137 static u32 get_reserved(struct intel_gmbus *bus)  in get_reserved()  argument
139 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_reserved()
145 		reserved = I915_READ_NOTRACE(bus->gpio_reg) &  in get_reserved()
154 	struct intel_gmbus *bus = data;  in get_clock()  local
155 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_clock()
156 	u32 reserved = get_reserved(bus);  in get_clock()
157 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | GPIO_CLOCK_DIR_MASK);  in get_clock()
158 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved);  in get_clock()
159 	return (I915_READ_NOTRACE(bus->gpio_reg) & GPIO_CLOCK_VAL_IN) != 0;  in get_clock()
164 	struct intel_gmbus *bus = data;  in get_data()  local
165 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_data()
166 	u32 reserved = get_reserved(bus);  in get_data()
167 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | GPIO_DATA_DIR_MASK);  in get_data()
168 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved);  in get_data()
169 	return (I915_READ_NOTRACE(bus->gpio_reg) & GPIO_DATA_VAL_IN) != 0;  in get_data()
174 	struct intel_gmbus *bus = data;  in set_clock()  local
175 	struct drm_i915_private *dev_priv = bus->dev_priv;  in set_clock()
176 	u32 reserved = get_reserved(bus);  in set_clock()
185 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | clock_bits);  in set_clock()
186 	POSTING_READ(bus->gpio_reg);  in set_clock()
191 	struct intel_gmbus *bus = data;  in set_data()  local
192 	struct drm_i915_private *dev_priv = bus->dev_priv;  in set_data()
193 	u32 reserved = get_reserved(bus);  in set_data()
202 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | data_bits);  in set_data()
203 	POSTING_READ(bus->gpio_reg);  in set_data()
209 	struct intel_gmbus *bus = container_of(adapter,  in intel_gpio_pre_xfer()  local
212 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_pre_xfer()
216 	set_data(bus, 1);  in intel_gpio_pre_xfer()
217 	set_clock(bus, 1);  in intel_gpio_pre_xfer()
225 	struct intel_gmbus *bus = container_of(adapter,  in intel_gpio_post_xfer()  local
228 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_post_xfer()
230 	set_data(bus, 1);  in intel_gpio_post_xfer()
231 	set_clock(bus, 1);  in intel_gpio_post_xfer()
236 intel_gpio_setup(struct intel_gmbus *bus, unsigned int pin)  in intel_gpio_setup()  argument
238 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_setup()
241 	algo = &bus->bit_algo;  in intel_gpio_setup()
243 	bus->gpio_reg = dev_priv->gpio_mmio_base +  in intel_gpio_setup()
246 	bus->adapter.algo_data = algo;  in intel_gpio_setup()
255 	algo->data = bus;  in intel_gpio_setup()
479 	struct intel_gmbus *bus = container_of(adapter,  in gmbus_xfer()  local
482 	struct drm_i915_private *dev_priv = bus->dev_priv;  in gmbus_xfer()
489 	if (bus->force_bit) {  in gmbus_xfer()
495 	I915_WRITE(GMBUS0, bus->reg0);  in gmbus_xfer()
589 		 bus->adapter.name, bus->reg0 & 0xff);  in gmbus_xfer()
593 	bus->force_bit = 1;  in gmbus_xfer()
625 	struct intel_gmbus *bus;  in intel_setup_gmbus()  local
645 		bus = &dev_priv->gmbus[pin];  in intel_setup_gmbus()
647 		bus->adapter.owner = THIS_MODULE;  in intel_setup_gmbus()
648 		bus->adapter.class = I2C_CLASS_DDC;  in intel_setup_gmbus()
649 		snprintf(bus->adapter.name,  in intel_setup_gmbus()
650 			 sizeof(bus->adapter.name),  in intel_setup_gmbus()
654 		bus->adapter.dev.parent = &dev->pdev->dev;  in intel_setup_gmbus()
655 		bus->dev_priv = dev_priv;  in intel_setup_gmbus()
657 		bus->adapter.algo = &gmbus_algorithm;  in intel_setup_gmbus()
660 		bus->reg0 = pin | GMBUS_RATE_100KHZ;  in intel_setup_gmbus()
664 			bus->force_bit = 1;  in intel_setup_gmbus()
666 		intel_gpio_setup(bus, pin);  in intel_setup_gmbus()
668 		ret = i2c_add_adapter(&bus->adapter);  in intel_setup_gmbus()
682 		bus = &dev_priv->gmbus[pin];  in intel_setup_gmbus()
683 		i2c_del_adapter(&bus->adapter);  in intel_setup_gmbus()
699 	struct intel_gmbus *bus = to_intel_gmbus(adapter);  in intel_gmbus_set_speed()  local
701 	bus->reg0 = (bus->reg0 & ~(0x3 << 8)) | speed;  in intel_gmbus_set_speed()
706 	struct intel_gmbus *bus = to_intel_gmbus(adapter);  in intel_gmbus_force_bit()  local
708 	bus->force_bit += force_bit ? 1 : -1;  in intel_gmbus_force_bit()
711 		      bus->force_bit);  in intel_gmbus_force_bit()
717 	struct intel_gmbus *bus;  in intel_teardown_gmbus()  local
724 		bus = &dev_priv->gmbus[pin];  in intel_teardown_gmbus()
725 		i2c_del_adapter(&bus->adapter);  in intel_teardown_gmbus()