diff options
Diffstat (limited to 'drivers/gpu/drm/i2c/adv7511.c')
| -rw-r--r-- | drivers/gpu/drm/i2c/adv7511.c | 48 |
1 files changed, 29 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c index 533d1e3d4a99..a02112ba1c3d 100644 --- a/drivers/gpu/drm/i2c/adv7511.c +++ b/drivers/gpu/drm/i2c/adv7511.c @@ -136,6 +136,7 @@ static bool adv7511_register_volatile(struct device *dev, unsigned int reg) case ADV7511_REG_BKSV(3): case ADV7511_REG_BKSV(4): case ADV7511_REG_DDC_STATUS: + case ADV7511_REG_EDID_READ_CTRL: case ADV7511_REG_BSTATUS(0): case ADV7511_REG_BSTATUS(1): case ADV7511_REG_CHIP_ID_HIGH: @@ -362,24 +363,31 @@ static void adv7511_power_on(struct adv7511 *adv7511) { adv7511->current_edid_segment = -1; - regmap_write(adv7511->regmap, ADV7511_REG_INT(0), - ADV7511_INT0_EDID_READY); - regmap_write(adv7511->regmap, ADV7511_REG_INT(1), - ADV7511_INT1_DDC_ERROR); regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, ADV7511_POWER_POWER_DOWN, 0); + if (adv7511->i2c_main->irq) { + /* + * Documentation says the INT_ENABLE registers are reset in + * POWER_DOWN mode. My 7511w preserved the bits, however. + * Still, let's be safe and stick to the documentation. + */ + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), + ADV7511_INT0_EDID_READY); + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR); + } /* - * Per spec it is allowed to pulse the HDP signal to indicate that the + * Per spec it is allowed to pulse the HPD signal to indicate that the * EDID information has changed. Some monitors do this when they wakeup - * from standby or are enabled. When the HDP goes low the adv7511 is + * from standby or are enabled. When the HPD goes low the adv7511 is * reset and the outputs are disabled which might cause the monitor to - * go to standby again. To avoid this we ignore the HDP pin for the + * go to standby again. To avoid this we ignore the HPD pin for the * first few seconds after enabling the output. */ regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, - ADV7511_REG_POWER2_HDP_SRC_MASK, - ADV7511_REG_POWER2_HDP_SRC_NONE); + ADV7511_REG_POWER2_HPD_SRC_MASK, + ADV7511_REG_POWER2_HPD_SRC_NONE); /* * Most of the registers are reset during power down or when HPD is low. @@ -413,9 +421,9 @@ static bool adv7511_hpd(struct adv7511 *adv7511) if (ret < 0) return false; - if (irq0 & ADV7511_INT0_HDP) { + if (irq0 & ADV7511_INT0_HPD) { regmap_write(adv7511->regmap, ADV7511_REG_INT(0), - ADV7511_INT0_HDP); + ADV7511_INT0_HPD); return true; } @@ -438,7 +446,7 @@ static int adv7511_irq_process(struct adv7511 *adv7511) regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0); regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1); - if (irq0 & ADV7511_INT0_HDP && adv7511->encoder) + if (irq0 & ADV7511_INT0_HPD && adv7511->encoder) drm_helper_hpd_irq_event(adv7511->encoder->dev); if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) { @@ -567,12 +575,14 @@ static int adv7511_get_modes(struct drm_encoder *encoder, /* Reading the EDID only works if the device is powered */ if (!adv7511->powered) { - regmap_write(adv7511->regmap, ADV7511_REG_INT(0), - ADV7511_INT0_EDID_READY); - regmap_write(adv7511->regmap, ADV7511_REG_INT(1), - ADV7511_INT1_DDC_ERROR); regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, ADV7511_POWER_POWER_DOWN, 0); + if (adv7511->i2c_main->irq) { + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), + ADV7511_INT0_EDID_READY); + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR); + } adv7511->current_edid_segment = -1; } @@ -638,10 +648,10 @@ adv7511_encoder_detect(struct drm_encoder *encoder, if (adv7511->status == connector_status_connected) status = connector_status_disconnected; } else { - /* Renable HDP sensing */ + /* Renable HPD sensing */ regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, - ADV7511_REG_POWER2_HDP_SRC_MASK, - ADV7511_REG_POWER2_HDP_SRC_BOTH); + ADV7511_REG_POWER2_HPD_SRC_MASK, + ADV7511_REG_POWER2_HPD_SRC_BOTH); } adv7511->status = status; |