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serial: omap: define helpers for pdata function pointers 

this patch is in preparation to a few other changes
which will align on the prototype for function
pointers passed through pdata.

It also helps cleaning up the driver a little by
agregating checks for pdata in a single location.

Tested-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felipe Balbi 2012-08-23 13:32:42 +03:00 committed by Greg Kroah-Hartman
parent c990f35103
commit e5b57c037a
1 changed files with 47 additions and 19 deletions
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66
drivers/tty/serial/omap-serial.c
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@ -102,6 +102,40 @@ static inline void serial_omap_clear_fifos(struct uart_omap_port *up)
serial_out(up, UART_FCR, 0);
}
static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
{
struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
if (!pdata->get_context_loss_count)
return 0;
return pdata->get_context_loss_count(&up->pdev->dev);
}
static void serial_omap_set_forceidle(struct uart_omap_port *up)
{
struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
if (pdata->set_forceidle)
pdata->set_forceidle(up->pdev);
}
static void serial_omap_set_noidle(struct uart_omap_port *up)
{
struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
if (pdata->set_noidle)
pdata->set_noidle(up->pdev);
}
static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
{
struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
if (pdata->enable_wakeup)
pdata->enable_wakeup(up->pdev, enable);
}
/*
* serial_omap_get_divisor - calculate divisor value
* @port: uart port info
@ -178,8 +212,8 @@ static void serial_omap_stop_tx(struct uart_port *port)
serial_out(up, UART_IER, up->ier);
}
if (!up->use_dma && pdata && pdata->set_forceidle)
pdata->set_forceidle(up->pdev);
if (!up->use_dma && pdata)
serial_omap_set_forceidle(up);
pm_runtime_mark_last_busy(&up->pdev->dev);
pm_runtime_put_autosuspend(&up->pdev->dev);
@ -309,7 +343,6 @@ static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up)
static void serial_omap_start_tx(struct uart_port *port)
{
struct uart_omap_port *up = to_uart_omap_port(port);
struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
struct circ_buf *xmit;
unsigned int start;
int ret = 0;
@ -317,8 +350,7 @@ static void serial_omap_start_tx(struct uart_port *port)
if (!up->use_dma) {
pm_runtime_get_sync(&up->pdev->dev);
serial_omap_enable_ier_thri(up);
if (pdata && pdata->set_noidle)
pdata->set_noidle(up->pdev);
serial_omap_set_noidle(up);
pm_runtime_mark_last_busy(&up->pdev->dev);
pm_runtime_put_autosuspend(&up->pdev->dev);
return;
@ -1681,28 +1713,26 @@ static int serial_omap_runtime_suspend(struct device *dev)
if (!up)
return -EINVAL;
if (!pdata || !pdata->enable_wakeup)
if (!pdata)
return 0;
if (pdata->get_context_loss_count)
up->context_loss_cnt = pdata->get_context_loss_count(dev);
up->context_loss_cnt = serial_omap_get_context_loss_count(up);
if (device_may_wakeup(dev)) {
if (!up->wakeups_enabled) {
pdata->enable_wakeup(up->pdev, true);
serial_omap_enable_wakeup(up, true);
up->wakeups_enabled = true;
}
} else {
if (up->wakeups_enabled) {
pdata->enable_wakeup(up->pdev, false);
serial_omap_enable_wakeup(up, false);
up->wakeups_enabled = false;
}
}
/* Errata i291 */
if (up->use_dma && pdata->set_forceidle &&
(up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
pdata->set_forceidle(up->pdev);
if (up->use_dma && (up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
serial_omap_set_forceidle(up);
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
schedule_work(&up->qos_work);
@ -1716,17 +1746,15 @@ static int serial_omap_runtime_resume(struct device *dev)
struct omap_uart_port_info *pdata = dev->platform_data;
if (up && pdata) {
if (pdata->get_context_loss_count) {
u32 loss_cnt = pdata->get_context_loss_count(dev);
u32 loss_cnt = serial_omap_get_context_loss_count(up);
if (up->context_loss_cnt != loss_cnt)
serial_omap_restore_context(up);
}
/* Errata i291 */
if (up->use_dma && pdata->set_noidle &&
(up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
pdata->set_noidle(up->pdev);
if ((up->errata & UART_ERRATA_i291_DMA_FORCEIDLE) &&
up->use_dma)
serial_omap_set_noidle(up);
up->latency = up->calc_latency;
schedule_work(&up->qos_work);