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Commit e8227689 authored by Daniel Scheller's avatar Daniel Scheller Committed by Mauro Carvalho Chehab
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media: ddbridge: add macros to handle IRQs in nibble and byte blocks 



Currently, each IRQ requires one IRQ_HANDLE() line to call each IRQ
handler that was set up. Add a IRQ_HANDLE_NIBBLE() and IRQ_HANDLE_BYTE()
macro to call all handlers in blocks of four (_NIBBLE) or eight (_BYTE)
handlers at a time, to make this construct more compact.

Picked up from the upstream dddvb-0.9.33 release.

Signed-off-by: default avatarDaniel Scheller <d.scheller@gmx.net>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 1dda87ac

drivers/media/pci/ddbridge/ddbridge-core.c

+27 −40
Original line number Diff line number Diff line
@@ -2388,54 +2388,41 @@ void ddb_ports_release(struct ddb *dev) 
		dev->link[0].irq[_nr].handler(dev->link[0].irq[_nr].data); } \

	while (0)



#define IRQ_HANDLE_NIBBLE(_shift) {		     \

	if (s & (0x0000000f << ((_shift) & 0x1f))) { \

		IRQ_HANDLE(0 + (_shift));	     \

		IRQ_HANDLE(1 + (_shift));	     \

		IRQ_HANDLE(2 + (_shift));	     \

		IRQ_HANDLE(3 + (_shift));	     \

	}					     \

}



#define IRQ_HANDLE_BYTE(_shift) {		     \

	if (s & (0x000000ff << ((_shift) & 0x1f))) { \

		IRQ_HANDLE(0 + (_shift));	     \

		IRQ_HANDLE(1 + (_shift));	     \

		IRQ_HANDLE(2 + (_shift));	     \

		IRQ_HANDLE(3 + (_shift));	     \

		IRQ_HANDLE(4 + (_shift));	     \

		IRQ_HANDLE(5 + (_shift));	     \

		IRQ_HANDLE(6 + (_shift));	     \

		IRQ_HANDLE(7 + (_shift));	     \

	}					     \

}



static void irq_handle_msg(struct ddb *dev, u32 s)

{

	dev->i2c_irq++;

	IRQ_HANDLE(0);

	IRQ_HANDLE(1);

	IRQ_HANDLE(2);

	IRQ_HANDLE(3);

	IRQ_HANDLE_NIBBLE(0);

}



static void irq_handle_io(struct ddb *dev, u32 s)

{

	dev->ts_irq++;

	if ((s & 0x000000f0)) {

		IRQ_HANDLE(4);

		IRQ_HANDLE(5);

		IRQ_HANDLE(6);

		IRQ_HANDLE(7);

	}

	if ((s & 0x0000ff00)) {

		IRQ_HANDLE(8);

		IRQ_HANDLE(9);

		IRQ_HANDLE(10);

		IRQ_HANDLE(11);

		IRQ_HANDLE(12);

		IRQ_HANDLE(13);

		IRQ_HANDLE(14);

		IRQ_HANDLE(15);

	}

	if ((s & 0x00ff0000)) {

		IRQ_HANDLE(16);

		IRQ_HANDLE(17);

		IRQ_HANDLE(18);

		IRQ_HANDLE(19);

		IRQ_HANDLE(20);

		IRQ_HANDLE(21);

		IRQ_HANDLE(22);

		IRQ_HANDLE(23);

	}

	if ((s & 0xff000000)) {

		IRQ_HANDLE(24);

		IRQ_HANDLE(25);

		IRQ_HANDLE(26);

		IRQ_HANDLE(27);

		IRQ_HANDLE(28);

		IRQ_HANDLE(29);

		IRQ_HANDLE(30);

		IRQ_HANDLE(31);

	}

	IRQ_HANDLE_NIBBLE(4);

	IRQ_HANDLE_BYTE(8);

	IRQ_HANDLE_BYTE(16);

	IRQ_HANDLE_BYTE(24);

}



irqreturn_t ddb_irq_handler0(int irq, void *dev_id)