Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Andy Shevchenko <andy.shevchenko@gmail.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        Hans de Goede <hdegoede@redhat.com>,
        Mark Brown <broonie@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.10 071/102] ASoC: Intel: Add DMI quirk table to soc_intel_is_byt_cr()
Date:   Fri,  5 Mar 2021 13:21:30 +0100
Message-Id: <20210305120906.771132198@linuxfoundation.org>
In-Reply-To: <20210305120903.276489876@linuxfoundation.org>
References: <20210305120903.276489876@linuxfoundation.org>
User-Agent: quilt/0.66
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 8ade6d8b02b1ead741bd4f6c42921035caab6560 ]

Some Bay Trail systems:
1. Use a non CR version of the Bay Trail SoC
2. Contain at least 6 interrupt resources so that the
   platform_get_resource(pdev, IORESOURCE_IRQ, 5) check to workaround
   non CR systems which list their IPC IRQ at index 0 despite being
   non CR does not work
3. Despite 1. and 2. still have their IPC IRQ at index 0 rather then 5

Add a DMI quirk table to check for the few known models with this issue,
so that the right IPC IRQ index is used on these systems.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210120214957.140232-5-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/intel/common/soc-intel-quirks.h | 25 +++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/sound/soc/intel/common/soc-intel-quirks.h b/sound/soc/intel/common/soc-intel-quirks.h
index b07df3059926..a93987ab7f4d 100644
--- a/sound/soc/intel/common/soc-intel-quirks.h
+++ b/sound/soc/intel/common/soc-intel-quirks.h
@@ -11,6 +11,7 @@
 
 #if IS_ENABLED(CONFIG_X86)
 
+#include <linux/dmi.h>
 #include <asm/cpu_device_id.h>
 #include <asm/intel-family.h>
 #include <asm/iosf_mbi.h>
@@ -38,12 +39,36 @@ SOC_INTEL_IS_CPU(cml, KABYLAKE_L);
 
 static inline bool soc_intel_is_byt_cr(struct platform_device *pdev)
 {
+	/*
+	 * List of systems which:
+	 * 1. Use a non CR version of the Bay Trail SoC
+	 * 2. Contain at least 6 interrupt resources so that the
+	 *    platform_get_resource(pdev, IORESOURCE_IRQ, 5) check below
+	 *    succeeds
+	 * 3. Despite 1. and 2. still have their IPC IRQ at index 0 rather then 5
+	 *
+	 * This needs to be here so that it can be shared between the SST and
+	 * SOF drivers. We rely on the compiler to optimize this out in files
+	 * where soc_intel_is_byt_cr is not used.
+	 */
+	static const struct dmi_system_id force_bytcr_table[] = {
+		{	/* Lenovo Yoga Tablet 2 series */
+			.matches = {
+				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+				DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"),
+			},
+		},
+		{}
+	};
 	struct device *dev = &pdev->dev;
 	int status = 0;
 
 	if (!soc_intel_is_byt())
 		return false;
 
+	if (dmi_check_system(force_bytcr_table))
+		return true;
+
 	if (iosf_mbi_available()) {
 		u32 bios_status;
 
-- 
2.30.1