/**
* fsl_upm_find - find pre-programmed UPM via base address
* @addr_base: base address of the memory bank controlled by the UPM
* @upm: pointer to the allocated fsl_upm structure
*
* This function fills fsl_upm structure so you can use it with the rest of
* UPM API. On success this function returns 0, otherwise it returns
* appropriate errno value.
*/
int fsl_upm_find(phys_addr_t addr_base, struct fsl_upm *upm)
{
int bank;
u32 br;
struct fsl_lbc_regs __iomem *lbc;
bank = fsl_lbc_find(addr_base);
if (bank < 0)
return bank;
if (!fsl_lbc_ctrl_dev || !fsl_lbc_ctrl_dev->regs)
return -ENODEV;
lbc = fsl_lbc_ctrl_dev->regs;
br = in_be32(&lbc->bank[bank].br);
switch (br & BR_MSEL) {
case BR_MS_UPMA:
upm->mxmr = &lbc->mamr;
break;
case BR_MS_UPMB:
upm->mxmr = &lbc->mbmr;
break;
case BR_MS_UPMC:
upm->mxmr = &lbc->mcmr;
break;
default:
return -EINVAL;
}
switch (br & BR_PS) {
case BR_PS_8:
upm->width = 8;
break;
case BR_PS_16:
upm->width = 16;
break;
case BR_PS_32:
upm->width = 32;
break;
default:
return -EINVAL;
}
return 0;
}
/**
* fsl_upm_find - find pre-programmed UPM via base address
* @addr_base: base address of the memory bank controlled by the UPM
* @upm: pointer to the allocated fsl_upm structure
*
* This function fills fsl_upm structure so you can use it with the rest of
* UPM API. On success this function returns 0, otherwise it returns
* appropriate errno value.
*/
int fsl_upm_find(phys_addr_t addr_base, struct fsl_upm *upm)
{
int bank;
__be32 br;
bank = fsl_lbc_find(addr_base);
if (bank < 0)
return bank;
br = in_be32(&fsl_lbc_regs->bank[bank].br);
switch (br & BR_MSEL) {
case BR_MS_UPMA:
upm->mxmr = &fsl_lbc_regs->mamr;
break;
case BR_MS_UPMB:
upm->mxmr = &fsl_lbc_regs->mbmr;
break;
case BR_MS_UPMC:
upm->mxmr = &fsl_lbc_regs->mcmr;
break;
default:
return -EINVAL;
}
switch (br & BR_PS) {
case BR_PS_8:
upm->width = 8;
break;
case BR_PS_16:
upm->width = 16;
break;
case BR_PS_32:
upm->width = 32;
break;
default:
return -EINVAL;
}
return 0;
}