Add a per-model device-function structure in preparation of adding
color-management support. Detection of the individual models has been
taken from fbdev's offb.
v3:
* define constants for PCI ids (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
---
drivers/gpu/drm/tiny/ofdrm.c | 125 +++++++++++++++++++++++++++++++++++
1 file changed, 125 insertions(+)
diff --git a/drivers/gpu/drm/tiny/ofdrm.c b/drivers/gpu/drm/tiny/ofdrm.c
index 6782589ff9fa..a0282a077238 100644
--- a/drivers/gpu/drm/tiny/ofdrm.c
+++ b/drivers/gpu/drm/tiny/ofdrm.c
@@ -28,6 +28,21 @@
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
+#define PCI_VENDOR_ID_ATI_R520 0x7100
+#define PCI_VENDOR_ID_ATI_R600 0x9400
+
+enum ofdrm_model {
+ OFDRM_MODEL_UNKNOWN,
+ OFDRM_MODEL_MACH64, /* ATI Mach64 */
+ OFDRM_MODEL_RAGE128, /* ATI Rage128 */
+ OFDRM_MODEL_RAGE_M3A, /* ATI Rage Mobility M3 Head A */
+ OFDRM_MODEL_RAGE_M3B, /* ATI Rage Mobility M3 Head B */
+ OFDRM_MODEL_RADEON, /* ATI Radeon */
+ OFDRM_MODEL_GXT2000, /* IBM GXT2000 */
+ OFDRM_MODEL_AVIVO, /* ATI R5xx */
+ OFDRM_MODEL_QEMU, /* QEMU VGA */
+};
+
/*
* Helpers for display nodes
*/
@@ -148,14 +163,63 @@ static u64 display_get_address_of(struct drm_device *dev, struct device_node *of
return address;
}
+static bool is_avivo(__be32 vendor, __be32 device)
+{
+ /* This will match most R5xx */
+ return (vendor == PCI_VENDOR_ID_ATI) &&
+ ((device >= PCI_VENDOR_ID_ATI_R520 && device < 0x7800) ||
+ (PCI_VENDOR_ID_ATI_R600 >= 0x9400));
+}
+
+static enum ofdrm_model display_get_model_of(struct drm_device *dev, struct device_node *of_node)
+{
+ enum ofdrm_model model = OFDRM_MODEL_UNKNOWN;
+
+ if (of_node_name_prefix(of_node, "ATY,Rage128")) {
+ model = OFDRM_MODEL_RAGE128;
+ } else if (of_node_name_prefix(of_node, "ATY,RageM3pA") ||
+ of_node_name_prefix(of_node, "ATY,RageM3p12A")) {
+ model = OFDRM_MODEL_RAGE_M3A;
+ } else if (of_node_name_prefix(of_node, "ATY,RageM3pB")) {
+ model = OFDRM_MODEL_RAGE_M3B;
+ } else if (of_node_name_prefix(of_node, "ATY,Rage6")) {
+ model = OFDRM_MODEL_RADEON;
+ } else if (of_node_name_prefix(of_node, "ATY,")) {
+ return OFDRM_MODEL_MACH64;
+ } else if (of_device_is_compatible(of_node, "pci1014,b7") ||
+ of_device_is_compatible(of_node, "pci1014,21c")) {
+ model = OFDRM_MODEL_GXT2000;
+ } else if (of_node_name_prefix(of_node, "vga,Display-")) {
+ struct device_node *of_parent;
+ const __be32 *vendor_p, *device_p;
+
+ /* Look for AVIVO initialized by SLOF */
+ of_parent = of_get_parent(of_node);
+ vendor_p = of_get_property(of_parent, "vendor-id", NULL);
+ device_p = of_get_property(of_parent, "device-id", NULL);
+ if (vendor_p && device_p && is_avivo(*vendor_p, *device_p))
+ model = OFDRM_MODEL_AVIVO;
+ of_node_put(of_parent);
+ } else if (of_device_is_compatible(of_node, "qemu,std-vga")) {
+ model = OFDRM_MODEL_QEMU;
+ }
+
+ return model;
+}
+
/*
* Open Firmware display device
*/
+struct ofdrm_device_funcs {
+};
+
struct ofdrm_device {
struct drm_device dev;
struct platform_device *pdev;
+ const struct ofdrm_device_funcs *funcs;
+
/* firmware-buffer settings */
struct iosys_map screen_base;
struct drm_display_mode mode;
@@ -522,6 +586,33 @@ static const struct drm_mode_config_funcs ofdrm_mode_config_funcs = {
* Init / Cleanup
*/
+static const struct ofdrm_device_funcs ofdrm_unknown_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_mach64_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_rage128_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_rage_m3a_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_rage_m3b_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_radeon_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_gxt2000_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_avivo_device_funcs = {
+};
+
+static const struct ofdrm_device_funcs ofdrm_qemu_device_funcs = {
+};
+
static struct drm_display_mode ofdrm_mode(unsigned int width, unsigned int height)
{
/*
@@ -543,6 +634,7 @@ static struct ofdrm_device *ofdrm_device_create(struct drm_driver *drv,
struct device_node *of_node = pdev->dev.of_node;
struct ofdrm_device *odev;
struct drm_device *dev;
+ enum ofdrm_model model;
int width, height, depth, linebytes;
const struct drm_format_info *format;
u64 address;
@@ -571,6 +663,39 @@ static struct ofdrm_device *ofdrm_device_create(struct drm_driver *drv,
* OF display-node settings
*/
+ model = display_get_model_of(dev, of_node);
+ drm_dbg(dev, "detected model %d\n", model);
+
+ switch (model) {
+ case OFDRM_MODEL_UNKNOWN:
+ odev->funcs = &ofdrm_unknown_device_funcs;
+ break;
+ case OFDRM_MODEL_MACH64:
+ odev->funcs = &ofdrm_mach64_device_funcs;
+ break;
+ case OFDRM_MODEL_RAGE128:
+ odev->funcs = &ofdrm_rage128_device_funcs;
+ break;
+ case OFDRM_MODEL_RAGE_M3A:
+ odev->funcs = &ofdrm_rage_m3a_device_funcs;
+ break;
+ case OFDRM_MODEL_RAGE_M3B:
+ odev->funcs = &ofdrm_rage_m3b_device_funcs;
+ break;
+ case OFDRM_MODEL_RADEON:
+ odev->funcs = &ofdrm_radeon_device_funcs;
+ break;
+ case OFDRM_MODEL_GXT2000:
+ odev->funcs = &ofdrm_gxt2000_device_funcs;
+ break;
+ case OFDRM_MODEL_AVIVO:
+ odev->funcs = &ofdrm_avivo_device_funcs;
+ break;
+ case OFDRM_MODEL_QEMU:
+ odev->funcs = &ofdrm_qemu_device_funcs;
+ break;
+ }
+
width = display_get_width_of(dev, of_node);
if (width < 0)
return ERR_PTR(width);
--
2.37.3
