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drivers/fsi: Add device read/write/peek API

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This change introduces the fsi device API: simple read, write and peek
accessors for the devices' address spaces.

Includes contributions from Christopher Bostic
<cbostic@linux.vnet.ibm.com> and Edward A. James <eajames@us.ibm.com>.

Signed-off-by: Edward A. James <eajames@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeremy Kerr 2017-06-06 16:08:45 -05:00 • committed by Greg Kroah-Hartman
parent f7ade2a603
commit 4efe37f4c4
2 changed files with 55 additions and 2 deletions
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7
include/linux/fsi.h
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@ -27,6 +27,12 @@ struct fsi_device {
uint32_t size;
};
extern int fsi_device_read(struct fsi_device *dev, uint32_t addr,
void *val, size_t size);
extern int fsi_device_write(struct fsi_device *dev, uint32_t addr,
const void *val, size_t size);
extern int fsi_device_peek(struct fsi_device *dev, void *val);
struct fsi_device_id {
u8 engine_type;
u8 version;
@ -40,7 +46,6 @@ struct fsi_device_id {
#define FSI_DEVICE_VERSIONED(t, v) \
.engine_type = (t), .version = (v),
struct fsi_driver {
struct device_driver drv;
const struct fsi_device_id *id_table;