AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-01-17 16:36:17 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

regmap: Add a bulk field API

Browse Source 
Useful for devices with many fields.
 -----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCgAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl9yPoATHGJyb29uaWVA
 a2VybmVsLm9yZwAKCRAk1otyXVSH0JsoB/9zhtYrqKbof0AKuMfEeO+pPo4dC/9l
 O7ENgSXCb9PWy0auVpU62ISXBPadbbrQXXe3hJ1Zof5q17lYqbaLM7Uem3bxIYtc
 0HHRIb49R1sP+99T2JB3RDu/ykzHJsfxCkLgMR5MvBgS5e3KKf0SqZgNSVTYT4Y5
 oPt81sxW56Z8FLrLn0j1sVDXlro4/uBpDOcHyzgq4GWgQ6ACvnIOH+PQUTTcGBfT
 LtIkRMO8mHNKsDCy9Qy12NRsaparIbYb7KKEY9IR+6TN+qJ/g5PJQcPmsU6b0NIl
 pb7fv4IRTvPDaEPa1g20U88qkSE5H3PXp88R3y/JbSMuFJwWwS2AGwYd
 =L+6w
 -----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCgAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl9yPsMTHGJyb29uaWVA
 a2VybmVsLm9yZwAKCRAk1otyXVSH0EAjB/kB2oYbW/o8DN+Vy6t5ipMiI90R8gVQ
 9lXF1nCeH8VPXukL0fYC5hmZKch6m9gmxThDGQdejB2yAzPSD0bQcqVeJxmtvlbc
 sFfVXtujKosw6gZ8CDYvhcX71oLWso1aRt7XivrKuMG5xoQltfH1s+66LQdmU339
 RpnpipUbVdDsnO/Ual29TKXoh84N02IlgwooyvUckQdxy9pypR5P1X0XUQM5lLXZ
 52SA4PAEtyF/bBvriHMuCDeb6squ/GPLZ7z8fdeQeWfJG9Oc0spF8JM8fIjBIJOH
 jNLAI4dge1oW/ijN6LTJ72M/P5KUZXC8Ah+A2o1fFFjYcbmZ9IEm7a4r
 =JE/v
 -----END PGP SIGNATURE-----

Merge tag 'regmap-field-bulk-api' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into asoc-5.10

regmap: Add a bulk field API

Useful for devices with many fields.
This commit is contained in:
Mark Brown 2020-09-28 20:51:29 +01:00
commit 013bc9e6f7
2 changed files with 111 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
drivers/base/regmap/regmap.c
View File

@ -1227,6 +1227,106 @@ struct regmap_field *devm_regmap_field_alloc(struct device *dev,
}
EXPORT_SYMBOL_GPL(devm_regmap_field_alloc);
/**
* regmap_field_bulk_alloc() - Allocate and initialise a bulk register field.
*
* @regmap: regmap bank in which this register field is located.
* @rm_field: regmap register fields within the bank.
* @reg_field: Register fields within the bank.
* @num_fields: Number of register fields.
*
* The return value will be an -ENOMEM on error or zero for success.
* Newly allocated regmap_fields should be freed by calling
* regmap_field_bulk_free()
*/
int regmap_field_bulk_alloc(struct regmap *regmap,
struct regmap_field **rm_field,
struct reg_field *reg_field,
int num_fields)
{
struct regmap_field *rf;
int i;
rf = kcalloc(num_fields, sizeof(*rf), GFP_KERNEL);
if (!rf)
return -ENOMEM;
for (i = 0; i < num_fields; i++) {
regmap_field_init(&rf[i], regmap, reg_field[i]);
rm_field[i] = &rf[i];
}
return 0;
}
EXPORT_SYMBOL_GPL(regmap_field_bulk_alloc);
/**
* devm_regmap_field_bulk_alloc() - Allocate and initialise a bulk register
* fields.
*
* @dev: Device that will be interacted with
* @regmap: regmap bank in which this register field is located.
* @rm_field: regmap register fields within the bank.
* @reg_field: Register fields within the bank.
* @num_fields: Number of register fields.
*
* The return value will be an -ENOMEM on error or zero for success.
* Newly allocated regmap_fields will be automatically freed by the
* device management code.
*/
int devm_regmap_field_bulk_alloc(struct device *dev,
struct regmap *regmap,
struct regmap_field **rm_field,
struct reg_field *reg_field,
int num_fields)
{
struct regmap_field *rf;
int i;
rf = devm_kcalloc(dev, num_fields, sizeof(*rf), GFP_KERNEL);
if (!rf)
return -ENOMEM;
for (i = 0; i < num_fields; i++) {
regmap_field_init(&rf[i], regmap, reg_field[i]);
rm_field[i] = &rf[i];
}
return 0;
}
EXPORT_SYMBOL_GPL(devm_regmap_field_bulk_alloc);
/**
* regmap_field_bulk_free() - Free register field allocated using
* regmap_field_bulk_alloc.
*
* @field: regmap fields which should be freed.
*/
void regmap_field_bulk_free(struct regmap_field *field)
{
kfree(field);
}
EXPORT_SYMBOL_GPL(regmap_field_bulk_free);
/**
* devm_regmap_field_bulk_free() - Free a bulk register field allocated using
* devm_regmap_field_bulk_alloc.
*
* @dev: Device that will be interacted with
* @field: regmap field which should be freed.
*
* Free register field allocated using devm_regmap_field_bulk_alloc(). Usually
* drivers need not call this function, as the memory allocated via devm
* will be freed as per device-driver life-cycle.
*/
void devm_regmap_field_bulk_free(struct device *dev,
struct regmap_field *field)
{
devm_kfree(dev, field);
}
EXPORT_SYMBOL_GPL(devm_regmap_field_bulk_free);
/**
* devm_regmap_field_free() - Free a register field allocated using
* devm_regmap_field_alloc.

11
include/linux/regmap.h
View File

@ -1150,6 +1150,17 @@ struct regmap_field *devm_regmap_field_alloc(struct device *dev,
struct regmap *regmap, struct reg_field reg_field);
void devm_regmap_field_free(struct device *dev, struct regmap_field *field);
int regmap_field_bulk_alloc(struct regmap *regmap,
struct regmap_field **rm_field,
struct reg_field *reg_field,
int num_fields);
void regmap_field_bulk_free(struct regmap_field *field);
int devm_regmap_field_bulk_alloc(struct device *dev, struct regmap *regmap,
struct regmap_field **field,
struct reg_field *reg_field, int num_fields);
void devm_regmap_field_bulk_free(struct device *dev,
struct regmap_field *field);
int regmap_field_read(struct regmap_field *field, unsigned int *val);
int regmap_field_update_bits_base(struct regmap_field *field,
unsigned int mask, unsigned int val,