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authorWai Yew CHAY <wychay@ctl.creative.com>2009-06-22 14:52:34 +0200
committerTakashi Iwai <tiwai@suse.de>2009-06-22 14:53:51 +0200
commit29959a09cc1aabd2d5f4f03afc0305de6bd29248 (patch)
treee7e4ed3d33995ab9e83ae378bb9d42fce63f8fde /sound/pci/ctxfi/cthw20k2.c
parenta8f4310be59a2e7fc80fba945bcb32b18f4ad54f (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.c65
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,