OMAP: DSS2: omapfb driver
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
diff --git a/drivers/video/omap2/omapfb/omapfb-ioctl.c b/drivers/video/omap2/omapfb/omapfb-ioctl.c
new file mode 100644
index 0000000..4c4bafd
--- /dev/null
+++ b/drivers/video/omap2/omapfb/omapfb-ioctl.c
@@ -0,0 +1,755 @@
+/*
+ * 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->get_resolution(display, &dw, &dh);
+
+ if (x + w > dw || y + h > dh)
+ return -EINVAL;
+
+ return display->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;
+
+ omapfb_lock(fbdev);
+ lock_fb_info(fbi);
+
+ r = omapfb_update_window_nolock(fbi, x, y, w, h);
+
+ unlock_fb_info(fbi);
+ omapfb_unlock(fbdev);
+
+ 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->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->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 || !display->get_update_mode)
+ return -EINVAL;
+
+ m = display->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->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->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;
+ } p;
+
+ int r = 0;
+
+ switch (cmd) {
+ case OMAPFB_SYNC_GFX:
+ DBG("ioctl SYNC_GFX\n");
+ if (!display || !display->sync) {
+ /* DSS1 never returns an error here, so we neither */
+ /*r = -EINVAL;*/
+ break;
+ }
+
+ r = display->sync(display);
+ break;
+
+ case OMAPFB_UPDATE_WINDOW_OLD:
+ DBG("ioctl UPDATE_WINDOW_OLD\n");
+ if (!display || !display->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->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->wait_vsync(display);
+ 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->run_test) {
+ r = -EINVAL;
+ break;
+ }
+
+ r = display->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->run_test) {
+ r = -EINVAL;
+ break;
+ }
+
+ r = display->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->enable_te) {
+ r = -ENODEV;
+ break;
+ }
+
+ r = display->enable_te(display, !!p.tearsync_info.enabled);
+
+ 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;
+}
+
+