72 static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *dev_priv,  in get_gmbus_pin()  argument
75 	if (IS_BROXTON(dev_priv))  in get_gmbus_pin()
77 	else if (IS_SKYLAKE(dev_priv))  in get_gmbus_pin()
79 	else if (IS_BROADWELL(dev_priv))  in get_gmbus_pin()
85 bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,  in intel_gmbus_is_valid_pin()  argument
90 	if (IS_BROXTON(dev_priv))  in intel_gmbus_is_valid_pin()
92 	else if (IS_SKYLAKE(dev_priv))  in intel_gmbus_is_valid_pin()
94 	else if (IS_BROADWELL(dev_priv))  in intel_gmbus_is_valid_pin()
99 	return pin < size && get_gmbus_pin(dev_priv, pin)->reg;  in intel_gmbus_is_valid_pin()
115 	struct drm_i915_private *dev_priv = dev->dev_private;  in intel_i2c_reset()  local
121 static void intel_i2c_quirk_set(struct drm_i915_private *dev_priv, bool enable)  in intel_i2c_quirk_set()  argument
126 	if (!IS_PINEVIEW(dev_priv->dev))  in intel_i2c_quirk_set()
139 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_reserved()  local
140 	struct drm_device *dev = dev_priv->dev;  in get_reserved()
155 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_clock()  local
165 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_data()  local
175 	struct drm_i915_private *dev_priv = bus->dev_priv;  in set_clock()  local
192 	struct drm_i915_private *dev_priv = bus->dev_priv;  in set_data()  local
212 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_pre_xfer()  local
214 	intel_i2c_reset(dev_priv->dev);  in intel_gpio_pre_xfer()
215 	intel_i2c_quirk_set(dev_priv, true);  in intel_gpio_pre_xfer()
228 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_post_xfer()  local
232 	intel_i2c_quirk_set(dev_priv, false);  in intel_gpio_post_xfer()
238 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_setup()  local
243 	bus->gpio_reg = dev_priv->gpio_mmio_base +  in intel_gpio_setup()
244 		get_gmbus_pin(dev_priv, pin)->reg;  in intel_gpio_setup()
259 gmbus_wait_hw_status(struct drm_i915_private *dev_priv,  in gmbus_wait_hw_status()  argument
267 	if (!HAS_GMBUS_IRQ(dev_priv->dev))  in gmbus_wait_hw_status()
276 		prepare_to_wait(&dev_priv->gmbus_wait_queue, &wait,  in gmbus_wait_hw_status()
285 	finish_wait(&dev_priv->gmbus_wait_queue, &wait);  in gmbus_wait_hw_status()
297 gmbus_wait_idle(struct drm_i915_private *dev_priv)  in gmbus_wait_idle()  argument
303 	if (!HAS_GMBUS_IRQ(dev_priv->dev))  in gmbus_wait_idle()
309 	ret = wait_event_timeout(dev_priv->gmbus_wait_queue, C,  in gmbus_wait_idle()
322 gmbus_xfer_read_chunk(struct drm_i915_private *dev_priv,  in gmbus_xfer_read_chunk()  argument
336 		ret = gmbus_wait_hw_status(dev_priv, GMBUS_HW_RDY,  in gmbus_xfer_read_chunk()
352 gmbus_xfer_read(struct drm_i915_private *dev_priv, struct i2c_msg *msg,  in gmbus_xfer_read()  argument
363 		ret = gmbus_xfer_read_chunk(dev_priv, msg->addr,  in gmbus_xfer_read()
376 gmbus_xfer_write_chunk(struct drm_i915_private *dev_priv,  in gmbus_xfer_write_chunk()  argument
404 		ret = gmbus_wait_hw_status(dev_priv, GMBUS_HW_RDY,  in gmbus_xfer_write_chunk()
414 gmbus_xfer_write(struct drm_i915_private *dev_priv, struct i2c_msg *msg)  in gmbus_xfer_write()  argument
424 		ret = gmbus_xfer_write_chunk(dev_priv, msg->addr, buf, len);  in gmbus_xfer_write()
448 gmbus_xfer_index_read(struct drm_i915_private *dev_priv, struct i2c_msg *msgs)  in gmbus_xfer_index_read()  argument
465 	ret = gmbus_xfer_read(dev_priv, &msgs[1], gmbus1_index);  in gmbus_xfer_index_read()
482 	struct drm_i915_private *dev_priv = bus->dev_priv;  in gmbus_xfer()  local
486 	intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);  in gmbus_xfer()
487 	mutex_lock(&dev_priv->gmbus_mutex);  in gmbus_xfer()
500 			ret = gmbus_xfer_index_read(dev_priv, &msgs[i]);  in gmbus_xfer()
503 			ret = gmbus_xfer_read(dev_priv, &msgs[i], 0);  in gmbus_xfer()
505 			ret = gmbus_xfer_write(dev_priv, &msgs[i]);  in gmbus_xfer()
513 		ret = gmbus_wait_hw_status(dev_priv, GMBUS_HW_WAIT_PHASE,  in gmbus_xfer()
531 	if (gmbus_wait_idle(dev_priv)) {  in gmbus_xfer()
555 	if (gmbus_wait_idle(dev_priv)) {  in gmbus_xfer()
597 	mutex_unlock(&dev_priv->gmbus_mutex);  in gmbus_xfer()
599 	intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS);  in gmbus_xfer()
624 	struct drm_i915_private *dev_priv = dev->dev_private;  in intel_setup_gmbus()  local
632 		dev_priv->gpio_mmio_base = PCH_GPIOA - GPIOA;  in intel_setup_gmbus()
634 		dev_priv->gpio_mmio_base = VLV_DISPLAY_BASE;  in intel_setup_gmbus()
636 		dev_priv->gpio_mmio_base = 0;  in intel_setup_gmbus()
638 	mutex_init(&dev_priv->gmbus_mutex);  in intel_setup_gmbus()
639 	init_waitqueue_head(&dev_priv->gmbus_wait_queue);  in intel_setup_gmbus()
641 	for (pin = 0; pin < ARRAY_SIZE(dev_priv->gmbus); pin++) {  in intel_setup_gmbus()
642 		if (!intel_gmbus_is_valid_pin(dev_priv, pin))  in intel_setup_gmbus()
645 		bus = &dev_priv->gmbus[pin];  in intel_setup_gmbus()
652 			 get_gmbus_pin(dev_priv, pin)->name);  in intel_setup_gmbus()
655 		bus->dev_priv = dev_priv;  in intel_setup_gmbus()
673 	intel_i2c_reset(dev_priv->dev);  in intel_setup_gmbus()
679 		if (!intel_gmbus_is_valid_pin(dev_priv, pin))  in intel_setup_gmbus()
682 		bus = &dev_priv->gmbus[pin];  in intel_setup_gmbus()
688 struct i2c_adapter *intel_gmbus_get_adapter(struct drm_i915_private *dev_priv,  in intel_gmbus_get_adapter()  argument
691 	if (WARN_ON(!intel_gmbus_is_valid_pin(dev_priv, pin)))  in intel_gmbus_get_adapter()
694 	return &dev_priv->gmbus[pin].adapter;  in intel_gmbus_get_adapter()
716 	struct drm_i915_private *dev_priv = dev->dev_private;  in intel_teardown_gmbus()  local
720 	for (pin = 0; pin < ARRAY_SIZE(dev_priv->gmbus); pin++) {  in intel_teardown_gmbus()
721 		if (!intel_gmbus_is_valid_pin(dev_priv, pin))  in intel_teardown_gmbus()
724 		bus = &dev_priv->gmbus[pin];  in intel_teardown_gmbus()