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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>
This commit is contained in:
Simon Glass 2019-02-16 20:24:52 -07:00 committed by Bin Meng
parent 1260f8c0ef
commit 67b0cda76a
2 changed files with 28 additions and 2 deletions
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27
arch/x86/cpu/ivybridge/bd82x6x.c
View File

@ -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[] = {

3
include/pch.h
View File

@ -13,6 +13,9 @@
/* All the supported PCH ioctls */
enum pch_req_t {
/* Returns HDA config info if Azalia V1CTL enabled, -ENOENT if not */
PCH_REQ_HDA_CONFIG,
PCH_REQ_TEST1, /* Test requests for sandbox driver */
PCH_REQ_TEST2,
PCH_REQ_TEST3,