From: Chen-Yu Tsai <wens@csie.org>
To: "Jernej Škrabec" <jernej.skrabec@siol.net>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>,
Chen-Yu Tsai <wens@csie.org>, David Airlie <airlied@linux.ie>,
linux-kernel <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Icenowy Zheng <icenowy@aosc.io>,
linux-sunxi <linux-sunxi@googlegroups.com>
Subject: Re: [PATCH 13/17] drm/sun4i: Add DE2 CSC library
Date: Wed, 29 Nov 2017 11:20:15 +0800 [thread overview]
Message-ID: <CAGb2v67+4AmUVSipY2ncwQ1i8PVZmysuZYSQ-uY9+Uk1KU9EgA@mail.gmail.com> (raw)
In-Reply-To: <5439299.3c0LKkSZrY@jernej-laptop>
On Wed, Nov 29, 2017 at 5:43 AM, Jernej Škrabec <jernej.skrabec@siol.net> wrote:
> Hi!
>
> Dne torek, 28. november 2017 ob 21:55:50 CET je Maxime Ripard napisal(a):
>> On Mon, Nov 27, 2017 at 09:57:46PM +0100, Jernej Skrabec wrote:
>> > DE2 have many CSC units - channel input CSC, channel output CSC and
>> > mixer output CSC and maybe more.
>> >
>> > Fortunately, they have all same register layout, only base offsets
>> > differs.
>> >
>> > Add support only for channel output CSC for now.
>> >
>> > Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
>> > ---
>> >
>> > drivers/gpu/drm/sun4i/Makefile | 2 +-
>> > drivers/gpu/drm/sun4i/sun8i_csc.c | 90
>> > +++++++++++++++++++++++++++++++++++++++
>> > drivers/gpu/drm/sun4i/sun8i_csc.h | 36 ++++++++++++++++
>> > 3 files changed, 127 insertions(+), 1 deletion(-)
>> > create mode 100644 drivers/gpu/drm/sun4i/sun8i_csc.c
>> > create mode 100644 drivers/gpu/drm/sun4i/sun8i_csc.h
>> >
>> > diff --git a/drivers/gpu/drm/sun4i/Makefile
>> > b/drivers/gpu/drm/sun4i/Makefile index 70df480792f9..f82cc69ede72 100644
>> > --- a/drivers/gpu/drm/sun4i/Makefile
>> > +++ b/drivers/gpu/drm/sun4i/Makefile
>> > @@ -9,7 +9,7 @@ sun4i-drm-hdmi-y += sun4i_hdmi_enc.o
>> >
>> > sun4i-drm-hdmi-y += sun4i_hdmi_i2c.o
>> > sun4i-drm-hdmi-y += sun4i_hdmi_tmds_clk.o
>> >
>> > -sun8i-mixer-y += sun8i_mixer.o sun8i_layer.o sun8i_scaler.o
>> > +sun8i-mixer-y += sun8i_mixer.o sun8i_layer.o sun8i_scaler.o
> sun8i_csc.o
>>
>> Please wrap that line.
>>
>> > sun4i-tcon-y += sun4i_crtc.o
>> > sun4i-tcon-y += sun4i_dotclock.o
>> >
>> > diff --git a/drivers/gpu/drm/sun4i/sun8i_csc.c
>> > b/drivers/gpu/drm/sun4i/sun8i_csc.c new file mode 100644
>> > index 000000000000..d48c28f8d568
>> > --- /dev/null
>> > +++ b/drivers/gpu/drm/sun4i/sun8i_csc.c
>> > @@ -0,0 +1,90 @@
>> > +/*
>> > + * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net>
>> > + *
>> > + * This program is free software; you can redistribute it and/or
>> > + * modify it under the terms of the GNU General Public License as
>> > + * published by the Free Software Foundation; either version 2 of
>> > + * the License, or (at your option) any later version.
>> > + */
>> > +
>> > +#include "sun8i_csc.h"
>> > +
>> > +static const u32 ccsc_base[2][2] = {
>> > + {CCSC00_OFFSET, CCSC01_OFFSET},
>> > + {CCSC10_OFFSET, CCSC11_OFFSET},
>> > +};
>> > +
>> > +/*
>> > + * Factors are in two's complement format, 10 bits for fractinal part.
>> > + * First tree values in each line are multiplication factor and last
>> > + * value is constant, which is added at the end.
>> > + */
>> > +static const u32 yuv2rgb[] = {
>> > + 0x000004A8, 0x00000000, 0x00000662, 0xFFFC845A,
>> > + 0x000004A8, 0xFFFFFE6F, 0xFFFFFCBF, 0x00021DF4,
>> > + 0x000004A8, 0x00000813, 0x00000000, 0xFFFBAC4A,
>> > +};
>> > +
>> > +static const u32 yvu2rgb[] = {
>> > + 0x000004A8, 0x00000662, 0x00000000, 0xFFFC845A,
>> > + 0x000004A8, 0xFFFFFCBF, 0xFFFFFE6F, 0x00021DF4,
>> > + 0x000004A8, 0x00000000, 0x00000813, 0xFFFBAC4A,
>> > +};
>> > +
>> > +static void sun8i_csc_set_coefficients(struct regmap *map, u32 base,
>> > + enum sun8i_csc_mode mode)
>> > +{
>> > + const u32 *table;
>> > + int i, data;
>> > +
>> > + switch (mode) {
>> > + case SUN8I_CSC_MODE_YUV2RGB:
>> > + table = yuv2rgb;
>> > + break;
>> > + case SUN8I_CSC_MODE_YVU2RGB:
>> > + table = yvu2rgb;
>> > + break;
>> > + default:
>> > + WARN(1, "Wrong CSC mode specified.");
>>
>> A hard warn is a bit overkill here. What about a dev_warn?
>
> dev_warn requires device, which is not available here and seems a bit overkill
> to have it as parameter just to print warning. What about DRM_WARN()?
dev_warn is just pr_warn that prefixes the device name to the message.
Not sure about DRM_WARN. If it's anything like DRM_DEBUG* then it probably
prefixes the function name.
ChenYu
next prev parent reply other threads:[~2017-11-29 3:20 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-27 20:57 [PATCH 00/17] Improve DE2 support Jernej Skrabec
2017-11-27 20:57 ` [PATCH 01/17] drm/sun4i: Refactor DE2 code Jernej Skrabec
2017-11-28 15:54 ` Maxime Ripard
2017-11-28 18:49 ` Jernej Škrabec
2017-11-27 20:57 ` [PATCH 02/17] drm/sun4i: Start using layer id in DE2 driver Jernej Skrabec
2017-11-28 20:21 ` Maxime Ripard
2017-11-27 20:57 ` [PATCH 03/17] drm/sun4i: Add constraints checking to " Jernej Skrabec
2017-11-27 20:57 ` [PATCH 04/17] drm/sun4i: Use values calculated by atomic check Jernej Skrabec
2017-11-27 20:57 ` [PATCH 05/17] drm/sun4i: Reorder some code in DE2 Jernej Skrabec
2017-11-28 20:26 ` Maxime Ripard
2017-11-27 20:57 ` [PATCH 06/17] drm/sun4i: Add multi plane support to DE2 driver Jernej Skrabec
2017-11-27 20:57 ` [PATCH 07/17] drm/sun4i: Add support for all HW supported DE2 RGB formats Jernej Skrabec
2017-11-27 20:57 ` [PATCH 08/17] drm/sun4i: Add support for DE2 VI planes Jernej Skrabec
2017-11-28 21:00 ` Maxime Ripard
2017-11-28 21:28 ` Jernej Škrabec
2017-11-29 22:01 ` Jernej Škrabec
2017-11-27 20:57 ` [PATCH 09/17] drm/sun4i: Add scaler library for DE2 Jernej Skrabec
2017-11-28 20:40 ` Maxime Ripard
2017-11-27 20:57 ` [PATCH 10/17] drm/sun4i: Add scaler configuration to DE2 mixers Jernej Skrabec
2017-11-28 20:31 ` Maxime Ripard
2017-11-27 20:57 ` [PATCH 11/17] drm/sun4i: Wire in DE2 scaler support Jernej Skrabec
2017-11-28 20:42 ` Maxime Ripard
2017-11-29 21:48 ` [linux-sunxi] " Julian Calaby
2017-11-29 21:59 ` Jernej Škrabec
2017-11-27 20:57 ` [PATCH 12/17] drm/sun4i: Add CCSC property to DE2 configuration Jernej Skrabec
2017-11-28 12:02 ` Icenowy Zheng
2017-11-28 20:43 ` Maxime Ripard
2017-11-28 20:44 ` Maxime Ripard
2017-11-27 20:57 ` [PATCH 13/17] drm/sun4i: Add DE2 CSC library Jernej Skrabec
2017-11-28 20:55 ` Maxime Ripard
2017-11-28 21:43 ` Jernej Škrabec
2017-11-29 3:20 ` Chen-Yu Tsai [this message]
2017-11-29 15:27 ` Maxime Ripard
2017-11-27 20:57 ` [PATCH 14/17] drm/sun4i: Add DE2 definitions for YUV formats Jernej Skrabec
2017-11-27 20:57 ` [PATCH 15/17] drm/sun4i: Expand DE2 scaler lib with YUV support Jernej Skrabec
2017-11-27 20:57 ` [PATCH 16/17] drm/sun4i: Wire in DE2 " Jernej Skrabec
2017-11-27 20:57 ` [PATCH 17/17] [DO NOT MERGE]drm/sun4i: Change zpos of bottom VI plane Jernej Skrabec
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