diff options
| -rw-r--r-- | arch/mips/lantiq/xway/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/lantiq/xway/vmmc.c | 69 |
2 files changed, 71 insertions, 0 deletions
diff --git a/arch/mips/lantiq/xway/Makefile b/arch/mips/lantiq/xway/Makefile index 087497d97357..a2edc538f477 100644 --- a/arch/mips/lantiq/xway/Makefile +++ b/arch/mips/lantiq/xway/Makefile @@ -1,3 +1,5 @@ obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o +obj-y += vmmc.o + obj-$(CONFIG_XRX200_PHY_FW) += xrx200_phy_fw.o diff --git a/arch/mips/lantiq/xway/vmmc.c b/arch/mips/lantiq/xway/vmmc.c new file mode 100644 index 000000000000..696cd57f6f13 --- /dev/null +++ b/arch/mips/lantiq/xway/vmmc.c @@ -0,0 +1,69 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * Copyright (C) 2012 John Crispin <blogic@openwrt.org> + */ + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/of_gpio.h> +#include <linux/dma-mapping.h> + +#include <lantiq_soc.h> + +static unsigned int *cp1_base; + +unsigned int *ltq_get_cp1_base(void) +{ + if (!cp1_base) + panic("no cp1 base was set\n"); + + return cp1_base; +} +EXPORT_SYMBOL(ltq_get_cp1_base); + +static int vmmc_probe(struct platform_device *pdev) +{ +#define CP1_SIZE (1 << 20) + int gpio_count; + dma_addr_t dma; + + cp1_base = + (void *) CPHYSADDR(dma_alloc_coherent(NULL, CP1_SIZE, + &dma, GFP_ATOMIC)); + + gpio_count = of_gpio_count(pdev->dev.of_node); + while (gpio_count > 0) { + enum of_gpio_flags flags; + int gpio = of_get_gpio_flags(pdev->dev.of_node, + --gpio_count, &flags); + if (gpio_request(gpio, "vmmc-relay")) + continue; + dev_info(&pdev->dev, "requested GPIO %d\n", gpio); + gpio_direction_output(gpio, + (flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1)); + } + + dev_info(&pdev->dev, "reserved %dMB at 0x%p", CP1_SIZE >> 20, cp1_base); + + return 0; +} + +static const struct of_device_id vmmc_match[] = { + { .compatible = "lantiq,vmmc-xway" }, + {}, +}; +MODULE_DEVICE_TABLE(of, vmmc_match); + +static struct platform_driver vmmc_driver = { + .probe = vmmc_probe, + .driver = { + .name = "lantiq,vmmc", + .owner = THIS_MODULE, + .of_match_table = vmmc_match, + }, +}; + +module_platform_driver(vmmc_driver); |