fbdev: mxsfb: Add support for mx6sl and mx6sx

mx6sl and mx6sx share the same LCD controller as mx23 and mx28.

Add support for it.

The basic difference is the number of clocks that are required:

- mx23/mx28: only one clock
- mx6sl: two clocks
- mx6sx: three clocks

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/video/fbdev/mxsfb.c b/drivers/video/fbdev/mxsfb.c
index accf48a2..f8ac4a4 100644
--- a/drivers/video/fbdev/mxsfb.c
+++ b/drivers/video/fbdev/mxsfb.c
@@ -172,6 +172,8 @@ struct mxsfb_info {
 	struct fb_info fb_info;
 	struct platform_device *pdev;
 	struct clk *clk;
+	struct clk *clk_axi;
+	struct clk *clk_disp_axi;
 	void __iomem *base;	/* registers */
 	unsigned allocated_size;
 	int enabled;
@@ -331,6 +333,11 @@ static void mxsfb_enable_controller(struct fb_info *fb_info)
 		}
 	}
 
+	if (host->clk_axi)
+		clk_prepare_enable(host->clk_axi);
+
+	if (host->clk_disp_axi)
+		clk_prepare_enable(host->clk_disp_axi);
 	clk_prepare_enable(host->clk);
 	clk_set_rate(host->clk, PICOS2KHZ(fb_info->var.pixclock) * 1000U);
 
@@ -374,6 +381,10 @@ static void mxsfb_disable_controller(struct fb_info *fb_info)
 	writel(reg & ~VDCTRL4_SYNC_SIGNALS_ON, host->base + LCDC_VDCTRL4);
 
 	clk_disable_unprepare(host->clk);
+	if (host->clk_disp_axi)
+		clk_disable_unprepare(host->clk_disp_axi);
+	if (host->clk_axi)
+		clk_disable_unprepare(host->clk_axi);
 
 	host->enabled = 0;
 
@@ -867,6 +878,14 @@ static int mxsfb_probe(struct platform_device *pdev)
 		goto fb_release;
 	}
 
+	host->clk_axi = devm_clk_get(&host->pdev->dev, "axi");
+	if (IS_ERR(host->clk_axi))
+		host->clk_axi = NULL;
+
+	host->clk_disp_axi = devm_clk_get(&host->pdev->dev, "disp_axi");
+	if (IS_ERR(host->clk_disp_axi))
+		host->clk_disp_axi = NULL;
+
 	host->reg_lcd = devm_regulator_get(&pdev->dev, "lcd");
 	if (IS_ERR(host->reg_lcd))
 		host->reg_lcd = NULL;