Messages in this thread | | | Date | Thu, 18 Oct 2012 10:53:38 -0400 | From | Matt Porter <> | Subject | Re: [PATCH v4 1/7] uio: uio_pruss: replace private SRAM API with genalloc |
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On Fri, Oct 05, 2012 at 01:04:40PM -0400, Matt Porter wrote: > Remove the use of the private DaVinci SRAM API in favor > of genalloc. The pool to be used is provided by platform > data. > > Signed-off-by: Matt Porter <mporter@ti.com>
Hans,
Any additional concerns on this patch? Sekhar is holding off on applying parts 4,5,7 for davinci until this is accepted.
Thanks, Matt
> --- > drivers/uio/Kconfig | 1 + > drivers/uio/uio_pruss.c | 24 +++++++++++++++++------- > include/linux/platform_data/uio_pruss.h | 3 ++- > 3 files changed, 20 insertions(+), 8 deletions(-) > > diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig > index 6f3ea9b..c48b938 100644 > --- a/drivers/uio/Kconfig > +++ b/drivers/uio/Kconfig > @@ -97,6 +97,7 @@ config UIO_NETX > config UIO_PRUSS > tristate "Texas Instruments PRUSS driver" > depends on ARCH_DAVINCI_DA850 > + select GENERIC_ALLOCATOR > help > PRUSS driver for OMAPL138/DA850/AM18XX devices > PRUSS driver requires user space components, examples and user space > diff --git a/drivers/uio/uio_pruss.c b/drivers/uio/uio_pruss.c > index 33a7a27..f8738de 100644 > --- a/drivers/uio/uio_pruss.c > +++ b/drivers/uio/uio_pruss.c > @@ -25,7 +25,7 @@ > #include <linux/clk.h> > #include <linux/dma-mapping.h> > #include <linux/slab.h> > -#include <mach/sram.h> > +#include <linux/genalloc.h> > > #define DRV_NAME "pruss_uio" > #define DRV_VERSION "1.0" > @@ -65,10 +65,11 @@ struct uio_pruss_dev { > dma_addr_t sram_paddr; > dma_addr_t ddr_paddr; > void __iomem *prussio_vaddr; > - void *sram_vaddr; > + unsigned long sram_vaddr; > void *ddr_vaddr; > unsigned int hostirq_start; > unsigned int pintc_base; > + struct gen_pool *sram_pool; > }; > > static irqreturn_t pruss_handler(int irq, struct uio_info *info) > @@ -106,7 +107,9 @@ static void pruss_cleanup(struct platform_device *dev, > gdev->ddr_paddr); > } > if (gdev->sram_vaddr) > - sram_free(gdev->sram_vaddr, sram_pool_sz); > + gen_pool_free(gdev->sram_pool, > + gdev->sram_vaddr, > + sram_pool_sz); > kfree(gdev->info); > clk_put(gdev->pruss_clk); > kfree(gdev); > @@ -152,10 +155,17 @@ static int __devinit pruss_probe(struct platform_device *dev) > goto out_free; > } > > - gdev->sram_vaddr = sram_alloc(sram_pool_sz, &(gdev->sram_paddr)); > - if (!gdev->sram_vaddr) { > - dev_err(&dev->dev, "Could not allocate SRAM pool\n"); > - goto out_free; > + if (pdata->sram_pool) { > + gdev->sram_pool = pdata->sram_pool; > + gdev->sram_vaddr = > + gen_pool_alloc(gdev->sram_pool, sram_pool_sz); > + if (!gdev->sram_vaddr) { > + dev_err(&dev->dev, "Could not allocate SRAM pool\n"); > + goto out_free; > + } > + gdev->sram_paddr = > + gen_pool_virt_to_phys(gdev->sram_pool, > + gdev->sram_vaddr); > } > > gdev->ddr_vaddr = dma_alloc_coherent(&dev->dev, extram_pool_sz, > diff --git a/include/linux/platform_data/uio_pruss.h b/include/linux/platform_data/uio_pruss.h > index f39140a..3d47d21 100644 > --- a/include/linux/platform_data/uio_pruss.h > +++ b/include/linux/platform_data/uio_pruss.h > @@ -20,6 +20,7 @@ > > /* To configure the PRUSS INTC base offset for UIO driver */ > struct uio_pruss_pdata { > - u32 pintc_base; > + u32 pintc_base; > + struct gen_pool *sram_pool; > }; > #endif /* _UIO_PRUSS_H_ */ > -- > 1.7.9.5 >
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