MLK-12364-1: HDMI: Add hdmi power supply management

Add HDMI power supply management in hdmi driver.

Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>

diff --git a/drivers/video/fbdev/mxc/mxc_hdmi.c b/drivers/video/fbdev/mxc/mxc_hdmi.c
index c1b5126..513ab16 100644 (file)
--- a/drivers/video/fbdev/mxc/mxc_hdmi.c
+++ b/drivers/video/fbdev/mxc/mxc_hdmi.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2015 Freescale Semiconductor, Inc.
+ * Copyright (C) 2011-2016 Freescale Semiconductor, Inc.
  *
  * The code contained herein is licensed under the GNU General Public
  * License. You may obtain a copy of the GNU General Public License
@@ -188,6 +188,7 @@ struct mxc_hdmi *g_hdmi;
 
 static bool hdmi_inited;
 static bool hdcp_init;
+static struct regulator *hdmi_regulator;
 
 extern const struct fb_videomode mxc_cea_mode[64];
 extern void mxc_hdmi_cec_handle(u16 cec_stat);
@@ -2834,6 +2835,18 @@ static int mxc_hdmi_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, hdmi);
 
+       hdmi_regulator = devm_regulator_get(&pdev->dev, "HDMI");
+       if (!IS_ERR(hdmi_regulator)) {
+               ret = regulator_enable(hdmi_regulator);
+               if (ret) {
+                       dev_err(&pdev->dev, "enable 5v hdmi regulator failed\n");
+                       goto edispdrv;
+               }
+       } else {
+               hdmi_regulator = NULL;
+               dev_warn(&pdev->dev, "No hdmi 5v supply\n");
+       }
+
        return 0;
 edispdrv:
        iounmap(hdmi->gpr_base);
@@ -2863,6 +2876,10 @@ static int mxc_hdmi_remove(struct platform_device *pdev)
        /* No new work will be scheduled, wait for running ISR */
        free_irq(irq, hdmi);
        kfree(hdmi);
+
+       if (hdmi_regulator)
+               regulator_disable(hdmi_regulator);
+
        g_hdmi = NULL;
 
        return 0;