ALSA: hda - Move low level functions to hda_controller

Share more code from hda_intel.  This moves the link control and
initialization to hda_controller.  The code will also be used by an
hda platform driver.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 175 deletions

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 3d6ccb8..4f693ef 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -340,159 +340,6 @@ static int azx_acquire_irq(struct azx *chip, int do_disconnect);
 static void azx_power_notify(struct hda_bus *bus, bool power_up);
 #endif
 
-/* enter link reset */
-static void azx_enter_link_reset(struct azx *chip)
-{
-	unsigned long timeout;
-
-	/* reset controller */
-	azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_RESET);
-
-	timeout = jiffies + msecs_to_jiffies(100);
-	while ((azx_readb(chip, GCTL) & ICH6_GCTL_RESET) &&
-			time_before(jiffies, timeout))
-		usleep_range(500, 1000);
-}
-
-/* exit link reset */
-static void azx_exit_link_reset(struct azx *chip)
-{
-	unsigned long timeout;
-
-	azx_writeb(chip, GCTL, azx_readb(chip, GCTL) | ICH6_GCTL_RESET);
-
-	timeout = jiffies + msecs_to_jiffies(100);
-	while (!azx_readb(chip, GCTL) &&
-			time_before(jiffies, timeout))
-		usleep_range(500, 1000);
-}
-
-/* reset codec link */
-static int azx_reset(struct azx *chip, int full_reset)
-{
-	if (!full_reset)
-		goto __skip;
-
-	/* clear STATESTS */
-	azx_writew(chip, STATESTS, STATESTS_INT_MASK);
-
-	/* reset controller */
-	azx_enter_link_reset(chip);
-
-	/* delay for >= 100us for codec PLL to settle per spec
-	 * Rev 0.9 section 5.5.1
-	 */
-	usleep_range(500, 1000);
-
-	/* Bring controller out of reset */
-	azx_exit_link_reset(chip);
-
-	/* Brent Chartrand said to wait >= 540us for codecs to initialize */
-	usleep_range(1000, 1200);
-
-      __skip:
-	/* check to see if controller is ready */
-	if (!azx_readb(chip, GCTL)) {
-		dev_dbg(chip->card->dev, "azx_reset: controller not ready!\n");
-		return -EBUSY;
-	}
-
-	/* Accept unsolicited responses */
-	if (!chip->single_cmd)
-		azx_writel(chip, GCTL, azx_readl(chip, GCTL) |
-			   ICH6_GCTL_UNSOL);
-
-	/* detect codecs */
-	if (!chip->codec_mask) {
-		chip->codec_mask = azx_readw(chip, STATESTS);
-		dev_dbg(chip->card->dev, "codec_mask = 0x%x\n",
-			chip->codec_mask);
-	}
-
-	return 0;
-}
-
-
-/*
- * Lowlevel interface
- */  
-
-/* enable interrupts */
-static void azx_int_enable(struct azx *chip)
-{
-	/* enable controller CIE and GIE */
-	azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) |
-		   ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN);
-}
-
-/* disable interrupts */
-static void azx_int_disable(struct azx *chip)
-{
-	int i;
-
-	/* disable interrupts in stream descriptor */
-	for (i = 0; i < chip->num_streams; i++) {
-		struct azx_dev *azx_dev = &chip->azx_dev[i];
-		azx_sd_writeb(chip, azx_dev, SD_CTL,
-			      azx_sd_readb(chip, azx_dev, SD_CTL) &
-					~SD_INT_MASK);
-	}
-
-	/* disable SIE for all streams */
-	azx_writeb(chip, INTCTL, 0);
-
-	/* disable controller CIE and GIE */
-	azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) &
-		   ~(ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN));
-}
-
-/* clear interrupts */
-static void azx_int_clear(struct azx *chip)
-{
-	int i;
-
-	/* clear stream status */
-	for (i = 0; i < chip->num_streams; i++) {
-		struct azx_dev *azx_dev = &chip->azx_dev[i];
-		azx_sd_writeb(chip, azx_dev, SD_STS, SD_INT_MASK);
-	}
-
-	/* clear STATESTS */
-	azx_writew(chip, STATESTS, STATESTS_INT_MASK);
-
-	/* clear rirb status */
-	azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
-
-	/* clear int status */
-	azx_writel(chip, INTSTS, ICH6_INT_CTRL_EN | ICH6_INT_ALL_STREAM);
-}
-
-/*
- * reset and start the controller registers
- */
-static void azx_init_chip(struct azx *chip, int full_reset)
-{
-	if (chip->initialized)
-		return;
-
-	/* reset controller */
-	azx_reset(chip, full_reset);
-
-	/* initialize interrupts */
-	azx_int_clear(chip);
-	azx_int_enable(chip);
-
-	/* initialize the codec command I/O */
-	if (!chip->single_cmd)
-		azx_init_cmd_io(chip);
-
-	/* program the position buffer */
-	azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr);
-	azx_writel(chip, DPUBASE, upper_32_bits(chip->posbuf.addr));
-
-	chip->initialized = 1;
-}
-
 /*
  * initialize the PCI registers
  */
@@ -660,8 +507,6 @@ static int probe_codec(struct azx *chip, int addr)
 	return 0;
 }
 
-static void azx_stop_chip(struct azx *chip);
-
 static void azx_bus_reset(struct hda_bus *bus)
 {
 	struct azx *chip = bus->private_data;
@@ -942,26 +787,6 @@ static int azx_acquire_irq(struct azx *chip, int do_disconnect)
 	return 0;
 }
 
-
-static void azx_stop_chip(struct azx *chip)
-{
-	if (!chip->initialized)
-		return;
-
-	/* disable interrupts */
-	azx_int_disable(chip);
-	azx_int_clear(chip);
-
-	/* disable CORB/RIRB */
-	azx_free_cmd_io(chip);
-
-	/* disable position buffer */
-	azx_writel(chip, DPLBASE, 0);
-	azx_writel(chip, DPUBASE, 0);
-
-	chip->initialized = 0;
-}
-
 #ifdef CONFIG_PM
 /* power-up/down the controller */
 static void azx_power_notify(struct hda_bus *bus, bool power_up)