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From 706e3aa6b7f08ad2616f436c4a93300b048d808d Mon Sep 17 00:00:00 2001 |
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From: Hans de Goede <hdegoede@redhat.com> |
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Date: Mon, 27 Aug 2018 09:45:44 +0200 |
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Subject: [PATCH 061/145] ACPI / LPSS: Add alternative ACPI HIDs for Cherry |
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Trail DMA controllers |
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|
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[ Upstream commit 240714061c58e6b1abfb3322398a7634151c06cb ] |
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|
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Bay and Cherry Trail DSTDs represent a different set of devices depending |
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on which OS the device think it is booting. One set of decices for Windows |
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and another set of devices for Android which targets the Android-x86 Linux |
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kernel fork (which e.g. used to have its own display driver instead of |
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using the i915 driver). |
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|
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Which set of devices we are actually going to get is out of our control, |
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this is controlled by the ACPI OSID variable, which gets either set through |
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an EFI setup option, or sometimes is autodetected. So we need to support |
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both. |
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|
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This commit adds support for the 80862286 and 808622C0 ACPI HIDs which we |
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get for the first resp. second DMA controller on Cherry Trail devices when |
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OSID is set to Android. |
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|
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Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
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Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Signed-off-by: Sasha Levin <sashal@kernel.org> |
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--- |
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drivers/acpi/acpi_lpss.c | 2 ++ |
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1 file changed, 2 insertions(+) |
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|
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diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c |
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index bf64cfa30feb..969bf8d515c0 100644 |
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--- a/drivers/acpi/acpi_lpss.c |
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+++ b/drivers/acpi/acpi_lpss.c |
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@@ -327,9 +327,11 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = { |
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{ "INT33FC", }, |
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|
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/* Braswell LPSS devices */ |
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+ { "80862286", LPSS_ADDR(lpss_dma_desc) }, |
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{ "80862288", LPSS_ADDR(bsw_pwm_dev_desc) }, |
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{ "8086228A", LPSS_ADDR(bsw_uart_dev_desc) }, |
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{ "8086228E", LPSS_ADDR(bsw_spi_dev_desc) }, |
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+ { "808622C0", LPSS_ADDR(lpss_dma_desc) }, |
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{ "808622C1", LPSS_ADDR(bsw_i2c_dev_desc) }, |
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|
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/* Broadwell LPSS devices */ |
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-- |
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2.19.1 |
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