From 4ec567b8dda20d0129b60da63a472246f09e03d4 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Wed, 18 Jan 2017 10:29:15 -0800 Subject: platform/x86: Support Turbo Boost Max 3.0 for non HWP systems On platforms supporting Intel Turbo Boost Max Technology 3.0, the maximum turbo frequencies (turbo ratio) of some cores in a CPU package may be higher than the other cores in the same package. In that case, better performance can be achieved by making the scheduler prefer to run tasks on the CPUs with higher max turbo frequencies. On Intel® Broadwell Xeon systems, it is optional to turn on HWP (Hardware P-States). When HWP is not turned on, the BIOS doesn't present required CPPC (Collaborative Processor Performance Control) tables. This table is used to get the per CPU core maximum performance ratio and inform scheduler (in cpufreq/intel_pstate driver). On such systems the maximum performance ratio can be read via over clocking (OC) mailbox interface for each CPU. This interface is not architectural and can change for every model of processors. This driver reads maximum performance ratio of each CPU and set up the scheduler priority metrics. In this way scheduler can prefer CPU with higher performance to schedule tasks. Signed-off-by: Srinivas Pandruvada Signed-off-by: Darren Hart --- drivers/platform/x86/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/platform/x86/Makefile') diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index d4111f0f8a78..cde7b4fdf5d6 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -76,3 +76,4 @@ obj-$(CONFIG_INTEL_TELEMETRY) += intel_telemetry_core.o \ obj-$(CONFIG_INTEL_PMC_CORE) += intel_pmc_core.o obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o obj-$(CONFIG_MLX_CPLD_PLATFORM) += mlxcpld-hotplug.o +obj-$(CONFIG_INTEL_TURBO_MAX_3) += intel_turbo_max_3.o -- cgit v1.2.3 From cef9dd85acd79449d1a5a65543d10f18cb68e56c Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 23 Jan 2017 18:35:30 +0100 Subject: platform/x86: add support for devices with Silead touchscreens On ACPI based tablets, the ACPI touchscreen node only contains info on the gpio and the irq, and is missing any info on the axis. This info is expected to be built into the tablet model specific version of the driver shipped with the os-image for the device. Add support for getting the missing info from a table built into the driver, using dmi data to identify which entry of the table to use and add info for the CUBE iwork8 Air and Jumper EZpad mini3 tablets on which this code was tested / developed. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=187531 Signed-off-by: Hans de Goede [dmitry.torokhov@gmail.com: Move to platform/x86] Signed-off-by: Dmitry Torokhov Acked-by: Andy Shevchenko [andy: fixed merge conflict] Signed-off-by: Andy Shevchenko --- MAINTAINERS | 8 +++ drivers/platform/x86/Kconfig | 11 +++ drivers/platform/x86/Makefile | 1 + drivers/platform/x86/silead_dmi.c | 136 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 156 insertions(+) create mode 100644 drivers/platform/x86/silead_dmi.c (limited to 'drivers/platform/x86/Makefile') diff --git a/MAINTAINERS b/MAINTAINERS index 5f10c28b2e15..88cbc17d71c8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11271,6 +11271,14 @@ F: drivers/media/usb/siano/ F: drivers/media/usb/siano/ F: drivers/media/mmc/siano/ +SILEAD TOUCHSCREEN DRIVER +M: Hans de Goede +L: linux-input@vger.kernel.org +L: platform-driver-x86@vger.kernel.org +S: Maintained +F: drivers/input/touchscreen/silead.c +F: drivers/platform/x86/silead_dmi.c + SIMPLEFB FB DRIVER M: Hans de Goede L: linux-fbdev@vger.kernel.org diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index d9748a881798..cfa842daa270 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -1084,4 +1084,15 @@ config INTEL_TURBO_MAX_3 This driver is only required when the system is not using Hardware P-States (HWP). In HWP mode, priority can be read from ACPI tables. +config SILEAD_DMI + bool "Tablets with Silead touchscreens" + depends on ACPI && DMI && I2C && INPUT + ---help--- + Certain ACPI based tablets with Silead touchscreens do not have + enough data in ACPI tables for the touchscreen driver to handle + the touchscreen properly, as OEMs expected the data to be baked + into the tablet model specific version of the driver shipped + with the OS-image for the device. This option supplies the missing + information. Enable this for x86 tablets with Silead touchscreens. + endif # X86_PLATFORM_DEVICES diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index cde7b4fdf5d6..b689be13ade0 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -66,6 +66,7 @@ obj-$(CONFIG_INTEL_SMARTCONNECT) += intel-smartconnect.o obj-$(CONFIG_PVPANIC) += pvpanic.o obj-$(CONFIG_ALIENWARE_WMI) += alienware-wmi.o obj-$(CONFIG_INTEL_PMC_IPC) += intel_pmc_ipc.o +obj-$(CONFIG_SILEAD_DMI) += silead_dmi.o obj-$(CONFIG_SURFACE_PRO3_BUTTON) += surfacepro3_button.o obj-$(CONFIG_SURFACE_3_BUTTON) += surface3_button.o obj-$(CONFIG_INTEL_PUNIT_IPC) += intel_punit_ipc.o diff --git a/drivers/platform/x86/silead_dmi.c b/drivers/platform/x86/silead_dmi.c new file mode 100644 index 000000000000..02e11fdbf375 --- /dev/null +++ b/drivers/platform/x86/silead_dmi.c @@ -0,0 +1,136 @@ +/* + * Silead touchscreen driver DMI based configuration code + * + * Copyright (c) 2017 Red Hat Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Red Hat authors: + * Hans de Goede + */ + +#include +#include +#include +#include +#include +#include +#include + +struct silead_ts_dmi_data { + const char *acpi_name; + struct property_entry *properties; +}; + +static struct property_entry cube_iwork8_air_props[] = { + PROPERTY_ENTRY_U32("touchscreen-size-x", 1660), + PROPERTY_ENTRY_U32("touchscreen-size-y", 900), + PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"), + PROPERTY_ENTRY_STRING("firmware-name", "gsl3670-cube-iwork8-air.fw"), + PROPERTY_ENTRY_U32("silead,max-fingers", 10), + { } +}; + +static const struct silead_ts_dmi_data cube_iwork8_air_data = { + .acpi_name = "MSSL1680:00", + .properties = cube_iwork8_air_props, +}; + +static struct property_entry jumper_ezpad_mini3_props[] = { + PROPERTY_ENTRY_U32("touchscreen-size-x", 1700), + PROPERTY_ENTRY_U32("touchscreen-size-y", 1150), + PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"), + PROPERTY_ENTRY_STRING("firmware-name", "gsl3676-jumper-ezpad-mini3.fw"), + PROPERTY_ENTRY_U32("silead,max-fingers", 10), + { } +}; + +static const struct silead_ts_dmi_data jumper_ezpad_mini3_data = { + .acpi_name = "MSSL1680:00", + .properties = jumper_ezpad_mini3_props, +}; + +static const struct dmi_system_id silead_ts_dmi_table[] = { + { + /* CUBE iwork8 Air */ + .driver_data = (void *)&cube_iwork8_air_data, + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "cube"), + DMI_MATCH(DMI_PRODUCT_NAME, "i1-TF"), + DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"), + }, + }, + { + /* Jumper EZpad mini3 */ + .driver_data = (void *)&jumper_ezpad_mini3_data, + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Insyde"), + /* jumperx.T87.KFBNEEA02 with the version-nr dropped */ + DMI_MATCH(DMI_BIOS_VERSION, "jumperx.T87.KFBNEEA"), + }, + }, + { }, +}; + +static void silead_ts_dmi_add_props(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + const struct dmi_system_id *dmi_id; + const struct silead_ts_dmi_data *ts_data; + int error; + + dmi_id = dmi_first_match(silead_ts_dmi_table); + if (!dmi_id) + return; + + ts_data = dmi_id->driver_data; + if (has_acpi_companion(dev) && + !strncmp(ts_data->acpi_name, client->name, I2C_NAME_SIZE)) { + error = device_add_properties(dev, ts_data->properties); + if (error) + dev_err(dev, "failed to add properties: %d\n", error); + } +} + +static int silead_ts_dmi_notifier_call(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct device *dev = data; + + switch (action) { + case BUS_NOTIFY_ADD_DEVICE: + silead_ts_dmi_add_props(dev); + break; + + default: + break; + } + + return 0; +} + +static struct notifier_block silead_ts_dmi_notifier = { + .notifier_call = silead_ts_dmi_notifier_call, +}; + +static int __init silead_ts_dmi_init(void) +{ + int error; + + error = bus_register_notifier(&i2c_bus_type, &silead_ts_dmi_notifier); + if (error) + pr_err("%s: failed to register i2c bus notifier: %d\n", + __func__, error); + + return error; +} + +/* + * We are registering out notifier after i2c core is initialized and i2c bus + * itself is ready (which happens at postcore initcall level), but before + * ACPI starts enumerating devices (at subsys initcall level). + */ +arch_initcall(silead_ts_dmi_init); -- cgit v1.2.3