- 根目录:
- drivers
- gpu
- drm
- shmobile
- shmob_drm_crtc.c
/*
* shmob_drm_crtc.c -- SH Mobile DRM CRTCs
*
* Copyright (C) 2012 Renesas Electronics Corporation
*
* Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/backlight.h>
#include <linux/clk.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include <video/sh_mobile_meram.h>
#include "shmob_drm_backlight.h"
#include "shmob_drm_crtc.h"
#include "shmob_drm_drv.h"
#include "shmob_drm_kms.h"
#include "shmob_drm_plane.h"
#include "shmob_drm_regs.h"
/*
* TODO: panel support
*/
/* -----------------------------------------------------------------------------
* Clock management
*/
static int shmob_drm_clk_on(struct shmob_drm_device *sdev)
{
int ret;
if (sdev->clock) {
ret = clk_prepare_enable(sdev->clock);
if (ret < 0)
return ret;
}
#if 0
if (sdev->meram_dev && sdev->meram_dev->pdev)
pm_runtime_get_sync(&sdev->meram_dev->pdev->dev);
#endif
return 0;
}
static void shmob_drm_clk_off(struct shmob_drm_device *sdev)
{
#if 0
if (sdev->meram_dev && sdev->meram_dev->pdev)
pm_runtime_put_sync(&sdev->meram_dev->pdev->dev);
#endif
if (sdev->clock)
clk_disable_unprepare(sdev->clock);
}
/* -----------------------------------------------------------------------------
* CRTC
*/
static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
{
struct drm_crtc *crtc = &scrtc->crtc;
struct shmob_drm_device *sdev = crtc->dev->dev_private;
const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
const struct drm_display_mode *mode = &crtc->mode;
u32 value;
value = sdev->ldmt1r
| ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
| ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
| ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
| ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
| ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
| ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
| ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
lcdc_write(sdev, LDMT1R, value);
if (idata->interface >= SHMOB_DRM_IFACE_SYS8A &&
idata->interface <= SHMOB_DRM_IFACE_SYS24) {
/* Setup SYS bus. */
value = (idata->sys.cs_setup << LDMT2R_CSUP_SHIFT)
| (idata->sys.vsync_active_high ? LDMT2R_RSV : 0)
| (idata->sys.vsync_dir_input ? LDMT2R_VSEL : 0)
| (idata->sys.write_setup << LDMT2R_WCSC_SHIFT)
| (idata->sys.write_cycle << LDMT2R_WCEC_SHIFT)
| (idata->sys.write_strobe << LDMT2R_WCLW_SHIFT);
lcdc_write(sdev, LDMT2R, value);
value = (idata->sys.read_latch << LDMT3R_RDLC_SHIFT)
| (idata->sys.read_setup << LDMT3R_RCSC_SHIFT)
| (idata->sys.read_cycle << LDMT3R_RCEC_SHIFT)
| (idata->sys.read_strobe << LDMT3R_RCLW_SHIFT);
lcdc_write(sdev, LDMT3R, value);
}
value = ((mode->hdisplay / 8) << 16) /* HDCN */
| (mode->htotal / 8); /* HTCN */
lcdc_write(sdev, LDHCNR, value);
value = (((mode->hsync_end - mode->hsync_start) / 8) << 16) /* HSYNW */
| (mode->hsync_start / 8); /* HSYNP */
lcdc_write(sdev, LDHSYNR, value);
value = ((mode->hdisplay & 7) << 24) | ((mode->htotal & 7) << 16)
| (((mode->hsync_end - mode->hsync_start) & 7) << 8)
| (mode->hsync_start & 7);
lcdc_write(sdev, LDHAJR, value);
value = ((mode->vdisplay) << 16) /* VDLN */
| mode->vtotal; /* VTLN */
lcdc_write(sdev, LDVLNR, value);
value = ((mode->vsync_end - mode->vsync_start) << 16) /* VSYNW */
| mode->vsync_start; /* VSYNP */
lcdc_write(sdev, LDVSYNR, value);
}
static void shmob_drm_crtc_start_stop(struct shmob_drm_crtc *scrtc, bool start)
{
struct shmob_drm_device *sdev = scrtc->crtc.dev->dev_private;
u32 value;
value = lcdc_read(sdev, LDCNT2R);
if (start)
lcdc_write(sdev, LDCNT2R, value | LDCNT2R_DO);
else
lcdc_write(sdev, LDCNT2R, value & ~LDCNT2R_DO);
/* Wait until power is applied/stopped. */
while (1) {
value = lcdc_read(sdev, LDPMR) & LDPMR_LPS;
if ((start && value) || (!start && !value))
break;
cpu_relax();
}
if (!start) {
/* Stop the dot clock. */
lcdc_write(sdev, LDDCKSTPR, LDDCKSTPR_DCKSTP);
}
}
/*
* shmob_drm_crtc_start - Configure and start the LCDC
* @scrtc: the SH Mobile CRTC
*
* Configure and start the LCDC device. External devices (clocks, MERAM, panels,
* ...) are not touched by this function.
*/
static void shmob_drm_crtc_start(struct shmob_drm_crtc *scrtc)
{
struct drm_crtc *crtc = &scrtc->crtc;
struct shmob_drm_device *sdev = crtc->dev->dev_private;
const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
const struct shmob_drm_format_info *format;
struct drm_device *dev = sdev->ddev;
struct drm_plane *plane;
u32 value;
int ret;
if (scrtc->started)
return;
format = shmob_drm_format_info(crtc->primary->fb->pixel_format);
if (WARN_ON(format == NULL))
return;
/* Enable clocks before accessing the hardware. */
ret = shmob_drm_clk_on(sdev);
if (ret < 0)
return;
/* Reset and enable the LCDC. */
lcdc_write(sdev, LDCNT2R, lcdc_read(sdev, LDCNT2R) | LDCNT2R_BR);
lcdc_wait_bit(sdev, LDCNT2R, LDCNT2R_BR, 0);
lcdc_write(sdev, LDCNT2R, LDCNT2R_ME);
/* Stop the LCDC first and disable all interrupts. */
shmob_drm_crtc_start_stop(scrtc, false);
lcdc_write(sdev, LDINTR, 0);
/* Configure power supply, dot clocks and start them. */
lcdc_write(sdev, LDPMR, 0);
value = sdev->lddckr;
if (idata->clk_div) {
/* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
* denominator.
*/
lcdc_write(sdev, LDDCKPAT1R, 0);
lcdc_write(sdev, LDDCKPAT2R, (1 << (idata->clk_div / 2)) - 1);
if (idata->clk_div == 1)
value |= LDDCKR_MOSEL;
else
value |= idata->clk_div;
}
lcdc_write(sdev, LDDCKR, value);
lcdc_write(sdev, LDDCKSTPR, 0);
lcdc_wait_bit(sdev, LDDCKSTPR, ~0, 0);
/* TODO: Setup SYS panel */
/* Setup geometry, format, frame buffer memory and operation mode. */
shmob_drm_crtc_setup_geometry(scrtc);
/* TODO: Handle YUV colorspaces. Hardcode REC709 for now. */
lcdc_write(sdev, LDDFR, format->lddfr | LDDFR_CF1);
lcdc_write(sdev, LDMLSR, scrtc->line_size);
lcdc_write(sdev, LDSA1R, scrtc->dma[0]);
if (format->yuv)
lcdc_write(sdev, LDSA2R, scrtc->dma[1]);
lcdc_write(sdev, LDSM1R, 0);
/* Word and long word swap. */
switch (format->fourcc) {
case DRM_FORMAT_RGB565:
case DRM_FORMAT_NV21:
case DRM_FORMAT_NV61:
case DRM_FORMAT_NV42:
value = LDDDSR_LS | LDDDSR_WS;
break;
case DRM_FORMAT_RGB888:
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV16:
case DRM_FORMAT_NV24:
value = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
break;
case DRM_FORMAT_ARGB8888:
default:
value = LDDDSR_LS;
break;
}
lcdc_write(sdev, LDDDSR, value);
/* Setup planes. */
drm_for_each_legacy_plane(plane, dev) {
if (plane->crtc == crtc)
shmob_drm_plane_setup(plane);
}
/* Enable the display output. */
lcdc_write(sdev, LDCNT1R, LDCNT1R_DE);
shmob_drm_crtc_start_stop(scrtc, true);
scrtc->started = true;
}
static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc)
{
struct drm_crtc *crtc = &scrtc->crtc;
struct shmob_drm_device *sdev = crtc->dev->dev_private;
if (!scrtc->started)
return;
/* Disable the MERAM cache. */
if (scrtc->cache) {
sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
scrtc->cache = NULL;
}
/* Stop the LCDC. */
shmob_drm_crtc_start_stop(scrtc, false);
/* Disable the display output. */
lcdc_write(sdev, LDCNT1R, 0);
/* Stop clocks. */
shmob_drm_clk_off(sdev);
scrtc->started = false;
}
void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc)
{
shmob_drm_crtc_stop(scrtc);
}
void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc)
{
if (scrtc->dpms != DRM_MODE_DPMS_ON)
return;
shmob_drm_crtc_start(scrtc);
}
static void shmob_drm_crtc_compute_base(struct shmob_drm_crtc *scrtc,
int x, int y)
{
struct drm_crtc *crtc = &scrtc->crtc;
struct drm_framebuffer *fb = crtc->primary->fb;
struct shmob_drm_device *sdev = crtc->dev->dev_private;
struct drm_gem_cma_object *gem;
unsigned int bpp;
bpp = scrtc->format->yuv ? 8 : scrtc->format->bpp;
gem = drm_fb_cma_get_gem_obj(fb, 0);
scrtc->dma[0] = gem->paddr + fb->offsets[0]
+ y * fb->pitches[0] + x * bpp / 8;
if (scrtc->format->yuv) {
bpp = scrtc->format->bpp - 8;
gem = drm_fb_cma_get_gem_obj(fb, 1);
scrtc->dma[1] = gem->paddr + fb->offsets[1]
+ y / (bpp == 4 ? 2 : 1) * fb->pitches[1]
+ x * (bpp == 16 ? 2 : 1);
}
if (scrtc->cache)
sh_mobile_meram_cache_update(sdev->meram, scrtc->cache,
scrtc->dma[0], scrtc->dma[1],
&scrtc->dma[0], &scrtc->dma[1]);
}
static void shmob_drm_crtc_update_base(struct shmob_drm_crtc *scrtc)
{
struct drm_crtc *crtc = &scrtc->crtc;
struct shmob_drm_device *sdev = crtc->dev->dev_private;
shmob_drm_crtc_compute_base(scrtc, crtc->x, crtc->y);
lcdc_write_mirror(sdev, LDSA1R, scrtc->dma[0]);
if (scrtc->format->yuv)
lcdc_write_mirror(sdev, LDSA2R, scrtc->dma[1]);
lcdc_write(sdev, LDRCNTR, lcdc_read(sdev, LDRCNTR) ^ LDRCNTR_MRS);
}
#define to_shmob_crtc(c) container_of(c, struct shmob_drm_crtc, crtc)
static void shmob_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
if (scrtc->dpms == mode)
return;
if (mode == DRM_MODE_DPMS_ON)
shmob_drm_crtc_start(scrtc);
else
shmob_drm_crtc_stop(scrtc);
scrtc->dpms = mode;
}
static bool shmob_drm_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static void shmob_drm_crtc_mode_prepare(struct drm_crtc *crtc)
{
shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
}
static int shmob_drm_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)
{
struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
struct shmob_drm_device *sdev = crtc->dev->dev_private;
const struct sh_mobile_meram_cfg *mdata = sdev->pdata->meram;
const struct shmob_drm_format_info *format;
void *cache;
format = shmob_drm_format_info(crtc->primary->fb->pixel_format);
if (format == NULL) {
dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
crtc->primary->fb->pixel_format);
return -EINVAL;
}
scrtc->format = format;
scrtc->line_size = crtc->primary->fb->pitches[0];
if (sdev->meram) {
/* Enable MERAM cache if configured. We need to de-init
* configured ICBs before we can re-initialize them.
*/
if (scrtc->cache) {
sh_mobile_meram_cache_free(sdev->meram, scrtc->cache);
scrtc->cache = NULL;
}
cache = sh_mobile_meram_cache_alloc(sdev->meram, mdata,
crtc->primary->fb->pitches[0],
adjusted_mode->vdisplay,
format->meram,
&scrtc->line_size);
if (!IS_ERR(cache))
scrtc->cache = cache;
}
shmob_drm_crtc_compute_base(scrtc, x, y);
return 0;
}
static void shmob_drm_crtc_mode_commit(struct drm_crtc *crtc)
{
shmob_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
}
static int shmob_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
shmob_drm_crtc_update_base(to_shmob_crtc(crtc));
return 0;
}
static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
.dpms = shmob_drm_crtc_dpms,
.mode_fixup = shmob_drm_crtc_mode_fixup,
.prepare = shmob_drm_crtc_mode_prepare,
.commit = shmob_drm_crtc_mode_commit,
.mode_set = shmob_drm_crtc_mode_set,
.mode_set_base = shmob_drm_crtc_mode_set_base,
};
void shmob_drm_crtc_cancel_page_flip(struct shmob_drm_crtc *scrtc,
struct drm_file *file)
{
struct drm_pending_vblank_event *event;
struct drm_device *dev = scrtc->crtc.dev;
unsigned long flags;
/* Destroy the pending vertical blanking event associated with the
* pending page flip, if any, and disable vertical blanking interrupts.
*/
spin_lock_irqsave(&dev->event_lock, flags);
event = scrtc->event;
if (event && event->base.file_priv == file) {
scrtc->event = NULL;
event->base.destroy(&event->base);
drm_vblank_put(dev, 0);
}
spin_unlock_irqrestore(&dev->event_lock, flags);
}
void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
{
struct drm_pending_vblank_event *event;
struct drm_device *dev = scrtc->crtc.dev;
unsigned long flags;
spin_lock_irqsave(&dev->event_lock, flags);
event = scrtc->event;
scrtc->event = NULL;
if (event) {
drm_send_vblank_event(dev, 0, event);
drm_vblank_put(dev, 0);
}
spin_unlock_irqrestore(&dev->event_lock, flags);
}
static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags)
{
struct shmob_drm_crtc *scrtc = to_shmob_crtc(crtc);
struct drm_device *dev = scrtc->crtc.dev;
unsigned long flags;
spin_lock_irqsave(&dev->event_lock, flags);
if (scrtc->event != NULL) {
spin_unlock_irqrestore(&dev->event_lock, flags);
return -EBUSY;
}
spin_unlock_irqrestore(&dev->event_lock, flags);
crtc->primary->fb = fb;
shmob_drm_crtc_update_base(scrtc);
if (event) {
event->pipe = 0;
drm_vblank_get(dev, 0);
spin_lock_irqsave(&dev->event_lock, flags);
scrtc->event = event;
spin_unlock_irqrestore(&dev->event_lock, flags);
}
return 0;
}
static const struct drm_crtc_funcs crtc_funcs = {
.destroy = drm_crtc_cleanup,
.set_config = drm_crtc_helper_set_config,
.page_flip = shmob_drm_crtc_page_flip,
};
int shmob_drm_crtc_create(struct shmob_drm_device *sdev)
{
struct drm_crtc *crtc = &sdev->crtc.crtc;
int ret;
sdev->crtc.dpms = DRM_MODE_DPMS_OFF;
ret = drm_crtc_init(sdev->ddev, crtc, &crtc_funcs);
if (ret < 0)
return ret;
drm_crtc_helper_add(crtc, &crtc_helper_funcs);
return 0;
}
/* -----------------------------------------------------------------------------
* Encoder
*/
#define to_shmob_encoder(e) \
container_of(e, struct shmob_drm_encoder, encoder)
static void shmob_drm_encoder_dpms(struct drm_encoder *encoder, int mode)
{
struct shmob_drm_encoder *senc = to_shmob_encoder(encoder);
struct shmob_drm_device *sdev = encoder->dev->dev_private;
struct shmob_drm_connector *scon = &sdev->connector;
if (senc->dpms == mode)
return;
shmob_drm_backlight_dpms(scon, mode);
senc->dpms = mode;
}
static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = encoder->dev;
struct shmob_drm_device *sdev = dev->dev_private;
struct drm_connector *connector = &sdev->connector.connector;
const struct drm_display_mode *panel_mode;
if (list_empty(&connector->modes)) {
dev_dbg(dev->dev, "mode_fixup: empty modes list\n");
return false;
}
/* The flat panel mode is fixed, just copy it to the adjusted mode. */
panel_mode = list_first_entry(&connector->modes,
struct drm_display_mode, head);
drm_mode_copy(adjusted_mode, panel_mode);
return true;
}
static void shmob_drm_encoder_mode_prepare(struct drm_encoder *encoder)
{
/* No-op, everything is handled in the CRTC code. */
}
static void shmob_drm_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
/* No-op, everything is handled in the CRTC code. */
}
static void shmob_drm_encoder_mode_commit(struct drm_encoder *encoder)
{
/* No-op, everything is handled in the CRTC code. */
}
static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
.dpms = shmob_drm_encoder_dpms,
.mode_fixup = shmob_drm_encoder_mode_fixup,
.prepare = shmob_drm_encoder_mode_prepare,
.commit = shmob_drm_encoder_mode_commit,
.mode_set = shmob_drm_encoder_mode_set,
};
static void shmob_drm_encoder_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
}
static const struct drm_encoder_funcs encoder_funcs = {
.destroy = shmob_drm_encoder_destroy,
};
int shmob_drm_encoder_create(struct shmob_drm_device *sdev)
{
struct drm_encoder *encoder = &sdev->encoder.encoder;
int ret;
sdev->encoder.dpms = DRM_MODE_DPMS_OFF;
encoder->possible_crtcs = 1;
ret = drm_encoder_init(sdev->ddev, encoder, &encoder_funcs,
DRM_MODE_ENCODER_LVDS);
if (ret < 0)
return ret;
drm_encoder_helper_add(encoder, &encoder_helper_funcs);
return 0;
}
void shmob_drm_crtc_enable_vblank(struct shmob_drm_device *sdev, bool enable)
{
unsigned long flags;
u32 ldintr;
/* Be careful not to acknowledge any pending interrupt. */
spin_lock_irqsave(&sdev->irq_lock, flags);
ldintr = lcdc_read(sdev, LDINTR) | LDINTR_STATUS_MASK;
if (enable)
ldintr |= LDINTR_VEE;
else
ldintr &= ~LDINTR_VEE;
lcdc_write(sdev, LDINTR, ldintr);
spin_unlock_irqrestore(&sdev->irq_lock, flags);
}
/* -----------------------------------------------------------------------------
* Connector
*/
#define to_shmob_connector(c) \
container_of(c, struct shmob_drm_connector, connector)
static int shmob_drm_connector_get_modes(struct drm_connector *connector)
{
struct shmob_drm_device *sdev = connector->dev->dev_private;
struct drm_display_mode *mode;
mode = drm_mode_create(connector->dev);
if (mode == NULL)
return 0;
mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
mode->clock = sdev->pdata->panel.mode.clock;
mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
mode->htotal = sdev->pdata->panel.mode.htotal;
mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
mode->vtotal = sdev->pdata->panel.mode.vtotal;
mode->flags = sdev->pdata->panel.mode.flags;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
connector->display_info.width_mm = sdev->pdata->panel.width_mm;
connector->display_info.height_mm = sdev->pdata->panel.height_mm;
return 1;
}
static struct drm_encoder *
shmob_drm_connector_best_encoder(struct drm_connector *connector)
{
struct shmob_drm_connector *scon = to_shmob_connector(connector);
return scon->encoder;
}
static const struct drm_connector_helper_funcs connector_helper_funcs = {
.get_modes = shmob_drm_connector_get_modes,
.best_encoder = shmob_drm_connector_best_encoder,
};
static void shmob_drm_connector_destroy(struct drm_connector *connector)
{
struct shmob_drm_connector *scon = to_shmob_connector(connector);
shmob_drm_backlight_exit(scon);
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
}
static enum drm_connector_status
shmob_drm_connector_detect(struct drm_connector *connector, bool force)
{
return connector_status_connected;
}
static const struct drm_connector_funcs connector_funcs = {
.dpms = drm_helper_connector_dpms,
.detect = shmob_drm_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = shmob_drm_connector_destroy,
};
int shmob_drm_connector_create(struct shmob_drm_device *sdev,
struct drm_encoder *encoder)
{
struct drm_connector *connector = &sdev->connector.connector;
int ret;
sdev->connector.encoder = encoder;
connector->display_info.width_mm = sdev->pdata->panel.width_mm;
connector->display_info.height_mm = sdev->pdata->panel.height_mm;
ret = drm_connector_init(sdev->ddev, connector, &connector_funcs,
DRM_MODE_CONNECTOR_LVDS);
if (ret < 0)
return ret;
drm_connector_helper_add(connector, &connector_helper_funcs);
ret = drm_connector_register(connector);
if (ret < 0)
goto err_cleanup;
ret = shmob_drm_backlight_init(&sdev->connector);
if (ret < 0)
goto err_sysfs;
ret = drm_mode_connector_attach_encoder(connector, encoder);
if (ret < 0)
goto err_backlight;
connector->encoder = encoder;
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
drm_object_property_set_value(&connector->base,
sdev->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
return 0;
err_backlight:
shmob_drm_backlight_exit(&sdev->connector);
err_sysfs:
drm_connector_unregister(connector);
err_cleanup:
drm_connector_cleanup(connector);
return ret;
}