/**
* @brief SD card io control function.
* @param dev[in]: Block device pointer.
* @param mode[in] : Mode.
* @param cmd[in]: Command.
* @param arg[in]: Argument.
* @return SUCCESS/ERROR_ID.
*/
static int gp_sdcard_ioctrl (struct block_device *dev, fmode_t mode, unsigned cmd, unsigned long arg)
{
gpSDInfo_t *sd = dev->bd_disk->private_data;
//unsigned short sys_apb = 810;
int ret = 0;
switch(cmd)
{
case SD_CLK_SET:
{
unsigned long sys_apb_clk = 0;
struct clk *pclk;
pclk = clk_get(NULL,"clk_sys_apb");
if(pclk)
{
sys_apb_clk = clk_get_rate(pclk)/100000;
clk_put(pclk);
}
else
{
sys_apb_clk = 270;
}
ret = gpHalSDSetClk(sd->device_id, sys_apb_clk, (sd->speed>arg)?arg:sd->speed);
break;
}
case SD_CLK_BUS:
ret = gp_sdcard_setbus(sd,arg);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
/**
* @brief SD card io control function.
* @param dev[in]: Block device pointer.
* @param mode[in] : Mode.
* @param cmd[in]: Command.
* @param arg[in]: Argument.
* @return SUCCESS/ERROR_ID.
*/
static int gp_sdcard_ioctrl (struct block_device *dev, fmode_t mode, unsigned cmd, unsigned long arg)
{
gpSDInfo_t *sd = dev->bd_disk->private_data;
int ret = 0;
switch(cmd)
{
case SD_CLK_SET:
{
unsigned long sys_apb_clk = 0;
struct clk *pclk;
pclk = clk_get(NULL,"clk_sys_apb");
if(pclk)
{
sys_apb_clk = clk_get_rate(pclk)/100000;
clk_put(pclk);
}
else
{
sys_apb_clk = 270;
}
ret = gpHalSDSetClk(sd->device_id, sys_apb_clk, (sd->speed>arg)?arg:sd->speed);
break;
}
case SD_CLK_BUS:
ret = gp_sdcard_setbus(sd,arg);
break;
case SD_APP_SET:
if(sd->partition.activity)
{
/* ----- Enable app area ----- */
if(arg==1)
{
struct hd_struct *part;
part = gp_add_partition(sd->gd, GP_APP_MINOR, sd->partition.offset[MAX_SD_PART], sd->partition.capacity[MAX_SD_PART], ADDPART_FLAG_WHOLEDISK);
if (IS_ERR(part))
ret = -EIO;
}
/* ----- Disable app area ----- */
else
gp_delete_partition(sd->gd, GP_APP_MINOR);
}
else
ret = -ENOIOCTLCMD;
break;
default:
ret = -ENOIOCTLCMD;
break;
}
return ret;
}
