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path: root/drivers/gpu/drm/nouveau/nv04_dfp.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv04_dfp.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv04_dfp.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv04_dfp.c b/drivers/gpu/drm/nouveau/nv04_dfp.c
index 3311f3a8c818..a5dcf7685800 100644
--- a/drivers/gpu/drm/nouveau/nv04_dfp.c
+++ b/drivers/gpu/drm/nouveau/nv04_dfp.c
@@ -34,6 +34,8 @@
#include "nouveau_hw.h"
#include "nvreg.h"
+#include "i2c/sil164.h"
+
#define FP_TG_CONTROL_ON (NV_PRAMDAC_FP_TG_CONTROL_DISPEN_POS | \
NV_PRAMDAC_FP_TG_CONTROL_HSYNC_POS | \
NV_PRAMDAC_FP_TG_CONTROL_VSYNC_POS)
@@ -144,6 +146,36 @@ void nv04_dfp_update_fp_control(struct drm_encoder *encoder, int mode)
}
}
+static struct drm_encoder *get_tmds_slave(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct dcb_entry *dcb = nouveau_encoder(encoder)->dcb;
+ struct drm_encoder *slave;
+
+ if (dcb->type != OUTPUT_TMDS || dcb->location == DCB_LOC_ON_CHIP)
+ return NULL;
+
+ /* Some BIOSes (e.g. the one in a Quadro FX1000) report several
+ * TMDS transmitters at the same I2C address, in the same I2C
+ * bus. This can still work because in that case one of them is
+ * always hard-wired to a reasonable configuration using straps,
+ * and the other one needs to be programmed.
+ *
+ * I don't think there's a way to know which is which, even the
+ * blob programs the one exposed via I2C for *both* heads, so
+ * let's do the same.
+ */
+ list_for_each_entry(slave, &dev->mode_config.encoder_list, head) {
+ struct dcb_entry *slave_dcb = nouveau_encoder(slave)->dcb;
+
+ if (slave_dcb->type == OUTPUT_TMDS && get_slave_funcs(slave) &&
+ slave_dcb->tmdsconf.slave_addr == dcb->tmdsconf.slave_addr)
+ return slave;
+ }
+
+ return NULL;
+}
+
static bool nv04_dfp_mode_fixup(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
@@ -429,6 +461,11 @@ static void nv04_dfp_commit(struct drm_encoder *encoder)
else
NVWriteRAMDAC(dev, 0, NV_PRAMDAC_TEST_CONTROL + nv04_dac_output_offset(encoder), 0x00100000);
+ /* Init external transmitters */
+ if (get_tmds_slave(encoder))
+ get_slave_funcs(get_tmds_slave(encoder))->mode_set(
+ encoder, &nv_encoder->mode, &nv_encoder->mode);
+
helper->dpms(encoder, DRM_MODE_DPMS_ON);
NV_INFO(dev, "Output %s is running on CRTC %d using output %c\n",
@@ -550,10 +587,42 @@ static void nv04_dfp_destroy(struct drm_encoder *encoder)
NV_DEBUG_KMS(encoder->dev, "\n");
+ if (get_slave_funcs(encoder))
+ get_slave_funcs(encoder)->destroy(encoder);
+
drm_encoder_cleanup(encoder);
kfree(nv_encoder);
}
+static void nv04_tmds_slave_init(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct dcb_entry *dcb = nouveau_encoder(encoder)->dcb;
+ struct nouveau_i2c_chan *i2c = nouveau_i2c_find(dev, 2);
+ struct i2c_board_info info[] = {
+ {
+ .type = "sil164",
+ .addr = (dcb->tmdsconf.slave_addr == 0x7 ? 0x3a : 0x38),
+ .platform_data = &(struct sil164_encoder_params) {
+ SIL164_INPUT_EDGE_RISING
+ }
+ },
+ { }
+ };
+ int type;
+
+ if (!nv_gf4_disp_arch(dev) || !i2c ||
+ get_tmds_slave(encoder))
+ return;
+
+ type = nouveau_i2c_identify(dev, "TMDS transmitter", info, 2);
+ if (type < 0)
+ return;
+
+ drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
+ &i2c->adapter, &info[type]);
+}
+
static const struct drm_encoder_helper_funcs nv04_lvds_helper_funcs = {
.dpms = nv04_lvds_dpms,
.save = nv04_dfp_save,
@@ -616,6 +685,10 @@ nv04_dfp_create(struct drm_connector *connector, struct dcb_entry *entry)
encoder->possible_crtcs = entry->heads;
encoder->possible_clones = 0;
+ if (entry->type == OUTPUT_TMDS &&
+ entry->location != DCB_LOC_ON_CHIP)
+ nv04_tmds_slave_init(encoder);
+
drm_mode_connector_attach_encoder(connector, encoder);
return 0;
}