diff options
| author | Stephen Barber <smbarber@chromium.org> | 2015-06-09 14:04:45 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2015-06-15 15:18:21 +0300 |
| commit | 2c7589af3c4dee844e6a4174f2aa8996cf837604 (patch) | |
| tree | daa21a14a2033a96f755af7a487c20b558267393 /drivers/mfd/cros_ec.c | |
| parent | 062476f24aa7cf714169342cc50626fd9bbb93da (diff) | |
| download | linux-2c7589af3c4dee844e6a4174f2aa8996cf837604.tar.xz | |
mfd: cros_ec: add proto v3 skeleton
Add support in cros_ec.c to handle EC host command protocol v3.
For v3+, probe for maximum shared protocol version and max
request, response, and passthrough sizes. For now, this will
always fall back to v2, since there is no bus-specific code
for handling proto v3 packets.
Signed-off-by: Stephen Barber <smbarber@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/cros_ec.c')
| -rw-r--r-- | drivers/mfd/cros_ec.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c index d857f6a2b57b..08d82bfc5268 100644 --- a/drivers/mfd/cros_ec.c +++ b/drivers/mfd/cros_ec.c @@ -36,19 +36,22 @@ int cros_ec_register(struct cros_ec_device *ec_dev) struct device *dev = ec_dev->dev; int err = 0; - if (ec_dev->din_size) { - ec_dev->din = devm_kzalloc(dev, ec_dev->din_size, GFP_KERNEL); - if (!ec_dev->din) - return -ENOMEM; - } - if (ec_dev->dout_size) { - ec_dev->dout = devm_kzalloc(dev, ec_dev->dout_size, GFP_KERNEL); - if (!ec_dev->dout) - return -ENOMEM; - } + ec_dev->max_request = sizeof(struct ec_params_hello); + ec_dev->max_response = sizeof(struct ec_response_get_protocol_info); + ec_dev->max_passthru = 0; + + ec_dev->din = devm_kzalloc(dev, ec_dev->din_size, GFP_KERNEL); + if (!ec_dev->din) + return -ENOMEM; + + ec_dev->dout = devm_kzalloc(dev, ec_dev->dout_size, GFP_KERNEL); + if (!ec_dev->dout) + return -ENOMEM; mutex_init(&ec_dev->lock); + cros_ec_query_all(ec_dev); + err = mfd_add_devices(dev, 0, cros_devs, ARRAY_SIZE(cros_devs), NULL, ec_dev->irq, NULL); |