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authorbraggle@free.fr <braggle@free.fr>2013-05-16 12:57:38 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2013-05-20 22:02:49 +0200
commit98304ad186296dc1e655399e28d5973c21db6a73 (patch)
treef32bdcbd5a5d2362b7c987880c448664ac5caa79
parent328d8e829b9a05814af4722c1091d62c5533c4f8 (diff)
drm/i915: add support for dvo Chrontel 7010B
This patch add dvo detection for the Chrontel 7010B on some old hardware. References: https://bugzilla.kernel.org/show_bug.cgi?id=55101 Signed-off-by: Braggle <braggle at free.fr> [danvet: Fix up whitespace mangling.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
-rw-r--r--drivers/gpu/drm/i915/dvo_ch7xxx.c28
-rw-r--r--drivers/gpu/drm/i915/intel_dvo.c7
2 files changed, 33 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/dvo_ch7xxx.c b/drivers/gpu/drm/i915/dvo_ch7xxx.c
index 3edd981e077..757e0fa1104 100644
--- a/drivers/gpu/drm/i915/dvo_ch7xxx.c
+++ b/drivers/gpu/drm/i915/dvo_ch7xxx.c
@@ -32,12 +32,14 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#define CH7xxx_REG_DID 0x4b
#define CH7011_VID 0x83 /* 7010 as well */
+#define CH7010B_VID 0x05
#define CH7009A_VID 0x84
#define CH7009B_VID 0x85
#define CH7301_VID 0x95
#define CH7xxx_VID 0x84
#define CH7xxx_DID 0x17
+#define CH7010_DID 0x16
#define CH7xxx_NUM_REGS 0x4c
@@ -87,11 +89,20 @@ static struct ch7xxx_id_struct {
char *name;
} ch7xxx_ids[] = {
{ CH7011_VID, "CH7011" },
+ { CH7010B_VID, "CH7010B" },
{ CH7009A_VID, "CH7009A" },
{ CH7009B_VID, "CH7009B" },
{ CH7301_VID, "CH7301" },
};
+static struct ch7xxx_did_struct {
+ uint8_t did;
+ char *name;
+} ch7xxx_dids[] = {
+ { CH7xxx_DID, "CH7XXX" },
+ { CH7010_DID, "CH7010B" },
+};
+
struct ch7xxx_priv {
bool quiet;
};
@@ -108,6 +119,18 @@ static char *ch7xxx_get_id(uint8_t vid)
return NULL;
}
+static char *ch7xxx_get_did(uint8_t did)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ch7xxx_dids); i++) {
+ if (ch7xxx_dids[i].did == did)
+ return ch7xxx_dids[i].name;
+ }
+
+ return NULL;
+}
+
/** Reads an 8 bit register */
static bool ch7xxx_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch)
{
@@ -179,7 +202,7 @@ static bool ch7xxx_init(struct intel_dvo_device *dvo,
/* this will detect the CH7xxx chip on the specified i2c bus */
struct ch7xxx_priv *ch7xxx;
uint8_t vendor, device;
- char *name;
+ char *name, *devid;
ch7xxx = kzalloc(sizeof(struct ch7xxx_priv), GFP_KERNEL);
if (ch7xxx == NULL)
@@ -204,7 +227,8 @@ static bool ch7xxx_init(struct intel_dvo_device *dvo,
if (!ch7xxx_readb(dvo, CH7xxx_REG_DID, &device))
goto out;
- if (device != CH7xxx_DID) {
+ devid = ch7xxx_get_did(device);
+ if (!devid) {
DRM_DEBUG_KMS("ch7xxx not detected; got 0x%02x from %s "
"slave %d.\n",
vendor, adapter->name, dvo->slave_addr);
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index 00e70dbe82d..ee328ce8e9f 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -54,6 +54,13 @@ static const struct intel_dvo_device intel_dvo_devices[] = {
.dev_ops = &ch7xxx_ops,
},
{
+ .type = INTEL_DVO_CHIP_TMDS,
+ .name = "ch7xxx",
+ .dvo_reg = DVOC,
+ .slave_addr = 0x75, /* For some ch7010 */
+ .dev_ops = &ch7xxx_ops,
+ },
+ {
.type = INTEL_DVO_CHIP_LVDS,
.name = "ivch",
.dvo_reg = DVOA,