diff options
| -rw-r--r-- | drivers/platform/chrome/chromeos_laptop.c | 140 | ||||
| -rw-r--r-- | drivers/platform/chrome/chromeos_pstore.c | 14 |
2 files changed, 132 insertions, 22 deletions
diff --git a/drivers/platform/chrome/chromeos_laptop.c b/drivers/platform/chrome/chromeos_laptop.c index 67b316b2a2bd..d866db80b4fd 100644 --- a/drivers/platform/chrome/chromeos_laptop.c +++ b/drivers/platform/chrome/chromeos_laptop.c @@ -37,6 +37,8 @@ #define ISL_ALS_I2C_ADDR 0x44 #define TAOS_ALS_I2C_ADDR 0x29 +#define MAX_I2C_DEVICE_DEFERRALS 5 + static struct i2c_client *als; static struct i2c_client *tp; static struct i2c_client *ts; @@ -45,6 +47,8 @@ static const char *i2c_adapter_names[] = { "SMBus I801 adapter", "i915 gmbus vga", "i915 gmbus panel", + "i2c-designware-pci", + "i2c-designware-pci", }; /* Keep this enum consistent with i2c_adapter_names */ @@ -52,11 +56,21 @@ enum i2c_adapter_type { I2C_ADAPTER_SMBUS = 0, I2C_ADAPTER_VGADDC, I2C_ADAPTER_PANEL, + I2C_ADAPTER_DESIGNWARE_0, + I2C_ADAPTER_DESIGNWARE_1, +}; + +enum i2c_peripheral_state { + UNPROBED = 0, + PROBED, + TIMEDOUT, }; struct i2c_peripheral { int (*add)(enum i2c_adapter_type type); enum i2c_adapter_type type; + enum i2c_peripheral_state state; + int tries; }; #define MAX_I2C_PERIPHERALS 3 @@ -158,8 +172,8 @@ static struct i2c_client *__add_probed_i2c_device( /* add the i2c device */ client = i2c_new_probed_device(adapter, info, addrs, NULL); if (!client) - pr_err("%s failed to register device %d-%02x\n", - __func__, bus, info->addr); + pr_notice("%s failed to register device %d-%02x\n", + __func__, bus, info->addr); else pr_debug("%s added i2c device %d-%02x\n", __func__, bus, info->addr); @@ -168,29 +182,43 @@ static struct i2c_client *__add_probed_i2c_device( return client; } +struct i2c_lookup { + const char *name; + int instance; + int n; +}; + static int __find_i2c_adap(struct device *dev, void *data) { - const char *name = data; + struct i2c_lookup *lookup = data; static const char *prefix = "i2c-"; struct i2c_adapter *adapter; + if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0) return 0; adapter = to_i2c_adapter(dev); - return (strncmp(adapter->name, name, strlen(name)) == 0); + if (strncmp(adapter->name, lookup->name, strlen(lookup->name)) == 0 && + lookup->n++ == lookup->instance) + return 1; + return 0; } static int find_i2c_adapter_num(enum i2c_adapter_type type) { struct device *dev = NULL; struct i2c_adapter *adapter; - const char *name = i2c_adapter_names[type]; + struct i2c_lookup lookup; + + memset(&lookup, 0, sizeof(lookup)); + lookup.name = i2c_adapter_names[type]; + lookup.instance = (type == I2C_ADAPTER_DESIGNWARE_1) ? 1 : 0; + /* find the adapter by name */ - dev = bus_find_device(&i2c_bus_type, NULL, (void *)name, - __find_i2c_adap); + dev = bus_find_device(&i2c_bus_type, NULL, &lookup, __find_i2c_adap); if (!dev) { /* Adapters may appear later. Deferred probing will retry */ pr_notice("%s: i2c adapter %s not found on system.\n", __func__, - name); + lookup.name); return -ENODEV; } adapter = to_i2c_adapter(dev); @@ -227,6 +255,7 @@ static struct i2c_client *add_i2c_device(const char *name, struct i2c_board_info *info) { const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END }; + return __add_probed_i2c_device(name, find_i2c_adapter_num(type), info, @@ -324,9 +353,36 @@ static int chromeos_laptop_probe(struct platform_device *pdev) if (i2c_dev->add == NULL) break; - /* Add the device. Set -EPROBE_DEFER on any failure */ - if (i2c_dev->add(i2c_dev->type)) + if (i2c_dev->state == TIMEDOUT || i2c_dev->state == PROBED) + continue; + + /* + * Check that the i2c adapter is present. + * -EPROBE_DEFER if missing as the adapter may appear much + * later. + */ + if (find_i2c_adapter_num(i2c_dev->type) == -ENODEV) { ret = -EPROBE_DEFER; + continue; + } + + /* Add the device. */ + if (i2c_dev->add(i2c_dev->type) == -EAGAIN) { + /* + * Set -EPROBE_DEFER a limited num of times + * if device is not successfully added. + */ + if (++i2c_dev->tries < MAX_I2C_DEVICE_DEFERRALS) { + ret = -EPROBE_DEFER; + } else { + /* Ran out of tries. */ + pr_notice("%s: Ran out of tries for device.\n", + __func__); + i2c_dev->state = TIMEDOUT; + } + } else { + i2c_dev->state = PROBED; + } } return ret; @@ -359,6 +415,27 @@ static struct chromeos_laptop chromebook_pixel = { }, }; +static struct chromeos_laptop hp_chromebook_14 = { + .i2c_peripherals = { + /* Touchpad. */ + { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, + }, +}; + +static struct chromeos_laptop dell_chromebook_11 = { + .i2c_peripherals = { + /* Touchpad. */ + { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, + }, +}; + +static struct chromeos_laptop toshiba_cb35 = { + .i2c_peripherals = { + /* Touchpad. */ + { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, + }, +}; + static struct chromeos_laptop acer_c7_chromebook = { .i2c_peripherals = { /* Touchpad. */ @@ -373,6 +450,17 @@ static struct chromeos_laptop acer_ac700 = { }, }; +static struct chromeos_laptop acer_c720 = { + .i2c_peripherals = { + /* Touchscreen. */ + { .add = setup_atmel_1664s_ts, I2C_ADAPTER_DESIGNWARE_1 }, + /* Touchpad. */ + { .add = setup_cyapa_tp, I2C_ADAPTER_DESIGNWARE_0 }, + /* Light Sensor. */ + { .add = setup_isl29018_als, I2C_ADAPTER_DESIGNWARE_1 }, + }, +}; + static struct chromeos_laptop hp_pavilion_14_chromebook = { .i2c_peripherals = { /* Touchpad. */ @@ -416,6 +504,30 @@ static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = { _CBDD(chromebook_pixel), }, { + .ident = "Wolf", + .matches = { + DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"), + DMI_MATCH(DMI_PRODUCT_NAME, "Wolf"), + }, + _CBDD(dell_chromebook_11), + }, + { + .ident = "HP Chromebook 14", + .matches = { + DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"), + DMI_MATCH(DMI_PRODUCT_NAME, "Falco"), + }, + _CBDD(hp_chromebook_14), + }, + { + .ident = "Toshiba CB35", + .matches = { + DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"), + DMI_MATCH(DMI_PRODUCT_NAME, "Leon"), + }, + _CBDD(toshiba_cb35), + }, + { .ident = "Acer C7 Chromebook", .matches = { DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"), @@ -430,6 +542,13 @@ static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = { _CBDD(acer_ac700), }, { + .ident = "Acer C720", + .matches = { + DMI_MATCH(DMI_PRODUCT_NAME, "Peppy"), + }, + _CBDD(acer_c720), + }, + { .ident = "HP Pavilion 14 Chromebook", .matches = { DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"), @@ -460,6 +579,7 @@ static struct platform_driver cros_platform_driver = { 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; diff --git a/drivers/platform/chrome/chromeos_pstore.c b/drivers/platform/chrome/chromeos_pstore.c index e0e0e65cf442..34749200e4ab 100644 --- a/drivers/platform/chrome/chromeos_pstore.c +++ b/drivers/platform/chrome/chromeos_pstore.c @@ -16,23 +16,13 @@ static struct dmi_system_id chromeos_pstore_dmi_table[] __initdata = { { /* - * Today all Chromebooks/boxes ship with GOOGLE as vendor and + * Today all Chromebooks/boxes ship with Google_* as version 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"), + DMI_MATCH(DMI_BIOS_VERSION, "Google_"), }, }, { |
