diff options
author | Raghav Dogra <raghav.dogra@nxp.com> | 2016-02-17 16:54:18 +0530 |
---|---|---|
committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-04-19 22:04:53 +0200 |
commit | 7a654172161c8c9c7d59cbd0054d9e63c7411219 (patch) | |
tree | 457e9f43c37983d8864e260ded2f14e9d23212e2 /drivers/memory | |
parent | 11eaf6df1cce3c5e9f51b422aaedc42dc4aa1d37 (diff) | |
download | lwn-7a654172161c8c9c7d59cbd0054d9e63c7411219.tar.gz lwn-7a654172161c8c9c7d59cbd0054d9e63c7411219.zip |
mtd/ifc: Add support for IFC controller version 2.0
The new IFC controller version 2.0 has a different memory map page.
Upto IFC 1.4 PAGE size is 4 KB and from IFC2.0 PAGE size is 64KB.
This patch segregates the IFC global and runtime registers to appropriate
PAGE sizes.
Signed-off-by: Jaiprakash Singh <b44839@freescale.com>
Signed-off-by: Raghav Dogra <raghav@freescale.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Raghav Dogra <raghav.dogra@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'drivers/memory')
-rw-r--r-- | drivers/memory/fsl_ifc.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/memory/fsl_ifc.c b/drivers/memory/fsl_ifc.c index 2a691da8c1c7..904b4af5f142 100644 --- a/drivers/memory/fsl_ifc.c +++ b/drivers/memory/fsl_ifc.c @@ -59,11 +59,11 @@ int fsl_ifc_find(phys_addr_t addr_base) { int i = 0; - if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->regs) + if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->gregs) return -ENODEV; for (i = 0; i < fsl_ifc_ctrl_dev->banks; i++) { - u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->regs->cspr_cs[i].cspr); + u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->gregs->cspr_cs[i].cspr); if (cspr & CSPR_V && (cspr & CSPR_BA) == convert_ifc_address(addr_base)) return i; @@ -75,7 +75,7 @@ EXPORT_SYMBOL(fsl_ifc_find); static int fsl_ifc_ctrl_init(struct fsl_ifc_ctrl *ctrl) { - struct fsl_ifc_regs __iomem *ifc = ctrl->regs; + struct fsl_ifc_global __iomem *ifc = ctrl->gregs; /* * Clear all the common status and event registers @@ -104,7 +104,7 @@ static int fsl_ifc_ctrl_remove(struct platform_device *dev) irq_dispose_mapping(ctrl->nand_irq); irq_dispose_mapping(ctrl->irq); - iounmap(ctrl->regs); + iounmap(ctrl->gregs); dev_set_drvdata(&dev->dev, NULL); kfree(ctrl); @@ -122,7 +122,7 @@ static DEFINE_SPINLOCK(nand_irq_lock); static u32 check_nand_stat(struct fsl_ifc_ctrl *ctrl) { - struct fsl_ifc_regs __iomem *ifc = ctrl->regs; + struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs; unsigned long flags; u32 stat; @@ -157,7 +157,7 @@ static irqreturn_t fsl_ifc_nand_irq(int irqno, void *data) static irqreturn_t fsl_ifc_ctrl_irq(int irqno, void *data) { struct fsl_ifc_ctrl *ctrl = data; - struct fsl_ifc_regs __iomem *ifc = ctrl->regs; + struct fsl_ifc_global __iomem *ifc = ctrl->gregs; u32 err_axiid, err_srcid, status, cs_err, err_addr; irqreturn_t ret = IRQ_NONE; @@ -215,6 +215,7 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) { int ret = 0; int version, banks; + void __iomem *addr; dev_info(&dev->dev, "Freescale Integrated Flash Controller\n"); @@ -225,22 +226,13 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) dev_set_drvdata(&dev->dev, fsl_ifc_ctrl_dev); /* IOMAP the entire IFC region */ - fsl_ifc_ctrl_dev->regs = of_iomap(dev->dev.of_node, 0); - if (!fsl_ifc_ctrl_dev->regs) { + fsl_ifc_ctrl_dev->gregs = of_iomap(dev->dev.of_node, 0); + if (!fsl_ifc_ctrl_dev->gregs) { dev_err(&dev->dev, "failed to get memory region\n"); ret = -ENODEV; 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"); @@ -249,8 +241,9 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) dev_dbg(&dev->dev, "IFC REGISTERS are BIG endian\n"); } - version = ioread32be(&fsl_ifc_ctrl_dev->regs->ifc_rev) & + version = ifc_in32(&fsl_ifc_ctrl_dev->gregs->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); @@ -258,6 +251,13 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) fsl_ifc_ctrl_dev->version = version; fsl_ifc_ctrl_dev->banks = banks; + addr = fsl_ifc_ctrl_dev->gregs; + if (version >= FSL_IFC_VERSION_2_0_0) + addr += PGOFFSET_64K; + else + addr += PGOFFSET_4K; + fsl_ifc_ctrl_dev->rregs = addr; + /* get the Controller level irq */ fsl_ifc_ctrl_dev->irq = irq_of_parse_and_map(dev->dev.of_node, 0); if (fsl_ifc_ctrl_dev->irq == 0) { |