#include <linux/clk.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
+#include <linux/pinctrl/consumer.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
* @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device
* @event: pointer to the current page flip event
* @id: CRTC id (returned by drm_crtc_index)
- * @dpms: DPMS mode
+ * @enabled: CRTC state
*/
struct atmel_hlcdc_crtc {
struct drm_crtc base;
struct atmel_hlcdc_dc *dc;
struct drm_pending_vblank_event *event;
int id;
- int dpms;
+ bool enabled;
};
static inline struct atmel_hlcdc_crtc *
return container_of(crtc, struct atmel_hlcdc_crtc, base);
}
-static void atmel_hlcdc_crtc_dpms(struct drm_crtc *c, int mode)
+static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
{
- struct drm_device *dev = c->dev;
struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
struct regmap *regmap = crtc->dc->hlcdc->regmap;
- unsigned int status;
-
- if (mode != DRM_MODE_DPMS_ON)
- mode = DRM_MODE_DPMS_OFF;
-
- if (crtc->dpms == mode)
- return;
-
- pm_runtime_get_sync(dev->dev);
-
- if (mode != DRM_MODE_DPMS_ON) {
- regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_DISP);
- while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
- (status & ATMEL_HLCDC_DISP))
- cpu_relax();
-
- regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_SYNC);
- while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
- (status & ATMEL_HLCDC_SYNC))
- cpu_relax();
-
- regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_PIXEL_CLK);
- while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
- (status & ATMEL_HLCDC_PIXEL_CLK))
- cpu_relax();
-
- clk_disable_unprepare(crtc->dc->hlcdc->sys_clk);
-
- pm_runtime_allow(dev->dev);
- } else {
- pm_runtime_forbid(dev->dev);
-
- clk_prepare_enable(crtc->dc->hlcdc->sys_clk);
-
- regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_PIXEL_CLK);
- while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
- !(status & ATMEL_HLCDC_PIXEL_CLK))
- cpu_relax();
-
-
- regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_SYNC);
- while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
- !(status & ATMEL_HLCDC_SYNC))
- cpu_relax();
-
- regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_DISP);
- while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
- !(status & ATMEL_HLCDC_DISP))
- cpu_relax();
- }
-
- pm_runtime_put_sync(dev->dev);
-
- crtc->dpms = mode;
-}
-
-static int atmel_hlcdc_crtc_mode_set(struct drm_crtc *c,
- struct drm_display_mode *mode,
- struct drm_display_mode *adj,
- int x, int y,
- struct drm_framebuffer *old_fb)
-{
- struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
- struct regmap *regmap = crtc->dc->hlcdc->regmap;
- struct drm_plane *plane = c->primary;
- struct drm_framebuffer *fb;
+ struct drm_display_mode *adj = &c->state->adjusted_mode;
unsigned long mode_rate;
struct videomode vm;
unsigned long prate;
unsigned int cfg;
int div;
- if (atmel_hlcdc_dc_mode_valid(crtc->dc, adj) != MODE_OK)
- return -EINVAL;
-
vm.vfront_porch = adj->crtc_vsync_start - adj->crtc_vdisplay;
vm.vback_porch = adj->crtc_vtotal - adj->crtc_vsync_end;
vm.vsync_len = adj->crtc_vsync_end - adj->crtc_vsync_start;
cfg = 0;
prate = clk_get_rate(crtc->dc->hlcdc->sys_clk);
- mode_rate = mode->crtc_clock * 1000;
+ mode_rate = adj->crtc_clock * 1000;
if ((prate / 2) < mode_rate) {
prate *= 2;
cfg |= ATMEL_HLCDC_CLKSEL;
cfg |= ATMEL_HLCDC_CLKDIV(div);
+ if (adj->flags & DRM_MODE_FLAG_POL_PIXDATA_NEGEDGE)
+ cfg |= ATMEL_HLCDC_CLKPOL;
+
regmap_update_bits(regmap, ATMEL_HLCDC_CFG(0),
ATMEL_HLCDC_CLKSEL | ATMEL_HLCDC_CLKDIV_MASK |
ATMEL_HLCDC_CLKPOL, cfg);
cfg = 0;
- if (mode->flags & DRM_MODE_FLAG_NVSYNC)
+ if (adj->flags & DRM_MODE_FLAG_NVSYNC)
cfg |= ATMEL_HLCDC_VSPOL;
- if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+ if (adj->flags & DRM_MODE_FLAG_NHSYNC)
cfg |= ATMEL_HLCDC_HSPOL;
+ if (adj->flags & DRM_MODE_FLAG_POL_DE_LOW)
+ cfg |= ATMEL_HLCDC_DISPPOL;
+
regmap_update_bits(regmap, ATMEL_HLCDC_CFG(5),
ATMEL_HLCDC_HSPOL | ATMEL_HLCDC_VSPOL |
ATMEL_HLCDC_VSPDLYS | ATMEL_HLCDC_VSPDLYE |
ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO |
ATMEL_HLCDC_GUARDTIME_MASK,
cfg);
+}
+
+static bool atmel_hlcdc_crtc_mode_fixup(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ return true;
+}
+
+static void atmel_hlcdc_crtc_disable(struct drm_crtc *c)
+{
+ struct drm_device *dev = c->dev;
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+ struct regmap *regmap = crtc->dc->hlcdc->regmap;
+ unsigned int status;
+
+ if (!crtc->enabled)
+ return;
+
+ drm_crtc_vblank_off(c);
+
+ pm_runtime_get_sync(dev->dev);
+
+ regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_DISP);
+ while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
+ (status & ATMEL_HLCDC_DISP))
+ cpu_relax();
+
+ regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_SYNC);
+ while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
+ (status & ATMEL_HLCDC_SYNC))
+ cpu_relax();
+
+ regmap_write(regmap, ATMEL_HLCDC_DIS, ATMEL_HLCDC_PIXEL_CLK);
+ while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
+ (status & ATMEL_HLCDC_PIXEL_CLK))
+ cpu_relax();
+
+ clk_disable_unprepare(crtc->dc->hlcdc->sys_clk);
+ pinctrl_pm_select_sleep_state(dev->dev);
- fb = plane->fb;
- plane->fb = old_fb;
+ pm_runtime_allow(dev->dev);
- return atmel_hlcdc_plane_update_with_mode(plane, c, fb, 0, 0,
- adj->hdisplay, adj->vdisplay,
- x << 16, y << 16,
- adj->hdisplay << 16,
- adj->vdisplay << 16,
- adj);
+ pm_runtime_put_sync(dev->dev);
+
+ crtc->enabled = false;
}
-int atmel_hlcdc_crtc_mode_set_base(struct drm_crtc *c, int x, int y,
- struct drm_framebuffer *old_fb)
+static void atmel_hlcdc_crtc_enable(struct drm_crtc *c)
{
- struct drm_plane *plane = c->primary;
- struct drm_framebuffer *fb = plane->fb;
- struct drm_display_mode *mode = &c->hwmode;
-
- plane->fb = old_fb;
-
- return plane->funcs->update_plane(plane, c, fb,
- 0, 0,
- mode->hdisplay,
- mode->vdisplay,
- x << 16, y << 16,
- mode->hdisplay << 16,
- mode->vdisplay << 16);
+ struct drm_device *dev = c->dev;
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+ struct regmap *regmap = crtc->dc->hlcdc->regmap;
+ unsigned int status;
+
+ if (crtc->enabled)
+ return;
+
+ pm_runtime_get_sync(dev->dev);
+
+ pm_runtime_forbid(dev->dev);
+
+ pinctrl_pm_select_default_state(dev->dev);
+ clk_prepare_enable(crtc->dc->hlcdc->sys_clk);
+
+ regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_PIXEL_CLK);
+ while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
+ !(status & ATMEL_HLCDC_PIXEL_CLK))
+ cpu_relax();
+
+
+ regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_SYNC);
+ while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
+ !(status & ATMEL_HLCDC_SYNC))
+ cpu_relax();
+
+ regmap_write(regmap, ATMEL_HLCDC_EN, ATMEL_HLCDC_DISP);
+ while (!regmap_read(regmap, ATMEL_HLCDC_SR, &status) &&
+ !(status & ATMEL_HLCDC_DISP))
+ cpu_relax();
+
+ pm_runtime_put_sync(dev->dev);
+
+ drm_crtc_vblank_on(c);
+
+ crtc->enabled = true;
}
-static void atmel_hlcdc_crtc_prepare(struct drm_crtc *crtc)
+void atmel_hlcdc_crtc_suspend(struct drm_crtc *c)
{
- atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ if (crtc->enabled) {
+ atmel_hlcdc_crtc_disable(c);
+ /* save enable state for resume */
+ crtc->enabled = true;
+ }
}
-static void atmel_hlcdc_crtc_commit(struct drm_crtc *crtc)
+void atmel_hlcdc_crtc_resume(struct drm_crtc *c)
{
- atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ if (crtc->enabled) {
+ crtc->enabled = false;
+ atmel_hlcdc_crtc_enable(c);
+ }
}
-static bool atmel_hlcdc_crtc_mode_fixup(struct drm_crtc *crtc,
- const struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
+static int atmel_hlcdc_crtc_atomic_check(struct drm_crtc *c,
+ struct drm_crtc_state *s)
{
- return true;
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
+
+ if (atmel_hlcdc_dc_mode_valid(crtc->dc, &s->adjusted_mode) != MODE_OK)
+ return -EINVAL;
+
+ return atmel_hlcdc_plane_prepare_disc_area(s);
}
-static void atmel_hlcdc_crtc_disable(struct drm_crtc *crtc)
+static void atmel_hlcdc_crtc_atomic_begin(struct drm_crtc *c)
{
- struct drm_plane *plane;
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
- atmel_hlcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
- crtc->primary->funcs->disable_plane(crtc->primary);
+ if (c->state->event) {
+ c->state->event->pipe = drm_crtc_index(c);
- drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) {
- if (plane->crtc != crtc)
- continue;
+ WARN_ON(drm_crtc_vblank_get(c) != 0);
- plane->funcs->disable_plane(crtc->primary);
- plane->crtc = NULL;
+ crtc->event = c->state->event;
+ c->state->event = NULL;
}
}
+static void atmel_hlcdc_crtc_atomic_flush(struct drm_crtc *crtc)
+{
+ /* TODO: write common plane control register if available */
+}
+
static const struct drm_crtc_helper_funcs lcdc_crtc_helper_funcs = {
.mode_fixup = atmel_hlcdc_crtc_mode_fixup,
- .dpms = atmel_hlcdc_crtc_dpms,
- .mode_set = atmel_hlcdc_crtc_mode_set,
- .mode_set_base = atmel_hlcdc_crtc_mode_set_base,
- .prepare = atmel_hlcdc_crtc_prepare,
- .commit = atmel_hlcdc_crtc_commit,
+ .mode_set = drm_helper_crtc_mode_set,
+ .mode_set_nofb = atmel_hlcdc_crtc_mode_set_nofb,
+ .mode_set_base = drm_helper_crtc_mode_set_base,
.disable = atmel_hlcdc_crtc_disable,
+ .enable = atmel_hlcdc_crtc_enable,
+ .atomic_check = atmel_hlcdc_crtc_atomic_check,
+ .atomic_begin = atmel_hlcdc_crtc_atomic_begin,
+ .atomic_flush = atmel_hlcdc_crtc_atomic_flush,
};
static void atmel_hlcdc_crtc_destroy(struct drm_crtc *c)
atmel_hlcdc_crtc_finish_page_flip(drm_crtc_to_atmel_hlcdc_crtc(c));
}
-static int atmel_hlcdc_crtc_page_flip(struct drm_crtc *c,
- struct drm_framebuffer *fb,
- struct drm_pending_vblank_event *event,
- uint32_t page_flip_flags)
-{
- struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
- struct atmel_hlcdc_plane_update_req req;
- struct drm_plane *plane = c->primary;
- struct drm_device *dev = c->dev;
- unsigned long flags;
- int ret = 0;
-
- spin_lock_irqsave(&dev->event_lock, flags);
- if (crtc->event)
- ret = -EBUSY;
- spin_unlock_irqrestore(&dev->event_lock, flags);
-
- if (ret)
- return ret;
-
- memset(&req, 0, sizeof(req));
- req.crtc_x = 0;
- req.crtc_y = 0;
- req.crtc_h = c->mode.crtc_vdisplay;
- req.crtc_w = c->mode.crtc_hdisplay;
- req.src_x = c->x << 16;
- req.src_y = c->y << 16;
- req.src_w = req.crtc_w << 16;
- req.src_h = req.crtc_h << 16;
- req.fb = fb;
-
- ret = atmel_hlcdc_plane_prepare_update_req(plane, &req, &c->hwmode);
- if (ret)
- return ret;
-
- if (event) {
- drm_vblank_get(c->dev, crtc->id);
- spin_lock_irqsave(&dev->event_lock, flags);
- crtc->event = event;
- spin_unlock_irqrestore(&dev->event_lock, flags);
- }
-
- ret = atmel_hlcdc_plane_apply_update_req(plane, &req);
- if (ret)
- crtc->event = NULL;
- else
- plane->fb = fb;
-
- return ret;
-}
-
static const struct drm_crtc_funcs atmel_hlcdc_crtc_funcs = {
- .page_flip = atmel_hlcdc_crtc_page_flip,
- .set_config = drm_crtc_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .set_config = drm_atomic_helper_set_config,
.destroy = atmel_hlcdc_crtc_destroy,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
};
int atmel_hlcdc_crtc_create(struct drm_device *dev)
if (!crtc)
return -ENOMEM;
- crtc->dpms = DRM_MODE_DPMS_OFF;
crtc->dc = dc;
ret = drm_crtc_init_with_planes(dev, &crtc->base,
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