GPIO support for HTC Dream

Hi!

quoted

quoted

quoted

+#define DREAM_INT_TO_BANK(n) ((n - DREAM_INT_START) / DREAM_INT_BANK0_COUNT)
+#define DREAM_INT_TO_MASK(n) (1U << ((n - DREAM_INT_START) & 7))
+#define DREAM_BANK_TO_MASK_REG(bank) \
+	(bank ? DREAM_GPIO_INT_MASK1_REG : DREAM_GPIO_INT_MASK0_REG)
+#define DREAM_BANK_TO_STAT_REG(bank) \
+	(bank ? DREAM_GPIO_INT_STAT1_REG : DREAM_GPIO_INT_STAT0_REG)

Are these needed outside of the gpiolib code? If not, they should be
moved there. I also think they should have lower case names since they
act like a function, and make the code where they are used nicer to
read.

I guess these logically belong here.

No, macros are macros, that means upcase.

container_of, min, swap, etc are macros too. It is easier to read this
if they are lower case because they are typically used for initialising
variables, ie:

	int bank = dream_int_to_bank(irq);

Is easier (IMHO) to read than:
	
	int bank = DREAM_INT_TO_BANK(irq);

I disagree here. I could convert it to inline function, but I guess it
is okay as it is.

quoted

 static void __init dream_init(void)
 {
+	gpio_set_value(DREAM_GPIO_UI_LED_EN, 1);
+        mdelay(300);
+	gpio_set_value(DREAM_GPIO_UI_LED_EN, 0);
+        mdelay(300);
+        gpio_set_value(DREAM_GPIO_UI_LED_EN, 1);
+	mdelay(300);
+        gpio_set_value(DREAM_GPIO_UI_LED_EN, 0);
+	mdelay(300);
+        gpio_set_value(DREAM_GPIO_UI_LED_EN, 1);
+        mdelay(300);
+        gpio_set_value(DREAM_GPIO_UI_LED_EN, 0);
+        mdelay(300);
+	gpio_set_value(DREAM_GPIO_UI_LED_EN, 1);
+        mdelay(300);
+	gpio_set_value(DREAM_GPIO_UI_LED_EN, 0);
+        mdelay(300);
+

Indentation looks screwy here. Also, is this meant to blink the leds?
There is a 2.4 second hard delay here, which is horrible.

Yep, that was my debugging code, not meant for upstream. And yes, its
blinking.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html