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drm/panel: Add driver for the Sony ACX565AKM panel
This panel is used on the Nokia N900. The code is based on the omapdrm-specific panel-sony-acx565akm driver. The hardware-related logic has been changed as little as possible to avoid regressions as hardware availability is lacking to test the changes. Follow-up patches should address the items listed in the TODO list. v2: - fix checkpatch warning (lcd == NULL) => (!lcd) (sam) Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190813201101.30980-8-laurent.pinchart@ideasonboard.com
This commit is contained in:
Laurent Pinchart
Sam Ravnborg
parent
c9cf4c2a3b
commit
1c8fc3f0c5
@ -316,6 +316,14 @@ 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_ACX565AKM
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tristate "Sony ACX565AKM panel"
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depends on GPIOLIB && OF && SPI
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depends on BACKLIGHT_CLASS_DEVICE
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help
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Say Y here if you want to enable support for the Sony ACX565AKM
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800x600 3.5" panel (found on the Nokia N900).
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config DRM_PANEL_TPO_TPG110
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tristate "TPO TPG 800x400 panel"
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depends on OF && SPI && GPIOLIB
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@ -33,5 +33,6 @@ 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-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
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obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
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obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
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@ -140,7 +140,7 @@ static int ls037v7dw01_probe(struct platform_device *pdev)
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struct ls037v7dw01_panel *lcd;
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lcd = devm_kzalloc(&pdev->dev, sizeof(*lcd), GFP_KERNEL);
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if (lcd == NULL)
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if (!lcd)
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return -ENOMEM;
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platform_set_drvdata(pdev, lcd);
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701
drivers/gpu/drm/panel/panel-sony-acx565akm.c
Normal file
701
drivers/gpu/drm/panel/panel-sony-acx565akm.c
Normal file
@ -0,0 +1,701 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Sony ACX565AKM LCD Panel driver
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*
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* Copyright (C) 2019 Texas Instruments Incorporated
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*
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* Based on the omapdrm-specific panel-sony-acx565akm driver
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*
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* Copyright (C) 2010 Nokia Corporation
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* Author: Imre Deak <imre.deak@nokia.com>
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*/
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/*
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* TODO (to be addressed with hardware access to test the changes):
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*
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* - Update backlight support to use backlight_update_status() etc.
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* - Use prepare/unprepare for the basic power on/off of the backligt
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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/jiffies.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/sched.h>
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#include <linux/spi/spi.h>
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#include <video/mipi_display.h>
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#include <drm/drm_connector.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5)
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#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4)
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#define CTRL_DISP_BACKLIGHT_ON (1 << 2)
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#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1)
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#define MIPID_CMD_WRITE_CABC 0x55
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#define MIPID_CMD_READ_CABC 0x56
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#define MIPID_VER_LPH8923 3
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#define MIPID_VER_LS041Y3 4
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#define MIPID_VER_L4F00311 8
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#define MIPID_VER_ACX565AKM 9
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struct acx565akm_panel {
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struct drm_panel panel;
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struct spi_device *spi;
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struct gpio_desc *reset_gpio;
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struct backlight_device *backlight;
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struct mutex mutex;
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const char *name;
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u8 display_id[3];
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int model;
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int revision;
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bool has_bc;
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bool has_cabc;
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bool enabled;
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unsigned int cabc_mode;
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/*
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* Next value of jiffies when we can issue the next sleep in/out
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* command.
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*/
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unsigned long hw_guard_end;
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unsigned long hw_guard_wait; /* max guard time in jiffies */
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};
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#define to_acx565akm_device(p) container_of(p, struct acx565akm_panel, panel)
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static void acx565akm_transfer(struct acx565akm_panel *lcd, int cmd,
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const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
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{
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struct spi_message m;
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struct spi_transfer *x, xfer[5];
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int ret;
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spi_message_init(&m);
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memset(xfer, 0, sizeof(xfer));
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x = &xfer[0];
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cmd &= 0xff;
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x->tx_buf = &cmd;
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x->bits_per_word = 9;
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x->len = 2;
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if (rlen > 1 && wlen == 0) {
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/*
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* Between the command and the response data there is a
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* dummy clock cycle. Add an extra bit after the command
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* word to account for this.
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*/
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x->bits_per_word = 10;
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cmd <<= 1;
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}
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spi_message_add_tail(x, &m);
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if (wlen) {
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x++;
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x->tx_buf = wbuf;
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x->len = wlen;
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x->bits_per_word = 9;
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spi_message_add_tail(x, &m);
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}
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if (rlen) {
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x++;
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x->rx_buf = rbuf;
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x->len = rlen;
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spi_message_add_tail(x, &m);
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}
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ret = spi_sync(lcd->spi, &m);
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if (ret < 0)
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dev_dbg(&lcd->spi->dev, "spi_sync %d\n", ret);
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}
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static inline void acx565akm_cmd(struct acx565akm_panel *lcd, int cmd)
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{
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acx565akm_transfer(lcd, cmd, NULL, 0, NULL, 0);
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}
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static inline void acx565akm_write(struct acx565akm_panel *lcd,
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int reg, const u8 *buf, int len)
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{
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acx565akm_transfer(lcd, reg, buf, len, NULL, 0);
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}
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static inline void acx565akm_read(struct acx565akm_panel *lcd,
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int reg, u8 *buf, int len)
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{
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acx565akm_transfer(lcd, reg, NULL, 0, buf, len);
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}
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/* -----------------------------------------------------------------------------
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* Auto Brightness Control Via sysfs
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*/
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static unsigned int acx565akm_get_cabc_mode(struct acx565akm_panel *lcd)
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{
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return lcd->cabc_mode;
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}
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static void acx565akm_set_cabc_mode(struct acx565akm_panel *lcd,
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unsigned int mode)
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{
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u16 cabc_ctrl;
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lcd->cabc_mode = mode;
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if (!lcd->enabled)
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return;
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cabc_ctrl = 0;
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acx565akm_read(lcd, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
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cabc_ctrl &= ~3;
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cabc_ctrl |= (1 << 8) | (mode & 3);
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acx565akm_write(lcd, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
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}
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static unsigned int acx565akm_get_hw_cabc_mode(struct acx565akm_panel *lcd)
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{
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u8 cabc_ctrl;
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acx565akm_read(lcd, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
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return cabc_ctrl & 3;
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}
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static const char * const acx565akm_cabc_modes[] = {
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"off", /* always used when CABC is not supported */
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"ui",
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"still-image",
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"moving-image",
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};
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static ssize_t cabc_mode_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct acx565akm_panel *lcd = dev_get_drvdata(dev);
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const char *mode_str;
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int mode;
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if (!lcd->has_cabc)
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mode = 0;
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else
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mode = acx565akm_get_cabc_mode(lcd);
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mode_str = "unknown";
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if (mode >= 0 && mode < ARRAY_SIZE(acx565akm_cabc_modes))
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mode_str = acx565akm_cabc_modes[mode];
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return sprintf(buf, "%s\n", mode_str);
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}
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static ssize_t cabc_mode_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct acx565akm_panel *lcd = dev_get_drvdata(dev);
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(acx565akm_cabc_modes); i++) {
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const char *mode_str = acx565akm_cabc_modes[i];
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int cmp_len = strlen(mode_str);
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if (count > 0 && buf[count - 1] == '\n')
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count--;
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if (count != cmp_len)
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continue;
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if (strncmp(buf, mode_str, cmp_len) == 0)
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break;
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}
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if (i == ARRAY_SIZE(acx565akm_cabc_modes))
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return -EINVAL;
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if (!lcd->has_cabc && i != 0)
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return -EINVAL;
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mutex_lock(&lcd->mutex);
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acx565akm_set_cabc_mode(lcd, i);
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mutex_unlock(&lcd->mutex);
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return count;
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}
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static ssize_t cabc_available_modes_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct acx565akm_panel *lcd = dev_get_drvdata(dev);
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unsigned int i;
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size_t len = 0;
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if (!lcd->has_cabc)
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return sprintf(buf, "%s\n", acx565akm_cabc_modes[0]);
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for (i = 0; i < ARRAY_SIZE(acx565akm_cabc_modes); i++)
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len += sprintf(&buf[len], "%s%s", i ? " " : "",
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acx565akm_cabc_modes[i]);
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buf[len++] = '\n';
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return len;
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}
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static DEVICE_ATTR_RW(cabc_mode);
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static DEVICE_ATTR_RO(cabc_available_modes);
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static struct attribute *acx565akm_cabc_attrs[] = {
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&dev_attr_cabc_mode.attr,
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&dev_attr_cabc_available_modes.attr,
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NULL,
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};
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static const struct attribute_group acx565akm_cabc_attr_group = {
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.attrs = acx565akm_cabc_attrs,
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};
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/* -----------------------------------------------------------------------------
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* Backlight Device
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*/
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static int acx565akm_get_actual_brightness(struct acx565akm_panel *lcd)
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{
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u8 bv;
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acx565akm_read(lcd, MIPI_DCS_GET_DISPLAY_BRIGHTNESS, &bv, 1);
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return bv;
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}
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static void acx565akm_set_brightness(struct acx565akm_panel *lcd, int level)
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{
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u16 ctrl;
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int bv;
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bv = level | (1 << 8);
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acx565akm_write(lcd, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, (u8 *)&bv, 2);
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acx565akm_read(lcd, MIPI_DCS_GET_CONTROL_DISPLAY, (u8 *)&ctrl, 1);
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if (level)
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ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON |
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CTRL_DISP_BACKLIGHT_ON;
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else
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ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON |
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CTRL_DISP_BACKLIGHT_ON);
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ctrl |= 1 << 8;
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acx565akm_write(lcd, MIPI_DCS_WRITE_CONTROL_DISPLAY, (u8 *)&ctrl, 2);
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}
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static int acx565akm_bl_update_status_locked(struct backlight_device *dev)
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{
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struct acx565akm_panel *lcd = dev_get_drvdata(&dev->dev);
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int level;
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if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
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dev->props.power == FB_BLANK_UNBLANK)
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level = dev->props.brightness;
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else
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level = 0;
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acx565akm_set_brightness(lcd, level);
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return 0;
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}
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static int acx565akm_bl_update_status(struct backlight_device *dev)
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{
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struct acx565akm_panel *lcd = dev_get_drvdata(&dev->dev);
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int ret;
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mutex_lock(&lcd->mutex);
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ret = acx565akm_bl_update_status_locked(dev);
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mutex_unlock(&lcd->mutex);
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return ret;
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}
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static int acx565akm_bl_get_intensity(struct backlight_device *dev)
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{
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struct acx565akm_panel *lcd = dev_get_drvdata(&dev->dev);
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unsigned int intensity;
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mutex_lock(&lcd->mutex);
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if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
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dev->props.power == FB_BLANK_UNBLANK)
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intensity = acx565akm_get_actual_brightness(lcd);
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else
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intensity = 0;
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mutex_unlock(&lcd->mutex);
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return intensity;
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}
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static const struct backlight_ops acx565akm_bl_ops = {
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.get_brightness = acx565akm_bl_get_intensity,
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.update_status = acx565akm_bl_update_status,
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};
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static int acx565akm_backlight_init(struct acx565akm_panel *lcd)
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{
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struct backlight_properties props = {
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.fb_blank = FB_BLANK_UNBLANK,
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.power = FB_BLANK_UNBLANK,
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.type = BACKLIGHT_RAW,
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};
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int ret;
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lcd->backlight = backlight_device_register(lcd->name, &lcd->spi->dev,
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lcd, &acx565akm_bl_ops,
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&props);
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if (IS_ERR(lcd->backlight)) {
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ret = PTR_ERR(lcd->backlight);
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lcd->backlight = NULL;
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return ret;
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}
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if (lcd->has_cabc) {
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ret = sysfs_create_group(&lcd->backlight->dev.kobj,
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&acx565akm_cabc_attr_group);
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if (ret < 0) {
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dev_err(&lcd->spi->dev,
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"%s failed to create sysfs files\n", __func__);
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backlight_device_unregister(lcd->backlight);
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return ret;
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}
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lcd->cabc_mode = acx565akm_get_hw_cabc_mode(lcd);
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}
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lcd->backlight->props.max_brightness = 255;
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lcd->backlight->props.brightness = acx565akm_get_actual_brightness(lcd);
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acx565akm_bl_update_status_locked(lcd->backlight);
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return 0;
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}
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static void acx565akm_backlight_cleanup(struct acx565akm_panel *lcd)
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{
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if (lcd->has_cabc)
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sysfs_remove_group(&lcd->backlight->dev.kobj,
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&acx565akm_cabc_attr_group);
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backlight_device_unregister(lcd->backlight);
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}
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/* -----------------------------------------------------------------------------
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* DRM Bridge Operations
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*/
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static void acx565akm_set_sleep_mode(struct acx565akm_panel *lcd, int on)
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{
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int cmd = on ? MIPI_DCS_ENTER_SLEEP_MODE : MIPI_DCS_EXIT_SLEEP_MODE;
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unsigned long wait;
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/*
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* We have to keep 120msec between sleep in/out commands.
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* (8.2.15, 8.2.16).
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*/
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wait = lcd->hw_guard_end - jiffies;
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if ((long)wait > 0 && wait <= lcd->hw_guard_wait) {
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set_current_state(TASK_UNINTERRUPTIBLE);
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schedule_timeout(wait);
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}
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acx565akm_cmd(lcd, cmd);
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|
||||
lcd->hw_guard_wait = msecs_to_jiffies(120);
|
||||
lcd->hw_guard_end = jiffies + lcd->hw_guard_wait;
|
||||
}
|
||||
|
||||
static void acx565akm_set_display_state(struct acx565akm_panel *lcd,
|
||||
int enabled)
|
||||
{
|
||||
int cmd = enabled ? MIPI_DCS_SET_DISPLAY_ON : MIPI_DCS_SET_DISPLAY_OFF;
|
||||
|
||||
acx565akm_cmd(lcd, cmd);
|
||||
}
|
||||
|
||||
static int acx565akm_power_on(struct acx565akm_panel *lcd)
|
||||
{
|
||||
/*FIXME tweak me */
|
||||
msleep(50);
|
||||
|
||||
gpiod_set_value(lcd->reset_gpio, 1);
|
||||
|
||||
if (lcd->enabled) {
|
||||
dev_dbg(&lcd->spi->dev, "panel already enabled\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* We have to meet all the following delay requirements:
|
||||
* 1. tRW: reset pulse width 10usec (7.12.1)
|
||||
* 2. tRT: reset cancel time 5msec (7.12.1)
|
||||
* 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst
|
||||
* case (7.6.2)
|
||||
* 4. 120msec before the sleep out command (7.12.1)
|
||||
*/
|
||||
msleep(120);
|
||||
|
||||
acx565akm_set_sleep_mode(lcd, 0);
|
||||
lcd->enabled = true;
|
||||
|
||||
/* 5msec between sleep out and the next command. (8.2.16) */
|
||||
usleep_range(5000, 10000);
|
||||
acx565akm_set_display_state(lcd, 1);
|
||||
acx565akm_set_cabc_mode(lcd, lcd->cabc_mode);
|
||||
|
||||
return acx565akm_bl_update_status_locked(lcd->backlight);
|
||||
}
|
||||
|
||||
static void acx565akm_power_off(struct acx565akm_panel *lcd)
|
||||
{
|
||||
if (!lcd->enabled)
|
||||
return;
|
||||
|
||||
acx565akm_set_display_state(lcd, 0);
|
||||
acx565akm_set_sleep_mode(lcd, 1);
|
||||
lcd->enabled = false;
|
||||
/*
|
||||
* We have to provide PCLK,HS,VS signals for 2 frames (worst case
|
||||
* ~50msec) after sending the sleep in command and asserting the
|
||||
* reset signal. We probably could assert the reset w/o the delay
|
||||
* but we still delay to avoid possible artifacts. (7.6.1)
|
||||
*/
|
||||
msleep(50);
|
||||
|
||||
gpiod_set_value(lcd->reset_gpio, 0);
|
||||
|
||||
/* FIXME need to tweak this delay */
|
||||
msleep(100);
|
||||
}
|
||||
|
||||
static int acx565akm_disable(struct drm_panel *panel)
|
||||
{
|
||||
struct acx565akm_panel *lcd = to_acx565akm_device(panel);
|
||||
|
||||
mutex_lock(&lcd->mutex);
|
||||
acx565akm_power_off(lcd);
|
||||
mutex_unlock(&lcd->mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acx565akm_enable(struct drm_panel *panel)
|
||||
{
|
||||
struct acx565akm_panel *lcd = to_acx565akm_device(panel);
|
||||
|
||||
mutex_lock(&lcd->mutex);
|
||||
acx565akm_power_on(lcd);
|
||||
mutex_unlock(&lcd->mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct drm_display_mode acx565akm_mode = {
|
||||
.clock = 24000,
|
||||
.hdisplay = 800,
|
||||
.hsync_start = 800 + 28,
|
||||
.hsync_end = 800 + 28 + 4,
|
||||
.htotal = 800 + 28 + 4 + 24,
|
||||
.vdisplay = 480,
|
||||
.vsync_start = 480 + 3,
|
||||
.vsync_end = 480 + 3 + 3,
|
||||
.vtotal = 480 + 3 + 3 + 4,
|
||||
.vrefresh = 57,
|
||||
.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
|
||||
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
|
||||
.width_mm = 77,
|
||||
.height_mm = 46,
|
||||
};
|
||||
|
||||
static int acx565akm_get_modes(struct drm_panel *panel)
|
||||
{
|
||||
struct drm_connector *connector = panel->connector;
|
||||
struct drm_display_mode *mode;
|
||||
|
||||
mode = drm_mode_duplicate(panel->drm, &acx565akm_mode);
|
||||
if (!mode)
|
||||
return -ENOMEM;
|
||||
|
||||
drm_mode_set_name(mode);
|
||||
drm_mode_probed_add(connector, mode);
|
||||
|
||||
connector->display_info.width_mm = acx565akm_mode.width_mm;
|
||||
connector->display_info.height_mm = acx565akm_mode.height_mm;
|
||||
connector->display_info.bus_flags = DRM_BUS_FLAG_DE_HIGH
|
||||
| DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE
|
||||
| DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static const struct drm_panel_funcs acx565akm_funcs = {
|
||||
.disable = acx565akm_disable,
|
||||
.enable = acx565akm_enable,
|
||||
.get_modes = acx565akm_get_modes,
|
||||
};
|
||||
|
||||
/* -----------------------------------------------------------------------------
|
||||
* Probe, Detect and Remove
|
||||
*/
|
||||
|
||||
static int acx565akm_detect(struct acx565akm_panel *lcd)
|
||||
{
|
||||
__be32 value;
|
||||
u32 status;
|
||||
int ret = 0;
|
||||
|
||||
/*
|
||||
* After being taken out of reset the panel needs 5ms before the first
|
||||
* command can be sent.
|
||||
*/
|
||||
gpiod_set_value(lcd->reset_gpio, 1);
|
||||
usleep_range(5000, 10000);
|
||||
|
||||
acx565akm_read(lcd, MIPI_DCS_GET_DISPLAY_STATUS, (u8 *)&value, 4);
|
||||
status = __be32_to_cpu(value);
|
||||
lcd->enabled = (status & (1 << 17)) && (status & (1 << 10));
|
||||
|
||||
dev_dbg(&lcd->spi->dev,
|
||||
"LCD panel %s by bootloader (status 0x%04x)\n",
|
||||
lcd->enabled ? "enabled" : "disabled ", status);
|
||||
|
||||
acx565akm_read(lcd, MIPI_DCS_GET_DISPLAY_ID, lcd->display_id, 3);
|
||||
dev_dbg(&lcd->spi->dev, "MIPI display ID: %02x%02x%02x\n",
|
||||
lcd->display_id[0], lcd->display_id[1], lcd->display_id[2]);
|
||||
|
||||
switch (lcd->display_id[0]) {
|
||||
case 0x10:
|
||||
lcd->model = MIPID_VER_ACX565AKM;
|
||||
lcd->name = "acx565akm";
|
||||
lcd->has_bc = 1;
|
||||
lcd->has_cabc = 1;
|
||||
break;
|
||||
case 0x29:
|
||||
lcd->model = MIPID_VER_L4F00311;
|
||||
lcd->name = "l4f00311";
|
||||
break;
|
||||
case 0x45:
|
||||
lcd->model = MIPID_VER_LPH8923;
|
||||
lcd->name = "lph8923";
|
||||
break;
|
||||
case 0x83:
|
||||
lcd->model = MIPID_VER_LS041Y3;
|
||||
lcd->name = "ls041y3";
|
||||
break;
|
||||
default:
|
||||
lcd->name = "unknown";
|
||||
dev_err(&lcd->spi->dev, "unknown display ID\n");
|
||||
ret = -ENODEV;
|
||||
goto done;
|
||||
}
|
||||
|
||||
lcd->revision = lcd->display_id[1];
|
||||
|
||||
dev_info(&lcd->spi->dev, "%s rev %02x panel detected\n",
|
||||
lcd->name, lcd->revision);
|
||||
|
||||
done:
|
||||
if (!lcd->enabled)
|
||||
gpiod_set_value(lcd->reset_gpio, 0);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int acx565akm_probe(struct spi_device *spi)
|
||||
{
|
||||
struct acx565akm_panel *lcd;
|
||||
int ret;
|
||||
|
||||
lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);
|
||||
if (lcd == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
spi_set_drvdata(spi, lcd);
|
||||
spi->mode = SPI_MODE_3;
|
||||
|
||||
lcd->spi = spi;
|
||||
mutex_init(&lcd->mutex);
|
||||
|
||||
lcd->reset_gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
|
||||
if (IS_ERR(lcd->reset_gpio)) {
|
||||
dev_err(&spi->dev, "failed to get reset GPIO\n");
|
||||
return PTR_ERR(lcd->reset_gpio);
|
||||
}
|
||||
|
||||
ret = acx565akm_detect(lcd);
|
||||
if (ret < 0) {
|
||||
dev_err(&spi->dev, "panel detection failed\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (lcd->has_bc) {
|
||||
ret = acx565akm_backlight_init(lcd);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
drm_panel_init(&lcd->panel);
|
||||
lcd->panel.dev = &lcd->spi->dev;
|
||||
lcd->panel.funcs = &acx565akm_funcs;
|
||||
|
||||
ret = drm_panel_add(&lcd->panel);
|
||||
if (ret < 0) {
|
||||
if (lcd->has_bc)
|
||||
acx565akm_backlight_cleanup(lcd);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acx565akm_remove(struct spi_device *spi)
|
||||
{
|
||||
struct acx565akm_panel *lcd = spi_get_drvdata(spi);
|
||||
|
||||
drm_panel_remove(&lcd->panel);
|
||||
|
||||
if (lcd->has_bc)
|
||||
acx565akm_backlight_cleanup(lcd);
|
||||
|
||||
drm_panel_disable(&lcd->panel);
|
||||
drm_panel_unprepare(&lcd->panel);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id acx565akm_of_match[] = {
|
||||
{ .compatible = "sony,acx565akm", },
|
||||
{ /* sentinel */ },
|
||||
};
|
||||
|
||||
MODULE_DEVICE_TABLE(of, acx565akm_of_match);
|
||||
|
||||
static struct spi_driver acx565akm_driver = {
|
||||
.probe = acx565akm_probe,
|
||||
.remove = acx565akm_remove,
|
||||
.driver = {
|
||||
.name = "panel-sony-acx565akm",
|
||||
.of_match_table = acx565akm_of_match,
|
||||
},
|
||||
};
|
||||
|
||||
module_spi_driver(acx565akm_driver);
|
||||
|
||||
MODULE_ALIAS("spi:sony,acx565akm");
|
||||
MODULE_AUTHOR("Nokia Corporation");
|
||||
MODULE_DESCRIPTION("Sony ACX565AKM LCD Panel Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user