From 3de78a9dbf173952270e761c21f2df3a7e1ed256 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@linux.intel.com>
Date: Fri, 15 Jul 2011 17:33:43 +0100
Subject: [PATCH] gma500: Make crtc count a property of the device

Octavian Purdila posted a patch that sets num_crtc to 1 for Moorestown, but
Oaktrail has 2 so we need to split Oaktrail/Moorestown more sensibly, and
also cope with some other differences later on.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/staging/gma500/framebuffer.c  |  2 +-
 drivers/staging/gma500/mdfld_device.c |  1 +
 drivers/staging/gma500/mrst_device.c  | 41 +++++++++++++++++++++++++++
 drivers/staging/gma500/psb_device.c   |  1 +
 drivers/staging/gma500/psb_drv.h      |  1 +
 5 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gma500/framebuffer.c b/drivers/staging/gma500/framebuffer.c
index d890a5091cd2..ebfde13ec18f 100644
--- a/drivers/staging/gma500/framebuffer.c
+++ b/drivers/staging/gma500/framebuffer.c
@@ -578,7 +578,7 @@ int psb_fbdev_init(struct drm_device *dev)
 	dev_priv->fbdev = fbdev;
 	fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
 
-	drm_fb_helper_init(dev, &fbdev->psb_fb_helper, 2,
+	drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs,
 							INTELFB_CONN_LIMIT);
 
 	drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
diff --git a/drivers/staging/gma500/mdfld_device.c b/drivers/staging/gma500/mdfld_device.c
index f258b0620a9d..f47aeb7a2039 100644
--- a/drivers/staging/gma500/mdfld_device.c
+++ b/drivers/staging/gma500/mdfld_device.c
@@ -691,6 +691,7 @@ const struct psb_ops mdfld_chip_ops = {
 	.name = "Medfield",
 	.accel_2d = 0,
 	.pipes = 3,
+	.crtcs = 2,
 	.sgx_offset = MRST_SGX_OFFSET,
 
 	.chip_setup = mid_chip_setup,
diff --git a/drivers/staging/gma500/mrst_device.c b/drivers/staging/gma500/mrst_device.c
index 436580d02ef7..3d525a032135 100644
--- a/drivers/staging/gma500/mrst_device.c
+++ b/drivers/staging/gma500/mrst_device.c
@@ -24,9 +24,12 @@
 #include "psb_drv.h"
 #include "psb_reg.h"
 #include "psb_intel_reg.h"
+#include <asm/mrst.h>
 #include <asm/intel_scu_ipc.h>
 #include "mid_bios.h"
 
+static const struct psb_ops oaktrail_chip_ops;
+
 /* IPC message and command defines used to enable/disable mipi panel voltages */
 #define IPC_MSG_PANEL_ON_OFF    0xE9
 #define IPC_CMD_PANEL_ON        1
@@ -352,10 +355,48 @@ static int mrst_power_up(struct drm_device *dev)
 	return 0;
 }
 
+static int mrst_chip_setup(struct drm_device *dev)
+{
+	struct drm_psb_private *dev_priv = dev->dev_private;
+
+#if defined(CONFIG_X86_MRST)
+	if (mrst_identify_cpu())
+		return mid_chip_setup(dev);
+#endif
+	dev_priv->ops = &oaktrail_chip_ops;
+	/* Check - may be better to go via BIOS paths ? */
+	return mid_chip_setup(dev);
+}
+	
 const struct psb_ops mrst_chip_ops = {
 	.name = "Moorestown",
 	.accel_2d = 1,
 	.pipes = 1,
+	.crtcs = 1,
+	.sgx_offset = MRST_SGX_OFFSET,
+
+	.chip_setup = mrst_chip_setup,
+	.crtc_helper = &mrst_helper_funcs,
+	.crtc_funcs = &psb_intel_crtc_funcs,
+
+	.output_init = mrst_output_init,
+
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+	.backlight_init = mrst_backlight_init,
+#endif
+
+	.init_pm = mrst_init_pm,
+	.save_regs = mrst_save_display_registers,
+	.restore_regs = mrst_restore_display_registers,
+	.power_down = mrst_power_down,
+	.power_up = mrst_power_up,
+};
+
+static const struct psb_ops oaktrail_chip_ops = {
+	.name = "Oaktrail",
+	.accel_2d = 1,
+	.pipes = 2,
+	.crtcs = 2,
 	.sgx_offset = MRST_SGX_OFFSET,
 
 	.chip_setup = mid_chip_setup,
diff --git a/drivers/staging/gma500/psb_device.c b/drivers/staging/gma500/psb_device.c
index 1e117f0f2098..46591323595a 100644
--- a/drivers/staging/gma500/psb_device.c
+++ b/drivers/staging/gma500/psb_device.c
@@ -331,6 +331,7 @@ const struct psb_ops psb_chip_ops = {
 	.name = "Poulsbo",
 	.accel_2d = 1,
 	.pipes = 2,
+	.crtcs = 2,
 	.sgx_offset = PSB_SGX_OFFSET,
 	.chip_setup = psb_chip_setup,
 
diff --git a/drivers/staging/gma500/psb_drv.h b/drivers/staging/gma500/psb_drv.h
index daf3ca5e6517..8184c2349d14 100644
--- a/drivers/staging/gma500/psb_drv.h
+++ b/drivers/staging/gma500/psb_drv.h
@@ -622,6 +622,7 @@ struct psb_ops {
 	const char *name;
 	unsigned int accel_2d:1;
 	int pipes;		/* Number of output pipes */
+	int crtcs;		/* Number of CRTCs */
 	int sgx_offset;		/* Base offset of SGX device */
 
 	/* Sub functions */
-- 
2.39.5