diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.18/0003-MIPS-lantiq-handle-vmmc-memory-reservation.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.18/0003-MIPS-lantiq-handle-vmmc-memory-reservation.patch | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.18/0003-MIPS-lantiq-handle-vmmc-memory-reservation.patch b/target/linux/lantiq/patches-3.18/0003-MIPS-lantiq-handle-vmmc-memory-reservation.patch new file mode 100644 index 0000000..cc281b6 --- /dev/null +++ b/target/linux/lantiq/patches-3.18/0003-MIPS-lantiq-handle-vmmc-memory-reservation.patch @@ -0,0 +1,86 @@ +From 16e315864132b59749faff739230daf4cee9abbb Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Wed, 13 Mar 2013 10:04:01 +0100 +Subject: [PATCH 03/36] MIPS: lantiq: handle vmmc memory reservation + +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + arch/mips/lantiq/xway/Makefile | 2 ++ + arch/mips/lantiq/xway/vmmc.c | 63 ++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 65 insertions(+) + create mode 100644 arch/mips/lantiq/xway/vmmc.c + +--- 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 +--- /dev/null ++++ b/arch/mips/lantiq/xway/vmmc.c +@@ -0,0 +1,63 @@ ++/* ++ * 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 = 0; ++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" }, ++ {}, ++}; ++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); |