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OpenCloudOS-Kernel/drivers/video/omap2/omapfb/omapfb-ioctl.c

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/*
* linux/drivers/video/omap2/omapfb-ioctl.c
*
* Copyright (C) 2008 Nokia Corporation
* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
*
* Some code and ideas taken from drivers/video/omap/ driver
* by Imre Deak.
*
* 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 <linux/fb.h>
#include <linux/device.h>
#include <linux/uaccess.h>
#include <linux/platform_device.h>
#include <linux/mm.h>
#include <linux/omapfb.h>
#include <linux/vmalloc.h>
#include <plat/display.h>
#include <plat/vrfb.h>
#include <plat/vram.h>
#include "omapfb.h"
static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_device *fbdev = ofbi->fbdev;
struct omap_overlay *ovl;
struct omap_overlay_info info;
int r = 0;
DBG("omapfb_setup_plane\n");
if (ofbi->num_overlays != 1) {
r = -EINVAL;
goto out;
}
/* XXX uses only the first overlay */
ovl = ofbi->overlays[0];
if (pi->enabled && !ofbi->region.size) {
/*
* This plane's memory was freed, can't enable it
* until it's reallocated.
*/
r = -EINVAL;
goto out;
}
ovl->get_overlay_info(ovl, &info);
info.pos_x = pi->pos_x;
info.pos_y = pi->pos_y;
info.out_width = pi->out_width;
info.out_height = pi->out_height;
info.enabled = pi->enabled;
r = ovl->set_overlay_info(ovl, &info);
if (r)
goto out;
if (ovl->manager) {
r = ovl->manager->apply(ovl->manager);
if (r)
goto out;
}
out:
if (r)
dev_err(fbdev->dev, "setup_plane failed\n");
return r;
}
static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
if (ofbi->num_overlays != 1) {
memset(pi, 0, sizeof(*pi));
} else {
struct omap_overlay_info *ovli;
struct omap_overlay *ovl;
ovl = ofbi->overlays[0];
ovli = &ovl->info;
pi->pos_x = ovli->pos_x;
pi->pos_y = ovli->pos_y;
pi->enabled = ovli->enabled;
pi->channel_out = 0; /* xxx */
pi->mirror = 0;
pi->out_width = ovli->out_width;
pi->out_height = ovli->out_height;
}
return 0;
}
static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_device *fbdev = ofbi->fbdev;
struct omapfb2_mem_region *rg;
int r, i;
size_t size;
if (mi->type > OMAPFB_MEMTYPE_MAX)
return -EINVAL;
size = PAGE_ALIGN(mi->size);
rg = &ofbi->region;
for (i = 0; i < ofbi->num_overlays; i++) {
if (ofbi->overlays[i]->info.enabled)
return -EBUSY;
}
if (rg->size != size || rg->type != mi->type) {
r = omapfb_realloc_fbmem(fbi, size, mi->type);
if (r) {
dev_err(fbdev->dev, "realloc fbmem failed\n");
return r;
}
}
return 0;
}
static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_mem_region *rg;
rg = &ofbi->region;
memset(mi, 0, sizeof(*mi));
mi->size = rg->size;
mi->type = rg->type;
return 0;
}
static int omapfb_update_window_nolock(struct fb_info *fbi,
u32 x, u32 y, u32 w, u32 h)
{
struct omap_dss_device *display = fb2display(fbi);
u16 dw, dh;
if (!display)
return 0;
if (w == 0 || h == 0)
return 0;
display->driver->get_resolution(display, &dw, &dh);
if (x + w > dw || y + h > dh)
return -EINVAL;
return display->driver->update(display, x, y, w, h);
}
/* This function is exported for SGX driver use */
int omapfb_update_window(struct fb_info *fbi,
u32 x, u32 y, u32 w, u32 h)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_device *fbdev = ofbi->fbdev;
int r;
if (!lock_fb_info(fbi))
return -ENODEV;
omapfb_lock(fbdev);
r = omapfb_update_window_nolock(fbi, x, y, w, h);
omapfb_unlock(fbdev);
unlock_fb_info(fbi);
return r;
}
EXPORT_SYMBOL(omapfb_update_window);
static int omapfb_set_update_mode(struct fb_info *fbi,
enum omapfb_update_mode mode)
{
struct omap_dss_device *display = fb2display(fbi);
enum omap_dss_update_mode um;
int r;
if (!display || !display->driver->set_update_mode)
return -EINVAL;
switch (mode) {
case OMAPFB_UPDATE_DISABLED:
um = OMAP_DSS_UPDATE_DISABLED;
break;
case OMAPFB_AUTO_UPDATE:
um = OMAP_DSS_UPDATE_AUTO;
break;
case OMAPFB_MANUAL_UPDATE:
um = OMAP_DSS_UPDATE_MANUAL;
break;
default:
return -EINVAL;
}
r = display->driver->set_update_mode(display, um);
return r;
}
static int omapfb_get_update_mode(struct fb_info *fbi,
enum omapfb_update_mode *mode)
{
struct omap_dss_device *display = fb2display(fbi);
enum omap_dss_update_mode m;
if (!display)
return -EINVAL;
if (!display->driver->get_update_mode) {
*mode = OMAPFB_AUTO_UPDATE;
return 0;
}
m = display->driver->get_update_mode(display);
switch (m) {
case OMAP_DSS_UPDATE_DISABLED:
*mode = OMAPFB_UPDATE_DISABLED;
break;
case OMAP_DSS_UPDATE_AUTO:
*mode = OMAPFB_AUTO_UPDATE;
break;
case OMAP_DSS_UPDATE_MANUAL:
*mode = OMAPFB_MANUAL_UPDATE;
break;
default:
BUG();
}
return 0;
}
/* XXX this color key handling is a hack... */
static struct omapfb_color_key omapfb_color_keys[2];
static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
struct omapfb_color_key *ck)
{
struct omap_overlay_manager_info info;
enum omap_dss_trans_key_type kt;
int r;
mgr->get_manager_info(mgr, &info);
if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
info.trans_enabled = false;
omapfb_color_keys[mgr->id] = *ck;
r = mgr->set_manager_info(mgr, &info);
if (r)
return r;
r = mgr->apply(mgr);
return r;
}
switch (ck->key_type) {
case OMAPFB_COLOR_KEY_GFX_DST:
kt = OMAP_DSS_COLOR_KEY_GFX_DST;
break;
case OMAPFB_COLOR_KEY_VID_SRC:
kt = OMAP_DSS_COLOR_KEY_VID_SRC;
break;
default:
return -EINVAL;
}
info.default_color = ck->background;
info.trans_key = ck->trans_key;
info.trans_key_type = kt;
info.trans_enabled = true;
omapfb_color_keys[mgr->id] = *ck;
r = mgr->set_manager_info(mgr, &info);
if (r)
return r;
r = mgr->apply(mgr);
return r;
}
static int omapfb_set_color_key(struct fb_info *fbi,
struct omapfb_color_key *ck)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_device *fbdev = ofbi->fbdev;
int r;
int i;
struct omap_overlay_manager *mgr = NULL;
omapfb_lock(fbdev);
for (i = 0; i < ofbi->num_overlays; i++) {
if (ofbi->overlays[i]->manager) {
mgr = ofbi->overlays[i]->manager;
break;
}
}
if (!mgr) {
r = -EINVAL;
goto err;
}
r = _omapfb_set_color_key(mgr, ck);
err:
omapfb_unlock(fbdev);
return r;
}
static int omapfb_get_color_key(struct fb_info *fbi,
struct omapfb_color_key *ck)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_device *fbdev = ofbi->fbdev;
struct omap_overlay_manager *mgr = NULL;
int r = 0;
int i;
omapfb_lock(fbdev);
for (i = 0; i < ofbi->num_overlays; i++) {
if (ofbi->overlays[i]->manager) {
mgr = ofbi->overlays[i]->manager;
break;
}
}
if (!mgr) {
r = -EINVAL;
goto err;
}
*ck = omapfb_color_keys[mgr->id];
err:
omapfb_unlock(fbdev);
return r;
}
static int omapfb_memory_read(struct fb_info *fbi,
struct omapfb_memory_read *mr)
{
struct omap_dss_device *display = fb2display(fbi);
void *buf;
int r;
if (!display || !display->driver->memory_read)
return -ENOENT;
if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
return -EFAULT;
if (mr->w * mr->h * 3 > mr->buffer_size)
return -EINVAL;
buf = vmalloc(mr->buffer_size);
if (!buf) {
DBG("vmalloc failed\n");
return -ENOMEM;
}
r = display->driver->memory_read(display, buf, mr->buffer_size,
mr->x, mr->y, mr->w, mr->h);
if (r > 0) {
if (copy_to_user(mr->buffer, buf, mr->buffer_size))
r = -EFAULT;
}
vfree(buf);
return r;
}
static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
struct omapfb_ovl_colormode *mode)
{
int ovl_idx = mode->overlay_idx;
int mode_idx = mode->mode_idx;
struct omap_overlay *ovl;
enum omap_color_mode supported_modes;
struct fb_var_screeninfo var;
int i;
if (ovl_idx >= fbdev->num_overlays)
return -ENODEV;
ovl = fbdev->overlays[ovl_idx];
supported_modes = ovl->supported_modes;
mode_idx = mode->mode_idx;
for (i = 0; i < sizeof(supported_modes) * 8; i++) {
if (!(supported_modes & (1 << i)))
continue;
/*
* It's possible that the FB doesn't support a mode
* that is supported by the overlay, so call the
* following here.
*/
if (dss_mode_to_fb_mode(1 << i, &var) < 0)
continue;
mode_idx--;
if (mode_idx < 0)
break;
}
if (i == sizeof(supported_modes) * 8)
return -ENOENT;
mode->bits_per_pixel = var.bits_per_pixel;
mode->nonstd = var.nonstd;
mode->red = var.red;
mode->green = var.green;
mode->blue = var.blue;
mode->transp = var.transp;
return 0;
}
static int omapfb_wait_for_go(struct fb_info *fbi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
int r = 0;
int i;
for (i = 0; i < ofbi->num_overlays; ++i) {
struct omap_overlay *ovl = ofbi->overlays[i];
r = ovl->wait_for_go(ovl);
if (r)
break;
}
return r;
}
int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_device *fbdev = ofbi->fbdev;
struct omap_dss_device *display = fb2display(fbi);
union {
struct omapfb_update_window_old uwnd_o;
struct omapfb_update_window uwnd;
struct omapfb_plane_info plane_info;
struct omapfb_caps caps;
struct omapfb_mem_info mem_info;
struct omapfb_color_key color_key;
struct omapfb_ovl_colormode ovl_colormode;
enum omapfb_update_mode update_mode;
int test_num;
struct omapfb_memory_read memory_read;
struct omapfb_vram_info vram_info;
struct omapfb_tearsync_info tearsync_info;
struct omapfb_display_info display_info;
} p;
int r = 0;
switch (cmd) {
case OMAPFB_SYNC_GFX:
DBG("ioctl SYNC_GFX\n");
if (!display || !display->driver->sync) {
/* DSS1 never returns an error here, so we neither */
/*r = -EINVAL;*/
break;
}
r = display->driver->sync(display);
break;
case OMAPFB_UPDATE_WINDOW_OLD:
DBG("ioctl UPDATE_WINDOW_OLD\n");
if (!display || !display->driver->update) {
r = -EINVAL;
break;
}
if (copy_from_user(&p.uwnd_o,
(void __user *)arg,
sizeof(p.uwnd_o))) {
r = -EFAULT;
break;
}
r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
p.uwnd_o.width, p.uwnd_o.height);
break;
case OMAPFB_UPDATE_WINDOW:
DBG("ioctl UPDATE_WINDOW\n");
if (!display || !display->driver->update) {
r = -EINVAL;
break;
}
if (copy_from_user(&p.uwnd, (void __user *)arg,
sizeof(p.uwnd))) {
r = -EFAULT;
break;
}
r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
p.uwnd.width, p.uwnd.height);
break;
case OMAPFB_SETUP_PLANE:
DBG("ioctl SETUP_PLANE\n");
if (copy_from_user(&p.plane_info, (void __user *)arg,
sizeof(p.plane_info)))
r = -EFAULT;
else
r = omapfb_setup_plane(fbi, &p.plane_info);
break;
case OMAPFB_QUERY_PLANE:
DBG("ioctl QUERY_PLANE\n");
r = omapfb_query_plane(fbi, &p.plane_info);
if (r < 0)
break;
if (copy_to_user((void __user *)arg, &p.plane_info,
sizeof(p.plane_info)))
r = -EFAULT;
break;
case OMAPFB_SETUP_MEM:
DBG("ioctl SETUP_MEM\n");
if (copy_from_user(&p.mem_info, (void __user *)arg,
sizeof(p.mem_info)))
r = -EFAULT;
else
r = omapfb_setup_mem(fbi, &p.mem_info);
break;
case OMAPFB_QUERY_MEM:
DBG("ioctl QUERY_MEM\n");
r = omapfb_query_mem(fbi, &p.mem_info);
if (r < 0)
break;
if (copy_to_user((void __user *)arg, &p.mem_info,
sizeof(p.mem_info)))
r = -EFAULT;
break;
case OMAPFB_GET_CAPS:
DBG("ioctl GET_CAPS\n");
if (!display) {
r = -EINVAL;
break;
}
memset(&p.caps, 0, sizeof(p.caps));
if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
r = -EFAULT;
break;
case OMAPFB_GET_OVERLAY_COLORMODE:
DBG("ioctl GET_OVERLAY_COLORMODE\n");
if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
sizeof(p.ovl_colormode))) {
r = -EFAULT;
break;
}
r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
if (r < 0)
break;
if (copy_to_user((void __user *)arg, &p.ovl_colormode,
sizeof(p.ovl_colormode)))
r = -EFAULT;
break;
case OMAPFB_SET_UPDATE_MODE:
DBG("ioctl SET_UPDATE_MODE\n");
if (get_user(p.update_mode, (int __user *)arg))
r = -EFAULT;
else
r = omapfb_set_update_mode(fbi, p.update_mode);
break;
case OMAPFB_GET_UPDATE_MODE:
DBG("ioctl GET_UPDATE_MODE\n");
r = omapfb_get_update_mode(fbi, &p.update_mode);
if (r)
break;
if (put_user(p.update_mode,
(enum omapfb_update_mode __user *)arg))
r = -EFAULT;
break;
case OMAPFB_SET_COLOR_KEY:
DBG("ioctl SET_COLOR_KEY\n");
if (copy_from_user(&p.color_key, (void __user *)arg,
sizeof(p.color_key)))
r = -EFAULT;
else
r = omapfb_set_color_key(fbi, &p.color_key);
break;
case OMAPFB_GET_COLOR_KEY:
DBG("ioctl GET_COLOR_KEY\n");
r = omapfb_get_color_key(fbi, &p.color_key);
if (r)
break;
if (copy_to_user((void __user *)arg, &p.color_key,
sizeof(p.color_key)))
r = -EFAULT;
break;
case OMAPFB_WAITFORVSYNC:
DBG("ioctl WAITFORVSYNC\n");
if (!display) {
r = -EINVAL;
break;
}
r = display->manager->wait_for_vsync(display->manager);
break;
case OMAPFB_WAITFORGO:
DBG("ioctl WAITFORGO\n");
if (!display) {
r = -EINVAL;
break;
}
r = omapfb_wait_for_go(fbi);
break;
/* LCD and CTRL tests do the same thing for backward
* compatibility */
case OMAPFB_LCD_TEST:
DBG("ioctl LCD_TEST\n");
if (get_user(p.test_num, (int __user *)arg)) {
r = -EFAULT;
break;
}
if (!display || !display->driver->run_test) {
r = -EINVAL;
break;
}
r = display->driver->run_test(display, p.test_num);
break;
case OMAPFB_CTRL_TEST:
DBG("ioctl CTRL_TEST\n");
if (get_user(p.test_num, (int __user *)arg)) {
r = -EFAULT;
break;
}
if (!display || !display->driver->run_test) {
r = -EINVAL;
break;
}
r = display->driver->run_test(display, p.test_num);
break;
case OMAPFB_MEMORY_READ:
DBG("ioctl MEMORY_READ\n");
if (copy_from_user(&p.memory_read, (void __user *)arg,
sizeof(p.memory_read))) {
r = -EFAULT;
break;
}
r = omapfb_memory_read(fbi, &p.memory_read);
break;
case OMAPFB_GET_VRAM_INFO: {
unsigned long vram, free, largest;
DBG("ioctl GET_VRAM_INFO\n");
omap_vram_get_info(&vram, &free, &largest);
p.vram_info.total = vram;
p.vram_info.free = free;
p.vram_info.largest_free_block = largest;
if (copy_to_user((void __user *)arg, &p.vram_info,
sizeof(p.vram_info)))
r = -EFAULT;
break;
}
case OMAPFB_SET_TEARSYNC: {
DBG("ioctl SET_TEARSYNC\n");
if (copy_from_user(&p.tearsync_info, (void __user *)arg,
sizeof(p.tearsync_info))) {
r = -EFAULT;
break;
}
if (!display->driver->enable_te) {
r = -ENODEV;
break;
}
r = display->driver->enable_te(display,
!!p.tearsync_info.enabled);
break;
}
case OMAPFB_GET_DISPLAY_INFO: {
u16 xres, yres;
DBG("ioctl GET_DISPLAY_INFO\n");
if (display == NULL) {
r = -ENODEV;
break;
}
display->driver->get_resolution(display, &xres, &yres);
p.display_info.xres = xres;
p.display_info.yres = yres;
p.display_info.width = 0;
p.display_info.height = 0;
if (copy_to_user((void __user *)arg, &p.display_info,
sizeof(p.display_info)))
r = -EFAULT;
break;
}
default:
dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
r = -EINVAL;
}
if (r < 0)
DBG("ioctl failed: %d\n", r);
return r;
}
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