1 From 6af001cc662f4aa3740c550ac43c6b6f75df67c8 Mon Sep 17 00:00:00 2001
2 From: John Crispin <blogic@openwrt.org>
3 Date: Wed, 13 Mar 2013 10:04:01 +0100
4 Subject: [PATCH 38/40] owrt: lantiq: handle vmmc memory reservation
7 arch/mips/lantiq/xway/Makefile | 2 +-
8 arch/mips/lantiq/xway/vmmc.c | 63 ++++++++++++++++++++++++++++++++++++++++
9 2 files changed, 64 insertions(+), 1 deletion(-)
10 create mode 100644 arch/mips/lantiq/xway/vmmc.c
12 diff --git a/arch/mips/lantiq/xway/Makefile b/arch/mips/lantiq/xway/Makefile
13 index 51f0eba..3a01d22 100644
14 --- a/arch/mips/lantiq/xway/Makefile
15 +++ b/arch/mips/lantiq/xway/Makefile
17 obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o
20 +obj-y += eth_mac.o vmmc.o
21 obj-$(CONFIG_PCI) += ath_eep.o rt_eep.o pci-ath-fixup.o
23 obj-$(CONFIG_XRX200_PHY_FW) += xrx200_phy_fw.o
24 diff --git a/arch/mips/lantiq/xway/vmmc.c b/arch/mips/lantiq/xway/vmmc.c
26 index 0000000..6dedf77
28 +++ b/arch/mips/lantiq/xway/vmmc.c
31 + * This program is free software; you can redistribute it and/or modify it
32 + * under the terms of the GNU General Public License version 2 as published
33 + * by the Free Software Foundation.
35 + * Copyright (C) 2012 John Crispin <blogic@openwrt.org>
38 +#include <linux/module.h>
39 +#include <linux/of_platform.h>
40 +#include <linux/of_gpio.h>
41 +#include <linux/dma-mapping.h>
43 +#include <lantiq_soc.h>
45 +static unsigned int *cp1_base = 0;
46 +unsigned int* ltq_get_cp1_base(void)
49 + panic("no cp1 base was set\n");
52 +EXPORT_SYMBOL(ltq_get_cp1_base);
54 +static int vmmc_probe(struct platform_device *pdev)
56 +#define CP1_SIZE (1 << 20)
60 + (void*)CPHYSADDR(dma_alloc_coherent(NULL, CP1_SIZE, &dma, GFP_ATOMIC));
62 + gpio_count = of_gpio_count(pdev->dev.of_node);
63 + while (gpio_count) {
64 + enum of_gpio_flags flags;
65 + int gpio = of_get_gpio_flags(pdev->dev.of_node, --gpio_count, &flags);
66 + if (gpio_request(gpio, "vmmc-relay"))
68 + dev_info(&pdev->dev, "requested GPIO %d\n", gpio);
69 + gpio_direction_output(gpio, (flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1));
72 + dev_info(&pdev->dev, "reserved %dMB at 0x%p", CP1_SIZE >> 20, cp1_base);
77 +static const struct of_device_id vmmc_match[] = {
78 + { .compatible = "lantiq,vmmc" },
81 +MODULE_DEVICE_TABLE(of, vmmc_match);
83 +static struct platform_driver vmmc_driver = {
84 + .probe = vmmc_probe,
86 + .name = "lantiq,vmmc",
87 + .owner = THIS_MODULE,
88 + .of_match_table = vmmc_match,
92 +module_platform_driver(vmmc_driver);