diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/device/azalia_device.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/src/device/azalia_device.c b/src/device/azalia_device.c index c167373764..dadcda918e 100644 --- a/src/device/azalia_device.c +++ b/src/device/azalia_device.c @@ -155,10 +155,8 @@ u32 azalia_find_verb(const u32 *verb_table, u32 verb_table_bytes, u32 viddid, co } /* - * Wait 50usec for the codec to indicate it is ready. - * No response would imply that the codec is non-operative. + * Wait 50usec for the controller to indicate it is ready. */ - static int wait_for_ready(u8 *base) { struct stopwatch sw; @@ -179,7 +177,6 @@ static int wait_for_ready(u8 *base) * Wait for the codec to indicate that it accepted the previous command. * No response would imply that the codec is non-operative. */ - static int wait_for_valid(u8 *base) { struct stopwatch sw; @@ -206,6 +203,16 @@ static int wait_for_valid(u8 *base) udelay(1); } + /* + * HDA spec 1.0a "3.4.3 Offset 68h: Immediate Command Status" + * tells us to clear the busy bit explicitly, then poll until + * the controller is ready. + */ + write32(base + HDA_ICII_REG, 0); + if (wait_for_ready(base) < 0) { + printk(BIOS_WARNING, "azalia_audio: controller is unresponsive.\n"); + return -2; + } return -1; } @@ -238,7 +245,7 @@ __weak void mainboard_azalia_program_runtime_verbs(u8 *base, u32 viddid) static bool codec_is_operative(u8 *base, const int addr) { if (wait_for_ready(base) < 0) { - printk(BIOS_DEBUG, "azalia_audio: codec #%d not ready\n", addr); + printk(BIOS_WARNING, "azalia_audio: controller not ready\n"); return false; } @@ -246,7 +253,7 @@ static bool codec_is_operative(u8 *base, const int addr) write32(base + HDA_IC_REG, reg32); if (wait_for_valid(base) < 0) { - printk(BIOS_DEBUG, "azalia_audio: codec #%d not valid\n", addr); + printk(BIOS_NOTICE, "azalia_audio: codec #%d doesn't respond\n", addr); return false; } return true; |