forked from mirrors/linux
drm/panel: Add driver for Sony ACX424AKP panel
The Sony ACX424AKP is a command/videomode DSI panel for mobile devices. It is used on the ST-Ericsson HREF520 reference design. We support video mode by default, but it is possible to switch the panel into command mode by using the bool property "dsi-command-mode". Cc: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200109072815.334867-1-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij
Sam Ravnborg
parent
5d50bd440b
commit
8152c2bfd7
4 changed files with 568 additions and 0 deletions
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@ -5357,6 +5357,12 @@ S: Maintained
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F: drivers/gpu/drm/tiny/st7735r.c
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F: Documentation/devicetree/bindings/display/sitronix,st7735r.txt
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DRM DRIVER FOR SONY ACX424AKP PANELS
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M: Linus Walleij <linus.walleij@linaro.org>
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T: git git://anongit.freedesktop.org/drm/drm-misc
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S: Maintained
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F: drivers/gpu/drm/panel/panel-sony-acx424akp.c
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DRM DRIVER FOR ST-ERICSSON MCDE
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M: Linus Walleij <linus.walleij@linaro.org>
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T: git git://anongit.freedesktop.org/drm/drm-misc
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@ -338,6 +338,17 @@ config DRM_PANEL_SITRONIX_ST7789V
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Say Y here if you want to enable support for the Sitronix
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ST7789V controller for 240x320 LCD panels
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config DRM_PANEL_SONY_ACX424AKP
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tristate "Sony ACX424AKP DSI command mode panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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select VIDEOMODE_HELPERS
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help
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Say Y here if you want to enable the Sony ACX424 display
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panel. This panel supports DSI in both command and video
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mode.
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config DRM_PANEL_SONY_ACX565AKM
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tristate "Sony ACX565AKM panel"
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depends on GPIOLIB && OF && SPI
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@ -35,6 +35,7 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
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obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
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obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
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obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
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obj-$(CONFIG_DRM_PANEL_SONY_ACX424AKP) += panel-sony-acx424akp.o
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obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
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obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
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obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
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550
drivers/gpu/drm/panel/panel-sony-acx424akp.c
Normal file
550
drivers/gpu/drm/panel/panel-sony-acx424akp.c
Normal file
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@ -0,0 +1,550 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* MIPI-DSI Sony ACX424AKP panel driver. This is a 480x864
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* AMOLED panel with a command-only DSI interface.
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*
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* Copyright (C) Linaro Ltd. 2019
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* Author: Linus Walleij
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* Based on code and know-how from Marcus Lorentzon
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* Copyright (C) ST-Ericsson SA 2010
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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/of.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_print.h>
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#define ACX424_DCS_READ_ID1 0xDA
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#define ACX424_DCS_READ_ID2 0xDB
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#define ACX424_DCS_READ_ID3 0xDC
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#define ACX424_DCS_SET_MDDI 0xAE
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/*
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* Sony seems to use vendor ID 0x81
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*/
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#define DISPLAY_SONY_ACX424AKP_ID1 0x811b
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#define DISPLAY_SONY_ACX424AKP_ID2 0x811a
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/*
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* The third ID looks like a bug, vendor IDs begin at 0x80
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* and panel 00 ... seems like default values.
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*/
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#define DISPLAY_SONY_ACX424AKP_ID3 0x8000
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struct acx424akp {
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struct drm_panel panel;
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struct device *dev;
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struct backlight_device *bl;
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struct regulator *supply;
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struct gpio_desc *reset_gpio;
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bool video_mode;
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};
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static const struct drm_display_mode sony_acx424akp_vid_mode = {
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.clock = 330000,
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.hdisplay = 480,
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.hsync_start = 480 + 15,
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.hsync_end = 480 + 15 + 0,
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.htotal = 480 + 15 + 0 + 15,
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.vdisplay = 864,
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.vsync_start = 864 + 14,
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.vsync_end = 864 + 14 + 1,
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.vtotal = 864 + 14 + 1 + 11,
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.vrefresh = 60,
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.width_mm = 48,
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.height_mm = 84,
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.flags = DRM_MODE_FLAG_PVSYNC,
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};
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/*
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* The timings are not very helpful as the display is used in
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* command mode using the maximum HS frequency.
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*/
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static const struct drm_display_mode sony_acx424akp_cmd_mode = {
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.clock = 420160,
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.hdisplay = 480,
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.hsync_start = 480 + 154,
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.hsync_end = 480 + 154 + 16,
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.htotal = 480 + 154 + 16 + 32,
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.vdisplay = 864,
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.vsync_start = 864 + 1,
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.vsync_end = 864 + 1 + 1,
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.vtotal = 864 + 1 + 1 + 1,
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/*
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* Some desired refresh rate, experiments at the maximum "pixel"
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* clock speed (HS clock 420 MHz) yields around 117Hz.
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*/
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.vrefresh = 60,
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.width_mm = 48,
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.height_mm = 84,
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};
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static inline struct acx424akp *panel_to_acx424akp(struct drm_panel *panel)
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{
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return container_of(panel, struct acx424akp, panel);
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}
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#define FOSC 20 /* 20Mhz */
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#define SCALE_FACTOR_NS_DIV_MHZ 1000
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static int acx424akp_set_brightness(struct backlight_device *bl)
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{
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struct acx424akp *acx = bl_get_data(bl);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
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int period_ns = 1023;
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int duty_ns = bl->props.brightness;
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u8 pwm_ratio;
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u8 pwm_div;
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u8 par;
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int ret;
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/* Calculate the PWM duty cycle in n/256's */
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pwm_ratio = max(((duty_ns * 256) / period_ns) - 1, 1);
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pwm_div = max(1,
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((FOSC * period_ns) / 256) /
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SCALE_FACTOR_NS_DIV_MHZ);
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/* Set up PWM dutycycle ONE byte (differs from the standard) */
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DRM_DEV_DEBUG(acx->dev, "calculated duty cycle %02x\n", pwm_ratio);
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ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
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&pwm_ratio, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev,
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"failed to set display PWM ratio (%d)\n",
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ret);
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return ret;
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}
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/*
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* Sequence to write PWMDIV:
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* address data
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* 0xF3 0xAA CMD2 Unlock
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* 0x00 0x01 Enter CMD2 page 0
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* 0X7D 0x01 No reload MTP of CMD2 P1
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* 0x22 PWMDIV
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* 0x7F 0xAA CMD2 page 1 lock
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*/
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par = 0xaa;
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ret = mipi_dsi_dcs_write(dsi, 0xf3, &par, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev,
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"failed to unlock CMD 2 (%d)\n",
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ret);
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return ret;
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}
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par = 0x01;
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ret = mipi_dsi_dcs_write(dsi, 0x00, &par, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev,
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"failed to enter page 1 (%d)\n",
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ret);
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return ret;
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}
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par = 0x01;
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ret = mipi_dsi_dcs_write(dsi, 0x7d, &par, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev,
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"failed to disable MTP reload (%d)\n",
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ret);
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return ret;
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}
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ret = mipi_dsi_dcs_write(dsi, 0x22, &pwm_div, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev,
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"failed to set PWM divisor (%d)\n",
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ret);
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return ret;
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}
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par = 0xaa;
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ret = mipi_dsi_dcs_write(dsi, 0x7f, &par, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev,
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"failed to lock CMD 2 (%d)\n",
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ret);
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return ret;
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}
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/* Enable backlight */
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par = 0x24;
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ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
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&par, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev,
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"failed to enable display backlight (%d)\n",
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ret);
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return ret;
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}
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return 0;
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}
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static const struct backlight_ops acx424akp_bl_ops = {
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.update_status = acx424akp_set_brightness,
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};
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static int acx424akp_read_id(struct acx424akp *acx)
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{
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
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u8 vendor, version, panel;
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u16 val;
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int ret;
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ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID1, &vendor, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev, "could not vendor ID byte\n");
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return ret;
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}
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ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID2, &version, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev, "could not read device version byte\n");
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return ret;
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}
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ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID3, &panel, 1);
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev, "could not read panel ID byte\n");
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return ret;
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}
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if (vendor == 0x00) {
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DRM_DEV_ERROR(acx->dev, "device vendor ID is zero\n");
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return -ENODEV;
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}
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val = (vendor << 8) | panel;
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switch (val) {
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case DISPLAY_SONY_ACX424AKP_ID1:
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case DISPLAY_SONY_ACX424AKP_ID2:
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case DISPLAY_SONY_ACX424AKP_ID3:
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DRM_DEV_INFO(acx->dev,
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"MTP vendor: %02x, version: %02x, panel: %02x\n",
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vendor, version, panel);
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break;
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default:
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DRM_DEV_INFO(acx->dev,
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"unknown vendor: %02x, version: %02x, panel: %02x\n",
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vendor, version, panel);
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break;
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}
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return 0;
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}
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static int acx424akp_power_on(struct acx424akp *acx)
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{
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int ret;
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ret = regulator_enable(acx->supply);
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if (ret) {
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DRM_DEV_ERROR(acx->dev, "failed to enable supply (%d)\n", ret);
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return ret;
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}
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/* Assert RESET */
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gpiod_set_value_cansleep(acx->reset_gpio, 1);
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udelay(20);
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/* De-assert RESET */
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gpiod_set_value_cansleep(acx->reset_gpio, 0);
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usleep_range(11000, 20000);
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return 0;
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}
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static void acx424akp_power_off(struct acx424akp *acx)
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{
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/* Assert RESET */
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gpiod_set_value_cansleep(acx->reset_gpio, 1);
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usleep_range(11000, 20000);
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regulator_disable(acx->supply);
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}
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static int acx424akp_prepare(struct drm_panel *panel)
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{
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struct acx424akp *acx = panel_to_acx424akp(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
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const u8 mddi = 3;
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int ret;
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ret = acx424akp_power_on(acx);
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if (ret)
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return ret;
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ret = acx424akp_read_id(acx);
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if (ret) {
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DRM_DEV_ERROR(acx->dev, "failed to read panel ID (%d)\n", ret);
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goto err_power_off;
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}
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/* Enabe tearing mode: send TE (tearing effect) at VBLANK */
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ret = mipi_dsi_dcs_set_tear_on(dsi,
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MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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if (ret) {
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DRM_DEV_ERROR(acx->dev, "failed to enable vblank TE (%d)\n",
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ret);
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goto err_power_off;
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}
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/*
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* Set MDDI
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*
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* This presumably deactivates the Qualcomm MDDI interface and
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* selects DSI, similar code is found in other drivers such as the
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* Sharp LS043T1LE01 which makes us suspect that this panel may be
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* using a Novatek NT35565 or similar display driver chip that shares
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* this command. Due to the lack of documentation we cannot know for
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* sure.
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*/
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ret = mipi_dsi_dcs_write(dsi, ACX424_DCS_SET_MDDI,
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&mddi, sizeof(mddi));
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if (ret < 0) {
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DRM_DEV_ERROR(acx->dev, "failed to set MDDI (%d)\n", ret);
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goto err_power_off;
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}
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/* Exit sleep mode */
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret) {
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DRM_DEV_ERROR(acx->dev, "failed to exit sleep mode (%d)\n",
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ret);
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goto err_power_off;
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}
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msleep(140);
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret) {
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DRM_DEV_ERROR(acx->dev, "failed to turn display on (%d)\n",
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ret);
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goto err_power_off;
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}
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if (acx->video_mode) {
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/* In video mode turn peripheral on */
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ret = mipi_dsi_turn_on_peripheral(dsi);
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if (ret) {
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dev_err(acx->dev, "failed to turn on peripheral\n");
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goto err_power_off;
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}
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}
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acx->bl->props.power = FB_BLANK_NORMAL;
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return 0;
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err_power_off:
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acx424akp_power_off(acx);
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return ret;
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}
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static int acx424akp_unprepare(struct drm_panel *panel)
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{
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struct acx424akp *acx = panel_to_acx424akp(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
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u8 par;
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int ret;
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/* Disable backlight */
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par = 0x00;
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ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
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&par, 1);
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if (ret) {
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DRM_DEV_ERROR(acx->dev,
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"failed to disable display backlight (%d)\n",
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ret);
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return ret;
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}
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ret = mipi_dsi_dcs_set_display_off(dsi);
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if (ret) {
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DRM_DEV_ERROR(acx->dev, "failed to turn display off (%d)\n",
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ret);
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return ret;
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}
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/* Enter sleep mode */
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ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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if (ret) {
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DRM_DEV_ERROR(acx->dev, "failed to enter sleep mode (%d)\n",
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ret);
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return ret;
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}
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msleep(85);
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acx424akp_power_off(acx);
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acx->bl->props.power = FB_BLANK_POWERDOWN;
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return 0;
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}
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static int acx424akp_enable(struct drm_panel *panel)
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{
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struct acx424akp *acx = panel_to_acx424akp(panel);
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/*
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* The backlight is on as long as the display is on
|
||||
* so no use to call backlight_enable() here.
|
||||
*/
|
||||
acx->bl->props.power = FB_BLANK_UNBLANK;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acx424akp_disable(struct drm_panel *panel)
|
||||
{
|
||||
struct acx424akp *acx = panel_to_acx424akp(panel);
|
||||
|
||||
/*
|
||||
* The backlight is on as long as the display is on
|
||||
* so no use to call backlight_disable() here.
|
||||
*/
|
||||
acx->bl->props.power = FB_BLANK_NORMAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acx424akp_get_modes(struct drm_panel *panel,
|
||||
struct drm_connector *connector)
|
||||
{
|
||||
struct acx424akp *acx = panel_to_acx424akp(panel);
|
||||
struct drm_display_mode *mode;
|
||||
|
||||
if (acx->video_mode)
|
||||
mode = drm_mode_duplicate(connector->dev,
|
||||
&sony_acx424akp_vid_mode);
|
||||
else
|
||||
mode = drm_mode_duplicate(connector->dev,
|
||||
&sony_acx424akp_cmd_mode);
|
||||
if (!mode) {
|
||||
DRM_ERROR("bad mode or failed to add mode\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
drm_mode_set_name(mode);
|
||||
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
|
||||
|
||||
connector->display_info.width_mm = mode->width_mm;
|
||||
connector->display_info.height_mm = mode->height_mm;
|
||||
|
||||
drm_mode_probed_add(connector, mode);
|
||||
|
||||
return 1; /* Number of modes */
|
||||
}
|
||||
|
||||
static const struct drm_panel_funcs acx424akp_drm_funcs = {
|
||||
.disable = acx424akp_disable,
|
||||
.unprepare = acx424akp_unprepare,
|
||||
.prepare = acx424akp_prepare,
|
||||
.enable = acx424akp_enable,
|
||||
.get_modes = acx424akp_get_modes,
|
||||
};
|
||||
|
||||
static int acx424akp_probe(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct device *dev = &dsi->dev;
|
||||
struct acx424akp *acx;
|
||||
int ret;
|
||||
|
||||
acx = devm_kzalloc(dev, sizeof(struct acx424akp), GFP_KERNEL);
|
||||
if (!acx)
|
||||
return -ENOMEM;
|
||||
acx->video_mode = of_property_read_bool(dev->of_node,
|
||||
"enforce-video-mode");
|
||||
|
||||
mipi_dsi_set_drvdata(dsi, acx);
|
||||
acx->dev = dev;
|
||||
|
||||
dsi->lanes = 2;
|
||||
dsi->format = MIPI_DSI_FMT_RGB888;
|
||||
/*
|
||||
* FIXME: these come from the ST-Ericsson vendor driver for the
|
||||
* HREF520 and seems to reflect limitations in the PLLs on that
|
||||
* platform, if you have the datasheet, please cross-check the
|
||||
* actual max rates.
|
||||
*/
|
||||
dsi->lp_rate = 19200000;
|
||||
dsi->hs_rate = 420160000;
|
||||
|
||||
if (acx->video_mode)
|
||||
/* Burst mode using event for sync */
|
||||
dsi->mode_flags =
|
||||
MIPI_DSI_MODE_VIDEO |
|
||||
MIPI_DSI_MODE_VIDEO_BURST;
|
||||
else
|
||||
dsi->mode_flags =
|
||||
MIPI_DSI_CLOCK_NON_CONTINUOUS |
|
||||
MIPI_DSI_MODE_EOT_PACKET;
|
||||
|
||||
acx->supply = devm_regulator_get(dev, "vddi");
|
||||
if (IS_ERR(acx->supply))
|
||||
return PTR_ERR(acx->supply);
|
||||
|
||||
/* This asserts RESET by default */
|
||||
acx->reset_gpio = devm_gpiod_get_optional(dev, "reset",
|
||||
GPIOD_OUT_HIGH);
|
||||
if (IS_ERR(acx->reset_gpio)) {
|
||||
ret = PTR_ERR(acx->reset_gpio);
|
||||
if (ret != -EPROBE_DEFER)
|
||||
DRM_DEV_ERROR(dev, "failed to request GPIO (%d)\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
drm_panel_init(&acx->panel, dev, &acx424akp_drm_funcs,
|
||||
DRM_MODE_CONNECTOR_DSI);
|
||||
|
||||
acx->bl = devm_backlight_device_register(dev, "acx424akp", dev, acx,
|
||||
&acx424akp_bl_ops, NULL);
|
||||
if (IS_ERR(acx->bl)) {
|
||||
DRM_DEV_ERROR(dev, "failed to register backlight device\n");
|
||||
return PTR_ERR(acx->bl);
|
||||
}
|
||||
acx->bl->props.max_brightness = 1023;
|
||||
acx->bl->props.brightness = 512;
|
||||
acx->bl->props.power = FB_BLANK_POWERDOWN;
|
||||
|
||||
ret = drm_panel_add(&acx->panel);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = mipi_dsi_attach(dsi);
|
||||
if (ret < 0) {
|
||||
drm_panel_remove(&acx->panel);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acx424akp_remove(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct acx424akp *acx = mipi_dsi_get_drvdata(dsi);
|
||||
|
||||
mipi_dsi_detach(dsi);
|
||||
drm_panel_remove(&acx->panel);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id acx424akp_of_match[] = {
|
||||
{ .compatible = "sony,acx424akp" },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, acx424akp_of_match);
|
||||
|
||||
static struct mipi_dsi_driver acx424akp_driver = {
|
||||
.probe = acx424akp_probe,
|
||||
.remove = acx424akp_remove,
|
||||
.driver = {
|
||||
.name = "panel-sony-acx424akp",
|
||||
.of_match_table = acx424akp_of_match,
|
||||
},
|
||||
};
|
||||
module_mipi_dsi_driver(acx424akp_driver);
|
||||
|
||||
MODULE_AUTHOR("Linus Wallei <linus.walleij@linaro.org>");
|
||||
MODULE_DESCRIPTION("MIPI-DSI Sony acx424akp Panel Driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in a new issue