[PATCH v8 16/16] MIPS: lantiq: Remove the arch/mips/lantiq/xway/reset.c implementation

Hauke Mehrtens
2017-08-02T23:00:09Z

From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

The RCU register are now access through separates drivers. remove the
last pieces of the old implementation.

The GPHY reset bits are now set by the GPHY driver which registers a
reboot notifier. The reboot is triggered by a syscon-reboot driver and
the MIPS specific parts are done by the generic MIPS implementation in
arch/mips/kernel/reset.c.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
arch/mips/lantiq/Kconfig | 1 +
arch/mips/lantiq/xway/Makefile | 2 +-
arch/mips/lantiq/xway/reset.c | 147 -----------------------------------------
3 files changed, 2 insertions(+), 148 deletions(-)
delete mode 100644 arch/mips/lantiq/xway/reset.c

diff --git a/arch/mips/lantiq/Kconfig b/arch/mips/lantiq/Kconfig
index f5db4a426568..35bc69b78268 100644
--- a/arch/mips/lantiq/Kconfig
+++ b/arch/mips/lantiq/Kconfig
@@ -18,6 +18,7 @@ config SOC_XWAY
select SOC_TYPE_XWAY
select HW_HAS_PCI
select MFD_SYSCON
+ select MFD_CORE

config SOC_FALCON
bool "FALCON"
diff --git a/arch/mips/lantiq/xway/Makefile b/arch/mips/lantiq/xway/Makefile
index 6daf3149e7ca..fbb0747c70b7 100644
--- a/arch/mips/lantiq/xway/Makefile
+++ b/arch/mips/lantiq/xway/Makefile
@@ -1,3 +1,3 @@
-obj-y := prom.o sysctrl.o clk.o reset.o dma.o gptu.o dcdc.o
+obj-y := prom.o sysctrl.o clk.o dma.o gptu.o dcdc.o

obj-y += vmmc.o
diff --git a/arch/mips/lantiq/xway/reset.c b/arch/mips/lantiq/xway/reset.c
deleted file mode 100644
index 04cd9a7c04a3..000000000000
--- a/arch/mips/lantiq/xway/reset.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * 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) 2010 John Crispin <john@phrozen.org>
- * Copyright (C) 2013-2015 Lantiq Beteiligungs-GmbH & Co.KG
- */
-
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/pm.h>
-#include <linux/export.h>
-#include <linux/delay.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-#include <linux/reset-controller.h>
-
-#include <asm/reboot.h>
-
-#include <lantiq_soc.h>
-
-#include "../prom.h"
-
-/* reset request register */
-#define RCU_RST_REQ 0x0010
-/* reset status register */
-#define RCU_RST_STAT 0x0014
-
-/* xbar BE flag */
-#define RCU_AHB_ENDIAN 0x004C
-#define RCU_VR9_BE_AHB1S 0x00000008
-
-/* reboot bit */
-#define RCU_RD_GPHY0_XRX200 BIT(31)
-#define RCU_RD_SRST BIT(30)
-#define RCU_RD_GPHY1_XRX200 BIT(29)
-
-/* reset cause */
-#define RCU_STAT_SHIFT 26
-/* boot selection */
-#define RCU_BOOT_SEL(x) ((x >> 18) & 0x7)
-#define RCU_BOOT_SEL_XRX200(x) (((x >> 17) & 0xf) | ((x >> 8) & 0x10))
-
-/* dwc2 USB configuration registers */
-#define RCU_USB1CFG 0x0018
-#define RCU_USB2CFG 0x0034
-
-/* USB DMA endianness bits */
-#define RCU_USBCFG_HDSEL_BIT BIT(11)
-#define RCU_USBCFG_HOST_END_BIT BIT(10)
-#define RCU_USBCFG_SLV_END_BIT BIT(9)
-
-/* USB reset bits */
-#define RCU_USBRESET 0x0010
-
-#define USBRESET_BIT BIT(4)
-
-#define RCU_USBRESET2 0x0048
-
-#define USB1RESET_BIT BIT(4)
-#define USB2RESET_BIT BIT(5)
-
-#define RCU_CFG1A 0x0038
-#define RCU_CFG1B 0x003C
-
-/* USB PMU devices */
-#define PMU_AHBM BIT(15)
-#define PMU_USB0 BIT(6)
-#define PMU_USB1 BIT(27)
-
-/* USB PHY PMU devices */
-#define PMU_USB0_P BIT(0)
-#define PMU_USB1_P BIT(26)
-
-/* remapped base addr of the reset control unit */
-static void __iomem *ltq_rcu_membase;
-static struct device_node *ltq_rcu_np;
-
-static void ltq_rcu_w32(uint32_t val, uint32_t reg_off)
-{
- ltq_w32(val, ltq_rcu_membase + reg_off);
-}
-
-static uint32_t ltq_rcu_r32(uint32_t reg_off)
-{
- return ltq_r32(ltq_rcu_membase + reg_off);
-}
-
-static void ltq_machine_restart(char *command)
-{
- u32 val = ltq_rcu_r32(RCU_RST_REQ);
-
- if (of_device_is_compatible(ltq_rcu_np, "lantiq,rcu-xrx200"))
- val |= RCU_RD_GPHY1_XRX200 | RCU_RD_GPHY0_XRX200;
-
- val |= RCU_RD_SRST;
-
- local_irq_disable();
- ltq_rcu_w32(val, RCU_RST_REQ);
- unreachable();
-}
-
-static void ltq_machine_halt(void)
-{
- local_irq_disable();
- unreachable();
-}
-
-static void ltq_machine_power_off(void)
-{
- local_irq_disable();
- unreachable();
-}
-
-static int __init mips_reboot_setup(void)
-{
- struct resource res;
-
- ltq_rcu_np = of_find_compatible_node(NULL, NULL, "lantiq,rcu-xway");
- if (!ltq_rcu_np)
- ltq_rcu_np = of_find_compatible_node(NULL, NULL,
- "lantiq,rcu-xrx200");
-
- /* check if all the reset register range is available */
- if (!ltq_rcu_np)
- panic("Failed to load reset resources from devicetree");
-
- if (of_address_to_resource(ltq_rcu_np, 0, &res))
- panic("Failed to get rcu memory range");
-
- if (!request_mem_region(res.start, resource_size(&res), res.name))
- pr_err("Failed to request rcu memory");
-
- ltq_rcu_membase = ioremap_nocache(res.start, resource_size(&res));
- if (!ltq_rcu_membase)
- panic("Failed to remap core memory");
-
- _machine_restart = ltq_machine_restart;
- _machine_halt = ltq_machine_halt;
- pm_power_off = ltq_machine_power_off;
-
- return 0;
-}
-
-arch_initcall(mips_reboot_setup);
--
2.11.0