From f5d40b30ed4daf09f1d43f9b2da1263b17a53c28 Mon Sep 17 00:00:00 2001 From: Frederick Li Date: Thu, 12 May 2005 14:55:20 +0200 Subject: [ALSA] Adding support for ATI IXP450 HD Audio device support Documentation,HDA Intel driver This patch changes the Intel HD Audio device driver to include the support of HD Audio device embedded in ATI south bridge IXP450. Because the design of ATI chipset follows intel HD Audio specification 1.0, the programming method is the same as that of intel HD Audio device exception one minor change which requires to enable snoop for DMA transport. There are 3 changes that have been made to hda_intel.c file. 1. Added device ID for ATI HD Audio device; 2. Increase maximum CODEC supported to 4; 3. Enable snoop during the driver initialization. Signed-off-by: Frederick Li Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_intel.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'sound/pci/hda/hda_intel.c') diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 104593fa08eb..d8329a79bcd2 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -68,7 +68,8 @@ MODULE_LICENSE("GPL"); MODULE_SUPPORTED_DEVICE("{{Intel, ICH6}," "{Intel, ICH6M}," "{Intel, ICH7}," - "{Intel, ESB2}}"); + "{Intel, ESB2}," + "{ATI, SB450}}"); MODULE_DESCRIPTION("Intel HDA driver"); #define SFX "hda-intel: " @@ -153,7 +154,7 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 }; /* STATESTS int mask: SD2,SD1,SD0 */ #define STATESTS_INT_MASK 0x07 -#define AZX_MAX_CODECS 3 +#define AZX_MAX_CODECS 4 /* SD_CTL bits */ #define SD_CTL_STREAM_RESET 0x01 /* stream reset bit */ @@ -193,6 +194,12 @@ enum { POS_FIX_POSBUF }; +/* Defines for ATI HD Audio support in SB450 south bridge */ +#define ATI_SB450_HDAUDIO_PCI_DEVICE_ID 0x437b +#define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR 0x42 +#define ATI_SB450_HDAUDIO_ENABLE_SNOOP 0x02 + + /* * Use CORB/RIRB for communication from/to codecs. * This is the way recommended by Intel (see below). @@ -644,7 +651,7 @@ static void azx_stream_stop(azx_t *chip, azx_dev_t *azx_dev) */ static void azx_init_chip(azx_t *chip) { - unsigned char tcsel_reg; + unsigned char tcsel_reg, ati_misc_cntl2; /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44) * TCSEL == Traffic Class Select Register, which sets PCI express QOS @@ -668,6 +675,15 @@ static void azx_init_chip(azx_t *chip) azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr); azx_writel(chip, DPUBASE, upper_32bit(chip->posbuf.addr)); } + + /* For ATI SB450 azalia HD audio, we need to enable snoop */ + if (chip->pci->vendor == PCI_VENDOR_ID_ATI && + chip->pci->device == ATI_SB450_HDAUDIO_PCI_DEVICE_ID) { + pci_read_config_byte(chip->pci, ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, + &ati_misc_cntl2); + pci_write_config_byte(chip->pci, ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, + (ati_misc_cntl2 & 0xf8) | ATI_SB450_HDAUDIO_ENABLE_SNOOP); + } } @@ -1435,6 +1451,7 @@ static struct pci_device_id azx_ids[] = { { 0x8086, 0x2668, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ICH6 */ { 0x8086, 0x27d8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ICH7 */ { 0x8086, 0x269a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ESB2 */ + { 0x1002, 0x437b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ATI SB450 */ { 0, } }; MODULE_DEVICE_TABLE(pci, azx_ids); -- cgit v1.2.3