diff options
| author | Simon Glass | 2019-02-16 20:24:52 -0700 |
|---|---|---|
| committer | Bin Meng | 2019-02-20 15:27:08 +0800 |
| commit | 67b0cda76a19c5fc8a0019cfdc4af9006bfad8d5 (patch) | |
| tree | 170a6e60db542b4d2195b2442249426bc3593b0c /arch/x86/cpu | |
| parent | 1260f8c0efe126cf952c1bc19d975af34908a79d (diff) | |
x86: ivybridge: Add a way to get the HDA config setting
Add a way check to whether HD audio is enabled. Use ioctl() to avoid
adding too many unusual operations to PCH.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/cpu')
| -rw-r--r-- | arch/x86/cpu/ivybridge/bd82x6x.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c index a78bb025440..ed9bce64168 100644 --- a/arch/x86/cpu/ivybridge/bd82x6x.c +++ b/arch/x86/cpu/ivybridge/bd82x6x.c @@ -20,8 +20,12 @@ DECLARE_GLOBAL_DATA_PTR; -#define GPIO_BASE 0x48 -#define BIOS_CTRL 0xdc +#define GPIO_BASE 0x48 +#define BIOS_CTRL 0xdc + +#define RCBA_AUDIO_CONFIG 0x2030 +#define RCBA_AUDIO_CONFIG_HDA BIT(31) +#define RCBA_AUDIO_CONFIG_MASK 0xfe #ifndef CONFIG_HAVE_FSP static int pch_revision_id = -1; @@ -212,10 +216,29 @@ static int bd82x6x_get_gpio_base(struct udevice *dev, u32 *gbasep) return 0; } +static int bd82x6x_ioctl(struct udevice *dev, enum pch_req_t req, void *data, + int size) +{ + u32 rcba, val; + + switch (req) { + case PCH_REQ_HDA_CONFIG: + dm_pci_read_config32(dev, PCH_RCBA, &rcba); + val = readl(rcba + RCBA_AUDIO_CONFIG); + if (!(val & RCBA_AUDIO_CONFIG_HDA)) + return -ENOENT; + + return val & RCBA_AUDIO_CONFIG_MASK; + default: + return -ENOSYS; + } +} + static const struct pch_ops bd82x6x_pch_ops = { .get_spi_base = bd82x6x_pch_get_spi_base, .set_spi_protect = bd82x6x_set_spi_protect, .get_gpio_base = bd82x6x_get_gpio_base, + .ioctl = bd82x6x_ioctl, }; static const struct udevice_id bd82x6x_ids[] = { |