diff options
author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-03-20 15:31:31 -0700 |
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committer | Benson Leung <bleung@chromium.org> | 2018-04-09 22:38:04 -0700 |
commit | ab6c5600d8caf5ee9a8a5081344f055bc80bc271 (patch) | |
tree | a802e3bc6e7fbc0865b24f18cec287509419580c | |
parent | 4f27f677c9541c02b7a62761f93bccbc404be8bb (diff) |
platform/chrome: chromeos_laptop - factor out getting IRQ from DMI
This will make code instantiating I2C device a bit clearer.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
-rw-r--r-- | drivers/platform/chrome/chromeos_laptop.c | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/drivers/platform/chrome/chromeos_laptop.c b/drivers/platform/chrome/chromeos_laptop.c index 08ce7a105e76..96e962ff38e8 100644 --- a/drivers/platform/chrome/chromeos_laptop.c +++ b/drivers/platform/chrome/chromeos_laptop.c @@ -120,36 +120,47 @@ static struct i2c_board_info atmel_1664s_device = { .flags = I2C_CLIENT_WAKE, }; +static int chromeos_laptop_get_irq_from_dmi(const char *dmi_name) +{ + const struct dmi_device *dmi_dev; + const struct dmi_dev_onboard *dev_data; + + dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, dmi_name, NULL); + if (!dmi_dev) { + pr_err("failed to find DMI device '%s'\n", dmi_name); + return -ENOENT; + } + + dev_data = dmi_dev->device_data; + if (!dev_data) { + pr_err("failed to get data from DMI for '%s'\n", dmi_name); + return -EINVAL; + } + + return dev_data->instance; +} + static struct i2c_client *__add_probed_i2c_device( const char *name, int bus, struct i2c_board_info *info, const unsigned short *alt_addr_list) { - const struct dmi_device *dmi_dev; - const struct dmi_dev_onboard *dev_data; struct i2c_adapter *adapter; struct i2c_client *client = NULL; const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END }; if (bus < 0) return NULL; + /* * If a name is specified, look for irq platform information stashed * in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware. */ if (name) { - dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL); - if (!dmi_dev) { - pr_err("failed to dmi find device %s\n", name); - return NULL; - } - dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data; - if (!dev_data) { - pr_err("failed to get data from dmi for %s\n", name); + info->irq = chromeos_laptop_get_irq_from_dmi(name); + if (info->irq < 0) return NULL; - } - info->irq = dev_data->instance; } adapter = i2c_get_adapter(bus); |