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| author | Olof Johansson <olof@lixom.net> | 2012-11-20 06:13:24 (GMT) |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2012-11-20 06:18:46 (GMT) |
| commit | 0056a985fab537e161405a48dc8f8da0b47e0767 (patch) | |
| tree | afd223de79033a792d571916c1f9ee935a327abe /drivers | |
| parent | db2f95de7e6ab3d5cd7cc047bb09eb9ada07e3ba (diff) | |
| parent | 8e0d72d2c7a6955692ba0a21bbf5ca86e8061777 (diff) | |
| download | linux-fsl-qoriq-0056a985fab537e161405a48dc8f8da0b47e0767.tar.xz | |
Merge tag 'davinci-for-v3.8/soc' of git://gitorious.org/linux-davinci/linux-davinci into next/soc
From Sekhar Nori:
SoC updates for DaVinci. Changes include:
1) Support for PRUSS UIO driver for DA850 SoC
and related SRAM support updates.
2) Prepration for common clock migration
3) Serial support related changes for DA850 DT boot
* tag 'davinci-for-v3.8/soc' of git://gitorious.org/linux-davinci/linux-davinci:
ARM: davinci: da8xx: add DA850 PRUSS support
ARM: davinci: add platform hook to fetch the SRAM pool
ARM: davinci: da850: changed SRAM allocator to shared ram.
ARM: davinci: sram: switch from iotable to ioremapped regions
uio: uio_pruss: replace private SRAM API with genalloc
ARM: davinci: serial: provide API to initialze UART clocks
ARM: davinci: convert platform code to use clk_prepare/clk_unprepare
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/uio/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/uio/uio_pruss.c | 24 |
2 files changed, 18 insertions, 7 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, |