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platform/chrome: Cleanups and improvements
* Use deferred probing on Chrome OS platforms for the i2c device registration. This fixes a long-standing race of initialization of touchpad/screen on Chromebooks. * Added in platform device registration for pstore console on supported hardware * Misc smaller fixes (__initdata, module exit cleanup, etc) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJS6WRQAAoJEIwa5zzehBx39wUP/iJNehhevdHes2xStG+7IxUF rSdHPgw8xLCtVSDYShxQbC5AojPbtE/g5UQAq1GGd0WYnWHlRiUCVlv6f5PpbuUL K/CClarjfOqmAaPHpyxg6TOywVTXuKZZvMPqila04YPfPx8AnVYn8Itgdf4TNiOv QXNyObGAszy5bVjMIYfmHytkKjNYqwbEctG+HTV8qFHlYbBPMNz47yUMPSZ5WDVQ dMIARR0AKQW70rHkmBTxcL0xMeKNlUZeuA58/PmNMa6sy7vbl4192fXKd/6dK4Qm 6JDckdyiJvE1iW24fRBTTzuDSBo6q+4cSL0nKn1l0T0D/asTBta99Rse/+886B47 fbmCLgdShuMnd11axcBRirj+OiZDmFOFcMbIO8z8lOR+TsoLcfLAiAOyzm4sUy0v FI7k3xeSRy+oELNkRXrciR7yYP/Zt2YeErL3qkMRy8BqDbIMpUb+FhdeZ+4uITXp 40u+Mwo5E4Pci5U1DKuBQpNW//inUN8F52Y4WG1RI5asBwo9i/zTm0ymSAb8+a4v C8Yh0/mJUqr4aVct+NIcX67EotbqsoJ3FlEbfL2O1TmmE3NgfJ9BQ5D6xqmUzhQe 8WnMI7KZ3AwmARcigvWhfya/lilvE9e0IO95xKV/UsjrIwDWDqoA04xvkXhLOVMX TPsq3plg9uRPFVRR0idm =nO2m -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform Pull chrome platform cleanups and improvements from Olof Johansson: - Use deferred probing on Chrome OS platforms for the i2c device registration. This fixes a long-standing race of initialization of touchpad/screen on Chromebooks. - Added in platform device registration for pstore console on supported hardware - Misc smaller fixes (__initdata, module exit cleanup, etc) * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform: platform/chrome: unregister platform driver/device when module exit platform/chrome: Make i2c_adapter_names static platform/chrome: chromeos_laptop - fix incorrect placement of __initdata tag platform/chrome: chromeos_laptop - Use deferred probing platform/chrome: chromeos_laptop - Restructure device associations platform/chrome: Add pstore platform_device
This commit is contained in:
Linus Torvalds
commit
e9e352e910
@ -25,4 +25,18 @@ config CHROMEOS_LAPTOP
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If you have a supported Chromebook, choose Y or M here.
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The module will be called chromeos_laptop.
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config CHROMEOS_PSTORE
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tristate "Chrome OS pstore support"
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---help---
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This module instantiates the persistent storage on x86 ChromeOS
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devices. It can be used to store away console logs and crash
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information across reboots.
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The range of memory used is 0xf00000-0x1000000, traditionally
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the memory used to back VGA controller memory.
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If you have a supported Chromebook, choose Y or M here.
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The module will be called chromeos_pstore.
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endif # CHROMEOS_PLATFORMS
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@ -1,2 +1,3 @@
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obj-$(CONFIG_CHROMEOS_LAPTOP) += chromeos_laptop.o
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obj-$(CONFIG_CHROMEOS_PSTORE) += chromeos_pstore.o
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@ -27,6 +27,7 @@
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#define ATMEL_TP_I2C_ADDR 0x4b
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#define ATMEL_TP_I2C_BL_ADDR 0x25
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@ -40,7 +41,7 @@ static struct i2c_client *als;
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static struct i2c_client *tp;
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static struct i2c_client *ts;
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const char *i2c_adapter_names[] = {
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static const char *i2c_adapter_names[] = {
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"SMBus I801 adapter",
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"i915 gmbus vga",
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"i915 gmbus panel",
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@ -53,20 +54,33 @@ enum i2c_adapter_type {
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I2C_ADAPTER_PANEL,
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};
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static struct i2c_board_info __initdata cyapa_device = {
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struct i2c_peripheral {
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int (*add)(enum i2c_adapter_type type);
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enum i2c_adapter_type type;
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};
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#define MAX_I2C_PERIPHERALS 3
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struct chromeos_laptop {
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struct i2c_peripheral i2c_peripherals[MAX_I2C_PERIPHERALS];
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};
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static struct chromeos_laptop *cros_laptop;
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static struct i2c_board_info cyapa_device = {
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I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR),
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.flags = I2C_CLIENT_WAKE,
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};
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static struct i2c_board_info __initdata isl_als_device = {
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static struct i2c_board_info isl_als_device = {
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I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR),
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};
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static struct i2c_board_info __initdata tsl2583_als_device = {
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static struct i2c_board_info tsl2583_als_device = {
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I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR),
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};
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static struct i2c_board_info __initdata tsl2563_als_device = {
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static struct i2c_board_info tsl2563_als_device = {
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I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR),
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};
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@ -89,7 +103,7 @@ static struct mxt_platform_data atmel_224s_tp_platform_data = {
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.config_length = 0,
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};
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static struct i2c_board_info __initdata atmel_224s_tp_device = {
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static struct i2c_board_info atmel_224s_tp_device = {
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I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR),
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.platform_data = &atmel_224s_tp_platform_data,
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.flags = I2C_CLIENT_WAKE,
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@ -110,13 +124,13 @@ static struct mxt_platform_data atmel_1664s_platform_data = {
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.config_length = 0,
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};
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static struct i2c_board_info __initdata atmel_1664s_device = {
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static struct i2c_board_info atmel_1664s_device = {
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I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR),
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.platform_data = &atmel_1664s_platform_data,
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.flags = I2C_CLIENT_WAKE,
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};
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static struct i2c_client __init *__add_probed_i2c_device(
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static struct i2c_client *__add_probed_i2c_device(
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const char *name,
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int bus,
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struct i2c_board_info *info,
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@ -169,7 +183,7 @@ static struct i2c_client __init *__add_probed_i2c_device(
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return client;
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}
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static int __init __find_i2c_adap(struct device *dev, void *data)
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static int __find_i2c_adap(struct device *dev, void *data)
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{
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const char *name = data;
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static const char *prefix = "i2c-";
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@ -180,7 +194,7 @@ static int __init __find_i2c_adap(struct device *dev, void *data)
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return (strncmp(adapter->name, name, strlen(name)) == 0);
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}
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static int __init find_i2c_adapter_num(enum i2c_adapter_type type)
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static int find_i2c_adapter_num(enum i2c_adapter_type type)
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{
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struct device *dev = NULL;
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struct i2c_adapter *adapter;
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@ -189,8 +203,9 @@ static int __init find_i2c_adapter_num(enum i2c_adapter_type type)
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dev = bus_find_device(&i2c_bus_type, NULL, (void *)name,
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__find_i2c_adap);
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if (!dev) {
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pr_err("%s: i2c adapter %s not found on system.\n", __func__,
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name);
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/* Adapters may appear later. Deferred probing will retry */
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pr_notice("%s: i2c adapter %s not found on system.\n", __func__,
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name);
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return -ENODEV;
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}
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adapter = to_i2c_adapter(dev);
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@ -205,7 +220,7 @@ static int __init find_i2c_adapter_num(enum i2c_adapter_type type)
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* Returns NULL if no devices found.
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* See Documentation/i2c/instantiating-devices for more information.
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*/
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static __init struct i2c_client *add_probed_i2c_device(
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static struct i2c_client *add_probed_i2c_device(
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const char *name,
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enum i2c_adapter_type type,
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struct i2c_board_info *info,
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@ -222,7 +237,7 @@ static __init struct i2c_client *add_probed_i2c_device(
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* info->addr.
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* Returns NULL if no device found.
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*/
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static __init struct i2c_client *add_i2c_device(const char *name,
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static struct i2c_client *add_i2c_device(const char *name,
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enum i2c_adapter_type type,
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struct i2c_board_info *info)
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{
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@ -233,161 +248,259 @@ static __init struct i2c_client *add_i2c_device(const char *name,
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addr_list);
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}
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static struct i2c_client __init *add_smbus_device(const char *name,
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struct i2c_board_info *info)
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static int setup_cyapa_tp(enum i2c_adapter_type type)
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{
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return add_i2c_device(name, I2C_ADAPTER_SMBUS, info);
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if (tp)
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return 0;
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/* add cyapa touchpad */
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tp = add_i2c_device("trackpad", type, &cyapa_device);
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return (!tp) ? -EAGAIN : 0;
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}
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static int __init setup_cyapa_smbus_tp(const struct dmi_system_id *id)
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{
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/* add cyapa touchpad on smbus */
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tp = add_smbus_device("trackpad", &cyapa_device);
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return 0;
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}
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static int __init setup_atmel_224s_tp(const struct dmi_system_id *id)
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static int setup_atmel_224s_tp(enum i2c_adapter_type type)
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{
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const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR,
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ATMEL_TP_I2C_ADDR,
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I2C_CLIENT_END };
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if (tp)
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return 0;
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/* add atmel mxt touchpad on VGA DDC GMBus */
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tp = add_probed_i2c_device("trackpad", I2C_ADAPTER_VGADDC,
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/* add atmel mxt touchpad */
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tp = add_probed_i2c_device("trackpad", type,
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&atmel_224s_tp_device, addr_list);
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return 0;
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return (!tp) ? -EAGAIN : 0;
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}
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static int __init setup_atmel_1664s_ts(const struct dmi_system_id *id)
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static int setup_atmel_1664s_ts(enum i2c_adapter_type type)
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{
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const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR,
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ATMEL_TS_I2C_ADDR,
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I2C_CLIENT_END };
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if (ts)
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return 0;
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/* add atmel mxt touch device on PANEL GMBus */
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ts = add_probed_i2c_device("touchscreen", I2C_ADAPTER_PANEL,
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/* add atmel mxt touch device */
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ts = add_probed_i2c_device("touchscreen", type,
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&atmel_1664s_device, addr_list);
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return 0;
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return (!ts) ? -EAGAIN : 0;
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}
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static int __init setup_isl29018_als(const struct dmi_system_id *id)
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static int setup_isl29018_als(enum i2c_adapter_type type)
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{
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if (als)
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return 0;
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/* add isl29018 light sensor */
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als = add_smbus_device("lightsensor", &isl_als_device);
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return 0;
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als = add_i2c_device("lightsensor", type, &isl_als_device);
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return (!als) ? -EAGAIN : 0;
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}
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static int __init setup_isl29023_als(const struct dmi_system_id *id)
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static int setup_tsl2583_als(enum i2c_adapter_type type)
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{
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/* add isl29023 light sensor on Panel GMBus */
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als = add_i2c_device("lightsensor", I2C_ADAPTER_PANEL,
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&isl_als_device);
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return 0;
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if (als)
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return 0;
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/* add tsl2583 light sensor */
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als = add_i2c_device(NULL, type, &tsl2583_als_device);
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return (!als) ? -EAGAIN : 0;
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}
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static int __init setup_tsl2583_als(const struct dmi_system_id *id)
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static int setup_tsl2563_als(enum i2c_adapter_type type)
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{
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/* add tsl2583 light sensor on smbus */
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als = add_smbus_device(NULL, &tsl2583_als_device);
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return 0;
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if (als)
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return 0;
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/* add tsl2563 light sensor */
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als = add_i2c_device(NULL, type, &tsl2563_als_device);
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return (!als) ? -EAGAIN : 0;
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}
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static int __init setup_tsl2563_als(const struct dmi_system_id *id)
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static int __init chromeos_laptop_dmi_matched(const struct dmi_system_id *id)
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{
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/* add tsl2563 light sensor on smbus */
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als = add_smbus_device(NULL, &tsl2563_als_device);
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return 0;
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cros_laptop = (void *)id->driver_data;
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pr_debug("DMI Matched %s.\n", id->ident);
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/* Indicate to dmi_scan that processing is done. */
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return 1;
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}
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static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = {
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static int chromeos_laptop_probe(struct platform_device *pdev)
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{
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int i;
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int ret = 0;
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for (i = 0; i < MAX_I2C_PERIPHERALS; i++) {
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struct i2c_peripheral *i2c_dev;
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i2c_dev = &cros_laptop->i2c_peripherals[i];
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/* No more peripherals. */
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if (i2c_dev->add == NULL)
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break;
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/* Add the device. Set -EPROBE_DEFER on any failure */
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if (i2c_dev->add(i2c_dev->type))
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ret = -EPROBE_DEFER;
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}
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return ret;
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}
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static struct chromeos_laptop samsung_series_5_550 = {
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.i2c_peripherals = {
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/* Touchpad. */
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{ .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
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/* Light Sensor. */
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{ .add = setup_isl29018_als, I2C_ADAPTER_SMBUS },
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},
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};
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|
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static struct chromeos_laptop samsung_series_5 = {
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.i2c_peripherals = {
|
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/* Light Sensor. */
|
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{ .add = setup_tsl2583_als, I2C_ADAPTER_SMBUS },
|
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},
|
||||
};
|
||||
|
||||
static struct chromeos_laptop chromebook_pixel = {
|
||||
.i2c_peripherals = {
|
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/* Touch Screen. */
|
||||
{ .add = setup_atmel_1664s_ts, I2C_ADAPTER_PANEL },
|
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/* Touchpad. */
|
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{ .add = setup_atmel_224s_tp, I2C_ADAPTER_VGADDC },
|
||||
/* Light Sensor. */
|
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{ .add = setup_isl29018_als, I2C_ADAPTER_PANEL },
|
||||
},
|
||||
};
|
||||
|
||||
static struct chromeos_laptop acer_c7_chromebook = {
|
||||
.i2c_peripherals = {
|
||||
/* Touchpad. */
|
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{ .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
|
||||
},
|
||||
};
|
||||
|
||||
static struct chromeos_laptop acer_ac700 = {
|
||||
.i2c_peripherals = {
|
||||
/* Light Sensor. */
|
||||
{ .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS },
|
||||
},
|
||||
};
|
||||
|
||||
static struct chromeos_laptop hp_pavilion_14_chromebook = {
|
||||
.i2c_peripherals = {
|
||||
/* Touchpad. */
|
||||
{ .add = setup_cyapa_tp, I2C_ADAPTER_SMBUS },
|
||||
},
|
||||
};
|
||||
|
||||
static struct chromeos_laptop cr48 = {
|
||||
.i2c_peripherals = {
|
||||
/* Light Sensor. */
|
||||
{ .add = setup_tsl2563_als, I2C_ADAPTER_SMBUS },
|
||||
},
|
||||
};
|
||||
|
||||
#define _CBDD(board_) \
|
||||
.callback = chromeos_laptop_dmi_matched, \
|
||||
.driver_data = (void *)&board_
|
||||
|
||||
static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = {
|
||||
{
|
||||
.ident = "Samsung Series 5 550 - Touchpad",
|
||||
.ident = "Samsung Series 5 550",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
|
||||
},
|
||||
.callback = setup_cyapa_smbus_tp,
|
||||
_CBDD(samsung_series_5_550),
|
||||
},
|
||||
{
|
||||
.ident = "Chromebook Pixel - Touchscreen",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
|
||||
},
|
||||
.callback = setup_atmel_1664s_ts,
|
||||
},
|
||||
{
|
||||
.ident = "Chromebook Pixel - Touchpad",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
|
||||
},
|
||||
.callback = setup_atmel_224s_tp,
|
||||
},
|
||||
{
|
||||
.ident = "Samsung Series 5 550 - Light Sensor",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
|
||||
},
|
||||
.callback = setup_isl29018_als,
|
||||
},
|
||||
{
|
||||
.ident = "Chromebook Pixel - Light Sensor",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
|
||||
},
|
||||
.callback = setup_isl29023_als,
|
||||
},
|
||||
{
|
||||
.ident = "Acer C7 Chromebook - Touchpad",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"),
|
||||
},
|
||||
.callback = setup_cyapa_smbus_tp,
|
||||
},
|
||||
{
|
||||
.ident = "HP Pavilion 14 Chromebook - Touchpad",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"),
|
||||
},
|
||||
.callback = setup_cyapa_smbus_tp,
|
||||
},
|
||||
{
|
||||
.ident = "Samsung Series 5 - Light Sensor",
|
||||
.ident = "Samsung Series 5",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),
|
||||
},
|
||||
.callback = setup_tsl2583_als,
|
||||
_CBDD(samsung_series_5),
|
||||
},
|
||||
{
|
||||
.ident = "Cr-48 - Light Sensor",
|
||||
.ident = "Chromebook Pixel",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
|
||||
},
|
||||
.callback = setup_tsl2563_als,
|
||||
_CBDD(chromebook_pixel),
|
||||
},
|
||||
{
|
||||
.ident = "Acer AC700 - Light Sensor",
|
||||
.ident = "Acer C7 Chromebook",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"),
|
||||
},
|
||||
_CBDD(acer_c7_chromebook),
|
||||
},
|
||||
{
|
||||
.ident = "Acer AC700",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
|
||||
},
|
||||
.callback = setup_tsl2563_als,
|
||||
_CBDD(acer_ac700),
|
||||
},
|
||||
{
|
||||
.ident = "HP Pavilion 14 Chromebook",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"),
|
||||
},
|
||||
_CBDD(hp_pavilion_14_chromebook),
|
||||
},
|
||||
{
|
||||
.ident = "Cr-48",
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
|
||||
},
|
||||
_CBDD(cr48),
|
||||
},
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table);
|
||||
|
||||
static struct platform_device *cros_platform_device;
|
||||
|
||||
static struct platform_driver cros_platform_driver = {
|
||||
.driver = {
|
||||
.name = "chromeos_laptop",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = chromeos_laptop_probe,
|
||||
};
|
||||
|
||||
static int __init chromeos_laptop_init(void)
|
||||
{
|
||||
int ret;
|
||||
if (!dmi_check_system(chromeos_laptop_dmi_table)) {
|
||||
pr_debug("%s unsupported system.\n", __func__);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ret = platform_driver_register(&cros_platform_driver);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
cros_platform_device = platform_device_alloc("chromeos_laptop", -1);
|
||||
if (!cros_platform_device) {
|
||||
ret = -ENOMEM;
|
||||
goto fail_platform_device1;
|
||||
}
|
||||
|
||||
ret = platform_device_add(cros_platform_device);
|
||||
if (ret)
|
||||
goto fail_platform_device2;
|
||||
|
||||
return 0;
|
||||
|
||||
fail_platform_device2:
|
||||
platform_device_put(cros_platform_device);
|
||||
fail_platform_device1:
|
||||
platform_driver_unregister(&cros_platform_driver);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit chromeos_laptop_exit(void)
|
||||
@ -398,6 +511,9 @@ static void __exit chromeos_laptop_exit(void)
|
||||
i2c_unregister_device(tp);
|
||||
if (ts)
|
||||
i2c_unregister_device(ts);
|
||||
|
||||
platform_device_unregister(cros_platform_device);
|
||||
platform_driver_unregister(&cros_platform_driver);
|
||||
}
|
||||
|
||||
module_init(chromeos_laptop_init);
|
||||
|
||||
101
drivers/platform/chrome/chromeos_pstore.c
Normal file
101
drivers/platform/chrome/chromeos_pstore.c
Normal file
@ -0,0 +1,101 @@
|
||||
/*
|
||||
* chromeos_pstore.c - Driver to instantiate Chromebook ramoops device
|
||||
*
|
||||
* Copyright (C) 2013 Google, 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, version 2 of the License.
|
||||
*/
|
||||
|
||||
#include <linux/dmi.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/pstore_ram.h>
|
||||
|
||||
static struct dmi_system_id chromeos_pstore_dmi_table[] __initdata = {
|
||||
{
|
||||
/*
|
||||
* Today all Chromebooks/boxes ship with GOOGLE as vendor and
|
||||
* coreboot as bios vendor. No other systems with this
|
||||
* combination are known to date.
|
||||
*/
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
|
||||
DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
|
||||
},
|
||||
},
|
||||
{
|
||||
/*
|
||||
* The first Samsung Chromebox and Chromebook Series 5 550 use
|
||||
* coreboot but with Samsung as the system vendor.
|
||||
*/
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
|
||||
DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
|
||||
},
|
||||
},
|
||||
{
|
||||
/* x86-alex, the first Samsung Chromebook. */
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),
|
||||
},
|
||||
},
|
||||
{
|
||||
/* x86-mario, the Cr-48 pilot device from Google. */
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
|
||||
},
|
||||
},
|
||||
{
|
||||
/* x86-zgb, the first Acer Chromebook. */
|
||||
.matches = {
|
||||
DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
|
||||
DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
|
||||
},
|
||||
},
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(dmi, chromeos_pstore_dmi_table);
|
||||
|
||||
/*
|
||||
* On x86 chromebooks/boxes, the firmware will keep the legacy VGA memory
|
||||
* range untouched across reboots, so we use that to store our pstore
|
||||
* contents for panic logs, etc.
|
||||
*/
|
||||
static struct ramoops_platform_data chromeos_ramoops_data = {
|
||||
.mem_size = 0x100000,
|
||||
.mem_address = 0xf00000,
|
||||
.record_size = 0x20000,
|
||||
.console_size = 0x20000,
|
||||
.ftrace_size = 0x20000,
|
||||
.dump_oops = 1,
|
||||
};
|
||||
|
||||
static struct platform_device chromeos_ramoops = {
|
||||
.name = "ramoops",
|
||||
.dev = {
|
||||
.platform_data = &chromeos_ramoops_data,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init chromeos_pstore_init(void)
|
||||
{
|
||||
if (dmi_check_system(chromeos_pstore_dmi_table))
|
||||
return platform_device_register(&chromeos_ramoops);
|
||||
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
static void __exit chromeos_pstore_exit(void)
|
||||
{
|
||||
platform_device_unregister(&chromeos_ramoops);
|
||||
}
|
||||
|
||||
module_init(chromeos_pstore_init);
|
||||
module_exit(chromeos_pstore_exit);
|
||||
|
||||
MODULE_DESCRIPTION("Chrome OS pstore module");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user