summaryrefslogtreecommitdiff
path: root/drivers/mfd/cros_ec_dev.h
diff options
context:
space:
mode:
authorThierry Escande <thierry.escande@collabora.com>2017-11-20 19:15:26 +0300
committerLee Jones <lee.jones@linaro.org>2017-12-15 13:46:06 +0300
commit5e0115581bbc367c7958bf5ab8c511b808558533 (patch)
tree9d40619821ebaf178020c5b6ea5e3231483cf491 /drivers/mfd/cros_ec_dev.h
parentea01a31b90581a94cdeef7fda9e4522f15ef64f2 (diff)
downloadlinux-5e0115581bbc367c7958bf5ab8c511b808558533.tar.xz
cros_ec: Move cros_ec_dev module to drivers/mfd
The cros_ec_dev module is responsible for registering the MFD devices attached to the ChromeOS EC. This patch moves this module to drivers/mfd so calls to mfd_add_devices() are not done from outside the MFD subtree anymore. Signed-off-by: Thierry Escande <thierry.escande@collabora.com> Reviewed-by: Gwendal Grignou <gwendal@chromium.org> Tested-by: Guenter Roeck <groeck@chromium.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/cros_ec_dev.h')
-rw-r--r--drivers/mfd/cros_ec_dev.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/mfd/cros_ec_dev.h b/drivers/mfd/cros_ec_dev.h
new file mode 100644
index 000000000000..45e9453608c5
--- /dev/null
+++ b/drivers/mfd/cros_ec_dev.h
@@ -0,0 +1,52 @@
+/*
+ * cros_ec_dev - expose the Chrome OS Embedded Controller to userspace
+ *
+ * Copyright (C) 2014 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _CROS_EC_DEV_H_
+#define _CROS_EC_DEV_H_
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <linux/mfd/cros_ec.h>
+
+#define CROS_EC_DEV_VERSION "1.0.0"
+
+/*
+ * @offset: within EC_LPC_ADDR_MEMMAP region
+ * @bytes: number of bytes to read. zero means "read a string" (including '\0')
+ * (at most only EC_MEMMAP_SIZE bytes can be read)
+ * @buffer: where to store the result
+ * ioctl returns the number of bytes read, negative on error
+ */
+struct cros_ec_readmem {
+ uint32_t offset;
+ uint32_t bytes;
+ uint8_t buffer[EC_MEMMAP_SIZE];
+};
+
+#define CROS_EC_DEV_IOC 0xEC
+#define CROS_EC_DEV_IOCXCMD _IOWR(CROS_EC_DEV_IOC, 0, struct cros_ec_command)
+#define CROS_EC_DEV_IOCRDMEM _IOWR(CROS_EC_DEV_IOC, 1, struct cros_ec_readmem)
+
+/* Lightbar utilities */
+extern bool ec_has_lightbar(struct cros_ec_dev *ec);
+extern int lb_manual_suspend_ctrl(struct cros_ec_dev *ec, uint8_t enable);
+extern int lb_suspend(struct cros_ec_dev *ec);
+extern int lb_resume(struct cros_ec_dev *ec);
+
+#endif /* _CROS_EC_DEV_H_ */