From: Hans de Goede <hdegoede@redhat.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Darren Hart <dvhart@infradead.org>,
Andy Shevchenko <andy@infradead.org>,
Luis Chamberlain <mcgrof@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>,
Jonathan Corbet <corbet@lwn.net>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>,
Peter Jones <pjones@redhat.com>, Dave Olsthoorn <dave@bewaar.me>,
x86@kernel.org, platform-driver-x86@vger.kernel.org,
linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, linux-input@vger.kernel.org,
Andy Shevchenko <andy.shevchenko@gmail.com>
Subject: [PATCH v10 09/10] platform/x86: touchscreen_dmi: Add EFI embedded firmware info support
Date: Tue, 10 Dec 2019 12:51:16 +0100 [thread overview]
Message-ID: <20191210115117.303935-10-hdegoede@redhat.com> (raw)
In-Reply-To: <20191210115117.303935-1-hdegoede@redhat.com>
Sofar we have been unable to get permission from the vendors to put the
firmware for touchscreens listed in touchscreen_dmi in linux-firmware.
Some of the tablets with such a touchscreen have a touchscreen driver, and
thus a copy of the firmware, as part of their EFI code.
This commit adds the necessary info for the new EFI embedded-firmware code
to extract these firmwares, making the touchscreen work OOTB without the
user needing to manually add the firmware.
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v7:
- Remove adding of PROPERTY_ENTRY_BOOL("efi-embedded-firmware"), to touchscreen
props, as this is no longer necessary
Changes in v6:
- Switch from crc sums to SHA256 hashes for the firmware hashes
---
drivers/firmware/efi/embedded-firmware.c | 3 ++
drivers/platform/x86/Kconfig | 1 +
drivers/platform/x86/touchscreen_dmi.c | 41 +++++++++++++++++++++++-
include/linux/efi_embedded_fw.h | 2 ++
4 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/efi/embedded-firmware.c b/drivers/firmware/efi/embedded-firmware.c
index 6668ad48133f..9592c6d12840 100644
--- a/drivers/firmware/efi/embedded-firmware.c
+++ b/drivers/firmware/efi/embedded-firmware.c
@@ -21,6 +21,9 @@ EXPORT_SYMBOL_GPL(efi_embedded_fw_list);
static bool checked_for_fw;
static const struct dmi_system_id * const embedded_fw_table[] = {
+#ifdef CONFIG_TOUCHSCREEN_DMI
+ touchscreen_dmi_table,
+#endif
NULL
};
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 27d5b40fb717..a65f4ffb289a 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -1253,6 +1253,7 @@ config INTEL_TURBO_MAX_3
config TOUCHSCREEN_DMI
bool "DMI based touchscreen configuration info"
depends on ACPI && DMI && I2C=y && TOUCHSCREEN_SILEAD
+ select EFI_EMBEDDED_FIRMWARE if EFI
---help---
Certain ACPI based tablets with e.g. Silead or Chipone touchscreens
do not have enough data in ACPI tables for the touchscreen driver to
diff --git a/drivers/platform/x86/touchscreen_dmi.c b/drivers/platform/x86/touchscreen_dmi.c
index 72205771d03d..4449e4c0b26b 100644
--- a/drivers/platform/x86/touchscreen_dmi.c
+++ b/drivers/platform/x86/touchscreen_dmi.c
@@ -11,12 +11,15 @@
#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/dmi.h>
+#include <linux/efi_embedded_fw.h>
#include <linux/i2c.h>
#include <linux/notifier.h>
#include <linux/property.h>
#include <linux/string.h>
struct ts_dmi_data {
+ /* The EFI embedded-fw code expects this to be the first member! */
+ struct efi_embedded_fw_desc embedded_fw;
const char *acpi_name;
const struct property_entry *properties;
};
@@ -64,6 +67,15 @@ static const struct property_entry chuwi_hi8_pro_props[] = {
};
static const struct ts_dmi_data chuwi_hi8_pro_data = {
+ .embedded_fw = {
+ .name = "silead/gsl3680-chuwi-hi8-pro.fw",
+ .prefix = { 0xf0, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00 },
+ .length = 39864,
+ .sha256 = { 0xc0, 0x88, 0xc5, 0xef, 0xd1, 0x70, 0x77, 0x59,
+ 0x4e, 0xe9, 0xc4, 0xd8, 0x2e, 0xcd, 0xbf, 0x95,
+ 0x32, 0xd9, 0x03, 0x28, 0x0d, 0x48, 0x9f, 0x92,
+ 0x35, 0x37, 0xf6, 0x8b, 0x2a, 0xe4, 0x73, 0xff },
+ },
.acpi_name = "MSSL1680:00",
.properties = chuwi_hi8_pro_props,
};
@@ -181,6 +193,15 @@ static const struct property_entry cube_iwork8_air_props[] = {
};
static const struct ts_dmi_data cube_iwork8_air_data = {
+ .embedded_fw = {
+ .name = "silead/gsl3670-cube-iwork8-air.fw",
+ .prefix = { 0xf0, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00 },
+ .length = 38808,
+ .sha256 = { 0xff, 0x62, 0x2d, 0xd1, 0x8a, 0x78, 0x04, 0x7b,
+ 0x33, 0x06, 0xb0, 0x4f, 0x7f, 0x02, 0x08, 0x9c,
+ 0x96, 0xd4, 0x9f, 0x04, 0xe1, 0x47, 0x25, 0x25,
+ 0x60, 0x77, 0x41, 0x33, 0xeb, 0x12, 0x82, 0xfc },
+ },
.acpi_name = "MSSL1680:00",
.properties = cube_iwork8_air_props,
};
@@ -390,6 +411,15 @@ static const struct property_entry onda_v80_plus_v3_props[] = {
};
static const struct ts_dmi_data onda_v80_plus_v3_data = {
+ .embedded_fw = {
+ .name = "silead/gsl3676-onda-v80-plus-v3.fw",
+ .prefix = { 0xf0, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00 },
+ .length = 37224,
+ .sha256 = { 0x8f, 0xbd, 0x8f, 0x0c, 0x6b, 0xba, 0x5b, 0xf5,
+ 0xa3, 0xc7, 0xa3, 0xc0, 0x4f, 0xcd, 0xdf, 0x32,
+ 0xcc, 0xe4, 0x70, 0xd6, 0x46, 0x9c, 0xd7, 0xa7,
+ 0x4b, 0x82, 0x3f, 0xab, 0xc7, 0x90, 0xea, 0x23 },
+ },
.acpi_name = "MSSL1680:00",
.properties = onda_v80_plus_v3_props,
};
@@ -456,6 +486,15 @@ static const struct property_entry pipo_w2s_props[] = {
};
static const struct ts_dmi_data pipo_w2s_data = {
+ .embedded_fw = {
+ .name = "silead/gsl1680-pipo-w2s.fw",
+ .prefix = { 0xf0, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00 },
+ .length = 39072,
+ .sha256 = { 0xd0, 0x58, 0xc4, 0x7d, 0x55, 0x2d, 0x62, 0x18,
+ 0xd1, 0x6a, 0x71, 0x73, 0x0b, 0x3f, 0xbe, 0x60,
+ 0xbb, 0x45, 0x8c, 0x52, 0x27, 0xb7, 0x18, 0xf4,
+ 0x31, 0x00, 0x6a, 0x49, 0x76, 0xd8, 0x7c, 0xd3 },
+ },
.acpi_name = "MSSL1680:00",
.properties = pipo_w2s_props,
};
@@ -642,7 +681,7 @@ static const struct ts_dmi_data trekstor_surftab_wintron70_data = {
};
/* NOTE: Please keep this table sorted alphabetically */
-static const struct dmi_system_id touchscreen_dmi_table[] = {
+const struct dmi_system_id touchscreen_dmi_table[] = {
{
/* Chuwi Hi8 */
.driver_data = (void *)&chuwi_hi8_data,
diff --git a/include/linux/efi_embedded_fw.h b/include/linux/efi_embedded_fw.h
index 5a8ae662911b..c4737fd07e33 100644
--- a/include/linux/efi_embedded_fw.h
+++ b/include/linux/efi_embedded_fw.h
@@ -34,6 +34,8 @@ struct efi_embedded_fw_desc {
u8 sha256[32];
};
+extern const struct dmi_system_id touchscreen_dmi_table[];
+
int efi_get_embedded_fw(const char *name, void **dat, size_t *sz);
#endif
--
2.23.0
next prev parent reply other threads:[~2019-12-10 11:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 11:51 [PATCH v10 00/10] efi/firmware/platform-x86: Add EFI embedded fw support Hans de Goede
2019-12-10 11:51 ` [PATCH v10 01/10] efi: Export boot-services code and data as debugfs-blobs Hans de Goede
2019-12-10 11:51 ` [PATCH v10 02/10] efi: Add embedded peripheral firmware support Hans de Goede
2019-12-10 11:51 ` [PATCH v10 03/10] firmware: Rename FW_OPT_NOFALLBACK to FW_OPT_NOFALLBACK_SYSFS Hans de Goede
2019-12-10 11:51 ` [PATCH v10 04/10] firmware: Add new platform fallback mechanism and firmware_request_platform() Hans de Goede
2019-12-10 11:51 ` [PATCH v10 05/10] test_firmware: add support for firmware_request_platform Hans de Goede
2020-01-06 21:33 ` Luis Chamberlain
2020-01-10 19:48 ` Hans de Goede
2019-12-10 11:51 ` [PATCH v10 06/10] selftests: firmware: Add firmware_request_platform tests Hans de Goede
2019-12-10 11:51 ` [PATCH v10 07/10] Input: silead - Switch to firmware_request_platform for retreiving the fw Hans de Goede
2019-12-10 11:51 ` [PATCH v10 08/10] Input: icn8505 " Hans de Goede
2019-12-10 11:51 ` Hans de Goede [this message]
2019-12-10 11:51 ` [PATCH v10 10/10] platform/x86: touchscreen_dmi: Add info for the Chuwi Vi8 Plus tablet Hans de Goede
2020-01-03 11:27 ` [PATCH v10 00/10] efi/firmware/platform-x86: Add EFI embedded fw support Hans de Goede
2020-01-03 11:36 ` Ard Biesheuvel
2020-01-06 21:35 ` Luis Chamberlain
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