fbdev: sh_mipi_dsi: Allow LCDC board callbacks

Update the MIPI-DSI driver to make use of the
LCD panel callbacks in the LCDC platform data.

Without this patch MIPI panels cannot use board
specific LCDC callbacks to control power and/or
back light.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/video/sh_mipi_dsi.c b/drivers/video/sh_mipi_dsi.c
index 148ee27cf81a..b40dc423cbdf 100644
--- a/drivers/video/sh_mipi_dsi.c
+++ b/drivers/video/sh_mipi_dsi.c
@@ -50,6 +50,9 @@ struct sh_mipi {
         void __iomem    *linkbase;
         struct clk      *dsit_clk;
         struct clk      *dsip_clk;
+        void *next_board_data;
+        void (*next_display_on)(void *board_data, struct fb_info *info);
+        void (*next_display_off)(void *board_data);
 };
 
 static struct sh_mipi *mipi_dsi[MAX_SH_MIPI_DSI];
@@ -122,12 +125,18 @@ static void mipi_display_on(void *arg, struct fb_info *info)
         struct sh_mipi *mipi = arg;
 
         sh_mipi_dsi_enable(mipi, true);
+
+        if (mipi->next_display_on)
+                mipi->next_display_on(mipi->next_board_data, info);
 }
 
 static void mipi_display_off(void *arg)
 {
         struct sh_mipi *mipi = arg;
 
+        if (mipi->next_display_off)
+                mipi->next_display_off(mipi->next_board_data);
+
         sh_mipi_dsi_enable(mipi, false);
 }
 
@@ -443,6 +452,11 @@ static int __init sh_mipi_probe(struct platform_device *pdev)
         mutex_unlock(&array_lock);
         platform_set_drvdata(pdev, mipi);
 
+        /* Save original LCDC callbacks */
+        mipi->next_board_data = pdata->lcd_chan->board_cfg.board_data;
+        mipi->next_display_on = pdata->lcd_chan->board_cfg.display_on;
+        mipi->next_display_off = pdata->lcd_chan->board_cfg.display_off;
+
         /* Set up LCDC callbacks */
         pdata->lcd_chan->board_cfg.board_data = mipi;
         pdata->lcd_chan->board_cfg.display_on = mipi_display_on;