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Patch #3060 from Andrew Scott - iPod mini button driver

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8857 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman 2006-02-27 12:35:05 +00:00
parent 0bdf0c6342
commit 285079138b
5 changed files with 113 additions and 3 deletions
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89
firmware/drivers/button.c
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@ -87,7 +87,9 @@ static bool remote_button_hold_only(void);
#if CONFIG_KEYPAD == IPOD_4G_PAD
/* Variable to use for setting button status in interrupt handler */
int int_btn = BUTTON_NONE;
#endif
#if (CONFIG_KEYPAD == IPOD_4G_PAD) && (!defined(APPLE_IPODMINI))
static void opto_i2c_init(void)
{
int i, curr_value;
@ -240,7 +242,7 @@ void ipod_4g_button_int(void)
CPU_HI_INT_EN = I2C_MASK;
}
#endif
#if CONFIG_KEYPAD == IPOD_3G_PAD
#if (CONFIG_KEYPAD == IPOD_3G_PAD) || (defined(APPLE_IPODMINI))
/**
*
*
@ -291,7 +293,68 @@ void handle_scroll_wheel(int new_scroll, int was_hold, int reverse)
queue_post(&button_queue, wheel_keycode, NULL);
prev_scroll = new_scroll;
}
#endif
#if (CONFIG_KEYPAD == IPOD_4G_PAD) && (defined(APPLE_IPODMINI))
static int ipod_mini_button_read(void)
{
unsigned char source, wheel_source, state, wheel_state;
int btn = BUTTON_NONE;
/*
* we need some delay for mini, cause hold generates several interrupts,
* some of them delayed
*/
udelay(250);
/* get source(s) of interupt */
source = GPIOA_INT_STAT & 0x3f;
wheel_source = GPIOB_INT_STAT & 0x30;
if (source == 0 && wheel_source == 0) {
return BUTTON_NONE; /* not for us */
}
/* get current keypad & wheel status */
state = GPIOA_INPUT_VAL & 0x3f;
wheel_state = GPIOB_INPUT_VAL & 0x30;
/* toggle interrupt level */
GPIOA_INT_LEV = ~state;
GPIOB_INT_LEV = ~wheel_state;
if (source & 0x1)
btn |= BUTTON_SELECT;
if (source & 0x2)
btn |= BUTTON_MENU;
if (source & 0x4)
btn |= BUTTON_PLAY;
if (source & 0x8)
btn |= BUTTON_RIGHT;
if (source & 0x10)
btn |= BUTTON_LEFT;
if (wheel_source & 0x30) {
handle_scroll_wheel((wheel_state & 0x30) >> 4, 0, 1);
}
/* ack any active interrupts */
if (source)
GPIOA_INT_CLR = source;
if (wheel_source)
GPIOB_INT_CLR = wheel_source;
return btn;
}
void ipod_mini_button_int(void)
{
CPU_HI_INT_CLR = GPIO_MASK;
int_btn = ipod_mini_button_read();
//CPU_INT_EN = 0x40000000;
CPU_HI_INT_EN = GPIO_MASK;
}
#endif
#if CONFIG_KEYPAD == IPOD_3G_PAD
static int ipod_3g_button_read(void)
{
unsigned char source, state;
@ -541,7 +604,7 @@ void button_init(void)
/* nothing to initialize here */
#elif CONFIG_KEYPAD == GMINI100_PAD
/* nothing to initialize here */
#elif CONFIG_KEYPAD == IPOD_4G_PAD
#elif (CONFIG_KEYPAD == IPOD_4G_PAD) && (!defined(APPLE_IPODMINI))
opto_i2c_init();
/* hold button - enable as input */
GPIOA_ENABLE |= 0x20;
@ -551,9 +614,31 @@ void button_init(void)
GPIOA_INT_CLR = GPIOA_INT_STAT & 0x20;
/* enable interrupts */
GPIOA_INT_EN = 0x20;
/* unmask interrupt */
CPU_INT_EN = 0x40000000;
CPU_HI_INT_EN = I2C_MASK;
#elif (CONFIG_KEYPAD == IPOD_4G_PAD) && (defined(APPLE_IPODMINI))
/* iPod Mini G1 */
/* buttons - enable as input */
GPIOA_ENABLE |= 0x3f;
GPIOA_OUTPUT_EN &= ~0x3f;
/* scroll wheel- enable as input */
GPIOB_ENABLE |= 0x30; /* port b 4,5 */
GPIOB_OUTPUT_EN &= ~0x30; /* port b 4,5 */
/* buttons - set interrupt levels */
GPIOA_INT_LEV = ~(GPIOA_INPUT_VAL & 0x3f);
GPIOA_INT_CLR = GPIOA_INT_STAT & 0x3f;
/* scroll wheel - set interrupt levels */
GPIOB_INT_LEV = ~(GPIOB_INPUT_VAL & 0x3f);
GPIOB_INT_CLR = GPIOB_INT_STAT & 0x3f;
/* enable interrupts */
GPIOA_INT_EN = 0x3f;
GPIOB_INT_EN = 0x30;
/* unmask interrupt */
CPU_INT_EN = 0x40000000;
CPU_HI_INT_EN = GPIO_MASK;
#elif CONFIG_KEYPAD == IPOD_3G_PAD
GPIOA_INT_LEV = ~GPIOA_INPUT_VAL;
GPIOA_INT_CLR = GPIOA_INT_STAT;