summaryrefslogtreecommitdiffstats
path: root/drivers/mfd
diff options
context:
space:
mode:
authorMattias Wallin <mattias.wallin@stericsson.com>2010-12-07 11:20:47 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2011-01-14 12:38:18 +0100
commit92d50a4132977b932ed830fa58c05deeb5c524f0 (patch)
tree1ee4ca4b6126861e30d5ac79ad61b0884b4d8627 /drivers/mfd
parent180e4f5f20ef2b03ce2b38634274dde5ccbd8951 (diff)
downloadop-kernel-dev-92d50a4132977b932ed830fa58c05deeb5c524f0.zip
op-kernel-dev-92d50a4132977b932ed830fa58c05deeb5c524f0.tar.gz
mfd: ab8500-core chip version cut 2.0 support
This patch adds support for chip version 2.0 or cut 2.0. One new interrupt latch register - latch 12 - is introduced. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/ab8500-core.c36
1 files changed, 25 insertions, 11 deletions
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index 86cc887..b688701 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -52,6 +52,7 @@
#define AB8500_IT_LATCH8_REG 0x27
#define AB8500_IT_LATCH9_REG 0x28
#define AB8500_IT_LATCH10_REG 0x29
+#define AB8500_IT_LATCH12_REG 0x2B
#define AB8500_IT_LATCH19_REG 0x32
#define AB8500_IT_LATCH20_REG 0x33
#define AB8500_IT_LATCH21_REG 0x34
@@ -98,7 +99,7 @@
* offset 0.
*/
static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
- 0, 1, 2, 3, 4, 6, 7, 8, 9, 18, 19, 20, 21,
+ 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
};
static int ab8500_get_chip_id(struct device *dev)
@@ -252,6 +253,10 @@ static void ab8500_irq_sync_unlock(struct irq_data *data)
if (new == old)
continue;
+ /* Interrupt register 12 does'nt exist prior to version 0x20 */
+ if (ab8500_irq_regoffset[i] == 11 && ab8500->chip_id < 0x20)
+ continue;
+
ab8500->oldmask[i] = new;
reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i];
@@ -301,6 +306,10 @@ static irqreturn_t ab8500_irq(int irq, void *dev)
int status;
u8 value;
+ /* Interrupt register 12 does'nt exist prior to version 0x20 */
+ if (regoffset == 11 && ab8500->chip_id < 0x20)
+ continue;
+
status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
AB8500_IT_LATCH1_REG + regoffset, &value);
if (status < 0 || value == 0)
@@ -554,6 +563,12 @@ static struct resource ab8500_usb_resources[] = {
.end = AB8500_INT_VBUS_DET_R,
.flags = IORESOURCE_IRQ,
},
+ {
+ .name = "USB_LINK_STATUS",
+ .start = AB8500_INT_USB_LINK_STATUS,
+ .end = AB8500_INT_USB_LINK_STATUS,
+ .flags = IORESOURCE_IRQ,
+ },
};
static struct resource ab8500_temp_resources[] = {
@@ -670,8 +685,9 @@ int __devinit ab8500_init(struct ab8500 *ab8500)
* 0x0 - Early Drop
* 0x10 - Cut 1.0
* 0x11 - Cut 1.1
+ * 0x20 - Cut 2.0
*/
- if (value == 0x0 || value == 0x10 || value == 0x11) {
+ if (value == 0x0 || value == 0x10 || value == 0x11 || value == 0x20) {
ab8500->revision = value;
dev_info(ab8500->dev, "detected chip, revision: %#x\n", value);
} else {
@@ -684,18 +700,16 @@ int __devinit ab8500_init(struct ab8500 *ab8500)
plat->init(ab8500);
/* Clear and mask all interrupts */
- for (i = 0; i < 10; i++) {
- get_register_interruptible(ab8500, AB8500_INTERRUPT,
- AB8500_IT_LATCH1_REG + i, &value);
- set_register_interruptible(ab8500, AB8500_INTERRUPT,
- AB8500_IT_MASK1_REG + i, 0xff);
- }
+ for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) {
+ /* Interrupt register 12 does'nt exist prior to version 0x20 */
+ if (ab8500_irq_regoffset[i] == 11 && ab8500->chip_id < 0x20)
+ continue;
- for (i = 18; i < 24; i++) {
get_register_interruptible(ab8500, AB8500_INTERRUPT,
- AB8500_IT_LATCH1_REG + i, &value);
+ AB8500_IT_LATCH1_REG + ab8500_irq_regoffset[i],
+ &value);
set_register_interruptible(ab8500, AB8500_INTERRUPT,
- AB8500_IT_MASK1_REG + i, 0xff);
+ AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i], 0xff);
}
ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
OpenPOWER on IntegriCloud