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Commit d1fdf07e authored by Krzysztof Helt's avatar Krzysztof Helt Committed by Jaroslav Kysela
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[ALSA] sparc dbri: fixed setting of burst size after reset 



A proper way to set DBRI's burst size. The size must be set after
each chip reset.

Signed-off-by: default avatarKrzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 470f1f1a

sound/sparc/dbri.c

+9 −8
Original line number Diff line number Diff line
@@ -690,6 +690,7 @@ static void dbri_cmdsend(struct snd_dbri * dbri, volatile s32 * cmd) 
static void dbri_reset(struct snd_dbri * dbri)

{

	int i;

	u32 tmp;



	dprintk(D_GEN, "reset 0:%x 2:%x 8:%x 9:%x\n",

		sbus_readl(dbri->regs + REG0),
@@ -699,13 +700,20 @@ static void dbri_reset(struct snd_dbri * dbri) 
	sbus_writel(D_R, dbri->regs + REG0);	/* Soft Reset */

	for (i = 0; (sbus_readl(dbri->regs + REG0) & D_R) && i < 64; i++)

		udelay(10);



	/* A brute approach - DBRI falls back to working burst size by itself

	 * On SS20 D_S does not work, so do not try so high. */

	tmp = sbus_readl(dbri->regs + REG0);

	tmp |= D_G | D_E;

	tmp &= ~D_S;

	sbus_writel(tmp, dbri->regs + REG0);

}



/* Lock must not be held before calling this */

static void dbri_initialize(struct snd_dbri * dbri)

{

	volatile s32 *cmd;

	u32 dma_addr, tmp;

	u32 dma_addr;

	unsigned long flags;

	int n;
@@ -721,13 +729,6 @@ static void dbri_initialize(struct snd_dbri * dbri) 
	for (n = 0; n < DBRI_NO_PIPES; n++)

		dbri->pipes[n].desc = dbri->pipes[n].first_desc = -1;



	/* A brute approach - DBRI falls back to working burst size by itself

	 * On SS20 D_S does not work, so do not try so high. */

	tmp = sbus_readl(dbri->regs + REG0);

	tmp |= D_G | D_E;

	tmp &= ~D_S;

	sbus_writel(tmp, dbri->regs + REG0);



	/*

	 * Initialize the interrupt ringbuffer.

	 */