644
>> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
>> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
>> @@ -1034,7 +1034,7 @@ static void atmel_hlcdc_irq_dbg(struct atmel_hlcdc_plane *plane,
>> if (isr &
>> (ATMEL_HLCDC_LAYER_OVR_IRQ(0) | ATMEL_HLCDC_LAYER_OVR_IRQ(1) |
>> ATMEL_HLCDC_LAYER_OVR_IRQ(2)))
>> - dev_dbg(plane->base.dev->dev, "overrun on plane %s\n",
>> + drm_dbg(plane->base.dev, "overrun on plane %s\n",
>> desc->name);
>> }
>>
>> @@ -1051,7 +1051,7 @@ static void atmel_xlcdc_irq_dbg(struct atmel_hlcdc_plane *plane,
>> if (isr &
>> (ATMEL_XLCDC_LAYER_OVR_IRQ(0) | ATMEL_XLCDC_LAYER_OVR_IRQ(1) |
>> ATMEL_XLCDC_LAYER_OVR_IRQ(2)))
>> - dev_dbg(plane->base.dev->dev, "overrun on plane %s\n",
>> + drm_dbg(plane->base.dev, "overrun on plane %s\n",
>> desc->name);
>> }
>>
>> @@ -1140,7 +1140,7 @@ static void atmel_hlcdc_plane_reset(struct drm_plane *p)
>> if (state) {
>> if (atmel_hlcdc_plane_alloc_dscrs(p, state)) {
>> kfree(state);
>> - dev_err(p->dev->dev,
>> + drm_err(p->dev,
>> "Failed to allocate initial plane state\n");
>> return;
>> }
>> --
>> 2.43.0
>>
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