Commit afe1baa8 authored by Alex Elder's avatar Alex Elder Committed by David S. Miller

net: ipa: move ipa_suspend_handler()

Move ipa_suspend_handler() into "ipa_clock.c" from "ipa_main.c", to
group with the reset of the suspend/resume code.  This IPA interrupt
is triggered if an IPA RX endpoint is suspended but has a packet to
be delivered.

Introduce ipa_power_setup() and ipa_power_teardown() to add and
remove the handler for the IPA SUSPEND interrupt at the same place
as before, while allowing the handler to remain private.

The "power" naming convention will be adopted elsewhere in this
file as well (soon).
Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 73ff316d
...@@ -279,6 +279,40 @@ u32 ipa_clock_rate(struct ipa *ipa) ...@@ -279,6 +279,40 @@ u32 ipa_clock_rate(struct ipa *ipa)
return ipa->clock ? (u32)clk_get_rate(ipa->clock->core) : 0; return ipa->clock ? (u32)clk_get_rate(ipa->clock->core) : 0;
} }
/**
* ipa_suspend_handler() - Handle the suspend IPA interrupt
* @ipa: IPA pointer
* @irq_id: IPA interrupt type (unused)
*
* If an RX endpoint is suspended, and the IPA has a packet destined for
* that endpoint, the IPA generates a SUSPEND interrupt to inform the AP
* that it should resume the endpoint. If we get one of these interrupts
* we just wake up the system.
*/
static void ipa_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
{
/* Just report the event, and let system resume handle the rest.
* More than one endpoint could signal this; if so, ignore
* all but the first.
*/
if (!test_and_set_bit(IPA_FLAG_RESUMED, ipa->flags))
pm_wakeup_dev_event(&ipa->pdev->dev, 0, true);
/* Acknowledge/clear the suspend interrupt on all endpoints */
ipa_interrupt_suspend_clear_all(ipa->interrupt);
}
void ipa_power_setup(struct ipa *ipa)
{
ipa_interrupt_add(ipa->interrupt, IPA_IRQ_TX_SUSPEND,
ipa_suspend_handler);
}
void ipa_power_teardown(struct ipa *ipa)
{
ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_TX_SUSPEND);
}
/* Initialize IPA clocking */ /* Initialize IPA clocking */
struct ipa_clock * struct ipa_clock *
ipa_clock_init(struct device *dev, const struct ipa_clock_data *data) ipa_clock_init(struct device *dev, const struct ipa_clock_data *data)
......
...@@ -22,6 +22,18 @@ extern const struct dev_pm_ops ipa_pm_ops; ...@@ -22,6 +22,18 @@ extern const struct dev_pm_ops ipa_pm_ops;
*/ */
u32 ipa_clock_rate(struct ipa *ipa); u32 ipa_clock_rate(struct ipa *ipa);
/**
* ipa_power_setup() - Set up IPA power management
* @ipa: IPA pointer
*/
void ipa_power_setup(struct ipa *ipa);
/**
* ipa_power_teardown() - Inverse of ipa_power_setup()
* @ipa: IPA pointer
*/
void ipa_power_teardown(struct ipa *ipa);
/** /**
* ipa_clock_init() - Initialize IPA clocking * ipa_clock_init() - Initialize IPA clocking
* @dev: IPA device * @dev: IPA device
......
...@@ -79,29 +79,6 @@ ...@@ -79,29 +79,6 @@
/* Divider for 19.2 MHz crystal oscillator clock to get common timer clock */ /* Divider for 19.2 MHz crystal oscillator clock to get common timer clock */
#define IPA_XO_CLOCK_DIVIDER 192 /* 1 is subtracted where used */ #define IPA_XO_CLOCK_DIVIDER 192 /* 1 is subtracted where used */
/**
* ipa_suspend_handler() - Handle the suspend IPA interrupt
* @ipa: IPA pointer
* @irq_id: IPA interrupt type (unused)
*
* If an RX endpoint is in suspend state, and the IPA has a packet
* destined for that endpoint, the IPA generates a SUSPEND interrupt
* to inform the AP that it should resume the endpoint. If we get
* one of these interrupts we just resume everything.
*/
static void ipa_suspend_handler(struct ipa *ipa, enum ipa_irq_id irq_id)
{
/* Just report the event, and let system resume handle the rest.
* More than one endpoint could signal this; if so, ignore
* all but the first.
*/
if (!test_and_set_bit(IPA_FLAG_RESUMED, ipa->flags))
pm_wakeup_dev_event(&ipa->pdev->dev, 0, true);
/* Acknowledge/clear the suspend interrupt on all endpoints */
ipa_interrupt_suspend_clear_all(ipa->interrupt);
}
/** /**
* ipa_setup() - Set up IPA hardware * ipa_setup() - Set up IPA hardware
* @ipa: IPA pointer * @ipa: IPA pointer
...@@ -124,12 +101,11 @@ int ipa_setup(struct ipa *ipa) ...@@ -124,12 +101,11 @@ int ipa_setup(struct ipa *ipa)
if (ret) if (ret)
return ret; return ret;
ipa_interrupt_add(ipa->interrupt, IPA_IRQ_TX_SUSPEND, ipa_power_setup(ipa);
ipa_suspend_handler);
ret = device_init_wakeup(dev, true); ret = device_init_wakeup(dev, true);
if (ret) if (ret)
goto err_interrupt_remove; goto err_gsi_teardown;
ipa_endpoint_setup(ipa); ipa_endpoint_setup(ipa);
...@@ -177,9 +153,9 @@ int ipa_setup(struct ipa *ipa) ...@@ -177,9 +153,9 @@ int ipa_setup(struct ipa *ipa)
ipa_endpoint_disable_one(command_endpoint); ipa_endpoint_disable_one(command_endpoint);
err_endpoint_teardown: err_endpoint_teardown:
ipa_endpoint_teardown(ipa); ipa_endpoint_teardown(ipa);
ipa_power_teardown(ipa);
(void)device_init_wakeup(dev, false); (void)device_init_wakeup(dev, false);
err_interrupt_remove: err_gsi_teardown:
ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_TX_SUSPEND);
gsi_teardown(&ipa->gsi); gsi_teardown(&ipa->gsi);
return ret; return ret;
...@@ -204,8 +180,8 @@ static void ipa_teardown(struct ipa *ipa) ...@@ -204,8 +180,8 @@ static void ipa_teardown(struct ipa *ipa)
command_endpoint = ipa->name_map[IPA_ENDPOINT_AP_COMMAND_TX]; command_endpoint = ipa->name_map[IPA_ENDPOINT_AP_COMMAND_TX];
ipa_endpoint_disable_one(command_endpoint); ipa_endpoint_disable_one(command_endpoint);
ipa_endpoint_teardown(ipa); ipa_endpoint_teardown(ipa);
ipa_power_teardown(ipa);
(void)device_init_wakeup(&ipa->pdev->dev, false); (void)device_init_wakeup(&ipa->pdev->dev, false);
ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_TX_SUSPEND);
gsi_teardown(&ipa->gsi); gsi_teardown(&ipa->gsi);
} }
...@@ -474,7 +450,7 @@ static int ipa_config(struct ipa *ipa, const struct ipa_data *data) ...@@ -474,7 +450,7 @@ static int ipa_config(struct ipa *ipa, const struct ipa_data *data)
ret = ipa_endpoint_config(ipa); ret = ipa_endpoint_config(ipa);
if (ret) if (ret)
goto err_interrupt_deconfig; goto err_uc_deconfig;
ipa_table_config(ipa); /* No deconfig required */ ipa_table_config(ipa); /* No deconfig required */
...@@ -491,7 +467,7 @@ static int ipa_config(struct ipa *ipa, const struct ipa_data *data) ...@@ -491,7 +467,7 @@ static int ipa_config(struct ipa *ipa, const struct ipa_data *data)
err_endpoint_deconfig: err_endpoint_deconfig:
ipa_endpoint_deconfig(ipa); ipa_endpoint_deconfig(ipa);
err_interrupt_deconfig: err_uc_deconfig:
ipa_uc_deconfig(ipa); ipa_uc_deconfig(ipa);
ipa_interrupt_deconfig(ipa->interrupt); ipa_interrupt_deconfig(ipa->interrupt);
ipa->interrupt = NULL; ipa->interrupt = NULL;
......
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