diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.8/0032-MTD-lantiq-Add-NAND-support-on-Lantiq-Falcon-SoC.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.8/0032-MTD-lantiq-Add-NAND-support-on-Lantiq-Falcon-SoC.patch | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/target/linux/lantiq/patches-3.8/0032-MTD-lantiq-Add-NAND-support-on-Lantiq-Falcon-SoC.patch b/target/linux/lantiq/patches-3.8/0032-MTD-lantiq-Add-NAND-support-on-Lantiq-Falcon-SoC.patch deleted file mode 100644 index 3c8e099..0000000 --- a/target/linux/lantiq/patches-3.8/0032-MTD-lantiq-Add-NAND-support-on-Lantiq-Falcon-SoC.patch +++ /dev/null @@ -1,128 +0,0 @@ -From 2fd60458657ac96ab71ba4831cfb397145b3c989 Mon Sep 17 00:00:00 2001 -From: John Crispin <blogic@openwrt.org> -Date: Wed, 30 Jan 2013 21:12:47 +0100 -Subject: [PATCH 32/40] MTD: lantiq: Add NAND support on Lantiq Falcon SoC. - -The driver uses plat_nand. As the platform_device is loaded from DT, we need -to lookup the node and attach our falcon specific "struct platform_nand_data" -to it. - -Signed-off-by: Thomas Langer <thomas.langer@lantiq.com> -Signed-off-by: John Crispin <blogic@openwrt.org> ---- - drivers/mtd/nand/Kconfig | 8 ++++ - drivers/mtd/nand/Makefile | 1 + - drivers/mtd/nand/falcon_nand.c | 83 ++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 92 insertions(+) - create mode 100644 drivers/mtd/nand/falcon_nand.c - ---- a/drivers/mtd/nand/Kconfig -+++ b/drivers/mtd/nand/Kconfig -@@ -575,4 +575,12 @@ config MTD_NAND_XWAY - Enables support for NAND Flash chips on Lantiq XWAY SoCs. NAND is attached - to the External Bus Unit (EBU). - -+config MTD_NAND_FALCON -+ tristate "Support for NAND on Lantiq FALC-ON SoC" -+ depends on LANTIQ && SOC_FALCON -+ select MTD_NAND_PLATFORM -+ help -+ Enables support for NAND Flash chips on Lantiq FALC-ON SoCs. NAND is -+ attached to the External Bus Unit (EBU). -+ - endif # MTD_NAND ---- a/drivers/mtd/nand/Makefile -+++ b/drivers/mtd/nand/Makefile -@@ -53,5 +53,6 @@ obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740 - obj-$(CONFIG_MTD_NAND_GPMI_NAND) += gpmi-nand/ - obj-$(CONFIG_MTD_NAND_XWAY) += xway_nand.o - obj-$(CONFIG_MTD_NAND_BCM47XXNFLASH) += bcm47xxnflash/ -+obj-$(CONFIG_MTD_NAND_FALCON) += falcon_nand.o - - nand-objs := nand_base.o nand_bbt.o ---- /dev/null -+++ b/drivers/mtd/nand/falcon_nand.c -@@ -0,0 +1,83 @@ -+/* -+ * 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) 2011 Thomas Langer <thomas.langer@lantiq.com> -+ * Copyright (C) 2011 John Crispin <blogic@openwrt.org> -+ */ -+ -+#include <linux/mtd/nand.h> -+#include <linux/of_platform.h> -+ -+#include <lantiq_soc.h> -+ -+/* address lines used for NAND control signals */ -+#define NAND_ADDR_ALE 0x10000 -+#define NAND_ADDR_CLE 0x20000 -+ -+/* Ready/Busy Status */ -+#define MODCON_STS 0x0002 -+ -+/* Ready/Busy Status Edge */ -+#define MODCON_STSEDGE 0x0004 -+#define LTQ_EBU_MODCON 0x000C -+ -+static const char const *part_probes[] = { "cmdlinepart", "ofpart", NULL }; -+ -+static int falcon_nand_ready(struct mtd_info *mtd) -+{ -+ u32 modcon = ltq_ebu_r32(LTQ_EBU_MODCON); -+ -+ return (((modcon & (MODCON_STS | MODCON_STSEDGE)) == -+ (MODCON_STS | MODCON_STSEDGE))); -+} -+ -+static void falcon_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) -+{ -+ struct nand_chip *this = mtd->priv; -+ unsigned long nandaddr = (unsigned long) this->IO_ADDR_W; -+ -+ if (ctrl & NAND_CTRL_CHANGE) { -+ nandaddr &= ~(NAND_ADDR_ALE | NAND_ADDR_CLE); -+ -+ if (ctrl & NAND_CLE) -+ nandaddr |= NAND_ADDR_CLE; -+ if (ctrl & NAND_ALE) -+ nandaddr |= NAND_ADDR_ALE; -+ -+ this->IO_ADDR_W = (void __iomem *) nandaddr; -+ } -+ -+ if (cmd != NAND_CMD_NONE) -+ writeb(cmd, this->IO_ADDR_W); -+} -+ -+static struct platform_nand_data falcon_nand_data = { -+ .chip = { -+ .nr_chips = 1, -+ .chip_delay = 25, -+ .part_probe_types = part_probes, -+ }, -+ .ctrl = { -+ .cmd_ctrl = falcon_hwcontrol, -+ .dev_ready = falcon_nand_ready, -+ } -+}; -+ -+int __init falcon_register_nand(void) -+{ -+ struct device_node *node; -+ struct platform_device *pdev; -+ -+ node = of_find_compatible_node(NULL, NULL, "lantiq,nand-falcon"); -+ if (!node) -+ return -1; -+ pdev = of_find_device_by_node(node); -+ if (pdev) -+ pdev->dev.platform_data = &falcon_nand_data; -+ of_node_put(node); -+ return 0; -+} -+ -+arch_initcall(falcon_register_nand); |