target/linux/lantiq/patches-3.7/0303-vmmc.patch

   1 --- a/arch/mips/lantiq/xway/Makefile
   2 +++ b/arch/mips/lantiq/xway/Makefile
   3 @@ -1,6 +1,6 @@
   4  obj-y := prom.o sysctrl.o clk.o reset.o dma.o timer.o dcdc.o
   5
   6 -obj-y += eth_mac.o
   7 +obj-y += eth_mac.o vmmc.o
   8  obj-$(CONFIG_PCI) += ath_eep.o rt_eep.o pci-ath-fixup.o
   9
  10  obj-$(CONFIG_XRX200_PHY_FW) += xrx200_phy_fw.o
  11 --- /dev/null
  12 +++ b/arch/mips/lantiq/xway/vmmc.c
  13 @@ -0,0 +1,63 @@
  14 +/*
  15 + *  This program is free software; you can redistribute it and/or modify it
  16 + *  under the terms of the GNU General Public License version 2 as published
  17 + *  by the Free Software Foundation.
  18 + *
  19 + *  Copyright (C) 2012 John Crispin <blogic@openwrt.org>
  20 + */
  21 +
  22 +#include <linux/module.h>
  23 +#include <linux/of_platform.h>
  24 +#include <linux/of_gpio.h>
  25 +#include <linux/dma-mapping.h>
  26 +
  27 +#include <lantiq_soc.h>
  28 +
  29 +static unsigned int *cp1_base = 0;
  30 +unsigned int* ltq_get_cp1_base(void)
  31 +{
  32 +       if (!cp1_base)
  33 +               panic("no cp1 base was set\n");
  34 +       return cp1_base;
  35 +}
  36 +EXPORT_SYMBOL(ltq_get_cp1_base);
  37 +
  38 +static int __devinit vmmc_probe(struct platform_device *pdev)
  39 +{
  40 +#define CP1_SIZE       (1 << 20)
  41 +       int gpio_count;
  42 +       dma_addr_t dma;
  43 +       cp1_base =
  44 +               (void*)CPHYSADDR(dma_alloc_coherent(NULL, CP1_SIZE, &dma, GFP_ATOMIC));
  45 +
  46 +       gpio_count = of_gpio_count(pdev->dev.of_node);
  47 +       while (gpio_count) {
  48 +               enum of_gpio_flags flags;
  49 +               int gpio = of_get_gpio_flags(pdev->dev.of_node, --gpio_count, &flags);
  50 +               if (gpio_request(gpio, "vmmc-relay"))
  51 +                       continue;
  52 +               dev_info(&pdev->dev, "requested GPIO %d\n", gpio);
  53 +               gpio_direction_output(gpio, (flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1));
  54 +       }
  55 +
  56 +       dev_info(&pdev->dev, "reserved %dMB at 0x%p", CP1_SIZE >> 20, cp1_base);
  57 +
  58 +       return 0;
  59 +}
  60 +
  61 +static const struct of_device_id vmmc_match[] = {
  62 +       { .compatible = "lantiq,vmmc" },
  63 +       {},
  64 +};
  65 +MODULE_DEVICE_TABLE(of, vmmc_match);
  66 +
  67 +static struct platform_driver vmmc_driver = {
  68 +       .probe = vmmc_probe,
  69 +       .driver = {
  70 +               .name = "lantiq,vmmc",
  71 +               .owner = THIS_MODULE,
  72 +               .of_match_table = vmmc_match,
  73 +       },
  74 +};
  75 +
  76 +module_platform_driver(vmmc_driver);