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build/patch/kernel/odroidc2-next/0055-drm-meson-Convert-existing-documentation-to-actual-k.patch
Igor Pecovnik b779446b58 Odroid C2 NEXT and DEV branches, need testing
2017-05-21 18:44:19 +02:00

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From f2dfb958c4d11d201619c9f5568de783c87d7ea0 Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com>
Date: Fri, 3 Mar 2017 11:02:40 +0100
Subject: [PATCH 55/93] drm/meson: Convert existing documentation to actual
kerneldoc
---
drivers/gpu/drm/meson/meson_canvas.c | 4 +++-
drivers/gpu/drm/meson/meson_drv.c | 5 +++--
drivers/gpu/drm/meson/meson_dw_hdmi.c | 25 +++++++++++++++++--------
drivers/gpu/drm/meson/meson_vclk.c | 22 +++++++++++++++-------
drivers/gpu/drm/meson/meson_venc.c | 25 ++++++++++++++++---------
drivers/gpu/drm/meson/meson_viu.c | 6 +++++-
drivers/gpu/drm/meson/meson_vpp.c | 8 ++++++--
7 files changed, 65 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/meson/meson_canvas.c b/drivers/gpu/drm/meson/meson_canvas.c
index 4109e36..08f6073 100644
--- a/drivers/gpu/drm/meson/meson_canvas.c
+++ b/drivers/gpu/drm/meson/meson_canvas.c
@@ -24,7 +24,9 @@
#include "meson_canvas.h"
#include "meson_registers.h"
-/*
+/**
+ * DOC: Canvas
+ *
* CANVAS is a memory zone where physical memory frames information
* are stored for the VIU to scanout.
*/
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 4b506d0..4c3422e 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -52,13 +52,14 @@
#define DRIVER_NAME "meson"
#define DRIVER_DESC "Amlogic Meson DRM driver"
-/*
- * Video Processing Unit
+/**
+ * DOC: Video Processing Unit
*
* VPU Handles the Global Video Processing, it includes management of the
* clocks gates, blocks reset lines and power domains.
*
* What is missing :
+ *
* - Full reset of entire video processing HW blocks
* - Scaling and setup of the VPU clock
* - Bus clock gates
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index 8851dcb..7b86eb7 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -42,18 +42,25 @@
#define DRIVER_NAME "meson-dw-hdmi"
#define DRIVER_DESC "Amlogic Meson HDMI-TX DRM driver"
-/*
+/**
+ * DOC: HDMI Output
+ *
* HDMI Output is composed of :
+ *
* - A Synopsys DesignWare HDMI Controller IP
* - A TOP control block controlling the Clocks and PHY
* - A custom HDMI PHY in order convert video to TMDS signal
- * ___________________________________
- * | HDMI TOP |<= HPD
- * |___________________________________|
- * | | |
- * | Synopsys HDMI | HDMI PHY |=> TMDS
- * | Controller |________________|
- * |___________________________________|<=> DDC
+ *
+ * .. code::
+ *
+ * ___________________________________
+ * | HDMI TOP |<= HPD
+ * |___________________________________|
+ * | | |
+ * | Synopsys HDMI | HDMI PHY |=> TMDS
+ * | Controller |________________|
+ * |___________________________________|<=> DDC
+ *
*
* The HDMI TOP block only supports HPD sensing.
* The Synopsys HDMI Controller interrupt is routed
@@ -78,6 +85,7 @@
* audio source interfaces.
*
* We handle the following features :
+ *
* - HPD Rise & Fall interrupt
* - HDMI Controller Interrupt
* - HDMI PHY Init for 480i to 1080p60
@@ -85,6 +93,7 @@
* - VENC Mode setup for 480i to 1080p60
*
* What is missing :
+ *
* - PHY, Clock and Mode setup for 2k && 4k modes
* - SDDC Scrambling mode for HDMI 2.0a
* - HDCP Setup
diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
index 3731479..4767704 100644
--- a/drivers/gpu/drm/meson/meson_vclk.c
+++ b/drivers/gpu/drm/meson/meson_vclk.c
@@ -23,21 +23,29 @@
#include "meson_drv.h"
#include "meson_vclk.h"
-/*
+/**
+ * DOC: Video Clocks
+ *
* VCLK is the "Pixel Clock" frequency generator from a dedicated PLL.
* We handle the following encodings :
+ *
* - CVBS 27MHz generator via the VCLK2 to the VENCI and VDAC blocks
* - HDMI Pixel Clocks generation
+ *
* What is missing :
+ *
* - Genenate Pixel clocks for 2K/4K 10bit formats
*
* Clock generator scheme :
- * __________ _________ _____
- * | | | | | |--ENCI
- * | HDMI PLL |-| PLL_DIV |--- VCLK--| |--ENCL
- * |__________| |_________| \ | MUX |--ENCP
- * --VCLK2-| |--VDAC
- * |_____|--HDMI-TX
+ *
+ * .. code::
+ *
+ * __________ _________ _____
+ * | | | | | |--ENCI
+ * | HDMI PLL |-| PLL_DIV |--- VCLK--| |--ENCL
+ * |__________| |_________| \ | MUX |--ENCP
+ * --VCLK2-| |--VDAC
+ * |_____|--HDMI-TX
*
* Final clocks can take input for either VCLK or VCLK2, but
* VCLK is the preferred path for HDMI clocking and VCLK2 is the
diff --git a/drivers/gpu/drm/meson/meson_venc.c b/drivers/gpu/drm/meson/meson_venc.c
index 31dc275..9509017 100644
--- a/drivers/gpu/drm/meson/meson_venc.c
+++ b/drivers/gpu/drm/meson/meson_venc.c
@@ -26,26 +26,33 @@
#include "meson_vclk.h"
#include "meson_registers.h"
-/*
+/**
+ * DOC: Video Encoder
+ *
* VENC Handle the pixels encoding to the output formats.
* We handle the following encodings :
+ *
* - CVBS Encoding via the ENCI encoder and VDAC digital to analog converter
* - TMDS/HDMI Encoding via ENCI_DIV and ENCP
* - Setup of more clock rates for HDMI modes
*
* What is missing :
+ *
* - LCD Panel encoding via ENCL
* - TV Panel encoding via ENCT
*
* VENC paths :
- * _____ _____ ____________________
- * vd1---| |-| | | VENC /---------|----VDAC
- * vd2---| VIU |-| VPP |-|-----ENCI/-ENCI_DVI-|\
- * osd1--| |-| | | \ | X--HDMI-TX
- * osd2--|_____|-|_____| | |\-ENCP--ENCP_DVI-|/
- * | | |
- * | \--ENCL-----------|----LVDS
- * |____________________|
+ *
+ * .. code::
+ *
+ * _____ _____ ____________________
+ * vd1---| |-| | | VENC /---------|----VDAC
+ * vd2---| VIU |-| VPP |-|-----ENCI/-ENCI_DVI-|-|
+ * osd1--| |-| | | \ | X--HDMI-TX
+ * osd2--|_____|-|_____| | |\-ENCP--ENCP_DVI-|-|
+ * | | |
+ * | \--ENCL-----------|----LVDS
+ * |____________________|
*
* The ENCI is designed for PAl or NTSC encoding and can go through the VDAC
* directly for CVBS encoding or through the ENCI_DVI encoder for HDMI.
diff --git a/drivers/gpu/drm/meson/meson_viu.c b/drivers/gpu/drm/meson/meson_viu.c
index a6de8ba..6bcfa52 100644
--- a/drivers/gpu/drm/meson/meson_viu.c
+++ b/drivers/gpu/drm/meson/meson_viu.c
@@ -28,9 +28,12 @@
#include "meson_canvas.h"
#include "meson_registers.h"
-/*
+/**
+ * DOC: Video Input Unit
+ *
* VIU Handles the Pixel scanout and the basic Colorspace conversions
* We handle the following features :
+ *
* - OSD1 RGB565/RGB888/xRGB8888 scanout
* - RGB conversion to x/cb/cr
* - Progressive or Interlace buffer scanout
@@ -38,6 +41,7 @@
* - HDR OSD matrix for GXL/GXM
*
* What is missing :
+ *
* - BGR888/xBGR8888/BGRx8888/BGRx8888 modes
* - YUV4:2:2 Y0CbY1Cr scanout
* - Conversion to YUV 4:4:4 from 4:2:2 input
diff --git a/drivers/gpu/drm/meson/meson_vpp.c b/drivers/gpu/drm/meson/meson_vpp.c
index 671909d..27356f8 100644
--- a/drivers/gpu/drm/meson/meson_vpp.c
+++ b/drivers/gpu/drm/meson/meson_vpp.c
@@ -25,16 +25,20 @@
#include "meson_vpp.h"
#include "meson_registers.h"
-/*
+/**
+ * DOC: Video Post Processing
+ *
* VPP Handles all the Post Processing after the Scanout from the VIU
* We handle the following post processings :
- * - Postblend : Blends the OSD1 only
+ *
+ * - Postblend, Blends the OSD1 only
* We exclude OSD2, VS1, VS1 and Preblend output
* - Vertical OSD Scaler for OSD1 only, we disable vertical scaler and
* use it only for interlace scanout
* - Intermediate FIFO with default Amlogic values
*
* What is missing :
+ *
* - Preblend for video overlay pre-scaling
* - OSD2 support for cursor framebuffer
* - Video pre-scaling before postblend
--
1.9.1
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