xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fsl_ifc: Change IO accessor based on endianness

Browse Source 
IFC IO accressor are set at run time based
on IFC IP registers endianness.IFC node in
DTS file contains information about
endianness.

Signed-off-by: Jaiprakash Singh <b44839@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Jaiprakash Singh
2015-05-20 21:17:11 -05:00
committed by Scott Wood
parent 3fa647bff3
commit cf184dc2dd
4 changed files with 212 additions and 140 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/memory/fsl_ifc.c
View File

@@ -62,7 +62,7 @@ int fsl_ifc_find(phys_addr_t addr_base)
return -ENODEV;
for (i = 0; i < fsl_ifc_ctrl_dev->banks; i++) {
u32 cspr = in_be32(&fsl_ifc_ctrl_dev->regs->cspr_cs[i].cspr);
u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->regs->cspr_cs[i].cspr);
if (cspr & CSPR_V && (cspr & CSPR_BA) ==
convert_ifc_address(addr_base))
return i;
@@ -79,16 +79,16 @@ static int fsl_ifc_ctrl_init(struct fsl_ifc_ctrl *ctrl)
/*
* Clear all the common status and event registers
*/
if (in_be32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER)
out_be32(&ifc->cm_evter_stat, IFC_CM_EVTER_STAT_CSER);
if (ifc_in32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER)
ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);
/* enable all error and events */
out_be32(&ifc->cm_evter_en, IFC_CM_EVTER_EN_CSEREN);
ifc_out32(IFC_CM_EVTER_EN_CSEREN, &ifc->cm_evter_en);
/* enable all error and event interrupts */
out_be32(&ifc->cm_evter_intr_en, IFC_CM_EVTER_INTR_EN_CSERIREN);
out_be32(&ifc->cm_erattr0, 0x0);
out_be32(&ifc->cm_erattr1, 0x0);
ifc_out32(IFC_CM_EVTER_INTR_EN_CSERIREN, &ifc->cm_evter_intr_en);
ifc_out32(0x0, &ifc->cm_erattr0);
ifc_out32(0x0, &ifc->cm_erattr1);
return 0;
}
@@ -127,9 +127,9 @@ static u32 check_nand_stat(struct fsl_ifc_ctrl *ctrl)
spin_lock_irqsave(&nand_irq_lock, flags);
stat = in_be32(&ifc->ifc_nand.nand_evter_stat);
stat = ifc_in32(&ifc->ifc_nand.nand_evter_stat);
if (stat) {
out_be32(&ifc->ifc_nand.nand_evter_stat, stat);
ifc_out32(stat, &ifc->ifc_nand.nand_evter_stat);
ctrl->nand_stat = stat;
wake_up(&ctrl->nand_wait);
}
@@ -161,16 +161,16 @@ static irqreturn_t fsl_ifc_ctrl_irq(int irqno, void *data)
irqreturn_t ret = IRQ_NONE;
/* read for chip select error */
cs_err = in_be32(&ifc->cm_evter_stat);
cs_err = ifc_in32(&ifc->cm_evter_stat);
if (cs_err) {
dev_err(ctrl->dev, "transaction sent to IFC is not mapped to"
"any memory bank 0x%08X\n", cs_err);
/* clear the chip select error */
out_be32(&ifc->cm_evter_stat, IFC_CM_EVTER_STAT_CSER);
ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);
/* read error attribute registers print the error information */
status = in_be32(&ifc->cm_erattr0);
err_addr = in_be32(&ifc->cm_erattr1);
status = ifc_in32(&ifc->cm_erattr0);
err_addr = ifc_in32(&ifc->cm_erattr1);
if (status & IFC_CM_ERATTR0_ERTYP_READ)
dev_err(ctrl->dev, "Read transaction error"
@@ -231,6 +231,23 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev)
goto err;
}
version = ifc_in32(&fsl_ifc_ctrl_dev->regs->ifc_rev) &
FSL_IFC_VERSION_MASK;
banks = (version == FSL_IFC_VERSION_1_0_0) ? 4 : 8;
dev_info(&dev->dev, "IFC version %d.%d, %d banks\n",
version >> 24, (version >> 16) & 0xf, banks);
fsl_ifc_ctrl_dev->version = version;
fsl_ifc_ctrl_dev->banks = banks;
if (of_property_read_bool(dev->dev.of_node, "little-endian")) {
fsl_ifc_ctrl_dev->little_endian = true;
dev_dbg(&dev->dev, "IFC REGISTERS are LITTLE endian\n");
} else {
fsl_ifc_ctrl_dev->little_endian = false;
dev_dbg(&dev->dev, "IFC REGISTERS are BIG endian\n");
}
version = ioread32be(&fsl_ifc_ctrl_dev->regs->ifc_rev) &
FSL_IFC_VERSION_MASK;
banks = (version == FSL_IFC_VERSION_1_0_0) ? 4 : 8;