hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

drm/pl111: Add optional variant display en/disable callbacks 

The silcon and components around the PL111 may require some
variants to perform special set-up of the display. Add two
callbacks to manage this.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170908124709.4758-6-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij 2017-09-08 14:47:08 +02:00
parent 52289a07a0
commit ad86ebe71c
2 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/pl111/pl111_display.c
View File

@ -208,6 +208,9 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe,
*/
msleep(20);
if (priv->variant_display_enable)
priv->variant_display_enable(drm, fb->format->format);
/* Power Up */
cntl |= CNTL_LCDPWR;
writel(cntl, priv->regs + priv->ctrl);
@ -237,6 +240,9 @@ void pl111_display_disable(struct drm_simple_display_pipe *pipe)
*/
msleep(20);
if (priv->variant_display_disable)
priv->variant_display_disable(drm);
/* Disable */
writel(0, priv->regs + priv->ctrl);

3
drivers/gpu/drm/pl111/pl111_drm.h
View File

@ -26,6 +26,7 @@
#include <drm/drm_panel.h>
#include <drm/drm_bridge.h>
#include <linux/clk-provider.h>
#include <linux/interrupt.h>
#define CLCD_IRQ_NEXTBASE_UPDATE BIT(2)
@ -66,6 +67,8 @@ struct pl111_drm_dev_private {
*/
spinlock_t tim2_lock;
const struct pl111_variant_data *variant;
void (*variant_display_enable) (struct drm_device *drm, u32 format);
void (*variant_display_disable) (struct drm_device *drm);
};
int pl111_display_init(struct drm_device *dev);