drm/gma500/oaktrail_lvds_i2c.c

63 #define LPC_READ_REG(chan, r) inl((chan)->reg + (r))
64 #define LPC_WRITE_REG(chan, r, val) outl((val), (chan)->reg + (r))
68 	struct gma_i2c_chan *chan = data;
71 	val = LPC_READ_REG(chan, RGIO);
73 	LPC_WRITE_REG(chan, RGIO, val);
74 	LPC_READ_REG(chan, RGLVL);
75 	val = (LPC_READ_REG(chan, RGLVL) & GPIO_CLOCK) ? 1 : 0;
82 	struct gma_i2c_chan *chan = data;
85 	val = LPC_READ_REG(chan, RGIO);
87 	LPC_WRITE_REG(chan, RGIO, val);
88 	LPC_READ_REG(chan, RGLVL);
89 	val = (LPC_READ_REG(chan, RGLVL) & GPIO_DATA) ? 1 : 0;
96 	struct gma_i2c_chan *chan = data;
100 		val = LPC_READ_REG(chan, RGIO);
102 		LPC_WRITE_REG(chan, RGIO, val);
104 		val = LPC_READ_REG(chan, RGIO);
106 		LPC_WRITE_REG(chan, RGIO, val);
107 		val = LPC_READ_REG(chan, RGLVL);
109 		LPC_WRITE_REG(chan, RGLVL, val);
115 	struct gma_i2c_chan *chan = data;
119 		val = LPC_READ_REG(chan, RGIO);
121 		LPC_WRITE_REG(chan, RGIO, val);
123 		val = LPC_READ_REG(chan, RGIO);
125 		LPC_WRITE_REG(chan, RGIO, val);
126 		val = LPC_READ_REG(chan, RGLVL);
128 		LPC_WRITE_REG(chan, RGLVL, val);
135 	struct gma_i2c_chan *chan;
138 	chan = kzalloc(sizeof(struct gma_i2c_chan), GFP_KERNEL);
139 	if (!chan)
142 	chan->drm_dev = dev;
143 	chan->reg = dev_priv->lpc_gpio_base;
144 	strscpy(chan->base.name, "gma500 LPC",  sizeof(chan->base.name));
145 	chan->base.owner = THIS_MODULE;
146 	chan->base.algo_data = &chan->algo;
147 	chan->base.dev.parent = dev->dev;
148 	chan->algo.setsda = set_data;
149 	chan->algo.setscl = set_clock;
150 	chan->algo.getsda = get_data;
151 	chan->algo.getscl = get_clock;
152 	chan->algo.udelay = 100;
153 	chan->algo.timeout = usecs_to_jiffies(2200);
154 	chan->algo.data = chan;
156 	i2c_set_adapdata(&chan->base, chan);
158 	set_data(chan, 1);
159 	set_clock(chan, 1);
162 	ret = i2c_bit_add_bus(&chan->base);
164 		kfree(chan);
168 	return chan;