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| author |   Christoph Hellwig <hch@lst.de> | 2020-09-16 09:33:59 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-09-25 06:15:32 +0200 |
| commit | 38225f2ef2f4263fc65acae63fdd4e8489c9ffcf (patch) | |
| tree | 049d9f69b361571b22f175a0cb5085c0a19fad72 /arch/arm/mach-omap1/usb.c | |
| parent | dma-mapping: better document dma_addr_t and DMA_MAPPING_ERROR (diff) | |
| download | linux-dev-38225f2ef2f4263fc65acae63fdd4e8489c9ffcf.tar.xz linux-dev-38225f2ef2f4263fc65acae63fdd4e8489c9ffcf.zip | |
ARM/omap1: switch to use dma_direct_set_offset for lbus DMA offsets
Switch the omap1510 platform ohci device to use dma_direct_set_offset
to set the DMA offset instead of using direct hooks into the DMA
mapping code and remove the now unused hooks.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap1/usb.c')
| -rw-r--r-- | arch/arm/mach-omap1/usb.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/usb.c b/arch/arm/mach-omap1/usb.c index d8e9bbda8f7b..ba8566204ea9 100644 --- a/arch/arm/mach-omap1/usb.c +++ b/arch/arm/mach-omap1/usb.c @@ -9,6 +9,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> +#include <linux/dma-mapping.h> #include <linux/io.h> #include <asm/irq.h> @@ -542,6 +543,25 @@ bad: /* ULPD_APLL_CTRL */ #define APLL_NDPLL_SWITCH (1 << 0) +static int omap_1510_usb_ohci_notifier(struct notifier_block *nb, + unsigned long event, void *data) +{ + struct device *dev = data; + + if (event != BUS_NOTIFY_ADD_DEVICE) + return NOTIFY_DONE; + + if (strncmp(dev_name(dev), "ohci", 4) == 0 && + dma_direct_set_offset(dev, PHYS_OFFSET, OMAP1510_LB_OFFSET, + (u64)-1)) + WARN_ONCE(1, "failed to set DMA offset\n"); + return NOTIFY_OK; +} + +static struct notifier_block omap_1510_usb_ohci_nb = { + .notifier_call = omap_1510_usb_ohci_notifier, +}; + static void __init omap_1510_usb_init(struct omap_usb_config *config) { unsigned int val; @@ -600,6 +620,8 @@ static void __init omap_1510_usb_init(struct omap_usb_config *config) if (config->register_host) { int status; + bus_register_notifier(&platform_bus_type, + &omap_1510_usb_ohci_nb); ohci_device.dev.platform_data = config; status = platform_device_register(&ohci_device); if (status) |