djsundog/sharp-drm-driver-radxa-zero
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Refresh after param change

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This commit is contained in:
Andrew D'Angelo 2023-06-28 22:45:12 -05:00
parent 4b0a407598
commit 0e559597dd
2 changed files with 43 additions and 2 deletions
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37
drm_iface.c
View File

@ -46,6 +46,7 @@ struct sharp_memory_panel {
const struct drm_display_mode *mode;
struct drm_connector connector;
struct spi_device *spi;
struct drm_framebuffer *fb;
struct timer_list vcom_timer;
@ -58,6 +59,8 @@ struct sharp_memory_panel {
unsigned char *trailer_buf;
};
static struct sharp_memory_panel* g_panel = NULL;
static inline struct sharp_memory_panel *drm_to_panel(struct drm_device *drm)
{
return container_of(drm, struct sharp_memory_panel, drm);
@ -355,6 +358,22 @@ static int sharp_memory_connector_get_modes(struct drm_connector *connector)
return drm_connector_helper_get_modes_fixed(connector, panel->mode);
}
static struct drm_framebuffer* create_and_store_fb(struct drm_device *dev, struct drm_file *file,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_framebuffer* fb;
// Initialize framebuffer
fb = drm_gem_fb_create_with_dirty(dev, file, mode_cmd);
// Store global framebuffer for external operations
if (g_panel) {
g_panel->fb = fb;
}
return fb;
}
static const struct drm_connector_helper_funcs sharp_memory_connector_hfuncs = {
.get_modes = sharp_memory_connector_get_modes,
};
@ -368,7 +387,7 @@ static const struct drm_connector_funcs sharp_memory_connector_funcs = {
};
static const struct drm_mode_config_funcs sharp_memory_mode_config_funcs = {
.fb_create = drm_gem_fb_create_with_dirty,
.fb_create = create_and_store_fb,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
@ -423,6 +442,7 @@ int drm_probe(struct spi_device *spi)
printk(KERN_ERR "sharp_memory: failed to allocate panel\n");
return PTR_ERR(panel);
}
g_panel = panel;
// Initalize DRM mode
drm = &panel->drm;
@ -494,6 +514,9 @@ void drm_remove(struct spi_device *spi)
printk(KERN_DEBUG "sharp_memory: drm_remove\n");
// Clear global panel
g_panel = NULL;
// Get DRM and panel device from SPI
drm = spi_get_drvdata(spi);
panel = drm_to_panel(drm);
@ -509,5 +532,17 @@ void drm_shutdown(struct spi_device *spi)
int drm_refresh(void)
{
struct drm_rect dirty_rect;
if (g_panel && g_panel->fb) {
// Refresh framebuffer
dirty_rect.x1 = 0;
dirty_rect.x2 = g_panel->fb->width;
dirty_rect.y1 = 0;
dirty_rect.y2 = g_panel->fb->height;
return sharp_memory_fb_dirty(g_panel->fb, &dirty_rect);
}
return 0;
}

8
params_iface.c
View File

@ -3,6 +3,7 @@
#include <linux/moduleparam.h>
#include "params_iface.h"
#include "drm_iface.h"
int g_param_mono_cutoff = 32;
int g_param_mono_invert = 0;
@ -16,7 +17,12 @@ static int set_param_u8(const char *val, const struct kernel_param *kp)
return -EINVAL;
}
return param_set_int(val, kp);
rc = param_set_int(val, kp);
// Refresh framebuffer
(void)drm_refresh();
return rc;
}
static const struct kernel_param_ops u8_param_ops = {