Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 332 insertions, 0 deletions

diff --git a/drivers/gpu/drm/gma500/mid_bios.c b/drivers/gpu/drm/gma500/mid_bios.c
new file mode 100644
index 000000000..7e76790c6
--- /dev/null
+++ b/drivers/gpu/drm/gma500/mid_bios.c
@@ -0,0 +1,332 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/**************************************************************************
+ * Copyright (c) 2011, Intel Corporation.
+ * All Rights Reserved.
+ *
+ **************************************************************************/
+
+/* TODO
+ * - Split functions by vbt type
+ * - Make them all take drm_device
+ * - Check ioremap failures
+ */
+
+#include <drm/drm.h>
+
+#include "mid_bios.h"
+#include "psb_drv.h"
+
+static void mid_get_fuse_settings(struct drm_device *dev)
+{
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	struct pci_dev *pdev = to_pci_dev(dev->dev);
+	struct pci_dev *pci_root =
+		pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
+					    0, 0);
+	uint32_t fuse_value = 0;
+	uint32_t fuse_value_tmp = 0;
+
+#define FB_REG06 0xD0810600
+#define FB_MIPI_DISABLE  (1 << 11)
+#define FB_REG09 0xD0810900
+#define FB_SKU_MASK  0x7000
+#define FB_SKU_SHIFT 12
+#define FB_SKU_100 0
+#define FB_SKU_100L 1
+#define FB_SKU_83 2
+	if (pci_root == NULL) {
+		WARN_ON(1);
+		return;
+	}
+
+
+	pci_write_config_dword(pci_root, 0xD0, FB_REG06);
+	pci_read_config_dword(pci_root, 0xD4, &fuse_value);
+
+	/* FB_MIPI_DISABLE doesn't mean LVDS on with Medfield */
+	if (IS_MRST(dev))
+		dev_priv->iLVDS_enable = fuse_value & FB_MIPI_DISABLE;
+
+	DRM_INFO("internal display is %s\n",
+		 dev_priv->iLVDS_enable ? "LVDS display" : "MIPI display");
+
+	 /* Prevent runtime suspend at start*/
+	 if (dev_priv->iLVDS_enable) {
+		dev_priv->is_lvds_on = true;
+		dev_priv->is_mipi_on = false;
+	} else {
+		dev_priv->is_mipi_on = true;
+		dev_priv->is_lvds_on = false;
+	}
+
+	dev_priv->video_device_fuse = fuse_value;
+
+	pci_write_config_dword(pci_root, 0xD0, FB_REG09);
+	pci_read_config_dword(pci_root, 0xD4, &fuse_value);
+
+	dev_dbg(dev->dev, "SKU values is 0x%x.\n", fuse_value);
+	fuse_value_tmp = (fuse_value & FB_SKU_MASK) >> FB_SKU_SHIFT;
+
+	dev_priv->fuse_reg_value = fuse_value;
+
+	switch (fuse_value_tmp) {
+	case FB_SKU_100:
+		dev_priv->core_freq = 200;
+		break;
+	case FB_SKU_100L:
+		dev_priv->core_freq = 100;
+		break;
+	case FB_SKU_83:
+		dev_priv->core_freq = 166;
+		break;
+	default:
+		dev_warn(dev->dev, "Invalid SKU values, SKU value = 0x%08x\n",
+								fuse_value_tmp);
+		dev_priv->core_freq = 0;
+	}
+	dev_dbg(dev->dev, "LNC core clk is %dMHz.\n", dev_priv->core_freq);
+	pci_dev_put(pci_root);
+}
+
+/*
+ *	Get the revison ID, B0:D2:F0;0x08
+ */
+static void mid_get_pci_revID(struct drm_psb_private *dev_priv)
+{
+	uint32_t platform_rev_id = 0;
+	struct pci_dev *pdev = to_pci_dev(dev_priv->dev.dev);
+	int domain = pci_domain_nr(pdev->bus);
+	struct pci_dev *pci_gfx_root =
+		pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(2, 0));
+
+	if (pci_gfx_root == NULL) {
+		WARN_ON(1);
+		return;
+	}
+	pci_read_config_dword(pci_gfx_root, 0x08, &platform_rev_id);
+	dev_priv->platform_rev_id = (uint8_t) platform_rev_id;
+	pci_dev_put(pci_gfx_root);
+	dev_dbg(dev_priv->dev.dev, "platform_rev_id is %x\n", dev_priv->platform_rev_id);
+}
+
+struct mid_vbt_header {
+	u32 signature;
+	u8 revision;
+} __packed;
+
+/* The same for r0 and r1 */
+struct vbt_r0 {
+	struct mid_vbt_header vbt_header;
+	u8 size;
+	u8 checksum;
+} __packed;
+
+struct vbt_r10 {
+	struct mid_vbt_header vbt_header;
+	u8 checksum;
+	u16 size;
+	u8 panel_count;
+	u8 primary_panel_idx;
+	u8 secondary_panel_idx;
+	u8 __reserved[5];
+} __packed;
+
+static int read_vbt_r0(u32 addr, struct vbt_r0 *vbt)
+{
+	void __iomem *vbt_virtual;
+
+	vbt_virtual = ioremap(addr, sizeof(*vbt));
+	if (vbt_virtual == NULL)
+		return -1;
+
+	memcpy_fromio(vbt, vbt_virtual, sizeof(*vbt));
+	iounmap(vbt_virtual);
+
+	return 0;
+}
+
+static int read_vbt_r10(u32 addr, struct vbt_r10 *vbt)
+{
+	void __iomem *vbt_virtual;
+
+	vbt_virtual = ioremap(addr, sizeof(*vbt));
+	if (!vbt_virtual)
+		return -1;
+
+	memcpy_fromio(vbt, vbt_virtual, sizeof(*vbt));
+	iounmap(vbt_virtual);
+
+	return 0;
+}
+
+static int mid_get_vbt_data_r0(struct drm_psb_private *dev_priv, u32 addr)
+{
+	struct vbt_r0 vbt;
+	void __iomem *gct_virtual;
+	struct gct_r0 gct;
+	u8 bpi;
+
+	if (read_vbt_r0(addr, &vbt))
+		return -1;
+
+	gct_virtual = ioremap(addr + sizeof(vbt), vbt.size - sizeof(vbt));
+	if (!gct_virtual)
+		return -1;
+	memcpy_fromio(&gct, gct_virtual, sizeof(gct));
+	iounmap(gct_virtual);
+
+	bpi = gct.PD.BootPanelIndex;
+	dev_priv->gct_data.bpi = bpi;
+	dev_priv->gct_data.pt = gct.PD.PanelType;
+	dev_priv->gct_data.DTD = gct.panel[bpi].DTD;
+	dev_priv->gct_data.Panel_Port_Control =
+		gct.panel[bpi].Panel_Port_Control;
+	dev_priv->gct_data.Panel_MIPI_Display_Descriptor =
+		gct.panel[bpi].Panel_MIPI_Display_Descriptor;
+
+	return 0;
+}
+
+static int mid_get_vbt_data_r1(struct drm_psb_private *dev_priv, u32 addr)
+{
+	struct vbt_r0 vbt;
+	void __iomem *gct_virtual;
+	struct gct_r1 gct;
+	u8 bpi;
+
+	if (read_vbt_r0(addr, &vbt))
+		return -1;
+
+	gct_virtual = ioremap(addr + sizeof(vbt), vbt.size - sizeof(vbt));
+	if (!gct_virtual)
+		return -1;
+	memcpy_fromio(&gct, gct_virtual, sizeof(gct));
+	iounmap(gct_virtual);
+
+	bpi = gct.PD.BootPanelIndex;
+	dev_priv->gct_data.bpi = bpi;
+	dev_priv->gct_data.pt = gct.PD.PanelType;
+	dev_priv->gct_data.DTD = gct.panel[bpi].DTD;
+	dev_priv->gct_data.Panel_Port_Control =
+		gct.panel[bpi].Panel_Port_Control;
+	dev_priv->gct_data.Panel_MIPI_Display_Descriptor =
+		gct.panel[bpi].Panel_MIPI_Display_Descriptor;
+
+	return 0;
+}
+
+static int mid_get_vbt_data_r10(struct drm_psb_private *dev_priv, u32 addr)
+{
+	struct vbt_r10 vbt;
+	void __iomem *gct_virtual;
+	struct gct_r10 *gct;
+	struct oaktrail_timing_info *dp_ti = &dev_priv->gct_data.DTD;
+	struct gct_r10_timing_info *ti;
+	int ret = -1;
+
+	if (read_vbt_r10(addr, &vbt))
+		return -1;
+
+	gct = kmalloc_array(vbt.panel_count, sizeof(*gct), GFP_KERNEL);
+	if (!gct)
+		return -ENOMEM;
+
+	gct_virtual = ioremap(addr + sizeof(vbt),
+			sizeof(*gct) * vbt.panel_count);
+	if (!gct_virtual)
+		goto out;
+	memcpy_fromio(gct, gct_virtual, sizeof(*gct));
+	iounmap(gct_virtual);
+
+	dev_priv->gct_data.bpi = vbt.primary_panel_idx;
+	dev_priv->gct_data.Panel_MIPI_Display_Descriptor =
+		gct[vbt.primary_panel_idx].Panel_MIPI_Display_Descriptor;
+
+	ti = &gct[vbt.primary_panel_idx].DTD;
+	dp_ti->pixel_clock = ti->pixel_clock;
+	dp_ti->hactive_hi = ti->hactive_hi;
+	dp_ti->hactive_lo = ti->hactive_lo;
+	dp_ti->hblank_hi = ti->hblank_hi;
+	dp_ti->hblank_lo = ti->hblank_lo;
+	dp_ti->hsync_offset_hi = ti->hsync_offset_hi;
+	dp_ti->hsync_offset_lo = ti->hsync_offset_lo;
+	dp_ti->hsync_pulse_width_hi = ti->hsync_pulse_width_hi;
+	dp_ti->hsync_pulse_width_lo = ti->hsync_pulse_width_lo;
+	dp_ti->vactive_hi = ti->vactive_hi;
+	dp_ti->vactive_lo = ti->vactive_lo;
+	dp_ti->vblank_hi = ti->vblank_hi;
+	dp_ti->vblank_lo = ti->vblank_lo;
+	dp_ti->vsync_offset_hi = ti->vsync_offset_hi;
+	dp_ti->vsync_offset_lo = ti->vsync_offset_lo;
+	dp_ti->vsync_pulse_width_hi = ti->vsync_pulse_width_hi;
+	dp_ti->vsync_pulse_width_lo = ti->vsync_pulse_width_lo;
+
+	ret = 0;
+out:
+	kfree(gct);
+	return ret;
+}
+
+static void mid_get_vbt_data(struct drm_psb_private *dev_priv)
+{
+	struct drm_device *dev = &dev_priv->dev;
+	struct pci_dev *pdev = to_pci_dev(dev->dev);
+	u32 addr;
+	u8 __iomem *vbt_virtual;
+	struct mid_vbt_header vbt_header;
+	struct pci_dev *pci_gfx_root =
+		pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
+					    0, PCI_DEVFN(2, 0));
+	int ret = -1;
+
+	/* Get the address of the platform config vbt */
+	pci_read_config_dword(pci_gfx_root, 0xFC, &addr);
+	pci_dev_put(pci_gfx_root);
+
+	dev_dbg(dev->dev, "drm platform config address is %x\n", addr);
+
+	if (!addr)
+		goto out;
+
+	/* get the virtual address of the vbt */
+	vbt_virtual = ioremap(addr, sizeof(vbt_header));
+	if (!vbt_virtual)
+		goto out;
+
+	memcpy_fromio(&vbt_header, vbt_virtual, sizeof(vbt_header));
+	iounmap(vbt_virtual);
+
+	if (memcmp(&vbt_header.signature, "$GCT", 4))
+		goto out;
+
+	dev_dbg(dev->dev, "GCT revision is %02x\n", vbt_header.revision);
+
+	switch (vbt_header.revision) {
+	case 0x00:
+		ret = mid_get_vbt_data_r0(dev_priv, addr);
+		break;
+	case 0x01:
+		ret = mid_get_vbt_data_r1(dev_priv, addr);
+		break;
+	case 0x10:
+		ret = mid_get_vbt_data_r10(dev_priv, addr);
+		break;
+	default:
+		dev_err(dev->dev, "Unknown revision of GCT!\n");
+	}
+
+out:
+	if (ret)
+		dev_err(dev->dev, "Unable to read GCT!");
+	else
+		dev_priv->has_gct = true;
+}
+
+int mid_chip_setup(struct drm_device *dev)
+{
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	mid_get_fuse_settings(dev);
+	mid_get_vbt_data(dev_priv);
+	mid_get_pci_revID(dev_priv);
+	return 0;
+}