diff options
| author | Wai Yew CHAY <wychay@ctl.creative.com> | 2009-06-22 14:52:34 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-06-22 14:53:51 +0200 |
| commit | 29959a09cc1aabd2d5f4f03afc0305de6bd29248 (patch) | |
| tree | e7e4ed3d33995ab9e83ae378bb9d42fce63f8fde /sound/pci/ctxfi/cthw20k2.c | |
| parent | a8f4310be59a2e7fc80fba945bcb32b18f4ad54f (diff) | |
ALSA: ctxfi - Add PM support
Added the suspend/resume support to ctxfi driver.
The team tested on the following seems ok:
AMD Athlon 64 3500+ / ASUS A8N-E / 512MB DDR ATI / Radeon X1300
20k1 & 20k2 cards
Signed-off-by: Wai Yew CHAY <wychay@ctl.creative.com>
Singed-off-by: Ryan RICHARDS <ryan_richards@creativelabs.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ctxfi/cthw20k2.c')
| -rw-r--r-- | sound/pci/ctxfi/cthw20k2.c | 65 |
1 files changed, 52 insertions, 13 deletions
diff --git a/sound/pci/ctxfi/cthw20k2.c b/sound/pci/ctxfi/cthw20k2.c index 4493a51c6b0..dec46d04b04 100644 --- a/sound/pci/ctxfi/cthw20k2.c +++ b/sound/pci/ctxfi/cthw20k2.c @@ -1860,16 +1860,18 @@ static int hw_card_start(struct hw *hw) goto error1; } - err = pci_request_regions(pci, "XFi"); - if (err < 0) - goto error1; + if (!hw->io_base) { + err = pci_request_regions(pci, "XFi"); + if (err < 0) + goto error1; - hw->io_base = pci_resource_start(hw->pci, 2); - hw->mem_base = (unsigned long)ioremap(hw->io_base, + hw->io_base = pci_resource_start(hw->pci, 2); + hw->mem_base = (unsigned long)ioremap(hw->io_base, pci_resource_len(hw->pci, 2)); - if (NULL == (void *)hw->mem_base) { - err = -ENOENT; - goto error2; + if (NULL == (void *)hw->mem_base) { + err = -ENOENT; + goto error2; + } } /* Switch to 20k2 mode from UAA mode. */ @@ -1901,6 +1903,15 @@ error1: static int hw_card_stop(struct hw *hw) { + unsigned int data; + + /* disable transport bus master and queueing of request */ + hw_write_20kx(hw, TRANSPORT_CTL, 0x00); + + /* disable pll */ + data = hw_read_20kx(hw, PLL_ENB); + hw_write_20kx(hw, PLL_ENB, (data & (~0x07))); + /* TODO: Disable interrupt and so on... */ return 0; } @@ -1939,11 +1950,9 @@ static int hw_card_init(struct hw *hw, struct card_conf *info) /* Get PCI io port/memory base address and * do 20kx core switch if needed. */ - if (!hw->io_base) { - err = hw_card_start(hw); - if (err) - return err; - } + err = hw_card_start(hw); + if (err) + return err; /* PLL init */ err = hw_pll_init(hw, info->rsr); @@ -2006,6 +2015,32 @@ static int hw_card_init(struct hw *hw, struct card_conf *info) return 0; } +#ifdef CONFIG_PM +static int hw_suspend(struct hw *hw, pm_message_t state) +{ + struct pci_dev *pci = hw->pci; + + hw_card_stop(hw); + + pci_disable_device(pci); + pci_save_state(pci); + pci_set_power_state(pci, pci_choose_state(pci, state)); + + return 0; +} + +static int hw_resume(struct hw *hw, struct card_conf *info) +{ + struct pci_dev *pci = hw->pci; + + pci_set_power_state(pci, PCI_D0); + pci_restore_state(pci); + + /* Re-initialize card hardware. */ + return hw_card_init(hw, info); +} +#endif + static u32 hw_read_20kx(struct hw *hw, u32 reg) { return readl((void *)(hw->mem_base + reg)); @@ -2025,6 +2060,10 @@ static struct hw ct20k2_preset __devinitdata = { .is_adc_source_selected = hw_is_adc_input_selected, .select_adc_source = hw_adc_input_select, .have_digit_io_switch = hw_have_digit_io_switch, +#ifdef CONFIG_PM + .suspend = hw_suspend, + .resume = hw_resume, +#endif .src_rsc_get_ctrl_blk = src_get_rsc_ctrl_blk, .src_rsc_put_ctrl_blk = src_put_rsc_ctrl_blk, |