Commit ac0f3775 authored by Oleg Dzhimiev's avatar Oleg Dzhimiev
Browse files

sysfs init write func prototype

parent d9d60df7

src/drivers/elphel/elphel393-init.c

+23 −16
Original line number Diff line number Diff line
@@ -22,7 +22,9 @@ 
 *!  You should have received a copy of the GNU General Public License

 *!  along with this program.  If not, see <http://www.gnu.org/licenses/>.

 *!****************************************************************************/

#define pr_fmt(fmt) "elphel393-init: " fmt



#define DRV_NAME "elphel393-init"

#define pr_fmt(fmt) DRV_NAME": " fmt



#include <asm/page.h>
@@ -48,17 +50,14 @@ 
 * Read and parse bootargs parameter in the device tree

 * This driver is run in the last place - at least after NAND driver is probed

 */

static char *bootargs;

static struct mtd_info *mtd;



static char *boardinfo;



//surprise size

static char *bootargs;

//known size

static char boardinfo[2048];

static char serial[13];

//strncpy(serial,buf,sizeof(serial)-1)

//static char *serial;



static char revision[8];

//static char *revision;



static int __init elphel393_init_init (void)

{
@@ -101,14 +100,25 @@ static ssize_t get_serial(struct device *dev, struct device_attribute *attr, cha 
	return sprintf(buf,"%s\n",serial);

}



static ssize_t set_boardinfo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)

{

	pr_info("write board info\n");

	if (!boardinfo){

		pr_info("Boardinfo is empty, let's proceed\n");

	}else{

		pr_info("Boardinfo is there, do nothing\n");

	}

    return count;

}



static DEVICE_ATTR(bootargs  ,  SYSFS_PERMISSIONS & SYSFS_READONLY,    get_bootargs ,   NULL);

static DEVICE_ATTR(board_info,  SYSFS_PERMISSIONS & SYSFS_READONLY,    get_boardinfo,   NULL);

static DEVICE_ATTR(boardinfo ,  SYSFS_PERMISSIONS                 ,    get_boardinfo,   set_boardinfo);

static DEVICE_ATTR(revision  ,  SYSFS_PERMISSIONS & SYSFS_READONLY,    get_revision ,   NULL);

static DEVICE_ATTR(serial    ,  SYSFS_PERMISSIONS & SYSFS_READONLY,    get_serial ,     NULL);



static struct attribute *root_dev_attrs[] = {

        &dev_attr_bootargs.attr,

        &dev_attr_board_info.attr,

        &dev_attr_boardinfo.attr,

        &dev_attr_revision.attr,

        &dev_attr_serial.attr,

        NULL
@@ -212,11 +222,6 @@ static int elphel393_init_probe(struct platform_device *pdev) 
	pos = 0;

	ppos = &pos;



	// memory for boardinfo

	boardinfo = kmalloc(size,GFP_KERNEL);

	if (!boardinfo)

		return -ENOMEM;



	while(count){

		len = min_t(size_t,count, size);

		ret = mtd_read_user_prot_reg(mtd, *ppos, len, &retlen, kbuf);
@@ -260,7 +265,7 @@ static struct platform_driver elphel393_initialize = { 
	.probe   = elphel393_init_probe,

	.remove  = elphel393_init_remove,

	.driver  = {

		.name  = "elphel393-init",

		.name  = DRV_NAME,

		.owner = THIS_MODULE,

		.of_match_table = elphel393_init_of_match,

		.pm = NULL, /* power management */
@@ -271,3 +276,5 @@ module_platform_driver(elphel393_initialize); 
module_init(elphel393_init_init);

module_exit(elphel393_init_exit);

MODULE_LICENSE("GPL");

MODULE_AUTHOR("Elphel, Inc.");

MODULE_DESCRIPTION("Unlock rootfs flash partition and read/write board info: serial and revision");