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Commit f43923ff authored by Dylan Reid's avatar Dylan Reid Committed by Takashi Iwai
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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: default avatarDylan Reid <dgreid@chromium.org>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f19c3ec2
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Showing with 180 additions and 179 deletions
sound/pci/hda/hda_controller.c
View file @ f43923ff
......@@ -1039,7 +1039,7 @@ static int azx_alloc_cmd_io(struct azx *chip)
}
EXPORT_SYMBOL_GPL(azx_alloc_cmd_io);
void azx_init_cmd_io(struct azx *chip)
static void azx_init_cmd_io(struct azx *chip)
{
int timeout;
......@@ -1102,7 +1102,7 @@ void azx_init_cmd_io(struct azx *chip)
}
EXPORT_SYMBOL_GPL(azx_init_cmd_io);
void azx_free_cmd_io(struct azx *chip)
static void azx_free_cmd_io(struct azx *chip)
{
spin_lock_irq(&chip->reg_lock);
/* disable ringbuffer DMAs */
......@@ -1574,5 +1574,178 @@ void azx_free_stream_pages(struct azx *chip)
}
EXPORT_SYMBOL_GPL(azx_free_stream_pages);
/*
* Lowlevel interface
*/
/* enter link reset */
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);
}
EXPORT_SYMBOL_GPL(azx_enter_link_reset);
/* 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;
}
/* 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
*/
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;
}
EXPORT_SYMBOL_GPL(azx_init_chip);
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;
}
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Common HDA driver funcitons");
sound/pci/hda/hda_controller.h
View file @ f43923ff
......@@ -50,11 +50,14 @@ void azx_free_stream_pages(struct azx *chip);
/*
* CORB / RIRB interface
*/
void azx_init_cmd_io(struct azx *chip);
void azx_free_cmd_io(struct azx *chip);
void azx_update_rirb(struct azx *chip);
int azx_send_cmd(struct hda_bus *bus, unsigned int val);
unsigned int azx_get_response(struct hda_bus *bus,
unsigned int addr);
/* Low level azx interface */
void azx_init_chip(struct azx *chip, int full_reset);
void azx_stop_chip(struct azx *chip);
void azx_enter_link_reset(struct azx *chip);
#endif /* __SOUND_HDA_CONTROLLER_H */
sound/pci/hda/hda_intel.c
View file @ f43923ff
......@@ -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)
......
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