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path: root/drivers/video/omap2/dss/dsi.c
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Diffstat (limited to 'drivers/video/omap2/dss/dsi.c')
-rw-r--r--drivers/video/omap2/dss/dsi.c190
1 files changed, 11 insertions, 179 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index c951a75e7021..bd0ff1d64497 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -3648,161 +3648,6 @@ static void dsi_proto_timings(struct omap_dss_device *dssdev)
enter_hs_mode_lat, exit_hs_mode_lat);
}
-
-#define DSI_DECL_VARS \
- int __dsi_cb = 0; u32 __dsi_cv = 0;
-
-#define DSI_FLUSH(dsidev, ch) \
- if (__dsi_cb > 0) { \
- /*DSSDBG("sending long packet %#010x\n", __dsi_cv);*/ \
- dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_PAYLOAD(ch), __dsi_cv); \
- __dsi_cb = __dsi_cv = 0; \
- }
-
-#define DSI_PUSH(dsidev, ch, data) \
- do { \
- __dsi_cv |= (data) << (__dsi_cb * 8); \
- /*DSSDBG("cv = %#010x, cb = %d\n", __dsi_cv, __dsi_cb);*/ \
- if (++__dsi_cb > 3) \
- DSI_FLUSH(dsidev, ch); \
- } while (0)
-
-static int dsi_update_screen_l4(struct omap_dss_device *dssdev,
- int x, int y, int w, int h)
-{
- /* Note: supports only 24bit colors in 32bit container */
- struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev);
- struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
- int first = 1;
- int fifo_stalls = 0;
- int max_dsi_packet_size;
- int max_data_per_packet;
- int max_pixels_per_packet;
- int pixels_left;
- int bytespp = dssdev->ctrl.pixel_size / 8;
- int scr_width;
- u32 __iomem *data;
- int start_offset;
- int horiz_inc;
- int current_x;
- struct omap_overlay *ovl;
-
- debug_irq = 0;
-
- DSSDBG("dsi_update_screen_l4 (%d,%d %dx%d)\n",
- x, y, w, h);
-
- ovl = dssdev->manager->overlays[0];
-
- if (ovl->info.color_mode != OMAP_DSS_COLOR_RGB24U)
- return -EINVAL;
-
- if (dssdev->ctrl.pixel_size != 24)
- return -EINVAL;
-
- scr_width = ovl->info.screen_width;
- data = ovl->info.vaddr;
-
- start_offset = scr_width * y + x;
- horiz_inc = scr_width - w;
- current_x = x;
-
- /* We need header(4) + DCSCMD(1) + pixels(numpix*bytespp) bytes
- * in fifo */
-
- /* When using CPU, max long packet size is TX buffer size */
- max_dsi_packet_size = dsi->vc[0].fifo_size * 32 * 4;
-
- /* we seem to get better perf if we divide the tx fifo to half,
- and while the other half is being sent, we fill the other half
- max_dsi_packet_size /= 2; */
-
- max_data_per_packet = max_dsi_packet_size - 4 - 1;
-
- max_pixels_per_packet = max_data_per_packet / bytespp;
-
- DSSDBG("max_pixels_per_packet %d\n", max_pixels_per_packet);
-
- pixels_left = w * h;
-
- DSSDBG("total pixels %d\n", pixels_left);
-
- data += start_offset;
-
- while (pixels_left > 0) {
- /* 0x2c = write_memory_start */
- /* 0x3c = write_memory_continue */
- u8 dcs_cmd = first ? 0x2c : 0x3c;
- int pixels;
- DSI_DECL_VARS;
- first = 0;
-
-#if 1
- /* using fifo not empty */
- /* TX_FIFO_NOT_EMPTY */
- while (FLD_GET(dsi_read_reg(dsidev, DSI_VC_CTRL(0)), 5, 5)) {
- fifo_stalls++;
- if (fifo_stalls > 0xfffff) {
- DSSERR("fifo stalls overflow, pixels left %d\n",
- pixels_left);
- dsi_if_enable(dsidev, 0);
- return -EIO;
- }
- udelay(1);
- }
-#elif 1
- /* using fifo emptiness */
- while ((REG_GET(dsidev, DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 <
- max_dsi_packet_size) {
- fifo_stalls++;
- if (fifo_stalls > 0xfffff) {
- DSSERR("fifo stalls overflow, pixels left %d\n",
- pixels_left);
- dsi_if_enable(dsidev, 0);
- return -EIO;
- }
- }
-#else
- while ((REG_GET(dsidev, DSI_TX_FIFO_VC_EMPTINESS,
- 7, 0) + 1) * 4 == 0) {
- fifo_stalls++;
- if (fifo_stalls > 0xfffff) {
- DSSERR("fifo stalls overflow, pixels left %d\n",
- pixels_left);
- dsi_if_enable(dsidev, 0);
- return -EIO;
- }
- }
-#endif
- pixels = min(max_pixels_per_packet, pixels_left);
-
- pixels_left -= pixels;
-
- dsi_vc_write_long_header(dsidev, 0, DSI_DT_DCS_LONG_WRITE,
- 1 + pixels * bytespp, 0);
-
- DSI_PUSH(dsidev, 0, dcs_cmd);
-
- while (pixels-- > 0) {
- u32 pix = __raw_readl(data++);
-
- DSI_PUSH(dsidev, 0, (pix >> 16) & 0xff);
- DSI_PUSH(dsidev, 0, (pix >> 8) & 0xff);
- DSI_PUSH(dsidev, 0, (pix >> 0) & 0xff);
-
- current_x++;
- if (current_x == x+w) {
- current_x = x;
- data += horiz_inc;
- }
- }
-
- DSI_FLUSH(dsidev, 0);
- }
-
- return 0;
-}
-
static void dsi_update_screen_dispc(struct omap_dss_device *dssdev,
u16 x, u16 y, u16 w, u16 h)
{
@@ -3970,11 +3815,9 @@ int omap_dsi_prepare_update(struct omap_dss_device *dssdev,
dsi_perf_mark_setup(dsidev);
- if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
- dss_setup_partial_planes(dssdev, x, y, w, h,
- enlarge_update_area);
- dispc_set_lcd_size(dssdev->manager->id, *w, *h);
- }
+ dss_setup_partial_planes(dssdev, x, y, w, h,
+ enlarge_update_area);
+ dispc_set_lcd_size(dssdev->manager->id, *w, *h);
return 0;
}
@@ -3996,27 +3839,16 @@ int omap_dsi_update(struct omap_dss_device *dssdev,
* see rather obscure HW error happening, as DSS halts. */
BUG_ON(x % 2 == 1);
- if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
- dsi->framedone_callback = callback;
- dsi->framedone_data = data;
-
- dsi->update_region.x = x;
- dsi->update_region.y = y;
- dsi->update_region.w = w;
- dsi->update_region.h = h;
- dsi->update_region.device = dssdev;
-
- dsi_update_screen_dispc(dssdev, x, y, w, h);
- } else {
- int r;
+ dsi->framedone_callback = callback;
+ dsi->framedone_data = data;
- r = dsi_update_screen_l4(dssdev, x, y, w, h);
- if (r)
- return r;
+ dsi->update_region.x = x;
+ dsi->update_region.y = y;
+ dsi->update_region.w = w;
+ dsi->update_region.h = h;
+ dsi->update_region.device = dssdev;
- dsi_perf_show(dsidev, "L4");
- callback(0, data);
- }
+ dsi_update_screen_dispc(dssdev, x, y, w, h);
return 0;
}

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