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mfd: cros_ec: Instantiate sub-devices from device tree

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If the EC device tree node has sub-nodes, try to instantiate them as
MFD sub-devices.  We can configure the EC features provided by the board.

Signed-off-by: Todd Broch <tbroch@chromium.org>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Todd Broch 2015-05-20 11:31:28 +02:00 • committed by Lee Jones
parent e7b707f968
commit bb03ffb96c
1 changed files with 11 additions and 11 deletions
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22
drivers/mfd/cros_ec.c
View file

@ -17,6 +17,7 @@
* battery charging and regulator control, firmware update. * battery charging and regulator control, firmware update.
*/ */
#include <linux/of_platform.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/module.h> #include <linux/module.h>
@ -108,19 +109,9 @@ int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
EXPORT_SYMBOL(cros_ec_cmd_xfer); EXPORT_SYMBOL(cros_ec_cmd_xfer);
static const struct mfd_cell cros_devs[] = { static const struct mfd_cell cros_devs[] = {
{
.name = "cros-ec-keyb",
.id = 1,
.of_compatible = "google,cros-ec-keyb",
},
{
.name = "cros-ec-i2c-tunnel",
.id = 2,
.of_compatible = "google,cros-ec-i2c-tunnel",
},
{ {
.name = "cros-ec-ctl", .name = "cros-ec-ctl",
.id = 3, .id = PLATFORM_DEVID_AUTO,
}, },
}; };
@ -150,6 +141,15 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
return err; return err;
} }
if (IS_ENABLED(CONFIG_OF) && dev->of_node) {
err = of_platform_populate(dev->of_node, NULL, NULL, dev);
if (err) {
mfd_remove_devices(dev);
dev_err(dev, "Failed to register sub-devices\n");
return err;
}
}
dev_info(dev, "Chrome EC device registered\n"); dev_info(dev, "Chrome EC device registered\n");
return 0; return 0;