* Eric Anholt <eric@anholt.net>
*/
#include <linux/i2c.h>
+#include <linux/slab.h>
#include <linux/delay.h>
#include "drmP.h"
#include "drm.h"
#include "i915_drm.h"
#include "i915_drv.h"
#include "intel_sdvo_regs.h"
+#include <linux/dmi.h>
static char *tv_format_names[] = {
"NTSC_M" , "NTSC_J" , "NTSC_443",
}
/**
- * Don't check status code from this as it switches the bus back to the
- * SDVO chips which defeats the purpose of doing a bus switch in the first
- * place.
+ * Try to read the response after issuie the DDC switch command. But it
+ * is noted that we must do the action of reading response and issuing DDC
+ * switch command in one I2C transaction. Otherwise when we try to start
+ * another I2C transaction after issuing the DDC bus switch, it will be
+ * switched to the internal SDVO register.
*/
static void intel_sdvo_set_control_bus_switch(struct intel_output *intel_output,
u8 target)
{
- intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_CONTROL_BUS_SWITCH, &target, 1);
+ struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
+ u8 out_buf[2], cmd_buf[2], ret_value[2], ret;
+ struct i2c_msg msgs[] = {
+ {
+ .addr = sdvo_priv->slave_addr >> 1,
+ .flags = 0,
+ .len = 2,
+ .buf = out_buf,
+ },
+ /* the following two are to read the response */
+ {
+ .addr = sdvo_priv->slave_addr >> 1,
+ .flags = 0,
+ .len = 1,
+ .buf = cmd_buf,
+ },
+ {
+ .addr = sdvo_priv->slave_addr >> 1,
+ .flags = I2C_M_RD,
+ .len = 1,
+ .buf = ret_value,
+ },
+ };
+
+ intel_sdvo_debug_write(intel_output, SDVO_CMD_SET_CONTROL_BUS_SWITCH,
+ &target, 1);
+ /* write the DDC switch command argument */
+ intel_sdvo_write_byte(intel_output, SDVO_I2C_ARG_0, target);
+
+ out_buf[0] = SDVO_I2C_OPCODE;
+ out_buf[1] = SDVO_CMD_SET_CONTROL_BUS_SWITCH;
+ cmd_buf[0] = SDVO_I2C_CMD_STATUS;
+ cmd_buf[1] = 0;
+ ret_value[0] = 0;
+ ret_value[1] = 0;
+
+ ret = i2c_transfer(intel_output->i2c_bus, msgs, 3);
+ if (ret != 3) {
+ /* failure in I2C transfer */
+ DRM_DEBUG_KMS("I2c transfer returned %d\n", ret);
+ return;
+ }
+ if (ret_value[0] != SDVO_CMD_STATUS_SUCCESS) {
+ DRM_DEBUG_KMS("DDC switch command returns response %d\n",
+ ret_value[0]);
+ return;
+ }
+ return;
}
static bool intel_sdvo_set_target_input(struct intel_output *intel_output, bool target_0, bool target_1)
edid = drm_get_edid(&intel_output->base,
intel_output->ddc_bus);
+ /* This is only applied to SDVO cards with multiple outputs */
+ if (edid == NULL && intel_sdvo_multifunc_encoder(intel_output)) {
+ uint8_t saved_ddc, temp_ddc;
+ saved_ddc = sdvo_priv->ddc_bus;
+ temp_ddc = sdvo_priv->ddc_bus >> 1;
+ /*
+ * Don't use the 1 as the argument of DDC bus switch to get
+ * the EDID. It is used for SDVO SPD ROM.
+ */
+ while(temp_ddc > 1) {
+ sdvo_priv->ddc_bus = temp_ddc;
+ edid = drm_get_edid(&intel_output->base,
+ intel_output->ddc_bus);
+ if (edid) {
+ /*
+ * When we can get the EDID, maybe it is the
+ * correct DDC bus. Update it.
+ */
+ sdvo_priv->ddc_bus = temp_ddc;
+ break;
+ }
+ temp_ddc >>= 1;
+ }
+ if (edid == NULL)
+ sdvo_priv->ddc_bus = saved_ddc;
+ }
/* when there is no edid and no monitor is connected with VGA
* port, try to use the CRT ddc to read the EDID for DVI-connector
*/
return 0x72;
}
+static int intel_sdvo_bad_tv_callback(const struct dmi_system_id *id)
+{
+ DRM_DEBUG_KMS("Ignoring bad SDVO TV connector for %s\n", id->ident);
+ return 1;
+}
+
+static struct dmi_system_id intel_sdvo_bad_tv[] = {
+ {
+ .callback = intel_sdvo_bad_tv_callback,
+ .ident = "IntelG45/ICH10R/DME1737",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "IBM CORPORATION"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "4800784"),
+ },
+ },
+
+ { } /* terminating entry */
+};
+
static bool
intel_sdvo_output_setup(struct intel_output *intel_output, uint16_t flags)
{
(1 << INTEL_SDVO_NON_TV_CLONE_BIT) |
(1 << INTEL_ANALOG_CLONE_BIT);
}
- } else if (flags & SDVO_OUTPUT_SVID0) {
+ } else if ((flags & SDVO_OUTPUT_SVID0) &&
+ !dmi_check_system(intel_sdvo_bad_tv)) {
sdvo_priv->controlled_output = SDVO_OUTPUT_SVID0;
encoder->encoder_type = DRM_MODE_ENCODER_TVDAC;
connector->connector_type = DRM_MODE_CONNECTOR_VGA;
intel_output->clone_mask = (1 << INTEL_SDVO_NON_TV_CLONE_BIT) |
(1 << INTEL_ANALOG_CLONE_BIT);
+ } else if (flags & SDVO_OUTPUT_CVBS0) {
+
+ sdvo_priv->controlled_output = SDVO_OUTPUT_CVBS0;
+ encoder->encoder_type = DRM_MODE_ENCODER_TVDAC;
+ connector->connector_type = DRM_MODE_CONNECTOR_SVIDEO;
+ sdvo_priv->is_tv = true;
+ intel_output->needs_tv_clock = true;
+ intel_output->clone_mask = 1 << INTEL_SDVO_TV_CLONE_BIT;
} else if (flags & SDVO_OUTPUT_LVDS0) {
sdvo_priv->controlled_output = SDVO_OUTPUT_LVDS0;
projects / mv-sheeva.git / blobdiff