mirror of
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4a83c26a1d
Rename "GEM CMA" helpers to "GEM DMA" helpers - considering the
hierarchy of APIs (mm/cma -> dma -> gem dma) calling them "GEM
DMA" seems to be more applicable.
Besides that, commit e57924d4ae ("drm/doc: Task to rename CMA helpers")
requests to rename the CMA helpers and implies that people seem to be
confused about the naming.
In order to do this renaming the following script was used:
```
#!/bin/bash
DIRS="drivers/gpu include/drm Documentation/gpu"
REGEX_SYM_UPPER="[0-9A-Z_\-]"
REGEX_SYM_LOWER="[0-9a-z_\-]"
REGEX_GREP_UPPER="(${REGEX_SYM_UPPER}*)(GEM)_CMA_(${REGEX_SYM_UPPER}*)"
REGEX_GREP_LOWER="(${REGEX_SYM_LOWER}*)(gem)_cma_(${REGEX_SYM_LOWER}*)"
REGEX_SED_UPPER="s/${REGEX_GREP_UPPER}/\1\2_DMA_\3/g"
REGEX_SED_LOWER="s/${REGEX_GREP_LOWER}/\1\2_dma_\3/g"
# Find all upper case 'CMA' symbols and replace them with 'DMA'.
for ff in $(grep -REHl "${REGEX_GREP_UPPER}" $DIRS)
do
sed -i -E "$REGEX_SED_UPPER" $ff
done
# Find all lower case 'cma' symbols and replace them with 'dma'.
for ff in $(grep -REHl "${REGEX_GREP_LOWER}" $DIRS)
do
sed -i -E "$REGEX_SED_LOWER" $ff
done
# Replace all occurrences of 'CMA' / 'cma' in comments and
# documentation files with 'DMA' / 'dma'.
for ff in $(grep -RiHl " cma " $DIRS)
do
sed -i -E "s/ cma / dma /g" $ff
sed -i -E "s/ CMA / DMA /g" $ff
done
# Rename all 'cma_obj's to 'dma_obj'.
for ff in $(grep -RiHl "cma_obj" $DIRS)
do
sed -i -E "s/cma_obj/dma_obj/g" $ff
done
```
Only a few more manual modifications were needed, e.g. reverting the
following modifications in some DRM Kconfig files
- select CMA if HAVE_DMA_CONTIGUOUS
+ select DMA if HAVE_DMA_CONTIGUOUS
as well as manually picking the occurrences of 'CMA'/'cma' in comments and
documentation which relate to "GEM CMA", but not "FB CMA".
Also drivers/gpu/drm/Makefile was fixed up manually after renaming
drm_gem_cma_helper.c to drm_gem_dma_helper.c.
This patch is compile-time tested building a x86_64 kernel with
`make allyesconfig && make drivers/gpu/drm`.
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> #drivers/gpu/drm/arm
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220802000405.949236-4-dakr@redhat.com
294 lines
6.4 KiB
C
294 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* DRM driver for the HX8357D LCD controller
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*
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* Copyright 2018 Broadcom
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* Copyright 2018 David Lechner <david@lechnology.com>
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* Copyright 2016 Noralf Trønnes
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* Copyright (C) 2015 Adafruit Industries
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* Copyright (C) 2013 Christian Vogelgsang
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*/
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#include <linux/backlight.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/property.h>
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#include <linux/spi/spi.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_gem_atomic_helper.h>
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#include <drm/drm_gem_dma_helper.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_mipi_dbi.h>
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#include <drm/drm_modeset_helper.h>
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#include <video/mipi_display.h>
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#define HX8357D_SETOSC 0xb0
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#define HX8357D_SETPOWER 0xb1
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#define HX8357D_SETRGB 0xb3
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#define HX8357D_SETCYC 0xb3
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#define HX8357D_SETCOM 0xb6
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#define HX8357D_SETEXTC 0xb9
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#define HX8357D_SETSTBA 0xc0
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#define HX8357D_SETPANEL 0xcc
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#define HX8357D_SETGAMMA 0xe0
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#define HX8357D_MADCTL_MY 0x80
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#define HX8357D_MADCTL_MX 0x40
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#define HX8357D_MADCTL_MV 0x20
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#define HX8357D_MADCTL_ML 0x10
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#define HX8357D_MADCTL_RGB 0x00
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#define HX8357D_MADCTL_BGR 0x08
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#define HX8357D_MADCTL_MH 0x04
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static void yx240qv29_enable(struct drm_simple_display_pipe *pipe,
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struct drm_crtc_state *crtc_state,
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struct drm_plane_state *plane_state)
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{
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struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
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struct mipi_dbi *dbi = &dbidev->dbi;
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u8 addr_mode;
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int ret, idx;
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if (!drm_dev_enter(pipe->crtc.dev, &idx))
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return;
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DRM_DEBUG_KMS("\n");
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ret = mipi_dbi_poweron_conditional_reset(dbidev);
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if (ret < 0)
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goto out_exit;
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if (ret == 1)
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goto out_enable;
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/* setextc */
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mipi_dbi_command(dbi, HX8357D_SETEXTC, 0xFF, 0x83, 0x57);
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msleep(150);
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/* setRGB which also enables SDO */
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mipi_dbi_command(dbi, HX8357D_SETRGB, 0x00, 0x00, 0x06, 0x06);
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/* -1.52V */
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mipi_dbi_command(dbi, HX8357D_SETCOM, 0x25);
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/* Normal mode 70Hz, Idle mode 55 Hz */
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mipi_dbi_command(dbi, HX8357D_SETOSC, 0x68);
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/* Set Panel - BGR, Gate direction swapped */
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mipi_dbi_command(dbi, HX8357D_SETPANEL, 0x05);
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mipi_dbi_command(dbi, HX8357D_SETPOWER,
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0x00, /* Not deep standby */
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0x15, /* BT */
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0x1C, /* VSPR */
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0x1C, /* VSNR */
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0x83, /* AP */
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0xAA); /* FS */
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mipi_dbi_command(dbi, HX8357D_SETSTBA,
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0x50, /* OPON normal */
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0x50, /* OPON idle */
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0x01, /* STBA */
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0x3C, /* STBA */
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0x1E, /* STBA */
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0x08); /* GEN */
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mipi_dbi_command(dbi, HX8357D_SETCYC,
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0x02, /* NW 0x02 */
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0x40, /* RTN */
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0x00, /* DIV */
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0x2A, /* DUM */
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0x2A, /* DUM */
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0x0D, /* GDON */
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0x78); /* GDOFF */
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mipi_dbi_command(dbi, HX8357D_SETGAMMA,
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0x02,
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0x0A,
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0x11,
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0x1d,
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0x23,
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0x35,
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0x41,
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0x4b,
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0x4b,
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0x42,
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0x3A,
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0x27,
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0x1B,
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0x08,
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0x09,
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0x03,
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0x02,
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0x0A,
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0x11,
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0x1d,
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0x23,
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0x35,
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0x41,
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0x4b,
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0x4b,
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0x42,
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0x3A,
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0x27,
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0x1B,
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0x08,
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0x09,
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0x03,
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0x00,
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0x01);
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/* 16 bit */
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mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
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MIPI_DCS_PIXEL_FMT_16BIT);
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/* TE off */
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mipi_dbi_command(dbi, MIPI_DCS_SET_TEAR_ON, 0x00);
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/* tear line */
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mipi_dbi_command(dbi, MIPI_DCS_SET_TEAR_SCANLINE, 0x00, 0x02);
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/* Exit Sleep */
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mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
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msleep(150);
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/* display on */
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mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
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usleep_range(5000, 7000);
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out_enable:
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switch (dbidev->rotation) {
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default:
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addr_mode = HX8357D_MADCTL_MX | HX8357D_MADCTL_MY;
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break;
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case 90:
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addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MY;
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break;
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case 180:
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addr_mode = 0;
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break;
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case 270:
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addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MX;
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break;
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}
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mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
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mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
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out_exit:
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drm_dev_exit(idx);
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}
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static const struct drm_simple_display_pipe_funcs hx8357d_pipe_funcs = {
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.enable = yx240qv29_enable,
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.disable = mipi_dbi_pipe_disable,
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.update = mipi_dbi_pipe_update,
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};
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static const struct drm_display_mode yx350hv15_mode = {
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DRM_SIMPLE_MODE(320, 480, 60, 75),
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};
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DEFINE_DRM_GEM_DMA_FOPS(hx8357d_fops);
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static const struct drm_driver hx8357d_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
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.fops = &hx8357d_fops,
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DRM_GEM_DMA_DRIVER_OPS_VMAP,
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.debugfs_init = mipi_dbi_debugfs_init,
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.name = "hx8357d",
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.desc = "HX8357D",
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.date = "20181023",
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.major = 1,
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.minor = 0,
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};
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static const struct of_device_id hx8357d_of_match[] = {
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{ .compatible = "adafruit,yx350hv15" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, hx8357d_of_match);
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static const struct spi_device_id hx8357d_id[] = {
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{ "yx350hv15", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(spi, hx8357d_id);
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static int hx8357d_probe(struct spi_device *spi)
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{
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struct device *dev = &spi->dev;
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struct mipi_dbi_dev *dbidev;
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struct drm_device *drm;
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struct gpio_desc *dc;
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u32 rotation = 0;
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int ret;
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dbidev = devm_drm_dev_alloc(dev, &hx8357d_driver,
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struct mipi_dbi_dev, drm);
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if (IS_ERR(dbidev))
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return PTR_ERR(dbidev);
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drm = &dbidev->drm;
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dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW);
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if (IS_ERR(dc))
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return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n");
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dbidev->backlight = devm_of_find_backlight(dev);
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if (IS_ERR(dbidev->backlight))
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return PTR_ERR(dbidev->backlight);
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device_property_read_u32(dev, "rotation", &rotation);
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ret = mipi_dbi_spi_init(spi, &dbidev->dbi, dc);
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if (ret)
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return ret;
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ret = mipi_dbi_dev_init(dbidev, &hx8357d_pipe_funcs, &yx350hv15_mode, rotation);
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if (ret)
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return ret;
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drm_mode_config_reset(drm);
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ret = drm_dev_register(drm, 0);
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if (ret)
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return ret;
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spi_set_drvdata(spi, drm);
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drm_fbdev_generic_setup(drm, 0);
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return 0;
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}
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static void hx8357d_remove(struct spi_device *spi)
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{
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struct drm_device *drm = spi_get_drvdata(spi);
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drm_dev_unplug(drm);
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drm_atomic_helper_shutdown(drm);
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}
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static void hx8357d_shutdown(struct spi_device *spi)
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{
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drm_atomic_helper_shutdown(spi_get_drvdata(spi));
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}
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static struct spi_driver hx8357d_spi_driver = {
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.driver = {
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.name = "hx8357d",
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.of_match_table = hx8357d_of_match,
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},
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.id_table = hx8357d_id,
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.probe = hx8357d_probe,
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.remove = hx8357d_remove,
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.shutdown = hx8357d_shutdown,
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};
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module_spi_driver(hx8357d_spi_driver);
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MODULE_DESCRIPTION("HX8357D DRM driver");
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MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
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MODULE_LICENSE("GPL");
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