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usb: gadget: atmel_usba_udc: simplify setting of interrupt-enabled mask 

This patch adds set and clear functions for enabling/disabling
interrupts.  This simplifies the implementation a bit as the masking of
previously set bits doesn't need to be so explicit.

Signed-off-by: Jonas Bonn <jonas@norrbonn.se>
CC: Cristian Birsan <cristian.birsan@microchip.com>
CC: Felipe Balbi <balbi@kernel.org>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Nicolas Ferre <nicolas.ferre@microchip.com>
CC: Alexandre Belloni <alexandre.belloni@bootlin.com>
CC: Ludovic Desroches <ludovic.desroches@microchip.com>
CC: linux-arm-kernel@lists.infradead.org
CC: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Jonas Bonn 2019-02-20 13:19:59 +01:00 committed by Felipe Balbi
parent 5acb4b9701
commit 66b61e27a9
1 changed files with 19 additions and 10 deletions
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29
drivers/usb/gadget/udc/atmel_usba_udc.c
View File

@ -358,8 +358,20 @@ static inline u32 usba_int_enb_get(struct usba_udc *udc)
return udc->int_enb_cache;
}
static inline void usba_int_enb_set(struct usba_udc *udc, u32 val)
static inline void usba_int_enb_set(struct usba_udc *udc, u32 mask)
{
u32 val;
val = udc->int_enb_cache | mask;
usba_writel(udc, INT_ENB, val);
udc->int_enb_cache = val;
}
static inline void usba_int_enb_clear(struct usba_udc *udc, u32 mask)
{
u32 val;
val = udc->int_enb_cache & ~mask;
usba_writel(udc, INT_ENB, val);
udc->int_enb_cache = val;
}
@ -629,14 +641,12 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
if (ep->can_dma) {
u32 ctrl;
usba_int_enb_set(udc, usba_int_enb_get(udc) |
USBA_BF(EPT_INT, 1 << ep->index) |
usba_int_enb_set(udc, USBA_BF(EPT_INT, 1 << ep->index) |
USBA_BF(DMA_INT, 1 << ep->index));
ctrl = USBA_AUTO_VALID | USBA_INTDIS_DMA;
usba_ep_writel(ep, CTL_ENB, ctrl);
} else {
usba_int_enb_set(udc, usba_int_enb_get(udc) |
USBA_BF(EPT_INT, 1 << ep->index));
usba_int_enb_set(udc, USBA_BF(EPT_INT, 1 << ep->index));
}
spin_unlock_irqrestore(&udc->lock, flags);
@ -680,8 +690,7 @@ static int usba_ep_disable(struct usb_ep *_ep)
usba_dma_readl(ep, STATUS);
}
usba_ep_writel(ep, CTL_DIS, USBA_EPT_ENABLE);
usba_int_enb_set(udc, usba_int_enb_get(udc) &
~USBA_BF(EPT_INT, 1 << ep->index));
usba_int_enb_clear(udc, USBA_BF(EPT_INT, 1 << ep->index));
request_complete_list(ep, &req_list, -ESHUTDOWN);
@ -1710,7 +1719,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
if (status & USBA_DET_SUSPEND) {
toggle_bias(udc, 0);
usba_writel(udc, INT_CLR, USBA_DET_SUSPEND);
usba_int_enb_set(udc, int_enb | USBA_WAKE_UP);
usba_int_enb_set(udc, USBA_WAKE_UP);
udc->bias_pulse_needed = true;
DBG(DBG_BUS, "Suspend detected\n");
if (udc->gadget.speed != USB_SPEED_UNKNOWN
@ -1724,7 +1733,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
if (status & USBA_WAKE_UP) {
toggle_bias(udc, 1);
usba_writel(udc, INT_CLR, USBA_WAKE_UP);
usba_int_enb_set(udc, int_enb & ~USBA_WAKE_UP);
usba_int_enb_clear(udc, USBA_WAKE_UP);
DBG(DBG_BUS, "Wake Up CPU detected\n");
}
@ -1793,7 +1802,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
| USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE)));
usba_ep_writel(ep0, CTL_ENB,
USBA_EPT_ENABLE | USBA_RX_SETUP);
usba_int_enb_set(udc, int_enb | USBA_BF(EPT_INT, 1) |
usba_int_enb_set(udc, USBA_BF(EPT_INT, 1) |
USBA_DET_SUSPEND | USBA_END_OF_RESUME);
/*