openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge branch 'drm-next-tilcdc-atomic' of https://github.com/jsarha/linux into drm-next 

Please pull tilcdc atomic modeset support and some non critical fixes.

* 'drm-next-tilcdc-atomic' of https://github.com/jsarha/linux: (29 commits)
  drm/tilcdc: Change tilcdc_crtc_page_flip() to tilcdc_crtc_update_fb()
  drm/tilcdc: Remove unnecessary pm_runtime_get() and *_put() calls
  drm/tilcdc: Get rid of legacy dpms mechanism
  drm/tilcdc: Use drm_atomic_helper_resume/suspend()
  drm/tilcdc: Enable and disable interrupts in crtc start() and stop()
  drm/tilcdc: tfp410: Add atomic modeset helpers to connector funcs
  drm/tilcdc: tfp410: Set crtc panel info at init phase
  drm/tilcdc: panel: Add atomic modeset helpers to connector funcs
  drm/tilcdc: panel: Set crtc panel info at init phase
  drm/tilcdc: Remove tilcdc_verify_fb()
  drm/tilcdc: Remove obsolete crtc helper functions
  drm/tilcdc: Set DRIVER_ATOMIC and use atomic crtc helpers
  drm/tilcdc: Add drm_mode_config_reset() call to tilcdc_load()
  drm/tilcdc: Add atomic mode config funcs
  drm/tilcdc: Add tilcdc_crtc_atomic_check()
  drm/tilcdc: Add tilcdc_crtc_mode_set_nofb()
  drm/tilcdc: Initialize dummy primary plane from crtc init
  drm/tilcdc: Add dummy primary plane implementation
  drm/tilcdc: Make tilcdc_crtc_page_flip() work if crtc is not yet on
  drm/tilcdc: Make tilcdc_crtc_page_flip() public
  ...
This commit is contained in:
Dave Airlie 2016-08-15 16:39:28 +10:00
parent 694d0d0bb2 e0e344e620
commit db4743227b
9 changed files with 466 additions and 299 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt
View File

@ -24,6 +24,10 @@ Optional nodes:
binding follows Documentation/devicetree/bindings/graph.txt and
suppors a single port with a single endpoint.
- See also Documentation/devicetree/bindings/display/tilcdc/panel.txt and
Documentation/devicetree/bindings/display/tilcdc/tfp410.txt for connecting
tfp410 DVI encoder or lcd panel to lcdc
Example:
fb: fb@4830e000 {

1
drivers/gpu/drm/tilcdc/Makefile
View File

@ -7,6 +7,7 @@ obj-$(CONFIG_DRM_TILCDC_SLAVE_COMPAT) += tilcdc_slave_compat.o \
tilcdc_slave_compat.dtb.o
tilcdc-y := \
tilcdc_plane.o \
tilcdc_crtc.o \
tilcdc_tfp410.o \
tilcdc_panel.o \

377
drivers/gpu/drm/tilcdc/tilcdc_crtc.c
View File

@ -17,6 +17,7 @@
#include "drm_flip_work.h"
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic_helper.h>
#include "tilcdc_drv.h"
#include "tilcdc_regs.h"
@ -26,9 +27,10 @@
struct tilcdc_crtc {
struct drm_crtc base;
struct drm_plane primary;
const struct tilcdc_panel_info *info;
struct drm_pending_vblank_event *event;
int dpms;
bool enabled;
wait_queue_head_t frame_done_wq;
bool frame_done;
spinlock_t irq_lock;
@ -87,6 +89,41 @@ static void set_scanout(struct drm_crtc *crtc, struct drm_framebuffer *fb)
tilcdc_crtc->curr_fb = fb;
}
static void tilcdc_crtc_enable_irqs(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
tilcdc_clear_irqstatus(dev, 0xffffffff);
if (priv->rev == 1) {
tilcdc_set(dev, LCDC_RASTER_CTRL_REG,
LCDC_V1_UNDERFLOW_INT_ENA);
} else {
tilcdc_write(dev, LCDC_INT_ENABLE_SET_REG,
LCDC_V2_UNDERFLOW_INT_ENA |
LCDC_V2_END_OF_FRAME0_INT_ENA |
LCDC_FRAME_DONE | LCDC_SYNC_LOST);
}
}
static void tilcdc_crtc_disable_irqs(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
/* disable irqs that we might have enabled: */
if (priv->rev == 1) {
tilcdc_clear(dev, LCDC_RASTER_CTRL_REG,
LCDC_V1_UNDERFLOW_INT_ENA | LCDC_V1_PL_INT_ENA);
tilcdc_clear(dev, LCDC_DMA_CTRL_REG,
LCDC_V1_END_OF_FRAME_INT_ENA);
} else {
tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG,
LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_PL_INT_ENA |
LCDC_V2_END_OF_FRAME0_INT_ENA |
LCDC_FRAME_DONE | LCDC_SYNC_LOST);
}
}
static void reset(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
@ -100,66 +137,101 @@ static void reset(struct drm_crtc *crtc)
tilcdc_clear(dev, LCDC_CLK_RESET_REG, LCDC_CLK_MAIN_RESET);
}
static void start(struct drm_crtc *crtc)
static void tilcdc_crtc_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
if (tilcdc_crtc->enabled)
return;
pm_runtime_get_sync(dev->dev);
reset(crtc);
tilcdc_crtc_enable_irqs(dev);
tilcdc_clear(dev, LCDC_DMA_CTRL_REG, LCDC_DUAL_FRAME_BUFFER_ENABLE);
tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_PALETTE_LOAD_MODE(DATA_ONLY));
tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);
drm_crtc_vblank_on(crtc);
tilcdc_crtc->enabled = true;
}
static void stop(struct drm_crtc *crtc)
void tilcdc_crtc_disable(struct drm_crtc *crtc)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct tilcdc_drm_private *priv = dev->dev_private;
if (!tilcdc_crtc->enabled)
return;
tilcdc_crtc->frame_done = false;
tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);
/*
* if necessary wait for framedone irq which will still come
* before putting things to sleep..
*/
if (priv->rev == 2) {
int ret = wait_event_timeout(tilcdc_crtc->frame_done_wq,
tilcdc_crtc->frame_done,
msecs_to_jiffies(500));
if (ret == 0)
dev_err(dev->dev, "%s: timeout waiting for framedone\n",
__func__);
}
drm_crtc_vblank_off(crtc);
tilcdc_crtc_disable_irqs(dev);
pm_runtime_put_sync(dev->dev);
if (tilcdc_crtc->next_fb) {
drm_flip_work_queue(&tilcdc_crtc->unref_work,
tilcdc_crtc->next_fb);
tilcdc_crtc->next_fb = NULL;
}
if (tilcdc_crtc->curr_fb) {
drm_flip_work_queue(&tilcdc_crtc->unref_work,
tilcdc_crtc->curr_fb);
tilcdc_crtc->curr_fb = NULL;
}
drm_flip_work_commit(&tilcdc_crtc->unref_work, priv->wq);
tilcdc_crtc->last_vblank = ktime_set(0, 0);
tilcdc_crtc->enabled = false;
}
static bool tilcdc_crtc_is_on(struct drm_crtc *crtc)
{
return crtc->state && crtc->state->enable && crtc->state->active;
}
static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
tilcdc_crtc_disable(crtc);
of_node_put(crtc->port);
drm_crtc_cleanup(crtc);
drm_flip_work_cleanup(&tilcdc_crtc->unref_work);
}
static int tilcdc_verify_fb(struct drm_crtc *crtc, struct drm_framebuffer *fb)
{
struct drm_device *dev = crtc->dev;
unsigned int depth, bpp;
drm_fb_get_bpp_depth(fb->pixel_format, &depth, &bpp);
if (fb->pitches[0] != crtc->mode.hdisplay * bpp / 8) {
dev_err(dev->dev,
"Invalid pitch: fb and crtc widths must be the same");
return -EINVAL;
}
return 0;
}
static int tilcdc_crtc_page_flip(struct drm_crtc *crtc,
int tilcdc_crtc_update_fb(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags)
struct drm_pending_vblank_event *event)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
struct drm_device *dev = crtc->dev;
int r;
unsigned long flags;
s64 tdiff;
ktime_t next_vblank;
r = tilcdc_verify_fb(crtc, fb);
if (r)
return r;
if (tilcdc_crtc->event) {
dev_err(dev->dev, "already pending page flip!\n");
@ -170,82 +242,31 @@ static int tilcdc_crtc_page_flip(struct drm_crtc *crtc,
crtc->primary->fb = fb;
pm_runtime_get_sync(dev->dev);
spin_lock_irqsave(&tilcdc_crtc->irq_lock, flags);
next_vblank = ktime_add_us(tilcdc_crtc->last_vblank,
1000000 / crtc->hwmode.vrefresh);
if (crtc->hwmode.vrefresh && ktime_to_ns(tilcdc_crtc->last_vblank)) {
ktime_t next_vblank;
s64 tdiff;
tdiff = ktime_to_us(ktime_sub(next_vblank, ktime_get()));
next_vblank = ktime_add_us(tilcdc_crtc->last_vblank,
1000000 / crtc->hwmode.vrefresh);
if (tdiff >= TILCDC_VBLANK_SAFETY_THRESHOLD_US)
tdiff = ktime_to_us(ktime_sub(next_vblank, ktime_get()));
if (tdiff < TILCDC_VBLANK_SAFETY_THRESHOLD_US)
tilcdc_crtc->next_fb = fb;
}
if (tilcdc_crtc->next_fb != fb)
set_scanout(crtc, fb);
else
tilcdc_crtc->next_fb = fb;
tilcdc_crtc->event = event;
spin_unlock_irqrestore(&tilcdc_crtc->irq_lock, flags);
pm_runtime_put_sync(dev->dev);
return 0;
}
void tilcdc_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct tilcdc_drm_private *priv = dev->dev_private;
/* we really only care about on or off: */
if (mode != DRM_MODE_DPMS_ON)
mode = DRM_MODE_DPMS_OFF;
if (tilcdc_crtc->dpms == mode)
return;
tilcdc_crtc->dpms = mode;
if (mode == DRM_MODE_DPMS_ON) {
pm_runtime_get_sync(dev->dev);
start(crtc);
} else {
tilcdc_crtc->frame_done = false;
stop(crtc);
/*
* if necessary wait for framedone irq which will still come
* before putting things to sleep..
*/
if (priv->rev == 2) {
int ret = wait_event_timeout(
tilcdc_crtc->frame_done_wq,
tilcdc_crtc->frame_done,
msecs_to_jiffies(50));
if (ret == 0)
dev_err(dev->dev, "timeout waiting for framedone\n");
}
pm_runtime_put_sync(dev->dev);
if (tilcdc_crtc->next_fb) {
drm_flip_work_queue(&tilcdc_crtc->unref_work,
tilcdc_crtc->next_fb);
tilcdc_crtc->next_fb = NULL;
}
if (tilcdc_crtc->curr_fb) {
drm_flip_work_queue(&tilcdc_crtc->unref_work,
tilcdc_crtc->curr_fb);
tilcdc_crtc->curr_fb = NULL;
}
drm_flip_work_commit(&tilcdc_crtc->unref_work, priv->wq);
}
}
static bool tilcdc_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
@ -275,41 +296,21 @@ static bool tilcdc_crtc_mode_fixup(struct drm_crtc *crtc,
return true;
}
static void tilcdc_crtc_prepare(struct drm_crtc *crtc)
{
tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
}
static void tilcdc_crtc_commit(struct drm_crtc *crtc)
{
tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
}
static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y,
struct drm_framebuffer *old_fb)
static void tilcdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct tilcdc_drm_private *priv = dev->dev_private;
const struct tilcdc_panel_info *info = tilcdc_crtc->info;
uint32_t reg, hbp, hfp, hsw, vbp, vfp, vsw;
int ret;
ret = tilcdc_crtc_mode_valid(crtc, mode);
if (WARN_ON(ret))
return ret;
struct drm_display_mode *mode = &crtc->state->adjusted_mode;
struct drm_framebuffer *fb = crtc->primary->state->fb;
if (WARN_ON(!info))
return -EINVAL;
return;
ret = tilcdc_verify_fb(crtc, crtc->primary->fb);
if (ret)
return ret;
pm_runtime_get_sync(dev->dev);
if (WARN_ON(!fb))
return;
/* Configure the Burst Size and fifo threshold of DMA: */
reg = tilcdc_read(dev, LCDC_DMA_CTRL_REG) & ~0x00000770;
@ -330,7 +331,8 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
reg |= LCDC_DMA_BURST_SIZE(LCDC_DMA_BURST_16);
break;
default:
return -EINVAL;
dev_err(dev->dev, "invalid burst size\n");
return;
}
reg |= (info->fifo_th << 8);
tilcdc_write(dev, LCDC_DMA_CTRL_REG, reg);
@ -344,9 +346,9 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
vsw = mode->vsync_end - mode->vsync_start;
DBG("%dx%d, hbp=%u, hfp=%u, hsw=%u, vbp=%u, vfp=%u, vsw=%u",
mode->hdisplay, mode->vdisplay, hbp, hfp, hsw, vbp, vfp, vsw);
mode->hdisplay, mode->vdisplay, hbp, hfp, hsw, vbp, vfp, vsw);
/* Configure the AC Bias Period and Number of Transitions per Interrupt: */
/* Set AC Bias Period and Number of Transitions per Interrupt: */
reg = tilcdc_read(dev, LCDC_RASTER_TIMING_2_REG) & ~0x000fff00;
reg |= LCDC_AC_BIAS_FREQUENCY(info->ac_bias) |
LCDC_AC_BIAS_TRANSITIONS_PER_INT(info->ac_bias_intrpt);
@ -381,7 +383,7 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
/*
* be sure to set Bit 10 for the V2 LCDC controller,
* otherwise limited to 1024 pixels width, stopping
* 1920x1080 being suppoted.
* 1920x1080 being supported.
*/
if (priv->rev == 2) {
if ((mode->vdisplay - 1) & 0x400) {
@ -396,14 +398,15 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
/* Configure display type: */
reg = tilcdc_read(dev, LCDC_RASTER_CTRL_REG) &
~(LCDC_TFT_MODE | LCDC_MONO_8BIT_MODE | LCDC_MONOCHROME_MODE |
LCDC_V2_TFT_24BPP_MODE | LCDC_V2_TFT_24BPP_UNPACK | 0x000ff000);
LCDC_V2_TFT_24BPP_MODE | LCDC_V2_TFT_24BPP_UNPACK |
0x000ff000 /* Palette Loading Delay bits */);
reg |= LCDC_TFT_MODE; /* no monochrome/passive support */
if (info->tft_alt_mode)
reg |= LCDC_TFT_ALT_ENABLE;
if (priv->rev == 2) {
unsigned int depth, bpp;
drm_fb_get_bpp_depth(crtc->primary->fb->pixel_format, &depth, &bpp);
drm_fb_get_bpp_depth(fb->pixel_format, &depth, &bpp);
switch (bpp) {
case 16:
break;
@ -415,7 +418,7 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
break;
default:
dev_err(dev->dev, "invalid pixel format\n");
return -EINVAL;
return;
}
}
reg |= info->fdd < 12;
@ -436,12 +439,7 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
else
tilcdc_clear(dev, LCDC_RASTER_TIMING_2_REG, LCDC_SYNC_EDGE);
/*
* use value from adjusted_mode here as this might have been
* changed as part of the fixup for slave encoders to solve the
* issue where tilcdc timings are not VESA compliant
*/
if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
if (mode->flags & DRM_MODE_FLAG_NHSYNC)
tilcdc_set(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_HSYNC);
else
tilcdc_clear(dev, LCDC_RASTER_TIMING_2_REG, LCDC_INVERT_HSYNC);
@ -456,51 +454,56 @@ static int tilcdc_crtc_mode_set(struct drm_crtc *crtc,
else
tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ORDER);
drm_framebuffer_reference(crtc->primary->fb);
drm_framebuffer_reference(fb);
set_scanout(crtc, crtc->primary->fb);
set_scanout(crtc, fb);
tilcdc_crtc_update_clk(crtc);
pm_runtime_put_sync(dev->dev);
return 0;
crtc->hwmode = crtc->state->adjusted_mode;
}
static int tilcdc_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
static int tilcdc_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
struct drm_device *dev = crtc->dev;
int r;
struct drm_display_mode *mode = &state->mode;
int ret;
r = tilcdc_verify_fb(crtc, crtc->primary->fb);
if (r)
return r;
/* If we are not active we don't care */
if (!state->active)
return 0;
drm_framebuffer_reference(crtc->primary->fb);
if (state->state->planes[0].ptr != crtc->primary ||
state->state->planes[0].state == NULL ||
state->state->planes[0].state->crtc != crtc) {
dev_dbg(crtc->dev->dev, "CRTC primary plane must be present");
return -EINVAL;
}
pm_runtime_get_sync(dev->dev);
set_scanout(crtc, crtc->primary->fb);
pm_runtime_put_sync(dev->dev);
ret = tilcdc_crtc_mode_valid(crtc, mode);
if (ret) {
dev_dbg(crtc->dev->dev, "Mode \"%s\" not valid", mode->name);
return -EINVAL;
}
return 0;
}
static const struct drm_crtc_funcs tilcdc_crtc_funcs = {
.destroy = tilcdc_crtc_destroy,
.set_config = drm_crtc_helper_set_config,
.page_flip = tilcdc_crtc_page_flip,
.destroy = tilcdc_crtc_destroy,
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.reset = drm_atomic_helper_crtc_reset,
.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
};
static const struct drm_crtc_helper_funcs tilcdc_crtc_helper_funcs = {
.dpms = tilcdc_crtc_dpms,
.mode_fixup = tilcdc_crtc_mode_fixup,
.prepare = tilcdc_crtc_prepare,
.commit = tilcdc_crtc_commit,
.mode_set = tilcdc_crtc_mode_set,
.mode_set_base = tilcdc_crtc_mode_set_base,
.enable = tilcdc_crtc_enable,
.disable = tilcdc_crtc_disable,
.atomic_check = tilcdc_crtc_atomic_check,
.mode_set_nofb = tilcdc_crtc_mode_set_nofb,
};
int tilcdc_crtc_max_width(struct drm_crtc *crtc)
@ -622,18 +625,15 @@ void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc,
void tilcdc_crtc_update_clk(struct drm_crtc *crtc)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct tilcdc_drm_private *priv = dev->dev_private;
int dpms = tilcdc_crtc->dpms;
unsigned long lcd_clk;
const unsigned clkdiv = 2; /* using a fixed divider of 2 */
int ret;
pm_runtime_get_sync(dev->dev);
if (dpms == DRM_MODE_DPMS_ON)
tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
tilcdc_crtc_disable(crtc);
/* mode.clock is in KHz, set_rate wants parameter in Hz */
ret = clk_set_rate(priv->clk, crtc->mode.clock * 1000 * clkdiv);
@ -657,8 +657,8 @@ void tilcdc_crtc_update_clk(struct drm_crtc *crtc)
LCDC_V2_DMA_CLK_EN | LCDC_V2_LIDD_CLK_EN |
LCDC_V2_CORE_CLK_EN);
if (dpms == DRM_MODE_DPMS_ON)
tilcdc_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
if (tilcdc_crtc_is_on(crtc))
tilcdc_crtc_enable(crtc);
out:
pm_runtime_put_sync(dev->dev);
@ -718,31 +718,35 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc)
tilcdc_crtc->frame_intact = true;
}
if (stat & LCDC_FIFO_UNDERFLOW)
dev_err_ratelimited(dev->dev, "%s(0x%08x): FIFO underfow",
__func__, stat);
/* For revision 2 only */
if (priv->rev == 2) {
if (stat & LCDC_FRAME_DONE) {
tilcdc_crtc->frame_done = true;
wake_up(&tilcdc_crtc->frame_done_wq);
}
if (stat & LCDC_SYNC_LOST) {
dev_err_ratelimited(dev->dev, "%s(0x%08x): Sync lost",
__func__, stat);
tilcdc_crtc->frame_intact = false;
if (tilcdc_crtc->sync_lost_count++ >
SYNC_LOST_COUNT_LIMIT) {
dev_err(dev->dev, "%s(0x%08x): Sync lost flood detected, disabling the interrupt", __func__, stat);
tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG,
LCDC_SYNC_LOST);
}
}
/* Indicate to LCDC that the interrupt service routine has
* completed, see 13.3.6.1.6 in AM335x TRM.
*/
tilcdc_write(dev, LCDC_END_OF_INT_IND_REG, 0);
}
if (stat & LCDC_SYNC_LOST) {
dev_err_ratelimited(dev->dev, "%s(0x%08x): Sync lost",
__func__, stat);
tilcdc_crtc->frame_intact = false;
if (tilcdc_crtc->sync_lost_count++ > SYNC_LOST_COUNT_LIMIT) {
dev_err(dev->dev,
"%s(0x%08x): Sync lost flood detected, disabling the interrupt",
__func__, stat);
tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG,
LCDC_SYNC_LOST);
}
}
if (stat & LCDC_FIFO_UNDERFLOW)
dev_err_ratelimited(dev->dev, "%s(0x%08x): FIFO underfow",
__func__, stat);
return IRQ_HANDLED;
}
@ -761,7 +765,10 @@ struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev)
crtc = &tilcdc_crtc->base;
tilcdc_crtc->dpms = DRM_MODE_DPMS_OFF;
ret = tilcdc_plane_init(dev, &tilcdc_crtc->primary);
if (ret < 0)
goto fail;
init_waitqueue_head(&tilcdc_crtc->frame_done_wq);
drm_flip_work_init(&tilcdc_crtc->unref_work,
@ -769,7 +776,11 @@ struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev)
spin_lock_init(&tilcdc_crtc->irq_lock);
ret = drm_crtc_init(dev, crtc, &tilcdc_crtc_funcs);
ret = drm_crtc_init_with_planes(dev, crtc,
&tilcdc_crtc->primary,
NULL,
&tilcdc_crtc_funcs,
"tilcdc crtc");
if (ret < 0)
goto fail;

207
drivers/gpu/drm/tilcdc/tilcdc_drv.c
View File

@ -20,6 +20,8 @@
#include <linux/component.h>
#include <linux/pinctrl/consumer.h>
#include <linux/suspend.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include "tilcdc_drv.h"
#include "tilcdc_regs.h"
@ -59,9 +61,84 @@ static void tilcdc_fb_output_poll_changed(struct drm_device *dev)
drm_fbdev_cma_hotplug_event(priv->fbdev);
}
int tilcdc_atomic_check(struct drm_device *dev,
struct drm_atomic_state *state)
{
int ret;
ret = drm_atomic_helper_check_modeset(dev, state);
if (ret)
return ret;
ret = drm_atomic_helper_check_planes(dev, state);
if (ret)
return ret;
/*
* tilcdc ->atomic_check can update ->mode_changed if pixel format
* changes, hence will we check modeset changes again.
*/
ret = drm_atomic_helper_check_modeset(dev, state);
if (ret)
return ret;
return ret;
}
static int tilcdc_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool async)
{
int ret;
ret = drm_atomic_helper_prepare_planes(dev, state);
if (ret)
return ret;
drm_atomic_helper_swap_state(state, true);
/*
* Everything below can be run asynchronously without the need to grab
* any modeset locks at all under one condition: It must be guaranteed
* that the asynchronous work has either been cancelled (if the driver
* supports it, which at least requires that the framebuffers get
* cleaned up with drm_atomic_helper_cleanup_planes()) or completed
* before the new state gets committed on the software side with
* drm_atomic_helper_swap_state().
*
* This scheme allows new atomic state updates to be prepared and
* checked in parallel to the asynchronous completion of the previous
* update. Which is important since compositors need to figure out the
* composition of the next frame right after having submitted the
* current layout.
*/
/* Keep HW on while we commit the state. */
pm_runtime_get_sync(dev->dev);
drm_atomic_helper_commit_modeset_disables(dev, state);
drm_atomic_helper_commit_planes(dev, state, false);
drm_atomic_helper_commit_modeset_enables(dev, state);
/* Now HW should remain on if need becase the crtc is enabled */
pm_runtime_put_sync(dev->dev);
drm_atomic_helper_wait_for_vblanks(dev, state);
drm_atomic_helper_cleanup_planes(dev, state);
drm_atomic_state_free(state);
return 0;
}
static const struct drm_mode_config_funcs mode_config_funcs = {
.fb_create = tilcdc_fb_create,
.output_poll_changed = tilcdc_fb_output_poll_changed,
.atomic_check = tilcdc_atomic_check,
.atomic_commit = tilcdc_commit,
};
static int modeset_init(struct drm_device *dev)
@ -112,7 +189,7 @@ static int tilcdc_unload(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
tilcdc_crtc_dpms(priv->crtc, DRM_MODE_DPMS_OFF);
tilcdc_crtc_disable(priv->crtc);
tilcdc_remove_external_encoders(dev);
@ -121,9 +198,7 @@ static int tilcdc_unload(struct drm_device *dev)
drm_mode_config_cleanup(dev);
drm_vblank_cleanup(dev);
pm_runtime_get_sync(dev->dev);
drm_irq_uninstall(dev);
pm_runtime_put_sync(dev->dev);
#ifdef CONFIG_CPU_FREQ
cpufreq_unregister_notifier(&priv->freq_transition,
@ -146,8 +221,6 @@ static int tilcdc_unload(struct drm_device *dev)
return 0;
}
static size_t tilcdc_num_regs(void);
static int tilcdc_load(struct drm_device *dev, unsigned long flags)
{
struct platform_device *pdev = dev->platformdev;
@ -159,11 +232,7 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
int ret;
priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
if (priv)
priv->saved_register =
devm_kcalloc(dev->dev, tilcdc_num_regs(),
sizeof(*priv->saved_register), GFP_KERNEL);
if (!priv || !priv->saved_register) {
if (!priv) {
dev_err(dev->dev, "failed to allocate private data\n");
return -ENOMEM;
}
@ -279,9 +348,7 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
goto fail_external_cleanup;
}
pm_runtime_get_sync(dev->dev);
ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
pm_runtime_put_sync(dev->dev);
if (ret < 0) {
dev_err(dev->dev, "failed to install IRQ handler\n");
goto fail_vblank_cleanup;
@ -295,6 +362,9 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
}
drm_helper_disable_unused_functions(dev);
drm_mode_config_reset(dev);
priv->fbdev = drm_fbdev_cma_init(dev, bpp,
dev->mode_config.num_crtc,
dev->mode_config.num_connector);
@ -308,9 +378,7 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
return 0;
fail_irq_uninstall:
pm_runtime_get_sync(dev->dev);
drm_irq_uninstall(dev);
pm_runtime_put_sync(dev->dev);
fail_vblank_cleanup:
drm_vblank_cleanup(dev);
@ -361,45 +429,6 @@ static irqreturn_t tilcdc_irq(int irq, void *arg)
return tilcdc_crtc_irq(priv->crtc);
}
static void tilcdc_irq_preinstall(struct drm_device *dev)
{
tilcdc_clear_irqstatus(dev, 0xffffffff);
}
static int tilcdc_irq_postinstall(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
/* enable FIFO underflow irq: */
if (priv->rev == 1) {
tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_V1_UNDERFLOW_INT_ENA);
} else {
tilcdc_write(dev, LCDC_INT_ENABLE_SET_REG,
LCDC_V2_UNDERFLOW_INT_ENA |
LCDC_V2_END_OF_FRAME0_INT_ENA |
LCDC_FRAME_DONE | LCDC_SYNC_LOST);
}
return 0;
}
static void tilcdc_irq_uninstall(struct drm_device *dev)
{
struct tilcdc_drm_private *priv = dev->dev_private;
/* disable irqs that we might have enabled: */
if (priv->rev == 1) {
tilcdc_clear(dev, LCDC_RASTER_CTRL_REG,
LCDC_V1_UNDERFLOW_INT_ENA | LCDC_V1_PL_INT_ENA);
tilcdc_clear(dev, LCDC_DMA_CTRL_REG, LCDC_V1_END_OF_FRAME_INT_ENA);
} else {
tilcdc_write(dev, LCDC_INT_ENABLE_CLR_REG,
LCDC_V2_UNDERFLOW_INT_ENA | LCDC_V2_PL_INT_ENA |
LCDC_V2_END_OF_FRAME0_INT_ENA |
LCDC_FRAME_DONE | LCDC_SYNC_LOST);
}
}
static int tilcdc_enable_vblank(struct drm_device *dev, unsigned int pipe)
{
return 0;
@ -410,7 +439,7 @@ static void tilcdc_disable_vblank(struct drm_device *dev, unsigned int pipe)
return;
}
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_PM_SLEEP)
#if defined(CONFIG_DEBUG_FS)
static const struct {
const char *name;
uint8_t rev;
@ -441,15 +470,6 @@ static const struct {
#undef REG
};
static size_t tilcdc_num_regs(void)
{
return ARRAY_SIZE(registers);
}
#else
static size_t tilcdc_num_regs(void)
{
return 0;
}
#endif
#ifdef CONFIG_DEBUG_FS
@ -537,14 +557,11 @@ static const struct file_operations fops = {
static struct drm_driver tilcdc_driver = {
.driver_features = (DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET |
DRIVER_PRIME),
DRIVER_PRIME | DRIVER_ATOMIC),
.load = tilcdc_load,
.unload = tilcdc_unload,
.lastclose = tilcdc_lastclose,
.irq_handler = tilcdc_irq,
.irq_preinstall = tilcdc_irq_preinstall,
.irq_postinstall = tilcdc_irq_postinstall,
.irq_uninstall = tilcdc_irq_uninstall,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = tilcdc_enable_vblank,
.disable_vblank = tilcdc_disable_vblank,
@ -584,28 +601,12 @@ static int tilcdc_pm_suspend(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct tilcdc_drm_private *priv = ddev->dev_private;
unsigned i, n = 0;
drm_kms_helper_poll_disable(ddev);
priv->saved_state = drm_atomic_helper_suspend(ddev);
/* Select sleep pin state */
pinctrl_pm_select_sleep_state(dev);
if (pm_runtime_suspended(dev)) {
priv->ctx_valid = false;
return 0;
}
/* Disable the LCDC controller, to avoid locking up the PRCM */
tilcdc_crtc_dpms(priv->crtc, DRM_MODE_DPMS_OFF);
/* Save register state: */
for (i = 0; i < ARRAY_SIZE(registers); i++)
if (registers[i].save && (priv->rev >= registers[i].rev))
priv->saved_register[n++] = tilcdc_read(ddev, registers[i].reg);
priv->ctx_valid = true;
return 0;
}
@ -613,23 +614,15 @@ static int tilcdc_pm_resume(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct tilcdc_drm_private *priv = ddev->dev_private;
unsigned i, n = 0;
int ret = 0;
/* Select default pin state */
pinctrl_pm_select_default_state(dev);
if (priv->ctx_valid == true) {
/* Restore register state: */
for (i = 0; i < ARRAY_SIZE(registers); i++)
if (registers[i].save &&
(priv->rev >= registers[i].rev))
tilcdc_write(ddev, registers[i].reg,
priv->saved_register[n++]);
}
if (priv->saved_state)
ret = drm_atomic_helper_resume(ddev, priv->saved_state);
drm_kms_helper_poll_enable(ddev);
return 0;
return ret;
}
#endif
@ -648,6 +641,12 @@ static int tilcdc_bind(struct device *dev)
static void tilcdc_unbind(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
/* Check if a subcomponent has already triggered the unloading. */
if (!ddev->dev_private)
return;
drm_put_dev(dev_get_drvdata(dev));
}
@ -680,17 +679,15 @@ static int tilcdc_pdev_probe(struct platform_device *pdev)
static int tilcdc_pdev_remove(struct platform_device *pdev)
{
struct drm_device *ddev = dev_get_drvdata(&pdev->dev);
struct tilcdc_drm_private *priv = ddev->dev_private;
int ret;
/* Check if a subcomponent has already triggered the unloading. */
if (!priv)
return 0;
if (priv->is_componentized)
component_master_del(&pdev->dev, &tilcdc_comp_ops);
else
ret = tilcdc_get_external_components(&pdev->dev, NULL);
if (ret < 0)
return ret;
else if (ret == 0)
drm_put_dev(platform_get_drvdata(pdev));
else
component_master_del(&pdev->dev, &tilcdc_comp_ops);
return 0;
}

12
drivers/gpu/drm/tilcdc/tilcdc_drv.h
View File

@ -65,9 +65,8 @@ struct tilcdc_drm_private {
*/
uint32_t max_width;
/* register contents saved across suspend/resume: */
u32 *saved_register;
bool ctx_valid;
/* The context for pm susped/resume cycle is stored here */
struct drm_atomic_state *saved_state;
#ifdef CONFIG_CPU_FREQ
struct notifier_block freq_transition;
@ -171,6 +170,11 @@ void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc,
bool simulate_vesa_sync);
int tilcdc_crtc_mode_valid(struct drm_crtc *crtc, struct drm_display_mode *mode);
int tilcdc_crtc_max_width(struct drm_crtc *crtc);
void tilcdc_crtc_dpms(struct drm_crtc *crtc, int mode);
void tilcdc_crtc_disable(struct drm_crtc *crtc);
int tilcdc_crtc_update_fb(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event);
int tilcdc_plane_init(struct drm_device *dev, struct drm_plane *plane);
#endif /* __TILCDC_DRV_H__ */

13
drivers/gpu/drm/tilcdc/tilcdc_external.c
View File

@ -138,12 +138,21 @@ static int dev_match_of(struct device *dev, void *data)
int tilcdc_get_external_components(struct device *dev,
struct component_match **match)
{
struct device_node *node;
struct device_node *ep = NULL;
int count = 0;
while ((ep = of_graph_get_next_endpoint(dev->of_node, ep))) {
struct device_node *node;
/* Avoid error print by of_graph_get_next_endpoint() if there
* is no ports present.
*/
node = of_get_child_by_name(dev->of_node, "ports");
if (!node)
node = of_get_child_by_name(dev->of_node, "port");
if (!node)
return 0;
of_node_put(node);
while ((ep = of_graph_get_next_endpoint(dev->of_node, ep))) {
node = of_graph_get_remote_port_parent(ep);
if (!node && !of_device_is_available(node)) {
of_node_put(node);

11
drivers/gpu/drm/tilcdc/tilcdc_panel.c
View File

@ -22,6 +22,7 @@
#include <video/display_timing.h>
#include <video/of_display_timing.h>
#include <video/videomode.h>
#include <drm/drm_atomic_helper.h>
#include "tilcdc_drv.h"
@ -64,9 +65,7 @@ static void panel_encoder_dpms(struct drm_encoder *encoder, int mode)
static void panel_encoder_prepare(struct drm_encoder *encoder)
{
struct panel_encoder *panel_encoder = to_panel_encoder(encoder);
panel_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
tilcdc_crtc_set_panel_info(encoder->crtc, panel_encoder->mod->info);
}
static void panel_encoder_commit(struct drm_encoder *encoder)
@ -196,9 +195,12 @@ static struct drm_encoder *panel_connector_best_encoder(
static const struct drm_connector_funcs panel_connector_funcs = {
.destroy = panel_connector_destroy,
.dpms = drm_helper_connector_dpms,
.dpms = drm_atomic_helper_connector_dpms,
.detect = panel_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static const struct drm_connector_helper_funcs panel_connector_helper_funcs = {
@ -268,6 +270,9 @@ static int panel_modeset_init(struct tilcdc_module *mod, struct drm_device *dev)
priv->encoders[priv->num_encoders++] = encoder;
priv->connectors[priv->num_connectors++] = connector;
tilcdc_crtc_set_panel_info(priv->crtc,
to_panel_encoder(encoder)->mod->info);
return 0;
}

132
drivers/gpu/drm/tilcdc/tilcdc_plane.c Normal file
View File

@ -0,0 +1,132 @@
/*
* Copyright (C) 2015 Texas Instruments
* Author: Jyri Sarha <jsarha@ti.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic_helper.h>
#include <uapi/drm/drm_fourcc.h>
#include "tilcdc_drv.h"
static const u32 tilcdc_formats[] = { DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
DRM_FORMAT_XRGB8888 };
static struct drm_plane_funcs tilcdc_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_plane_cleanup,
.set_property = drm_atomic_helper_plane_set_property,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static int tilcdc_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_crtc_state *crtc_state;
struct drm_plane_state *old_state = plane->state;
unsigned int depth, bpp;
if (!state->crtc)
return 0;
if (WARN_ON(!state->fb))
return -EINVAL;
if (state->crtc_x || state->crtc_y) {
dev_err(plane->dev->dev, "%s: crtc position must be zero.",
__func__);
return -EINVAL;
}
crtc_state = drm_atomic_get_existing_crtc_state(state->state,
state->crtc);
/* we should have a crtc state if the plane is attached to a crtc */
if (WARN_ON(!crtc_state))
return 0;
if (crtc_state->mode.hdisplay != state->crtc_w ||
crtc_state->mode.vdisplay != state->crtc_h) {
dev_err(plane->dev->dev,
"%s: Size must match mode (%dx%d == %dx%d)", __func__,
crtc_state->mode.hdisplay, crtc_state->mode.vdisplay,
state->crtc_w, state->crtc_h);
return -EINVAL;
}
drm_fb_get_bpp_depth(state->fb->pixel_format, &depth, &bpp);
if (state->fb->pitches[0] != crtc_state->mode.hdisplay * bpp / 8) {
dev_err(plane->dev->dev,
"Invalid pitch: fb and crtc widths must be the same");
return -EINVAL;
}
if (state->fb && old_state->fb &&
state->fb->pixel_format != old_state->fb->pixel_format) {
dev_dbg(plane->dev->dev,
"%s(): pixel format change requires mode_change\n",
__func__);
crtc_state->mode_changed = true;
}
return 0;
}
static void tilcdc_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_plane_state *state = plane->state;
if (!state->crtc)
return;
if (WARN_ON(!state->fb || !state->crtc->state))
return;
tilcdc_crtc_update_fb(state->crtc,
state->fb,
state->crtc->state->event);
}
static const struct drm_plane_helper_funcs plane_helper_funcs = {
.atomic_check = tilcdc_plane_atomic_check,
.atomic_update = tilcdc_plane_atomic_update,
};
int tilcdc_plane_init(struct drm_device *dev,
struct drm_plane *plane)
{
int ret;
ret = drm_plane_init(dev, plane, 1,
&tilcdc_plane_funcs,
tilcdc_formats,
ARRAY_SIZE(tilcdc_formats),
true);
if (ret) {
dev_err(dev->dev, "Failed to initialize plane: %d\n", ret);
return ret;
}
drm_plane_helper_add(plane, &plane_helper_funcs);
return 0;
}

8
drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
View File

@ -20,6 +20,7 @@
#include <linux/of_gpio.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/consumer.h>
#include <drm/drm_atomic_helper.h>
#include "tilcdc_drv.h"
@ -75,7 +76,6 @@ static void tfp410_encoder_dpms(struct drm_encoder *encoder, int mode)
static void tfp410_encoder_prepare(struct drm_encoder *encoder)
{
tfp410_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
tilcdc_crtc_set_panel_info(encoder->crtc, &dvi_info);
}
static void tfp410_encoder_commit(struct drm_encoder *encoder)
@ -201,9 +201,12 @@ static struct drm_encoder *tfp410_connector_best_encoder(
static const struct drm_connector_funcs tfp410_connector_funcs = {
.destroy = tfp410_connector_destroy,
.dpms = drm_helper_connector_dpms,
.dpms = drm_atomic_helper_connector_dpms,
.detect = tfp410_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static const struct drm_connector_helper_funcs tfp410_connector_helper_funcs = {
@ -276,6 +279,7 @@ static int tfp410_modeset_init(struct tilcdc_module *mod, struct drm_device *dev
priv->encoders[priv->num_encoders++] = encoder;
priv->connectors[priv->num_connectors++] = connector;
tilcdc_crtc_set_panel_info(priv->crtc, &dvi_info);
return 0;
}