86 static u32 get_reserved(struct intel_gmbus *bus)  in get_reserved()  argument
88 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_reserved()
94 		reserved = I915_READ_NOTRACE(bus->gpio_reg) &  in get_reserved()
103 	struct intel_gmbus *bus = data;  in get_clock()  local
104 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_clock()
105 	u32 reserved = get_reserved(bus);  in get_clock()
106 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | GPIO_CLOCK_DIR_MASK);  in get_clock()
107 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved);  in get_clock()
108 	return (I915_READ_NOTRACE(bus->gpio_reg) & GPIO_CLOCK_VAL_IN) != 0;  in get_clock()
113 	struct intel_gmbus *bus = data;  in get_data()  local
114 	struct drm_i915_private *dev_priv = bus->dev_priv;  in get_data()
115 	u32 reserved = get_reserved(bus);  in get_data()
116 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | GPIO_DATA_DIR_MASK);  in get_data()
117 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved);  in get_data()
118 	return (I915_READ_NOTRACE(bus->gpio_reg) & GPIO_DATA_VAL_IN) != 0;  in get_data()
123 	struct intel_gmbus *bus = data;  in set_clock()  local
124 	struct drm_i915_private *dev_priv = bus->dev_priv;  in set_clock()
125 	u32 reserved = get_reserved(bus);  in set_clock()
134 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | clock_bits);  in set_clock()
135 	POSTING_READ(bus->gpio_reg);  in set_clock()
140 	struct intel_gmbus *bus = data;  in set_data()  local
141 	struct drm_i915_private *dev_priv = bus->dev_priv;  in set_data()
142 	u32 reserved = get_reserved(bus);  in set_data()
151 	I915_WRITE_NOTRACE(bus->gpio_reg, reserved | data_bits);  in set_data()
152 	POSTING_READ(bus->gpio_reg);  in set_data()
158 	struct intel_gmbus *bus = container_of(adapter,  in intel_gpio_pre_xfer()  local
161 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_pre_xfer()
165 	set_data(bus, 1);  in intel_gpio_pre_xfer()
166 	set_clock(bus, 1);  in intel_gpio_pre_xfer()
174 	struct intel_gmbus *bus = container_of(adapter,  in intel_gpio_post_xfer()  local
177 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_post_xfer()
179 	set_data(bus, 1);  in intel_gpio_post_xfer()
180 	set_clock(bus, 1);  in intel_gpio_post_xfer()
185 intel_gpio_setup(struct intel_gmbus *bus, u32 pin)  in intel_gpio_setup()  argument
187 	struct drm_i915_private *dev_priv = bus->dev_priv;  in intel_gpio_setup()
190 	algo = &bus->bit_algo;  in intel_gpio_setup()
193 	bus->gpio_reg = dev_priv->gpio_mmio_base + gmbus_ports[pin - 1].reg;  in intel_gpio_setup()
195 	bus->adapter.algo_data = algo;  in intel_gpio_setup()
204 	algo->data = bus;  in intel_gpio_setup()
434 	struct intel_gmbus *bus = container_of(adapter,  in gmbus_xfer()  local
437 	struct drm_i915_private *dev_priv = bus->dev_priv;  in gmbus_xfer()
444 	if (bus->force_bit) {  in gmbus_xfer()
452 	I915_WRITE(GMBUS0 + reg_offset, bus->reg0);  in gmbus_xfer()
546 		 bus->adapter.name, bus->reg0 & 0xff);  in gmbus_xfer()
550 	bus->force_bit = 1;  in gmbus_xfer()
595 		struct intel_gmbus *bus = &dev_priv->gmbus[i];  in intel_setup_gmbus()  local
598 		bus->adapter.owner = THIS_MODULE;  in intel_setup_gmbus()
599 		bus->adapter.class = I2C_CLASS_DDC;  in intel_setup_gmbus()
600 		snprintf(bus->adapter.name,  in intel_setup_gmbus()
601 			 sizeof(bus->adapter.name),  in intel_setup_gmbus()
605 		bus->adapter.dev.parent = &dev->pdev->dev;  in intel_setup_gmbus()
606 		bus->dev_priv = dev_priv;  in intel_setup_gmbus()
608 		bus->adapter.algo = &gmbus_algorithm;  in intel_setup_gmbus()
611 		bus->reg0 = port | GMBUS_RATE_100KHZ;  in intel_setup_gmbus()
615 			bus->force_bit = 1;  in intel_setup_gmbus()
617 		intel_gpio_setup(bus, port);  in intel_setup_gmbus()
619 		ret = i2c_add_adapter(&bus->adapter);  in intel_setup_gmbus()
630 		struct intel_gmbus *bus = &dev_priv->gmbus[i];  in intel_setup_gmbus()  local
631 		i2c_del_adapter(&bus->adapter);  in intel_setup_gmbus()
647 	struct intel_gmbus *bus = to_intel_gmbus(adapter);  in intel_gmbus_set_speed()  local
649 	bus->reg0 = (bus->reg0 & ~(0x3 << 8)) | speed;  in intel_gmbus_set_speed()
654 	struct intel_gmbus *bus = to_intel_gmbus(adapter);  in intel_gmbus_force_bit()  local
656 	bus->force_bit += force_bit ? 1 : -1;  in intel_gmbus_force_bit()
659 		      bus->force_bit);  in intel_gmbus_force_bit()
668 		struct intel_gmbus *bus = &dev_priv->gmbus[i];  in intel_teardown_gmbus()  local
669 		i2c_del_adapter(&bus->adapter);  in intel_teardown_gmbus()