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ara-mdk / platform / hardware / ti / omap4xxx / a35209b2e26289458670e04d6e62dee3d085ea63 / . / hwc / hwc.c
blob: bc54f1299181bdf2c6e6d09011385075fe077cb5 [file] [log] [blame]
/*
* Copyright (C) Texas Instruments - http://www.ti.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <malloc.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
#include <poll.h>
#include <sys/ioctl.h>
#include <linux/fb.h>
#include <sys/mman.h>
#include <cutils/properties.h>
#include <cutils/log.h>
#include <cutils/native_handle.h>
#include <hardware/hardware.h>
#include <hardware/hwcomposer.h>
#include <EGL/egl.h>
#include <utils/Timers.h>
#include <hardware_legacy/uevent.h>
#include <png.h>
#define ASPECT_RATIO_TOLERANCE 0.02f
#ifndef FBIO_WAITFORVSYNC
#define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32)
#endif
#define min(a, b) ( { typeof(a) __a = (a), __b = (b); __a < __b ? __a : __b; } )
#define max(a, b) ( { typeof(a) __a = (a), __b = (b); __a > __b ? __a : __b; } )
#define swap(a, b) do { typeof(a) __a = (a); (a) = (b); (b) = __a; } while (0)
#define WIDTH(rect) ((rect).right - (rect).left)
#define HEIGHT(rect) ((rect).bottom - (rect).top)
#include <video/dsscomp.h>
#include "hal_public.h"
#define MAX_HW_OVERLAYS 4
#define NUM_NONSCALING_OVERLAYS 1
#define HAL_PIXEL_FORMAT_BGRX_8888 0x1FF
#define HAL_PIXEL_FORMAT_TI_NV12 0x100
#define HAL_PIXEL_FORMAT_TI_NV12_PADDED 0x101
#define MAX_TILER_SLOT (16 << 20)
struct ext_transform_t {
__u8 rotation : 3; /* 90-degree clockwise rotations */
__u8 hflip : 1; /* flip l-r (after rotation) */
__u8 enabled : 1; /* cloning enabled */
__u8 docking : 1; /* docking vs. mirroring - used for state */
};
/* cloning support and state */
struct omap4_hwc_ext {
/* support */
struct ext_transform_t mirror; /* mirroring settings */
struct ext_transform_t dock; /* docking settings */
float lcd_xpy; /* pixel ratio for UI */
__u8 avoid_mode_change; /* use HDMI mode used for mirroring if possible */
__u8 force_dock; /* must dock */
__u8 hdmi_state; /* whether HDMI is connected */
/* state */
__u8 on_tv; /* using a tv */
struct ext_transform_t current; /* current settings */
struct ext_transform_t last; /* last-used settings */
/* configuration */
__u32 last_xres_used; /* resolution and pixel ratio used for mode selection */
__u32 last_yres_used;
__u32 last_mode; /* 2-s complement of last HDMI mode set, 0 if none */
__u32 mirror_mode; /* 2-s complement of mode used when mirroring */
float last_xpy;
__u16 width; /* external screen dimensions */
__u16 height;
__u32 xres; /* external screen resolution */
__u32 yres;
float m[2][3]; /* external transformation matrix */
hwc_rect_t mirror_region; /* region of screen to mirror */
};
typedef struct omap4_hwc_ext omap4_hwc_ext_t;
/* used by property settings */
enum {
EXT_ROTATION = 3, /* rotation while mirroring */
EXT_HFLIP = (1 << 2), /* flip l-r on output (after rotation) */
};
/* ARGB image */
struct omap4_hwc_img {
int width;
int height;
int rowbytes;
int size;
unsigned char *ptr;
} dock_image = { .rowbytes = 0 };
struct omap4_hwc_module {
hwc_module_t base;
IMG_framebuffer_device_public_t *fb_dev;
};
typedef struct omap4_hwc_module omap4_hwc_module_t;
struct omap4_hwc_device {
/* static data */
hwc_composer_device_t base;
hwc_procs_t *procs;
pthread_t hdmi_thread;
pthread_mutex_t lock;
IMG_framebuffer_device_public_t *fb_dev;
struct dsscomp_display_info fb_dis;
int fb_fd; /* file descriptor for /dev/fb0 */
int dsscomp_fd; /* file descriptor for /dev/dsscomp */
int hdmi_fb_fd; /* file descriptor for /dev/fb1 */
int pipe_fds[2]; /* pipe to event thread */
int img_mem_size; /* size of fb for hdmi */
void *img_mem_ptr; /* start of fb for hdmi */
int flags_rgb_order;
int flags_nv12_only;
int force_sgx;
omap4_hwc_ext_t ext; /* external mirroring data */
int idle;
int ovls_blending;
/* composition data */
struct dsscomp_setup_dispc_data dsscomp_data;
buffer_handle_t *buffers;
int use_sgx;
int swap_rb;
unsigned int post2_layers;
int ext_ovls; /* # of overlays on external display for current composition */
int ext_ovls_wanted; /* # of overlays that should be on external display for current composition */
int last_ext_ovls; /* # of overlays on external/internal display for last composition */
int last_int_ovls;
};
typedef struct omap4_hwc_device omap4_hwc_device_t;
#define HAL_FMT(f) ((f) == HAL_PIXEL_FORMAT_TI_NV12 ? "NV12" : \
(f) == HAL_PIXEL_FORMAT_YV12 ? "YV12" : \
(f) == HAL_PIXEL_FORMAT_BGRX_8888 ? "xRGB32" : \
(f) == HAL_PIXEL_FORMAT_RGBX_8888 ? "xBGR32" : \
(f) == HAL_PIXEL_FORMAT_BGRA_8888 ? "ARGB32" : \
(f) == HAL_PIXEL_FORMAT_RGBA_8888 ? "ABGR32" : \
(f) == HAL_PIXEL_FORMAT_RGB_565 ? "RGB565" : "??")
#define DSS_FMT(f) ((f) == OMAP_DSS_COLOR_NV12 ? "NV12" : \
(f) == OMAP_DSS_COLOR_RGB24U ? "xRGB32" : \
(f) == OMAP_DSS_COLOR_ARGB32 ? "ARGB32" : \
(f) == OMAP_DSS_COLOR_RGB16 ? "RGB565" : "??")
static int debug = 0;
static void dump_layer(hwc_layer_t const* l)
{
ALOGD("\ttype=%d, flags=%08x, handle=%p, tr=%02x, blend=%04x, {%d,%d,%d,%d}, {%d,%d,%d,%d}",
l->compositionType, l->flags, l->handle, l->transform, l->blending,
l->sourceCrop.left,
l->sourceCrop.top,
l->sourceCrop.right,
l->sourceCrop.bottom,
l->displayFrame.left,
l->displayFrame.top,
l->displayFrame.right,
l->displayFrame.bottom);
}
static void dump_dsscomp(struct dsscomp_setup_dispc_data *d)
{
unsigned i;
ALOGD("[%08x] set: %c%c%c %d ovls\n",
d->sync_id,
(d->mode & DSSCOMP_SETUP_MODE_APPLY) ? 'A' : '-',
(d->mode & DSSCOMP_SETUP_MODE_DISPLAY) ? 'D' : '-',
(d->mode & DSSCOMP_SETUP_MODE_CAPTURE) ? 'C' : '-',
d->num_ovls);
for (i = 0; i < d->num_mgrs; i++) {
struct dss2_mgr_info *mi = &d->mgrs[i];
ALOGD(" (dis%d alpha=%d col=%08x ilace=%d)\n",
mi->ix,
mi->alpha_blending, mi->default_color,
mi->interlaced);
}
for (i = 0; i < d->num_ovls; i++) {
struct dss2_ovl_info *oi = &d->ovls[i];
struct dss2_ovl_cfg *c = &oi->cfg;
if (c->zonly)
ALOGD("ovl%d(%s z%d)\n",
c->ix, c->enabled ? "ON" : "off", c->zorder);
else
ALOGD("ovl%d(%s z%d %s%s *%d%% %d*%d:%d,%d+%d,%d rot%d%s => %d,%d+%d,%d %p/%p|%d)\n",
c->ix, c->enabled ? "ON" : "off", c->zorder, DSS_FMT(c->color_mode),
c->pre_mult_alpha ? " premult" : "",
(c->global_alpha * 100 + 128) / 255,
c->width, c->height, c->crop.x, c->crop.y,
c->crop.w, c->crop.h,
c->rotation, c->mirror ? "+mir" : "",
c->win.x, c->win.y, c->win.w, c->win.h,
(void *) oi->ba, (void *) oi->uv, c->stride);
}
}
struct dump_buf {
char *buf;
int buf_len;
int len;
};
static void dump_printf(struct dump_buf *buf, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
buf->len += vsnprintf(buf->buf + buf->len, buf->buf_len - buf->len, fmt, ap);
va_end(ap);
}
static void dump_set_info(omap4_hwc_device_t *hwc_dev, hwc_layer_list_t* list)
{
struct dsscomp_setup_dispc_data *dsscomp = &hwc_dev->dsscomp_data;
char logbuf[1024];
struct dump_buf log = {
.buf = logbuf,
.buf_len = sizeof(logbuf),
};
unsigned int i;
dump_printf(&log, "set H{");
for (i = 0; list && i < list->numHwLayers; i++) {
if (i)
dump_printf(&log, " ");
hwc_layer_t *layer = &list->hwLayers[i];
IMG_native_handle_t *handle = (IMG_native_handle_t *)layer->handle;
dump_printf(&log, "%p:%s,", handle, layer->compositionType == HWC_OVERLAY ? "DSS" : "SGX");
if ((layer->flags & HWC_SKIP_LAYER) || !handle) {
dump_printf(&log, "SKIP");
continue;
}
if (layer->flags & HWC_HINT_CLEAR_FB)
dump_printf(&log, "CLR,");
dump_printf(&log, "%d*%d(%s)", handle->iWidth, handle->iHeight, HAL_FMT(handle->iFormat));
if (layer->transform)
dump_printf(&log, "~%d", layer->transform);
}
dump_printf(&log, "} D{");
for (i = 0; i < dsscomp->num_ovls; i++) {
if (i)
dump_printf(&log, " ");
dump_printf(&log, "%d=", dsscomp->ovls[i].cfg.ix);
if (dsscomp->ovls[i].cfg.enabled)
dump_printf(&log, "%08x:%d*%d,%s",
dsscomp->ovls[i].ba,
dsscomp->ovls[i].cfg.width,
dsscomp->ovls[i].cfg.height,
DSS_FMT(dsscomp->ovls[i].cfg.color_mode));
else
dump_printf(&log, "-");
}
dump_printf(&log, "} L{");
for (i = 0; i < hwc_dev->post2_layers; i++) {
if (i)
dump_printf(&log, " ");
dump_printf(&log, "%p", hwc_dev->buffers[i]);
}
dump_printf(&log, "}%s\n", hwc_dev->use_sgx ? " swap" : "");
ALOGD("%s", log.buf);
}
static int sync_id = 0;
static int omap4_hwc_is_valid_format(int format)
{
switch(format) {
case HAL_PIXEL_FORMAT_RGB_565:
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
case HAL_PIXEL_FORMAT_BGRX_8888:
case HAL_PIXEL_FORMAT_TI_NV12:
case HAL_PIXEL_FORMAT_TI_NV12_PADDED:
return 1;
default:
return 0;
}
}
static int scaled(hwc_layer_t *layer)
{
int w = WIDTH(layer->sourceCrop);
int h = HEIGHT(layer->sourceCrop);
if (layer->transform & HWC_TRANSFORM_ROT_90)
swap(w, h);
return WIDTH(layer->displayFrame) != w || HEIGHT(layer->displayFrame) != h;
}
static int is_protected(hwc_layer_t *layer)
{
IMG_native_handle_t *handle = (IMG_native_handle_t *)layer->handle;
return (handle->usage & GRALLOC_USAGE_PROTECTED);
}
#define is_BLENDED(layer) ((layer)->blending != HWC_BLENDING_NONE)
static int is_RGB(IMG_native_handle_t *handle)
{
switch(handle->iFormat)
{
case HAL_PIXEL_FORMAT_BGRA_8888:
case HAL_PIXEL_FORMAT_BGRX_8888:
case HAL_PIXEL_FORMAT_RGB_565:
return 1;
default:
return 0;
}
}
static int is_BGR_format(int format)
{
switch (format) {
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_RGBA_8888:
return 1;
default:
return 0;
}
}
static int is_BGR(IMG_native_handle_t *handle)
{
return is_BGR_format(handle->iFormat);
}
static int is_NV12(IMG_native_handle_t *handle)
{
switch(handle->iFormat)
{
case HAL_PIXEL_FORMAT_TI_NV12:
case HAL_PIXEL_FORMAT_TI_NV12_PADDED:
return 1;
default:
return 0;
}
}
static int dockable(hwc_layer_t *layer)
{
IMG_native_handle_t *handle = (IMG_native_handle_t *)layer->handle;
return (handle->usage & GRALLOC_USAGE_EXTERNAL_DISP);
}
static unsigned int mem1d(IMG_native_handle_t *handle)
{
if (handle == NULL || is_NV12(handle))
return 0;
int bpp = handle->iFormat == HAL_PIXEL_FORMAT_RGB_565 ? 2 : 4;
int stride = ALIGN(handle->iWidth, HW_ALIGN) * bpp;
return stride * handle->iHeight;
}
static void
omap4_hwc_setup_layer_base(struct dss2_ovl_cfg *oc, int index, int format, int blended, int width, int height)
{
unsigned int bits_per_pixel;
/* YUV2RGB conversion */
const struct omap_dss_cconv_coefs ctbl_bt601_5 = {
298, 409, 0, 298, -208, -100, 298, 0, 517, 0,
};
/* convert color format */
switch (format) {
case HAL_PIXEL_FORMAT_RGBA_8888:
case HAL_PIXEL_FORMAT_BGRA_8888:
oc->color_mode = OMAP_DSS_COLOR_ARGB32;
bits_per_pixel = 32;
if (blended)
break;
case HAL_PIXEL_FORMAT_RGBX_8888:
case HAL_PIXEL_FORMAT_BGRX_8888:
oc->color_mode = OMAP_DSS_COLOR_RGB24U;
bits_per_pixel = 32;
break;
case HAL_PIXEL_FORMAT_RGB_565:
oc->color_mode = OMAP_DSS_COLOR_RGB16;
bits_per_pixel = 16;
break;
case HAL_PIXEL_FORMAT_TI_NV12:
case HAL_PIXEL_FORMAT_TI_NV12_PADDED:
oc->color_mode = OMAP_DSS_COLOR_NV12;
bits_per_pixel = 8;
oc->cconv = ctbl_bt601_5;
break;
default:
/* Should have been filtered out */
ALOGV("Unsupported pixel format");
return;
}
oc->width = width;
oc->height = height;
oc->stride = ALIGN(width, HW_ALIGN) * bits_per_pixel / 8;
oc->enabled = 1;
oc->global_alpha = 255;
oc->zorder = index;
oc->ix = 0;
/* defaults for SGX framebuffer renders */
oc->crop.w = oc->win.w = width;
oc->crop.h = oc->win.h = height;
/* for now interlacing and vc1 info is not supplied */
oc->ilace = OMAP_DSS_ILACE_NONE;
oc->vc1.enable = 0;
}
static void
omap4_hwc_setup_layer(omap4_hwc_device_t *hwc_dev, struct dss2_ovl_info *ovl,
hwc_layer_t *layer, int index,
int format, int width, int height)
{
struct dss2_ovl_cfg *oc = &ovl->cfg;
//dump_layer(layer);
omap4_hwc_setup_layer_base(oc, index, format, is_BLENDED(layer), width, height);
/* convert transformation - assuming 0-set config */
if (layer->transform & HWC_TRANSFORM_FLIP_H)
oc->mirror = 1;
if (layer->transform & HWC_TRANSFORM_FLIP_V) {
oc->rotation = 2;
oc->mirror = !oc->mirror;
}
if (layer->transform & HWC_TRANSFORM_ROT_90) {
oc->rotation += oc->mirror ? -1 : 1;
oc->rotation &= 3;
}
oc->pre_mult_alpha = layer->blending == HWC_BLENDING_PREMULT;
/* display position */
oc->win.x = layer->displayFrame.left;
oc->win.y = layer->displayFrame.top;
oc->win.w = WIDTH(layer->displayFrame);
oc->win.h = HEIGHT(layer->displayFrame);
/* crop */
oc->crop.x = layer->sourceCrop.left;
oc->crop.y = layer->sourceCrop.top;
oc->crop.w = WIDTH(layer->sourceCrop);
oc->crop.h = HEIGHT(layer->sourceCrop);
}
const float m_unit[2][3] = { { 1., 0., 0. }, { 0., 1., 0. } };
static inline void m_translate(float m[2][3], int dx, int dy)
{
m[0][2] += dx;
m[1][2] += dy;
}
static inline void m_scale1(float m[3], int from, int to)
{
m[0] = m[0] * to / from;
m[1] = m[1] * to / from;
m[2] = m[2] * to / from;
}
static inline void m_scale(float m[2][3], int x_from, int x_to, int y_from, int y_to)
{
m_scale1(m[0], x_from, x_to);
m_scale1(m[1], y_from, y_to);
}
static void m_rotate(float m[2][3], int quarter_turns)
{
if (quarter_turns & 2)
m_scale(m, 1, -1, 1, -1);
if (quarter_turns & 1) {
int q;
q = m[0][0]; m[0][0] = -m[1][0]; m[1][0] = q;
q = m[0][1]; m[0][1] = -m[1][1]; m[1][1] = q;
q = m[0][2]; m[0][2] = -m[1][2]; m[1][2] = q;
}
}
static inline int m_round(float x)
{
/* int truncates towards 0 */
return (int) (x < 0 ? x - 0.5 : x + 0.5);
}
/*
* assuming xpy (xratio:yratio) original pixel ratio, calculate the adjusted width
* and height for a screen of xres/yres and physical size of width/height.
* The adjusted size is the largest that fits into the screen.
*/
static void get_max_dimensions(__u32 orig_xres, __u32 orig_yres,
float xpy,
__u32 scr_xres, __u32 scr_yres,
__u32 scr_width, __u32 scr_height,
__u32 *adj_xres, __u32 *adj_yres)
{
/* assume full screen (largest size)*/
*adj_xres = scr_xres;
*adj_yres = scr_yres;
/* assume 1:1 pixel ratios if none supplied */
if (!scr_width || !scr_height) {
scr_width = scr_xres;
scr_height = scr_yres;
}
/* trim to keep aspect ratio */
float x_factor = orig_xres * xpy * scr_height;
float y_factor = orig_yres * scr_width;
/* allow for tolerance so we avoid scaling if framebuffer is standard size */
if (x_factor < y_factor * (1.f - ASPECT_RATIO_TOLERANCE))
*adj_xres = (__u32) (x_factor * *adj_xres / y_factor + 0.5);
else if (x_factor * (1.f - ASPECT_RATIO_TOLERANCE) > y_factor)
*adj_yres = (__u32) (y_factor * *adj_yres / x_factor + 0.5);
}
static void set_ext_matrix(omap4_hwc_ext_t *ext, struct hwc_rect region)
{
int orig_w = WIDTH(region);
int orig_h = HEIGHT(region);
float xpy = ext->lcd_xpy;
/* reorientation matrix is:
m = (center-from-target-center) * (scale-to-target) * (mirror) * (rotate) * (center-to-original-center) */
memcpy(ext->m, m_unit, sizeof(m_unit));
m_translate(ext->m, -(orig_w >> 1) - region.left, -(orig_h >> 1) - region.top);
m_rotate(ext->m, ext->current.rotation);
if (ext->current.hflip)
m_scale(ext->m, 1, -1, 1, 1);
if (ext->current.rotation & 1) {
swap(orig_w, orig_h);
xpy = 1. / xpy;
}
/* get target size */
__u32 adj_xres, adj_yres;
get_max_dimensions(orig_w, orig_h, xpy,
ext->xres, ext->yres, ext->width, ext->height,
&adj_xres, &adj_yres);
m_scale(ext->m, orig_w, adj_xres, orig_h, adj_yres);
m_translate(ext->m, ext->xres >> 1, ext->yres >> 1);
}
static int
crop_to_rect(struct dss2_ovl_cfg *cfg, struct hwc_rect vis_rect)
{
struct {
int xy[2];
int wh[2];
} crop, win;
struct {
int lt[2];
int rb[2];
} vis;
win.xy[0] = cfg->win.x; win.xy[1] = cfg->win.y;
win.wh[0] = cfg->win.w; win.wh[1] = cfg->win.h;
crop.xy[0] = cfg->crop.x; crop.xy[1] = cfg->crop.y;
crop.wh[0] = cfg->crop.w; crop.wh[1] = cfg->crop.h;
vis.lt[0] = vis_rect.left; vis.lt[1] = vis_rect.top;
vis.rb[0] = vis_rect.right; vis.rb[1] = vis_rect.bottom;
int c, swap = cfg->rotation & 1;
/* align crop window with display coordinates */
if (swap)
crop.xy[1] -= (crop.wh[1] = -crop.wh[1]);
if (cfg->rotation & 2)
crop.xy[!swap] -= (crop.wh[!swap] = -crop.wh[!swap]);
if ((!cfg->mirror) ^ !(cfg->rotation & 2))
crop.xy[swap] -= (crop.wh[swap] = -crop.wh[swap]);
for (c = 0; c < 2; c++) {
/* see if complete buffer is outside the vis or it is
fully cropped or scaled to 0 */
if (win.wh[c] <= 0 || vis.rb[c] <= vis.lt[c] ||
win.xy[c] + win.wh[c] <= vis.lt[c] ||
win.xy[c] >= vis.rb[c] ||
!crop.wh[c ^ swap])
return -ENOENT;
/* crop left/top */
if (win.xy[c] < vis.lt[c]) {
/* correction term */
int a = (vis.lt[c] - win.xy[c]) * crop.wh[c ^ swap] / win.wh[c];
crop.xy[c ^ swap] += a;
crop.wh[c ^ swap] -= a;
win.wh[c] -= vis.lt[c] - win.xy[c];
win.xy[c] = vis.lt[c];
}
/* crop right/bottom */
if (win.xy[c] + win.wh[c] > vis.rb[c]) {
crop.wh[c ^ swap] = crop.wh[c ^ swap] * (vis.rb[c] - win.xy[c]) / win.wh[c];
win.wh[c] = vis.rb[c] - win.xy[c];
}
if (!crop.wh[c ^ swap] || !win.wh[c])
return -ENOENT;
}
/* realign crop window to buffer coordinates */
if (cfg->rotation & 2)
crop.xy[!swap] -= (crop.wh[!swap] = -crop.wh[!swap]);
if ((!cfg->mirror) ^ !(cfg->rotation & 2))
crop.xy[swap] -= (crop.wh[swap] = -crop.wh[swap]);
if (swap)
crop.xy[1] -= (crop.wh[1] = -crop.wh[1]);
cfg->win.x = win.xy[0]; cfg->win.y = win.xy[1];
cfg->win.w = win.wh[0]; cfg->win.h = win.wh[1];
cfg->crop.x = crop.xy[0]; cfg->crop.y = crop.xy[1];
cfg->crop.w = crop.wh[0]; cfg->crop.h = crop.wh[1];
return 0;
}
static void
omap4_hwc_adjust_ext_layer(omap4_hwc_ext_t *ext, struct dss2_ovl_info *ovl)
{
struct dss2_ovl_cfg *oc = &ovl->cfg;
float x, y, w, h;
/* crop to clone region if mirroring */
if (!ext->current.docking &&
crop_to_rect(&ovl->cfg, ext->mirror_region) != 0) {
ovl->cfg.enabled = 0;
return;
}
/* display position */
x = ext->m[0][0] * oc->win.x + ext->m[0][1] * oc->win.y + ext->m[0][2];
y = ext->m[1][0] * oc->win.x + ext->m[1][1] * oc->win.y + ext->m[1][2];
w = ext->m[0][0] * oc->win.w + ext->m[0][1] * oc->win.h;
h = ext->m[1][0] * oc->win.w + ext->m[1][1] * oc->win.h;
oc->win.x = m_round(w > 0 ? x : x + w);
oc->win.y = m_round(h > 0 ? y : y + h);
oc->win.w = m_round(w > 0 ? w : -w);
oc->win.h = m_round(h > 0 ? h : -h);
/* combining transformations: F^a*R^b*F^i*R^j = F^(a+b)*R^(j+b*(-1)^i), because F*R = R^(-1)*F */
oc->rotation += (oc->mirror ? -1 : 1) * ext->current.rotation;
oc->rotation &= 3;
if (ext->current.hflip)
oc->mirror = !oc->mirror;
}
static struct dsscomp_dispc_limitations {
__u8 max_xdecim_2d;
__u8 max_ydecim_2d;
__u8 max_xdecim_1d;
__u8 max_ydecim_1d;
__u32 fclk;
__u8 max_downscale;
__u8 min_width;
__u16 integer_scale_ratio_limit;
__u16 max_width;
__u16 max_height;
} limits = {
.max_xdecim_1d = 16,
.max_xdecim_2d = 16,
.max_ydecim_1d = 16,
.max_ydecim_2d = 2,
.fclk = 170666666,
.max_downscale = 4,
.min_width = 2,
.integer_scale_ratio_limit = 2048,
.max_width = 2048,
.max_height = 2048,
};
static int omap4_hwc_can_scale(__u32 src_w, __u32 src_h, __u32 dst_w, __u32 dst_h, int is_2d,
struct dsscomp_display_info *dis, struct dsscomp_dispc_limitations *limits,
__u32 pclk)
{
__u32 fclk = limits->fclk / 1000;
/* ERRATAs */
/* cannot render 1-width layers on DSI video mode panels - we just disallow all 1-width LCD layers */
if (dis->channel != OMAP_DSS_CHANNEL_DIGIT && dst_w < limits->min_width)
return 0;
/* NOTE: no support for checking YUV422 layers that are tricky to scale */
/* max downscale */
if (dst_h < src_h / limits->max_downscale / (is_2d ? limits->max_ydecim_2d : limits->max_ydecim_1d))
return 0;
/* for manual panels pclk is 0, and there are no pclk based scaling limits */
if (!pclk)
return (dst_w < src_w / limits->max_downscale / (is_2d ? limits->max_xdecim_2d : limits->max_xdecim_1d));
/* :HACK: limit horizontal downscale well below theoretical limit as we saw display artifacts */
if (dst_w < src_w / 4)
return 0;
/* max horizontal downscale is 4, or the fclk/pixclk */
if (fclk > pclk * limits->max_downscale)
fclk = pclk * limits->max_downscale;
/* for small parts, we need to use integer fclk/pixclk */
if (src_w < limits->integer_scale_ratio_limit)
fclk = fclk / pclk * pclk;
if ((__u32) dst_w < src_w * pclk / fclk / (is_2d ? limits->max_xdecim_2d : limits->max_xdecim_1d))
return 0;
return 1;
}
static int omap4_hwc_can_scale_layer(omap4_hwc_device_t *hwc_dev, hwc_layer_t *layer, IMG_native_handle_t *handle)
{
int src_w = WIDTH(layer->sourceCrop);
int src_h = HEIGHT(layer->sourceCrop);
int dst_w = WIDTH(layer->displayFrame);
int dst_h = HEIGHT(layer->displayFrame);
/* account for 90-degree rotation */
if (layer->transform & HWC_TRANSFORM_ROT_90)
swap(src_w, src_h);
/* NOTE: layers should be able to be scaled externally since
framebuffer is able to be scaled on selected external resolution */
return omap4_hwc_can_scale(src_w, src_h, dst_w, dst_h, is_NV12(handle), &hwc_dev->fb_dis, &limits,
hwc_dev->fb_dis.timings.pixel_clock);
}
static int omap4_hwc_is_valid_layer(omap4_hwc_device_t *hwc_dev,
hwc_layer_t *layer,
IMG_native_handle_t *handle)
{
/* Skip layers are handled by SF */
if ((layer->flags & HWC_SKIP_LAYER) || !handle)
return 0;
if (!omap4_hwc_is_valid_format(handle->iFormat))
return 0;
/* 1D buffers: no transform, must fit in TILER slot */
if (!is_NV12(handle)) {
if (layer->transform)
return 0;
if (mem1d(handle) > MAX_TILER_SLOT)
return 0;
}
return omap4_hwc_can_scale_layer(hwc_dev, layer, handle);
}
static __u32 add_scaling_score(__u32 score,
__u32 xres, __u32 yres, __u32 refresh,
__u32 ext_xres, __u32 ext_yres,
__u32 mode_xres, __u32 mode_yres, __u32 mode_refresh)
{
__u32 area = xres * yres;
__u32 ext_area = ext_xres * ext_yres;
__u32 mode_area = mode_xres * mode_yres;
/* prefer to upscale (1% tolerance) [0..1] (insert after 1st bit) */
int upscale = (ext_xres >= xres * 99 / 100 && ext_yres >= yres * 99 / 100);
score = (((score & ~1) | upscale) << 1) | (score & 1);
/* pick minimum scaling [0..16] */
if (ext_area > area)
score = (score << 5) | (16 * area / ext_area);
else
score = (score << 5) | (16 * ext_area / area);
/* pick smallest leftover area [0..16] */
score = (score << 5) | ((16 * ext_area + (mode_area >> 1)) / mode_area);
/* adjust mode refresh rate */
mode_refresh += mode_refresh % 6 == 5;
/* prefer same or higher frame rate */
upscale = (mode_refresh >= refresh);
score = (score << 1) | upscale;
/* pick closest frame rate */
if (mode_refresh > refresh)
score = (score << 8) | (240 * refresh / mode_refresh);
else
score = (score << 8) | (240 * mode_refresh / refresh);
return score;
}
static int omap4_hwc_set_best_hdmi_mode(omap4_hwc_device_t *hwc_dev, __u32 xres, __u32 yres,
float xpy)
{
struct _qdis {
struct dsscomp_display_info dis;
struct dsscomp_videomode modedb[16];
} d = { .dis = { .ix = 1 } };
omap4_hwc_ext_t *ext = &hwc_dev->ext;
d.dis.modedb_len = sizeof(d.modedb) / sizeof(*d.modedb);
int ret = ioctl(hwc_dev->dsscomp_fd, DSSCIOC_QUERY_DISPLAY, &d);
if (ret)
return ret;
if (d.dis.timings.x_res * d.dis.timings.y_res == 0 ||
xres * yres == 0)
return -EINVAL;
__u32 i, best = ~0, best_score = 0;
ext->width = d.dis.width_in_mm;
ext->height = d.dis.height_in_mm;
ext->xres = d.dis.timings.x_res;
ext->yres = d.dis.timings.y_res;
/* use VGA external resolution as default */
if (!ext->xres || !ext->yres) {
ext->xres = 640;
ext->yres = 480;
}
__u32 ext_fb_xres, ext_fb_yres;
for (i = 0; i < d.dis.modedb_len; i++) {
__u32 score = 0;
__u32 mode_xres = d.modedb[i].xres;
__u32 mode_yres = d.modedb[i].yres;
__u32 ext_width = d.dis.width_in_mm;
__u32 ext_height = d.dis.height_in_mm;
if (d.modedb[i].flag & FB_FLAG_RATIO_4_3) {
ext_width = 4;
ext_height = 3;
} else if (d.modedb[i].flag & FB_FLAG_RATIO_16_9) {
ext_width = 16;
ext_height = 9;
}
if (!mode_xres || !mode_yres)
continue;
get_max_dimensions(xres, yres, xpy, mode_xres, mode_yres,
ext_width, ext_height, &ext_fb_xres, &ext_fb_yres);
/* we need to ensure that even TILER2D buffers can be scaled */
if (!d.modedb[i].pixclock ||
d.modedb[i].vmode ||
!omap4_hwc_can_scale(xres, yres, ext_fb_xres, ext_fb_yres,
1, &d.dis, &limits,
1000000000 / d.modedb[i].pixclock))
continue;
/* prefer CEA modes */
if (d.modedb[i].flag & (FB_FLAG_RATIO_4_3 | FB_FLAG_RATIO_16_9))
score = 1;
/* prefer the same mode as we use for mirroring to avoid mode change */
score = (score << 1) | (i == ~ext->mirror_mode && ext->avoid_mode_change);
score = add_scaling_score(score, xres, yres, 60, ext_fb_xres, ext_fb_yres,
mode_xres, mode_yres, d.modedb[i].refresh ? : 1);
ALOGD("#%d: %dx%d %dHz", i, mode_xres, mode_yres, d.modedb[i].refresh);
if (debug)
ALOGD(" score=0x%x adj.res=%dx%d", score, ext_fb_xres, ext_fb_yres);
if (best_score < score) {
ext->width = ext_width;
ext->height = ext_height;
ext->xres = mode_xres;
ext->yres = mode_yres;
best = i;
best_score = score;
}
}
if (~best) {
struct dsscomp_setup_display_data sdis = { .ix = 1, };
sdis.mode = d.dis.modedb[best];
ALOGD("picking #%d", best);
/* only reconfigure on change */
if (ext->last_mode != ~best)
ioctl(hwc_dev->dsscomp_fd, DSSCIOC_SETUP_DISPLAY, &sdis);
ext->last_mode = ~best;
} else {
__u32 ext_width = d.dis.width_in_mm;
__u32 ext_height = d.dis.height_in_mm;
__u32 ext_fb_xres, ext_fb_yres;
get_max_dimensions(xres, yres, xpy, d.dis.timings.x_res, d.dis.timings.y_res,
ext_width, ext_height, &ext_fb_xres, &ext_fb_yres);
if (!d.dis.timings.pixel_clock ||
d.dis.mgr.interlaced ||
!omap4_hwc_can_scale(xres, yres, ext_fb_xres, ext_fb_yres,
1, &d.dis, &limits,
d.dis.timings.pixel_clock)) {
ALOGW("DSS scaler cannot support HDMI cloning");
return -1;
}
}
ext->last_xres_used = xres;
ext->last_yres_used = yres;
ext->last_xpy = xpy;
if (d.dis.channel == OMAP_DSS_CHANNEL_DIGIT)
ext->on_tv = 1;
return 0;
}
struct counts {
unsigned int possible_overlay_layers;
unsigned int composited_layers;
unsigned int scaled_layers;
unsigned int RGB;
unsigned int BGR;
unsigned int NV12;
unsigned int dockable;
unsigned int protected;
unsigned int max_hw_overlays;
unsigned int max_scaling_overlays;
unsigned int mem;
};
static void gather_layer_statistics(omap4_hwc_device_t *hwc_dev, struct counts *num, hwc_layer_list_t *list)
{
unsigned int i;
/* Figure out how many layers we can support via DSS */
for (i = 0; list && i < list->numHwLayers; i++) {
hwc_layer_t *layer = &list->hwLayers[i];
IMG_native_handle_t *handle = (IMG_native_handle_t *)layer->handle;
layer->compositionType = HWC_FRAMEBUFFER;
if (omap4_hwc_is_valid_layer(hwc_dev, layer, handle)) {
num->possible_overlay_layers++;
/* NV12 layers can only be rendered on scaling overlays */
if (scaled(layer) || is_NV12(handle))
num->scaled_layers++;
if (is_BGR(handle))
num->BGR++;
else if (is_RGB(handle))
num->RGB++;
else if (is_NV12(handle))
num->NV12++;
if (dockable(layer))
num->dockable++;
if (is_protected(layer))
num->protected++;
num->mem += mem1d(handle);
}
}
}
static void decide_supported_cloning(omap4_hwc_device_t *hwc_dev, struct counts *num)
{
omap4_hwc_ext_t *ext = &hwc_dev->ext;
int nonscaling_ovls = NUM_NONSCALING_OVERLAYS;
num->max_hw_overlays = MAX_HW_OVERLAYS;
/*
* We cannot atomically switch overlays from one display to another. First, they
* have to be disabled, and the disabling has to take effect on the current display.
* We keep track of the available number of overlays here.
*/
if (ext->dock.enabled && !(ext->mirror.enabled && !(num->dockable || ext->force_dock))) {
/* some overlays may already be used by the external display, so we account for this */
/* reserve just a video pipeline for HDMI if docking */
hwc_dev->ext_ovls = (num->dockable || ext->force_dock) ? 1 : 0;
num->max_hw_overlays -= max(hwc_dev->ext_ovls, hwc_dev->last_ext_ovls);
/* use mirroring transform if we are auto-switching to docking mode while mirroring*/
if (ext->mirror.enabled) {
ext->current = ext->mirror;
ext->current.docking = 1;
} else {
ext->current = ext->dock;
}
} else if (ext->mirror.enabled) {
/*
* otherwise, manage just from half the pipelines. NOTE: there is
* no danger of having used too many overlays for external display here.
*/
num->max_hw_overlays >>= 1;
nonscaling_ovls >>= 1;
hwc_dev->ext_ovls = MAX_HW_OVERLAYS - num->max_hw_overlays;
ext->current = ext->mirror;
} else {
num->max_hw_overlays -= hwc_dev->last_ext_ovls;
hwc_dev->ext_ovls = 0;
ext->current.enabled = 0;
}
/*
* :TRICKY: We may not have enough overlays on the external display. We "reserve" them
* here to figure out if mirroring is supported, but may not do mirroring for the first
* frame while the overlays required for it are cleared.
*/
hwc_dev->ext_ovls_wanted = hwc_dev->ext_ovls;
hwc_dev->ext_ovls = min(MAX_HW_OVERLAYS - hwc_dev->last_int_ovls, hwc_dev->ext_ovls);
/* if mirroring, we are limited by both internal and external overlays. However,
ext_ovls is always <= MAX_HW_OVERLAYS / 2 <= max_hw_overlays */
if (hwc_dev->ext_ovls && ext->current.enabled && !ext->current.docking)
num->max_hw_overlays = hwc_dev->ext_ovls;
num->max_scaling_overlays = num->max_hw_overlays - nonscaling_ovls;
}
static int can_dss_render_all(omap4_hwc_device_t *hwc_dev, struct counts *num)
{
omap4_hwc_ext_t *ext = &hwc_dev->ext;
int on_tv = ext->on_tv && ext->current.enabled;
int tform = ext->current.enabled && (ext->current.rotation || ext->current.hflip);
return !hwc_dev->force_sgx &&
/* must have at least one layer if using composition bypass to get sync object */
num->possible_overlay_layers &&
num->possible_overlay_layers <= num->max_hw_overlays &&
num->possible_overlay_layers == num->composited_layers &&
num->scaled_layers <= num->max_scaling_overlays &&
num->NV12 <= num->max_scaling_overlays &&
/* fits into TILER slot */
num->mem <= MAX_TILER_SLOT &&
/* we cannot clone non-NV12 transformed layers */
(!tform || num->NV12 == num->possible_overlay_layers) &&
/* HDMI cannot display BGR */
(num->BGR == 0 || (num->RGB == 0 && !on_tv) || !hwc_dev->flags_rgb_order);
}
static inline int can_dss_render_layer(omap4_hwc_device_t *hwc_dev,
hwc_layer_t *layer)
{
IMG_native_handle_t *handle = (IMG_native_handle_t *)layer->handle;
omap4_hwc_ext_t *ext = &hwc_dev->ext;
int on_tv = ext->on_tv && ext->current.enabled;
int tform = ext->current.enabled && (ext->current.rotation || ext->current.hflip);
return omap4_hwc_is_valid_layer(hwc_dev, layer, handle) &&
/* cannot rotate non-NV12 layers on external display */
(!tform || is_NV12(handle)) &&
/* skip non-NV12 layers if also using SGX (if nv12_only flag is set) */
(!hwc_dev->flags_nv12_only || (!hwc_dev->use_sgx || is_NV12(handle))) &&
/* make sure RGB ordering is consistent (if rgb_order flag is set) */
(!(hwc_dev->swap_rb ? is_RGB(handle) : is_BGR(handle)) ||
!hwc_dev->flags_rgb_order) &&
/* TV can only render RGB */
!(on_tv && is_BGR(handle));
}
static inline int display_area(struct dss2_ovl_info *o)
{
return o->cfg.win.w * o->cfg.win.h;
}
static int clone_layer(omap4_hwc_device_t *hwc_dev, int ix) {
struct dsscomp_setup_dispc_data *dsscomp = &hwc_dev->dsscomp_data;
omap4_hwc_ext_t *ext = &hwc_dev->ext;
int ext_ovl_ix = dsscomp->num_ovls - hwc_dev->post2_layers;
struct dss2_ovl_info *o = &dsscomp->ovls[dsscomp->num_ovls];
if (dsscomp->num_ovls >= MAX_HW_OVERLAYS) {
ALOGE("**** cannot clone layer #%d. using all %d overlays.", ix, dsscomp->num_ovls);
return -EBUSY;
}
memcpy(o, dsscomp->ovls + ix, sizeof(*o));
/* reserve overlays at end for other display */
o->cfg.ix = MAX_HW_OVERLAYS - 1 - ext_ovl_ix;
o->cfg.mgr_ix = 1;
o->addressing = OMAP_DSS_BUFADDR_OVL_IX;
o->ba = ix;
/* use distinct z values (to simplify z-order checking) */
o->cfg.zorder += hwc_dev->post2_layers;
omap4_hwc_adjust_ext_layer(&hwc_dev->ext, o);
dsscomp->num_ovls++;
return 0;
}
static int clone_external_layer(omap4_hwc_device_t *hwc_dev, int ix) {
struct dsscomp_setup_dispc_data *dsscomp = &hwc_dev->dsscomp_data;
omap4_hwc_ext_t *ext = &hwc_dev->ext;
/* mirror only 1 external layer */
struct dss2_ovl_info *o = &dsscomp->ovls[ix];
/* full screen video after transformation */
__u32 xres = o->cfg.crop.w, yres = o->cfg.crop.h;
if ((ext->current.rotation + o->cfg.rotation) & 1)
swap(xres, yres);
float xpy = ext->lcd_xpy * o->cfg.win.w / o->cfg.win.h;
if (o->cfg.rotation & 1)
xpy = o->cfg.crop.h / xpy / o->cfg.crop.w;
else
xpy = o->cfg.crop.h * xpy / o->cfg.crop.w;
if (ext->current.rotation & 1)
xpy = 1. / xpy;
/* adjust hdmi mode based on resolution */
if (xres != ext->last_xres_used ||
yres != ext->last_yres_used ||
xpy < ext->last_xpy * (1.f - ASPECT_RATIO_TOLERANCE) ||
xpy * (1.f - ASPECT_RATIO_TOLERANCE) > ext->last_xpy) {
ALOGD("set up HDMI for %d*%d\n", xres, yres);
if (omap4_hwc_set_best_hdmi_mode(hwc_dev, xres, yres, xpy)) {
ext->current.enabled = 0;
return -ENODEV;
}
}
struct hwc_rect region = {
.left = o->cfg.win.x, .top = o->cfg.win.y,
.right = o->cfg.win.x + o->cfg.win.w,
.bottom = o->cfg.win.y + o->cfg.win.h
};
set_ext_matrix(&hwc_dev->ext, region);
return clone_layer(hwc_dev, ix);
}
static int setup_mirroring(omap4_hwc_device_t *hwc_dev)
{
omap4_hwc_ext_t *ext = &hwc_dev->ext;
__u32 xres = WIDTH(ext->mirror_region);
__u32 yres = HEIGHT(ext->mirror_region);
if (ext->current.rotation & 1)
swap(xres, yres);
if (omap4_hwc_set_best_hdmi_mode(hwc_dev, xres, yres, ext->lcd_xpy))
return -ENODEV;
set_ext_matrix(ext, ext->mirror_region);
return 0;
}
static int omap4_hwc_prepare(struct hwc_composer_device *dev, hwc_layer_list_t* list)
{
omap4_hwc_device_t *hwc_dev = (omap4_hwc_device_t *)dev;
struct dsscomp_setup_dispc_data *dsscomp = &hwc_dev->dsscomp_data;
struct counts num = { .composited_layers = list ? list->numHwLayers : 0 };
unsigned int i, ix;
pthread_mutex_lock(&hwc_dev->lock);
memset(dsscomp, 0x0, sizeof(*dsscomp));
dsscomp->sync_id = sync_id++;
gather_layer_statistics(hwc_dev, &num, list);
decide_supported_cloning(hwc_dev, &num);
/* Disable the forced SGX rendering if there is only one layer */
if (hwc_dev->force_sgx && num.composited_layers <= 1)
hwc_dev->force_sgx = 0;
/* phase 3 logic */
if (can_dss_render_all(hwc_dev, &num)) {
/* All layers can be handled by the DSS -- don't use SGX for composition */
hwc_dev->use_sgx = 0;
hwc_dev->swap_rb = num.BGR != 0;
} else {
/* Use SGX for composition plus first 3 layers that are DSS renderable */
hwc_dev->use_sgx = 1;
hwc_dev->swap_rb = is_BGR_format(hwc_dev->fb_dev->base.format);
}
/* setup pipes */
dsscomp->num_ovls = hwc_dev->use_sgx;
int z = 0;
int fb_z = -1;
int scaled_gfx = 0;
int ix_docking = -1;
/* set up if DSS layers */
unsigned int mem_used = 0;
hwc_dev->ovls_blending = 0;
for (i = 0; list && i < list->numHwLayers; i++) {
hwc_layer_t *layer = &list->hwLayers[i];
IMG_native_handle_t *handle = (IMG_native_handle_t *)layer->handle;
if (dsscomp->num_ovls < num.max_hw_overlays &&
can_dss_render_layer(hwc_dev, layer) &&
(!hwc_dev->force_sgx ||
/* render protected and dockable layers via DSS */
is_protected(layer) ||
(hwc_dev->ext.current.docking && hwc_dev->ext.current.enabled && dockable(layer))) &&
mem_used + mem1d(handle) < MAX_TILER_SLOT &&
/* can't have a transparent overlay in the middle of the framebuffer stack */
!(is_BLENDED(layer) && fb_z >= 0)) {
/* render via DSS overlay */
mem_used += mem1d(handle);
layer->compositionType = HWC_OVERLAY;
/* clear FB above all opaque layers if rendering via SGX */
if (hwc_dev->use_sgx && !is_BLENDED(layer))
layer->hints |= HWC_HINT_CLEAR_FB;
/* see if any of the (non-backmost) overlays are doing blending */
else if (is_BLENDED(layer) && i > 0)
hwc_dev->ovls_blending = 1;
hwc_dev->buffers[dsscomp->num_ovls] = layer->handle;
omap4_hwc_setup_layer(hwc_dev,
&dsscomp->ovls[dsscomp->num_ovls],
layer,
z,
handle->iFormat,
handle->iWidth,
handle->iHeight);
dsscomp->ovls[dsscomp->num_ovls].cfg.ix = dsscomp->num_ovls;
dsscomp->ovls[dsscomp->num_ovls].addressing = OMAP_DSS_BUFADDR_LAYER_IX;
dsscomp->ovls[dsscomp->num_ovls].ba = dsscomp->num_ovls;
/* ensure GFX layer is never scaled */
if (dsscomp->num_ovls == 0) {
scaled_gfx = scaled(layer) || is_NV12(handle);
} else if (scaled_gfx && !scaled(layer) && !is_NV12(handle)) {
/* swap GFX layer with this one */
dsscomp->ovls[dsscomp->num_ovls].cfg.ix = 0;
dsscomp->ovls[0].cfg.ix = dsscomp->num_ovls;
scaled_gfx = 0;
}
/* remember largest dockable layer */
if (dockable(layer) &&
(ix_docking < 0 ||
display_area(&dsscomp->ovls[dsscomp->num_ovls]) > display_area(&dsscomp->ovls[ix_docking])))
ix_docking = dsscomp->num_ovls;
dsscomp->num_ovls++;
z++;
} else if (hwc_dev->use_sgx) {
if (fb_z < 0) {
/* NOTE: we are not handling transparent cutout for now */
fb_z = z;
z++;
} else {
/* move fb z-order up (by lowering dss layers) */
while (fb_z < z - 1)
dsscomp->ovls[1 + fb_z++].cfg.zorder--;
}
}
}
/* if scaling GFX (e.g. only 1 scaled surface) use a VID pipe */
if (scaled_gfx)
dsscomp->ovls[0].cfg.ix = dsscomp->num_ovls;
if (hwc_dev->use_sgx) {
/* assign a z-layer for fb */
if (fb_z < 0) {
if (num.composited_layers)
ALOGE("**** should have assigned z-layer for fb");
fb_z = z++;
}
hwc_dev->buffers[0] = NULL;
omap4_hwc_setup_layer_base(&dsscomp->ovls[0].cfg, fb_z,
hwc_dev->fb_dev->base.format,
1, /* FB is always premultiplied */
hwc_dev->fb_dev->base.width,
hwc_dev->fb_dev->base.height);
dsscomp->ovls[0].cfg.pre_mult_alpha = 1;
dsscomp->ovls[0].addressing = OMAP_DSS_BUFADDR_LAYER_IX;
dsscomp->ovls[0].ba = 0;
}
/* mirror layers */
hwc_dev->post2_layers = dsscomp->num_ovls;
omap4_hwc_ext_t *ext = &hwc_dev->ext;
if (ext->current.enabled && hwc_dev->ext_ovls) {
if (ext->current.docking && ix_docking >= 0) {
if (clone_external_layer(hwc_dev, ix_docking) == 0)
dsscomp->ovls[dsscomp->num_ovls - 1].cfg.zorder = z++;
} else if (ext->current.docking && ix_docking < 0 && ext->force_dock) {
ix_docking = dsscomp->num_ovls;
struct dss2_ovl_info *oi = &dsscomp->ovls[ix_docking];
omap4_hwc_setup_layer_base(&oi->cfg, 0, HAL_PIXEL_FORMAT_BGRA_8888, 1,
dock_image.width, dock_image.height);
oi->cfg.stride = dock_image.rowbytes;
if (clone_external_layer(hwc_dev, ix_docking) == 0) {
oi->addressing = OMAP_DSS_BUFADDR_FB;
oi->ba = 0;
z++;
}
} else if (!ext->current.docking) {
int res = 0;
/* reset mode if we are coming from docking */
if (ext->last.docking)
res = setup_mirroring(hwc_dev);
/* mirror all layers */
for (ix = 0; res == 0 && ix < hwc_dev->post2_layers; ix++) {
if (clone_layer(hwc_dev, ix))
break;
z++;
}
}
}
ext->last = ext->current;
if (z != dsscomp->num_ovls || dsscomp->num_ovls > MAX_HW_OVERLAYS)
ALOGE("**** used %d z-layers for %d overlays\n", z, dsscomp->num_ovls);
/* verify all z-orders and overlay indices are distinct */
for (i = z = ix = 0; i < dsscomp->num_ovls; i++) {
struct dss2_ovl_cfg *c = &dsscomp->ovls[i].cfg;
if (z & (1 << c->zorder))
ALOGE("**** used z-order #%d multiple times", c->zorder);
if (ix & (1 << c->ix))
ALOGE("**** used ovl index #%d multiple times", c->ix);
z |= 1 << c->zorder;
ix |= 1 << c->ix;
}
dsscomp->mode = DSSCOMP_SETUP_DISPLAY;
dsscomp->mgrs[0].ix = 0;
dsscomp->mgrs[0].alpha_blending = 1;
dsscomp->mgrs[0].swap_rb = hwc_dev->swap_rb;
dsscomp->num_mgrs = 1;
if (ext->current.enabled || hwc_dev->last_ext_ovls) {
dsscomp->mgrs[1] = dsscomp->mgrs[0];
dsscomp->mgrs[1].ix = 1;
dsscomp->num_mgrs++;
hwc_dev->ext_ovls = dsscomp->num_ovls - hwc_dev->post2_layers;
}
if (debug) {
ALOGD("prepare (%d) - %s (comp=%d, poss=%d/%d scaled, RGB=%d,BGR=%d,NV12=%d) (ext=%s%s%ddeg%s %dex/%dmx (last %dex,%din)\n",
dsscomp->sync_id,
hwc_dev->use_sgx ? "SGX+OVL" : "all-OVL",
num.composited_layers,
num.possible_overlay_layers, num.scaled_layers,
num.RGB, num.BGR, num.NV12,
ext->on_tv ? "tv+" : "",
ext->current.enabled ? ext->current.docking ? "dock+" : "mirror+" : "OFF+",
ext->current.rotation * 90,
ext->current.hflip ? "+hflip" : "",
hwc_dev->ext_ovls, num.max_hw_overlays, hwc_dev->last_ext_ovls, hwc_dev->last_int_ovls);
}
pthread_mutex_unlock(&hwc_dev->lock);
return 0;
}
static void omap4_hwc_reset_screen(omap4_hwc_device_t *hwc_dev)
{
static int first_set = 1;
int ret;
if (first_set) {
first_set = 0;
struct dsscomp_setup_dispc_data d = {
.num_mgrs = 1,
};
/* remove bootloader image from the screen as blank/unblank does not change the composition */
ret = ioctl(hwc_dev->dsscomp_fd, DSSCIOC_SETUP_DISPC, &d);
if (ret)
ALOGW("failed to remove bootloader image");
/* blank and unblank fd to make sure display is properly programmed on boot.
* This is needed because the bootloader can not be trusted.
*/
ret = ioctl(hwc_dev->fb_fd, FBIOBLANK, FB_BLANK_POWERDOWN);
if (ret)
ALOGW("failed to blank display");
ret = ioctl(hwc_dev->fb_fd, FBIOBLANK, FB_BLANK_UNBLANK);
if (ret)
ALOGW("failed to blank display");
}
}
static int omap4_hwc_set(struct hwc_composer_device *dev, hwc_display_t dpy,
hwc_surface_t sur, hwc_layer_list_t* list)
{
omap4_hwc_device_t *hwc_dev = (omap4_hwc_device_t *)dev;
struct dsscomp_setup_dispc_data *dsscomp = &hwc_dev->dsscomp_data;
int err = 0;
int invalidate;
pthread_mutex_lock(&hwc_dev->lock);
omap4_hwc_reset_screen(hwc_dev);
invalidate = hwc_dev->ext_ovls_wanted && !hwc_dev->ext_ovls;
if (debug)
dump_set_info(hwc_dev, list);
if (dpy && sur) {
// list can be NULL which means hwc is temporarily disabled.
// however, if dpy and sur are null it means we're turning the
// screen off. no shall not call eglSwapBuffers() in that case.
if (hwc_dev->use_sgx) {
if (!eglSwapBuffers((EGLDisplay)dpy, (EGLSurface)sur)) {
ALOGE("eglSwapBuffers error");
err = HWC_EGL_ERROR;
goto err_out;
}
}
//dump_dsscomp(dsscomp);
// signal the event thread that a post has happened
write(hwc_dev->pipe_fds[1], "s", 1);
if (hwc_dev->force_sgx > 0)
hwc_dev->force_sgx--;
err = hwc_dev->fb_dev->Post2((framebuffer_device_t *)hwc_dev->fb_dev,
hwc_dev->buffers,
hwc_dev->post2_layers,
dsscomp, sizeof(*dsscomp));
}
hwc_dev->last_ext_ovls = hwc_dev->ext_ovls;
hwc_dev->last_int_ovls = hwc_dev->post2_layers;
if (err)
ALOGE("Post2 error");
err_out:
pthread_mutex_unlock(&hwc_dev->lock);
if (invalidate && hwc_dev->procs && hwc_dev->procs->invalidate)
hwc_dev->procs->invalidate(hwc_dev->procs);
return err;
}
static void omap4_hwc_dump(struct hwc_composer_device *dev, char *buff, int buff_len)
{
omap4_hwc_device_t *hwc_dev = (omap4_hwc_device_t *)dev;
struct dsscomp_setup_dispc_data *dsscomp = &hwc_dev->dsscomp_data;
struct dump_buf log = {
.buf = buff,
.buf_len = buff_len,
};
int i;
dump_printf(&log, "omap4_hwc %d:\n", dsscomp->num_ovls);
dump_printf(&log, " idle timeout: %dms\n", hwc_dev->idle);
for (i = 0; i < dsscomp->num_ovls; i++) {
struct dss2_ovl_cfg *cfg = &dsscomp->ovls[i].cfg;
dump_printf(&log, " layer %d:\n", i);
dump_printf(&log, " enabled: %s\n",
cfg->enabled ? "true" : "false");
dump_printf(&log, " buff: %p %dx%d stride: %d\n",
hwc_dev->buffers[i], cfg->width, cfg->height, cfg->stride);
dump_printf(&log, " src: (%d,%d) %dx%d\n",
cfg->crop.x, cfg->crop.y, cfg->crop.w, cfg->crop.h);
dump_printf(&log, " dst: (%d,%d) %dx%d\n",
cfg->win.x, cfg->win.y, cfg->win.w, cfg->win.h);
dump_printf(&log, " ix: %d\n", cfg->ix);
dump_printf(&log, " zorder: %d\n\n", cfg->zorder);
}
}
static void free_png_image(omap4_hwc_device_t *hwc_dev, struct omap4_hwc_img *img)
{
memset(img, 0, sizeof(*img));
}
static int load_png_image(omap4_hwc_device_t *hwc_dev, char *path, struct omap4_hwc_img *img)
{
void *ptr = NULL;
png_bytepp row_pointers = NULL;
FILE *fd = fopen(path, "rb");
if (!fd) {
ALOGE("failed to open PNG file %s: (%d)", path, errno);
return -EINVAL;
}
const int SIZE_PNG_HEADER = 8;
__u8 header[SIZE_PNG_HEADER];
fread(header, 1, SIZE_PNG_HEADER, fd);
if (png_sig_cmp(header, 0, SIZE_PNG_HEADER)) {
ALOGE("%s is not a PNG file", path);
goto fail;
}
png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png_ptr)
goto fail_alloc;
png_infop info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr)
goto fail_alloc;
if (setjmp(png_jmpbuf(png_ptr)))
goto fail_alloc;
png_init_io(png_ptr, fd);
png_set_sig_bytes(png_ptr, SIZE_PNG_HEADER);
png_set_user_limits(png_ptr, limits.max_width, limits.max_height);
png_read_info(png_ptr, info_ptr);
__u8 bit_depth = png_get_bit_depth(png_ptr, info_ptr);
__u32 width = png_get_image_width(png_ptr, info_ptr);
__u32 height = png_get_image_height(png_ptr, info_ptr);
__u8 color_type = png_get_color_type(png_ptr, info_ptr);
switch (color_type) {
case PNG_COLOR_TYPE_PALETTE:
png_set_palette_to_rgb(png_ptr);
png_set_filler(png_ptr, 128, PNG_FILLER_AFTER);
break;
case PNG_COLOR_TYPE_GRAY:
if (bit_depth < 8) {
png_set_expand_gray_1_2_4_to_8(png_ptr);
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
png_set_tRNS_to_alpha(png_ptr);
} else {
png_set_filler(png_ptr, 128, PNG_FILLER_AFTER);
}
/* fall through */
case PNG_COLOR_TYPE_GRAY_ALPHA:
png_set_gray_to_rgb(png_ptr);
break;
case PNG_COLOR_TYPE_RGB:
png_set_filler(png_ptr, 128, PNG_FILLER_AFTER);
/* fall through */
case PNG_COLOR_TYPE_RGB_ALPHA:
png_set_bgr(png_ptr);
break;
default:
ALOGE("unsupported PNG color: %x", color_type);
goto fail_alloc;
}
if (bit_depth == 16)
png_set_strip_16(png_ptr);
const int bpp = 4;
img->size = ALIGN(width * height * bpp, 4096);
if (img->size > hwc_dev->img_mem_size) {
ALOGE("image does not fit into framebuffer area (%d > %d)", img->size, hwc_dev->img_mem_size);
goto fail_alloc;
}
img->ptr = hwc_dev->img_mem_ptr;
row_pointers = calloc(height, sizeof(*row_pointers));
if (!row_pointers) {
ALOGE("failed to allocate row pointers");
goto fail_alloc;
}
__u32 i;
for (i = 0; i < height; i++)
row_pointers[i] = img->ptr + i * width * bpp;
png_set_rows(png_ptr, info_ptr, row_pointers);
png_read_update_info(png_ptr, info_ptr);
img->rowbytes = png_get_rowbytes(png_ptr, info_ptr);
png_read_image(png_ptr, row_pointers);
png_read_end(png_ptr, NULL);
free(row_pointers);
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
fclose(fd);
img->width = width;
img->height = height;
return 0;
fail_alloc:
free_png_image(hwc_dev, img);
free(row_pointers);
if (!png_ptr || !info_ptr)
ALOGE("failed to allocate PNG structures");
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
fail:
fclose(fd);
return -EINVAL;
}
static int omap4_hwc_device_close(hw_device_t* device)
{
omap4_hwc_device_t *hwc_dev = (omap4_hwc_device_t *) device;;
if (hwc_dev) {
if (hwc_dev->dsscomp_fd >= 0)
close(hwc_dev->dsscomp_fd);
if (hwc_dev->hdmi_fb_fd >= 0)
close(hwc_dev->hdmi_fb_fd);
if (hwc_dev->fb_fd >= 0)
close(hwc_dev->fb_fd);
/* pthread will get killed when parent process exits */
pthread_mutex_destroy(&hwc_dev->lock);
free(hwc_dev);
}
return 0;
}
static int omap4_hwc_open_fb_hal(IMG_framebuffer_device_public_t **fb_dev)
{
const struct hw_module_t *psModule;
IMG_gralloc_module_public_t *psGrallocModule;
int err;
err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &psModule);
psGrallocModule = (IMG_gralloc_module_public_t *) psModule;
if(err)
goto err_out;
if (strcmp(psGrallocModule->base.common.author, "Imagination Technologies")) {
err = -EINVAL;
goto err_out;
}
*fb_dev = psGrallocModule->psFrameBufferDevice;
return 0;
err_out:
ALOGE("Composer HAL failed to load compatible Graphics HAL");
return err;
}
static void handle_hotplug(omap4_hwc_device_t *hwc_dev)
{
omap4_hwc_ext_t *ext = &hwc_dev->ext;
__u8 state = ext->hdmi_state;
pthread_mutex_lock(&hwc_dev->lock);
ext->dock.enabled = ext->mirror.enabled = 0;
if (state) {
/* check whether we can clone and/or dock */
char value[PROPERTY_VALUE_MAX];
property_get("persist.hwc.docking.enabled", value, "1");
ext->dock.enabled = atoi(value) > 0;
property_get("persist.hwc.mirroring.enabled", value, "1");
ext->mirror.enabled = atoi(value) > 0;
property_get("persist.hwc.avoid_mode_change", value, "1");
ext->avoid_mode_change = atoi(value) > 0;
/* get cloning transformation */
property_get("persist.hwc.docking.transform", value, "0");
ext->dock.rotation = atoi(value) & EXT_ROTATION;
ext->dock.hflip = (atoi(value) & EXT_HFLIP) > 0;
ext->dock.docking = 1;
property_get("persist.hwc.mirroring.transform", value, hwc_dev->fb_dev->base.height > hwc_dev->fb_dev->base.width ? "3" : "0");
ext->mirror.rotation = atoi(value) & EXT_ROTATION;
ext->mirror.hflip = (atoi(value) & EXT_HFLIP) > 0;
ext->mirror.docking = 0;
if (ext->force_dock) {
/* restrict to docking with no transform */
ext->mirror.enabled = 0;
ext->dock.rotation = 0;
ext->dock.hflip = 0;
if (!dock_image.rowbytes) {
property_get("persist.hwc.dock_image", value, "/vendor/res/images/dock/dock.png");
load_png_image(hwc_dev, value, &dock_image);
}
}
/* select best mode for mirroring */
if (ext->mirror.enabled) {
ext->current = ext->mirror;
ext->mirror_mode = 0;
if (setup_mirroring(hwc_dev) == 0) {
ext->mirror_mode = ext->last_mode;
ioctl(hwc_dev->hdmi_fb_fd, FBIOBLANK, FB_BLANK_UNBLANK);
} else
ext->mirror.enabled = 0;
}
} else {
ext->last_mode = 0;
}
ALOGI("external display changed (state=%d, mirror={%s tform=%ddeg%s}, dock={%s tform=%ddeg%s%s}, tv=%d", state,
ext->mirror.enabled ? "enabled" : "disabled",
ext->mirror.rotation * 90,
ext->mirror.hflip ? "+hflip" : "",
ext->dock.enabled ? "enabled" : "disabled",
ext->dock.rotation * 90,
ext->dock.hflip ? "+hflip" : "",
ext->force_dock ? " forced" : "",
ext->on_tv);
pthread_mutex_unlock(&hwc_dev->lock);
if (hwc_dev->procs && hwc_dev->procs->invalidate)
hwc_dev->procs->invalidate(hwc_dev->procs);
}
static void handle_uevents(omap4_hwc_device_t *hwc_dev, const char *s)
{
int dock = !strcmp(s, "change@/devices/virtual/switch/dock");
if (!dock &&
strcmp(s, "change@/devices/virtual/switch/hdmi"))
return;
s += strlen(s) + 1;
while(*s) {
if (!strncmp(s, "SWITCH_STATE=", strlen("SWITCH_STATE="))) {
int state = atoi(s + strlen("SWITCH_STATE="));
if (dock)
hwc_dev->ext.force_dock = state == 1;
else
hwc_dev->ext.hdmi_state = state == 1;
handle_hotplug(hwc_dev);
}
s += strlen(s) + 1;
}
}
static void *omap4_hwc_hdmi_thread(void *data)
{
omap4_hwc_device_t *hwc_dev = data;
static char uevent_desc[4096];
struct pollfd fds[2];
int invalidate = 0;
int timeout;
int err;
uevent_init();
fds[0].fd = uevent_get_fd();
fds[0].events = POLLIN;
fds[1].fd = hwc_dev->pipe_fds[0];
fds[1].events = POLLIN;
timeout = hwc_dev->idle ? hwc_dev->idle : -1;
memset(uevent_desc, 0, sizeof(uevent_desc));
do {
err = poll(fds, hwc_dev->idle ? 2 : 1, timeout);
if (err == 0) {
if (hwc_dev->idle) {
if (hwc_dev->procs && hwc_dev->procs->invalidate) {
pthread_mutex_lock(&hwc_dev->lock);
invalidate = !hwc_dev->force_sgx && hwc_dev->ovls_blending;
if (invalidate) {
hwc_dev->force_sgx = 2;
}
pthread_mutex_unlock(&hwc_dev->lock);
if (invalidate) {
hwc_dev->procs->invalidate(hwc_dev->procs);
timeout = -1;
}
}
continue;
}
}
if (err == -1) {
if (errno != EINTR)
ALOGE("event error: %m");
continue;
}
if (hwc_dev->idle && fds[1].revents & POLLIN) {
char c;
read(hwc_dev->pipe_fds[0], &c, 1);
if (!hwc_dev->force_sgx)
timeout = hwc_dev->idle ? hwc_dev->idle : -1;
}
if (fds[0].revents & POLLIN) {
/* keep last 2 zeroes to ensure double 0 termination */
uevent_next_event(uevent_desc, sizeof(uevent_desc) - 2);
handle_uevents(hwc_dev, uevent_desc);
}
} while (1);
return NULL;
}
static void omap4_hwc_registerProcs(struct hwc_composer_device* dev,
hwc_procs_t const* procs)
{
omap4_hwc_device_t *hwc_dev = (omap4_hwc_device_t *) dev;
hwc_dev->procs = (typeof(hwc_dev->procs)) procs;
}
static int omap4_hwc_device_open(const hw_module_t* module, const char* name,
hw_device_t** device)
{
omap4_hwc_module_t *hwc_mod = (omap4_hwc_module_t *)module;
omap4_hwc_device_t *hwc_dev;
int err = 0;
if (strcmp(name, HWC_HARDWARE_COMPOSER)) {
return -EINVAL;
}
if (!hwc_mod->fb_dev) {
err = omap4_hwc_open_fb_hal(&hwc_mod->fb_dev);
if (err)
return err;
if (!hwc_mod->fb_dev) {
ALOGE("Framebuffer HAL not opened before HWC");
return -EFAULT;
}
hwc_mod->fb_dev->bBypassPost = 1;
}
hwc_dev = (omap4_hwc_device_t *)malloc(sizeof(*hwc_dev));
if (hwc_dev == NULL)
return -ENOMEM;
memset(hwc_dev, 0, sizeof(*hwc_dev));
hwc_dev->base.common.tag = HARDWARE_DEVICE_TAG;
hwc_dev->base.common.version = HWC_DEVICE_API_VERSION;
hwc_dev->base.common.module = (hw_module_t *)module;
hwc_dev->base.common.close = omap4_hwc_device_close;
hwc_dev->base.prepare = omap4_hwc_prepare;
hwc_dev->base.set = omap4_hwc_set;
hwc_dev->base.dump = omap4_hwc_dump;
hwc_dev->base.registerProcs = omap4_hwc_registerProcs;
hwc_dev->fb_dev = hwc_mod->fb_dev;
*device = &hwc_dev->base.common;
hwc_dev->dsscomp_fd = open("/dev/dsscomp", O_RDWR);
if (hwc_dev->dsscomp_fd < 0) {
ALOGE("failed to open dsscomp (%d)", errno);
err = -errno;
goto done;
}
hwc_dev->hdmi_fb_fd = open("/dev/graphics/fb1", O_RDWR);
if (hwc_dev->hdmi_fb_fd < 0) {
ALOGE("failed to open hdmi fb (%d)", errno);
err = -errno;
goto done;
}
hwc_dev->fb_fd = open("/dev/graphics/fb0", O_RDWR);
if (hwc_dev->fb_fd < 0) {
ALOGE("failed to open fb (%d)", errno);
err = -errno;
goto done;
}
struct fb_fix_screeninfo fix;
if (ioctl(hwc_dev->fb_fd, FBIOGET_FSCREENINFO, &fix)) {
ALOGE("failed to get fb info (%d)", errno);
err = -errno;
goto done;
}
hwc_dev->img_mem_size = fix.smem_len;
hwc_dev->img_mem_ptr = mmap(NULL, fix.smem_len, PROT_WRITE, MAP_SHARED, hwc_dev->fb_fd, 0);
if (hwc_dev->img_mem_ptr == MAP_FAILED) {
ALOGE("failed to map fb memory");
err = -errno;
goto done;
}
hwc_dev->buffers = malloc(sizeof(buffer_handle_t) * MAX_HW_OVERLAYS);
if (!hwc_dev->buffers) {
err = -ENOMEM;
goto done;
}
int ret = ioctl(hwc_dev->dsscomp_fd, DSSCIOC_QUERY_DISPLAY, &hwc_dev->fb_dis);
if (ret) {
ALOGE("failed to get display info (%d): %m", errno);
err = -errno;
goto done;
}
hwc_dev->ext.lcd_xpy = (float) hwc_dev->fb_dis.width_in_mm / hwc_dev->fb_dis.timings.x_res /
hwc_dev->fb_dis.height_in_mm * hwc_dev->fb_dis.timings.y_res;
if (pipe(hwc_dev->pipe_fds) == -1) {
ALOGE("failed to event pipe (%d): %m", errno);
err = -errno;
goto done;
}
if (pthread_mutex_init(&hwc_dev->lock, NULL)) {
ALOGE("failed to create mutex (%d): %m", errno);
err = -errno;
goto done;
}
if (pthread_create(&hwc_dev->hdmi_thread, NULL, omap4_hwc_hdmi_thread, hwc_dev))
{
ALOGE("failed to create HDMI listening thread (%d): %m", errno);
err = -errno;
goto done;
}
/* get debug properties */
/* see if hwc is enabled at all */
char value[PROPERTY_VALUE_MAX];
property_get("debug.hwc.rgb_order", value, "1");
hwc_dev->flags_rgb_order = atoi(value);
property_get("debug.hwc.nv12_only", value, "0");
hwc_dev->flags_nv12_only = atoi(value);
property_get("debug.hwc.idle", value, "250");
hwc_dev->idle = atoi(value);
/* get the board specific clone properties */
/* 0:0:1280:720 */
if (property_get("persist.hwc.mirroring.region", value, "") <= 0 ||
sscanf(value, "%d:%d:%d:%d",
&hwc_dev->ext.mirror_region.left, &hwc_dev->ext.mirror_region.top,
&hwc_dev->ext.mirror_region.right, &hwc_dev->ext.mirror_region.bottom) != 4 ||
hwc_dev->ext.mirror_region.left >= hwc_dev->ext.mirror_region.right ||
hwc_dev->ext.mirror_region.top >= hwc_dev->ext.mirror_region.bottom) {
struct hwc_rect fb_region = { .right = hwc_dev->fb_dev->base.width, .bottom = hwc_dev->fb_dev->base.height };
hwc_dev->ext.mirror_region = fb_region;
}
ALOGI("clone region is set to (%d,%d) to (%d,%d)",
hwc_dev->ext.mirror_region.left, hwc_dev->ext.mirror_region.top,
hwc_dev->ext.mirror_region.right, hwc_dev->ext.mirror_region.bottom);
/* read switch state */
int sw_fd = open("/sys/class/switch/hdmi/state", O_RDONLY);
if (sw_fd >= 0) {
char value;
if (read(sw_fd, &value, 1) == 1)
hwc_dev->ext.hdmi_state = value == '1';
close(sw_fd);
}
sw_fd = open("/sys/class/switch/dock/state", O_RDONLY);
if (sw_fd >= 0) {
char value;
if (read(sw_fd, &value, 1) == 1)
hwc_dev->ext.force_dock = value == '1';
close(sw_fd);
}
handle_hotplug(hwc_dev);
ALOGI("omap4_hwc_device_open(rgb_order=%d nv12_only=%d)",
hwc_dev->flags_rgb_order, hwc_dev->flags_nv12_only);
done:
if (err && hwc_dev) {
if (hwc_dev->dsscomp_fd >= 0)
close(hwc_dev->dsscomp_fd);
if (hwc_dev->hdmi_fb_fd >= 0)
close(hwc_dev->hdmi_fb_fd);
if (hwc_dev->fb_fd >= 0)
close(hwc_dev->fb_fd);
pthread_mutex_destroy(&hwc_dev->lock);
free(hwc_dev->buffers);
free(hwc_dev);
}
return err;
}
static struct hw_module_methods_t omap4_hwc_module_methods = {
.open = omap4_hwc_device_open,
};
omap4_hwc_module_t HAL_MODULE_INFO_SYM = {
.base = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.module_api_version = HWC_MODULE_API_VERSION,
.hal_api_version = HARDWARE_HAL_API_VERSION,
.id = HWC_HARDWARE_MODULE_ID,
.name = "OMAP 44xx Hardware Composer HAL",
.author = "Texas Instruments",
.methods = &omap4_hwc_module_methods,
},
},
};