/*
* ACPI DSDT table doesn't have correct PCI interrupt routing information
* for some devices, so here we have a kernel workaround to fix this issue.
* The workaround can be easily removed by not appending "vlv2" paramerter
* to kernel command line.
*/
static int __init vlv2_pci_irq_fixup(void)
{
/* HACK: intel_mid_identify_cpu() is not set yet */
/* More hack: do cpuid instruction. This will be done here (helper is_valleyview) for now
* as temp w/a until reworked function is provided from Bin Gao.
*/
if (is_valleyview()) {
pr_info("VLV2: fix up PCI interrupt routing\n");
pcibios_enable_irq = vlv2_pci_enable_irq;
}
return 0;
}
static int snd_cht_mc_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = snd_soc_cards[0].soc_card;
struct snd_soc_acpi_mach *mach;
struct cht_mc_private *drv;
const char *i2c_name = NULL;
bool found = false;
bool is_bytcr = false;
int dai_index = 0;
int ret_val = 0;
int i;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
if (!drv)
return -ENOMEM;
mach = (&pdev->dev)->platform_data;
for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
if (acpi_dev_found(snd_soc_cards[i].codec_id) &&
(!strncmp(snd_soc_cards[i].codec_id, mach->id, 8))) {
dev_dbg(&pdev->dev,
"found codec %s\n", snd_soc_cards[i].codec_id);
card = snd_soc_cards[i].soc_card;
drv->acpi_card = &snd_soc_cards[i];
found = true;
break;
}
}
if (!found) {
dev_err(&pdev->dev, "No matching HID found in supported list\n");
return -ENODEV;
}
card->dev = &pdev->dev;
sprintf(drv->codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
/* set correct codec name */
for (i = 0; i < ARRAY_SIZE(cht_dailink); i++)
if (!strcmp(card->dai_link[i].codec_name, "i2c-10EC5645:00")) {
card->dai_link[i].codec_name = drv->codec_name;
dai_index = i;
}
/* fixup codec name based on HID */
i2c_name = acpi_dev_get_first_match_name(mach->id, NULL, -1);
if (i2c_name) {
snprintf(cht_rt5645_codec_name, sizeof(cht_rt5645_codec_name),
"%s%s", "i2c-", i2c_name);
cht_dailink[dai_index].codec_name = cht_rt5645_codec_name;
}
/*
* swap SSP0 if bytcr is detected
* (will be overridden if DMI quirk is detected)
*/
if (is_valleyview()) {
if (mach->mach_params.acpi_ipc_irq_index == 0)
is_bytcr = true;
}
if (is_bytcr) {
/*
* Baytrail CR platforms may have CHAN package in BIOS, try
* to find relevant routing quirk based as done on Windows
* platforms. We have to read the information directly from the
* BIOS, at this stage the card is not created and the links
* with the codec driver/pdata are non-existent
*/
struct acpi_chan_package chan_package;
/* format specified: 2 64-bit integers */
struct acpi_buffer format = {sizeof("NN"), "NN"};
struct acpi_buffer state = {0, NULL};
struct snd_soc_acpi_package_context pkg_ctx;
bool pkg_found = false;
state.length = sizeof(chan_package);
state.pointer = &chan_package;
pkg_ctx.name = "CHAN";
pkg_ctx.length = 2;
pkg_ctx.format = &format;
pkg_ctx.state = &state;
pkg_ctx.data_valid = false;
pkg_found = snd_soc_acpi_find_package_from_hid(mach->id,
&pkg_ctx);
if (pkg_found) {
if (chan_package.aif_value == 1) {
dev_info(&pdev->dev, "BIOS Routing: AIF1 connected\n");
cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF1;
} else if (chan_package.aif_value == 2) {
dev_info(&pdev->dev, "BIOS Routing: AIF2 connected\n");
cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF2;
} else {
dev_info(&pdev->dev, "BIOS Routing isn't valid, ignored\n");
pkg_found = false;
}
}
if (!pkg_found) {
/* no BIOS indications, assume SSP0-AIF2 connection */
cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF2;
}
}
/* check quirks before creating card */
dmi_check_system(cht_rt5645_quirk_table);
log_quirks(&pdev->dev);
if ((cht_rt5645_quirk & CHT_RT5645_SSP2_AIF2) ||
(cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {
/* fixup codec aif name */
snprintf(cht_rt5645_codec_aif_name,
sizeof(cht_rt5645_codec_aif_name),
"%s", "rt5645-aif2");
cht_dailink[dai_index].codec_dai_name =
cht_rt5645_codec_aif_name;
}
if ((cht_rt5645_quirk & CHT_RT5645_SSP0_AIF1) ||
(cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {
/* fixup cpu dai name name */
snprintf(cht_rt5645_cpu_dai_name,
sizeof(cht_rt5645_cpu_dai_name),
"%s", "ssp0-port");
cht_dailink[dai_index].cpu_dai_name =
cht_rt5645_cpu_dai_name;
}
drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
if (IS_ERR(drv->mclk)) {
dev_err(&pdev->dev,
"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
PTR_ERR(drv->mclk));
return PTR_ERR(drv->mclk);
}
snd_soc_card_set_drvdata(card, drv);
ret_val = devm_snd_soc_register_card(&pdev->dev, card);
if (ret_val) {
dev_err(&pdev->dev,
"snd_soc_register_card failed %d\n", ret_val);
return ret_val;
}
platform_set_drvdata(pdev, card);
return ret_val;
}
