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Commit ae0a246a authored by Alan Cox's avatar Alan Cox Committed by Dave Airlie
Browse files

gma500: Add the base elements of CDV hotplug support 



Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 68cb638f

drivers/gpu/drm/gma500/cdv_device.c

+39 −2
Original line number Diff line number Diff line
@@ -462,13 +462,48 @@ static void cdv_get_core_freq(struct drm_device *dev) 
	}

}



static void cdv_hotplug_work_func(struct work_struct *work)

{

        struct drm_psb_private *dev_priv = container_of(work, struct drm_psb_private,

							hotplug_work);                 

        struct drm_device *dev = dev_priv->dev;



        /* Just fire off a uevent and let userspace tell us what to do */

        drm_helper_hpd_irq_event(dev);

}                       



/* The core driver has received a hotplug IRQ. We are in IRQ context

   so extract the needed information and kick off queued processing */

   

static int cdv_hotplug_event(struct drm_device *dev)

{

	struct drm_psb_private *dev_priv = dev->dev_private;

	schedule_work(&dev_priv->hotplug_work);

	REG_WRITE(PORT_HOTPLUG_STAT, REG_READ(PORT_HOTPLUG_STAT));

	return 1;

}



static void cdv_hotplug_enable(struct drm_device *dev, bool on)

{

	if (on) {

		u32 hotplug = REG_READ(PORT_HOTPLUG_EN);

		hotplug |= HDMIB_HOTPLUG_INT_EN | HDMIC_HOTPLUG_INT_EN |

			   HDMID_HOTPLUG_INT_EN | CRT_HOTPLUG_INT_EN;

		REG_WRITE(PORT_HOTPLUG_EN, hotplug);

	}  else {

		REG_WRITE(PORT_HOTPLUG_EN, 0);

		REG_WRITE(PORT_HOTPLUG_STAT, REG_READ(PORT_HOTPLUG_STAT));

	}	

}



static int cdv_chip_setup(struct drm_device *dev)

{

	struct drm_psb_private *dev_priv = dev->dev_private;

	INIT_WORK(&dev_priv->hotplug_work, cdv_hotplug_work_func);

	cdv_get_core_freq(dev);

	gma_intel_opregion_init(dev);

	psb_intel_init_bios(dev);

	REG_WRITE(PORT_HOTPLUG_EN, 0);

	REG_WRITE(PORT_HOTPLUG_STAT, REG_READ(PORT_HOTPLUG_STAT));

	cdv_hotplug_enable(dev, false);

	return 0;

}
@@ -489,6 +524,8 @@ const struct psb_ops cdv_chip_ops = { 
	.crtc_funcs = &cdv_intel_crtc_funcs,



	.output_init = cdv_output_init,

	.hotplug = cdv_hotplug_event,

	.hotplug_enable = cdv_hotplug_enable,



#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE

	.backlight_init = cdv_backlight_init,

drivers/gpu/drm/gma500/psb_drv.h

+5 −0
Original line number Diff line number Diff line
@@ -626,6 +626,11 @@ struct drm_psb_private { 
	uint32_t msi_addr;

	uint32_t msi_data;



	/*

	 * Hotplug handling

	 */



	struct work_struct hotplug_work;



	/*

	 * LID-Switch

drivers/gpu/drm/gma500/psb_intel_reg.h

+4 −1
Original line number Diff line number Diff line
@@ -219,7 +219,7 @@ 
#define DPLLB_LVDS_P2_CLOCK_DIV_14	(0 << 24)	/* i915 */

#define DPLLB_LVDS_P2_CLOCK_DIV_7	(1 << 24)	/* i915 */

#define DPLL_P2_CLOCK_DIV_MASK		0x03000000	/* i915 */

#define DPLL_FPA01_P1_POST_DIV_MASK	0x00ff0000	/* i915 */

#define DPLL_FPA0h1_P1_POST_DIV_MASK	0x00ff0000	/* i915 */

#define DPLL_LOCK			(1 << 15)	/* CDV */



/*
@@ -346,6 +346,9 @@ 
#define FP_M2_DIV_SHIFT			0



#define PORT_HOTPLUG_EN		0x61110

#define HDMIB_HOTPLUG_INT_EN		(1 << 29)

#define HDMIC_HOTPLUG_INT_EN		(1 << 28)

#define HDMID_HOTPLUG_INT_EN		(1 << 27)

#define SDVOB_HOTPLUG_INT_EN		(1 << 26)

#define SDVOC_HOTPLUG_INT_EN		(1 << 25)

#define TV_HOTPLUG_INT_EN		(1 << 18)