linux-kernel - [PATCH] acpi/x86: enable touchscreen on Dell Venue Pro 7139

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Message-Id: <1528582686-18577-1-git-send-email-tristiancelestin@fastmail.com>
Date:   Sat,  9 Jun 2018 18:18:06 -0400
From:   Tristian Celestin <tristiancelestin@...tmail.com>
To:     rjw@...ysocki.net
Cc:     lenb@...nel.org, andriy.shevchenko@...ux.intel.com,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tristian Celestin <tristiancelestin@...tmail.com>
Subject: [PATCH] acpi/x86: enable touchscreen on Dell Venue Pro 7139

Permanently enable the SYNA7500 touchscreen device on the Dell
Venue Pro 7139. The DSDT hides the touchscreen ACPI device on
the 7139 in the same fashion as the 7130, and needs to
be enabled in the same way.

Signed-off-by: Tristian Celestin <tristiancelestin@...tmail.com>
---
 drivers/acpi/x86/utils.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index ec5b0f1..3a13b2a 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -62,14 +62,20 @@ struct always_present_id {
 	 */
 	ENTRY("INT0002", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), {}),
 	/*
-	 * On the Dell Venue 11 Pro 7130 the DSDT hides the touchscreen ACPI
-	 * device until a certain time after _SB.PCI0.GFX0.LCD.LCD1._ON gets
-	 * called has passed *and* _STA has been called at least 3 times since.
+	 * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides
+	 * the touchscreen ACPI device until a certain time
+	 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed
+	 * *and* _STA has been called at least 3 times since.
 	 */
 	ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_ULT), {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
 	      }),
+	ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_ULT), {
+		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"),
+	      }),
+
 	/*
 	 * The GPD win BIOS dated 20170221 has disabled the accelerometer, the
 	 * drivers sometimes cause crashes under Windows and this is how the
-- 
1.8.3.1