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ahci: make ahci_transmit_led_message into a function pointer 

Create a new ata_port_operations function pointer called
transmit_led_message and give it the default value of
ahci_transmit_led_message. This allows AHCI controllers with
non-standard LED interfaces to use the existing em_ interface.

Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Mark Langsdorf 2013-05-30 15:17:30 -05:00 committed by Tejun Heo
parent 0a86e1c857
commit 439d7a358f
2 changed files with 9 additions and 5 deletions
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11
drivers/ata/libahci.c
View File

@ -173,6 +173,7 @@ struct ata_port_operations ahci_ops = {
.em_store = ahci_led_store,
.sw_activity_show = ahci_activity_show,
.sw_activity_store = ahci_activity_store,
.transmit_led_message = ahci_transmit_led_message,
#ifdef CONFIG_PM
.port_suspend = ahci_port_suspend,
.port_resume = ahci_port_resume,
@ -774,7 +775,7 @@ static void ahci_start_port(struct ata_port *ap)
/* EM Transmit bit maybe busy during init */
for (i = 0; i < EM_MAX_RETRY; i++) {
rc = ahci_transmit_led_message(ap,
rc = ap->ops->transmit_led_message(ap,
emp->led_state,
4);
if (rc == -EBUSY)
@ -915,7 +916,7 @@ static void ahci_sw_activity_blink(unsigned long arg)
led_message |= (1 << 16);
}
spin_unlock_irqrestore(ap->lock, flags);
ahci_transmit_led_message(ap, led_message, 4);
ap->ops->transmit_led_message(ap, led_message, 4);
}
static void ahci_init_sw_activity(struct ata_link *link)
@ -1044,7 +1045,7 @@ static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
if (emp->blink_policy)
state &= ~EM_MSG_LED_VALUE_ACTIVITY;
return ahci_transmit_led_message(ap, state, size);
return ap->ops->transmit_led_message(ap, state, size);
}
static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val)
@ -1063,7 +1064,7 @@ static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val)
/* set the LED to OFF */
port_led_state &= EM_MSG_LED_VALUE_OFF;
port_led_state |= (ap->port_no | (link->pmp << 8));
ahci_transmit_led_message(ap, port_led_state, 4);
ap->ops->transmit_led_message(ap, port_led_state, 4);
} else {
link->flags |= ATA_LFLAG_SW_ACTIVITY;
if (val == BLINK_OFF) {
@ -1071,7 +1072,7 @@ static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val)
port_led_state &= EM_MSG_LED_VALUE_OFF;
port_led_state |= (ap->port_no | (link->pmp << 8));
port_led_state |= EM_MSG_LED_VALUE_ON; /* check this */
ahci_transmit_led_message(ap, port_led_state, 4);
ap->ops->transmit_led_message(ap, port_led_state, 4);
}
}
emp->blink_policy = val;

3
include/linux/libata.h
View File

@ -910,6 +910,9 @@ struct ata_port_operations {
ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
ssize_t (*sw_activity_store)(struct ata_device *dev,
enum sw_activity val);
ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
ssize_t size);
/*
* Obsolete
*/