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From 8d239b2c7f05acf2f732d292f5d7c5abc3c7ce1a Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Date: Tue, 26 May 2009 10:49:24 +0300
Subject: [PATCH 078/146] DSS2: Enable replication logic feature
Replication logic will make colors a bit better on active matrix LCD
when the fb is in 16bpp mode and the LCD interface is 18/24bpp.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
---
drivers/video/omap2/dss/dispc.c | 19 +++++++++++++++++++
drivers/video/omap2/dss/display.c | 34 ++++++++++++++++++++++++++++++++++
drivers/video/omap2/dss/dss.h | 3 +++
drivers/video/omap2/dss/manager.c | 5 +++++
4 files changed, 61 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 2471cfe..e936c59 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -908,6 +908,20 @@ static void _dispc_set_vid_color_conv(enum omap_plane plane, bool enable)
dispc_write_reg(dispc_reg_att[plane], val);
}
+void dispc_enable_replication(enum omap_plane plane, bool enable)
+{
+ int bit;
+
+ if (plane == OMAP_DSS_GFX)
+ bit = 5;
+ else
+ bit = 10;
+
+ enable_clocks(1);
+ REG_FLD_MOD(dispc_reg_att[plane], enable, bit, bit);
+ enable_clocks(0);
+}
+
void dispc_set_lcd_size(u16 width, u16 height)
{
u32 val;
@@ -3293,6 +3307,11 @@ void dispc_setup_partial_planes(struct omap_display *display,
pi->mirror,
pi->global_alpha);
+ if (dss_use_replication(display, ovl->info.color_mode))
+ dispc_enable_replication(ovl->id, true);
+ else
+ dispc_enable_replication(ovl->id, false);
+
dispc_enable_plane(ovl->id, 1);
}
diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c
index 50ced29..77a6dc4 100644
--- a/drivers/video/omap2/dss/display.c
+++ b/drivers/video/omap2/dss/display.c
@@ -411,6 +411,40 @@ static int default_get_recommended_bpp(struct omap_display *display)
}
}
+/* Checks if replication logic should be used. Only use for active matrix,
+ * when overlay is in RGB12U or RGB16 mode, and LCD interface is
+ * 18bpp or 24bpp */
+bool dss_use_replication(struct omap_display *display,
+ enum omap_color_mode mode)
+{
+ int bpp;
+
+ if (mode != OMAP_DSS_COLOR_RGB12U && mode != OMAP_DSS_COLOR_RGB16)
+ return false;
+
+ if (display->type == OMAP_DISPLAY_TYPE_DPI &&
+ (display->panel->config & OMAP_DSS_LCD_TFT) == 0)
+ return false;
+
+ switch (display->type) {
+ case OMAP_DISPLAY_TYPE_DPI:
+ bpp = display->hw_config.u.dpi.data_lines;
+ break;
+ case OMAP_DISPLAY_TYPE_VENC:
+ case OMAP_DISPLAY_TYPE_SDI:
+ bpp = 24;
+ break;
+ case OMAP_DISPLAY_TYPE_DBI:
+ case OMAP_DISPLAY_TYPE_DSI:
+ bpp = display->ctrl->pixel_size;
+ break;
+ default:
+ BUG();
+ }
+
+ return bpp > 16;
+}
+
void dss_init_displays(struct platform_device *pdev)
{
struct omap_dss_board_info *pdata = pdev->dev.platform_data;
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index 20cef0a..d51ffe4 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -173,6 +173,8 @@ void dss_uninit_displays(struct platform_device *pdev);
int dss_suspend_all_displays(void);
int dss_resume_all_displays(void);
struct omap_display *dss_get_display(int no);
+bool dss_use_replication(struct omap_display *display,
+ enum omap_color_mode mode);
/* manager */
int dss_init_overlay_managers(struct platform_device *pdev);
@@ -280,6 +282,7 @@ void dispc_go(enum omap_channel channel);
void dispc_enable_lcd_out(bool enable);
void dispc_enable_digit_out(bool enable);
int dispc_enable_plane(enum omap_plane plane, bool enable);
+void dispc_enable_replication(enum omap_plane plane, bool enable);
void dispc_set_parallel_interface_mode(enum omap_parallel_interface_mode mode);
void dispc_set_tft_data_lines(u8 data_lines);
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index 1e6cd8d..8d5d00f 100644
--- a/drivers/video/omap2/dss/manager.c
+++ b/drivers/video/omap2/dss/manager.c
@@ -474,6 +474,11 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
continue;
}
+ if (dss_use_replication(display, ovl->info.color_mode))
+ dispc_enable_replication(ovl->id, true);
+ else
+ dispc_enable_replication(ovl->id, false);
+
dispc_enable_plane(ovl->id, 1);
}
--
1.6.2.4
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