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Message-ID: <CAOJe8K2TFtppS4ni=ZCL=p853jO=ewjp3i+wOAQpVeSb7BFkUw@mail.gmail.com>
Date: Thu, 11 Feb 2016 12:21:24 +0300
From: Denis Kirjanov <kda@...ux-powerpc.org>
To: Alessio Igor Bogani <alessio.bogani@...ttra.eu>
Cc: Scott Wood <oss@...error.net>,
Kumar Gala <galak@...nel.crashing.org>,
linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] powerpc/86xx: Consolidate common platform code
On 2/11/16, Alessio Igor Bogani <alessio.bogani@...ttra.eu> wrote:
> Signed-off-by: Alessio Igor Bogani <alessio.bogani@...ttra.eu>
> ---
> v1 -> v2
> Use appropriate [PATCH] prefix
>
> arch/powerpc/platforms/86xx/Makefile | 2 +-
> arch/powerpc/platforms/86xx/common.c | 42
> ++++++++++++++++++++++++++++++
> arch/powerpc/platforms/86xx/gef_ppc9a.c | 32 +----------------------
> arch/powerpc/platforms/86xx/gef_sbc310.c | 32 +----------------------
> arch/powerpc/platforms/86xx/gef_sbc610.c | 32 +----------------------
> arch/powerpc/platforms/86xx/mpc8610_hpcd.c | 20 ++------------
> arch/powerpc/platforms/86xx/mpc86xx.h | 2 ++
> arch/powerpc/platforms/86xx/mpc86xx_hpcn.c | 21 +--------------
> arch/powerpc/platforms/86xx/sbc8641d.c | 32 +----------------------
> 9 files changed, 52 insertions(+), 163 deletions(-)
> create mode 100644 arch/powerpc/platforms/86xx/common.c
>
> diff --git a/arch/powerpc/platforms/86xx/Makefile
> b/arch/powerpc/platforms/86xx/Makefile
> index ede815d..2d889ad 100644
> --- a/arch/powerpc/platforms/86xx/Makefile
> +++ b/arch/powerpc/platforms/86xx/Makefile
> @@ -2,7 +2,7 @@
> # Makefile for the PowerPC 86xx linux kernel.
> #
>
> -obj-y := pic.o
> +obj-y := pic.o common.o
> obj-$(CONFIG_SMP) += mpc86xx_smp.o
> obj-$(CONFIG_MPC8641_HPCN) += mpc86xx_hpcn.o
> obj-$(CONFIG_SBC8641D) += sbc8641d.o
> diff --git a/arch/powerpc/platforms/86xx/common.c
> b/arch/powerpc/platforms/86xx/common.c
> new file mode 100644
> index 0000000..bee3177
> --- /dev/null
> +++ b/arch/powerpc/platforms/86xx/common.c
> @@ -0,0 +1,42 @@
> +/*
> + * Routines common to most mpc86xx-based boards.
> + *
> + * This 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.
> + */
> +
> +#include <linux/of_platform.h>
> +
> +#include "mpc86xx.h"
> +
> +static const struct of_device_id mpc86xx_common_ids[] __initconst = {
> + { .type = "soc", },
> + { .compatible = "soc", },
> + { .compatible = "simple-bus", },
> + { .name = "localbus", },
> + { .compatible = "gianfar", },
> + { .compatible = "fsl,mpc8641-pcie", },
> + {},
> +};
> +
> +int __init mpc86xx_common_publish_devices(void)
> +{
> + return of_platform_bus_probe(NULL, mpc86xx_common_ids, NULL);
> +}
> +
> +long __init mpc86xx_time_init(void)
> +{
> + unsigned int temp;
> +
> + /* Set the time base to zero */
> + mtspr(SPRN_TBWL, 0);
> + mtspr(SPRN_TBWU, 0);
> +
> + temp = mfspr(SPRN_HID0);
> + temp |= HID0_TBEN;
> + mtspr(SPRN_HID0, temp);
> + asm volatile("isync");
While we're here you could just use isync()
> +
> + return 0;
> +}
> diff --git a/arch/powerpc/platforms/86xx/gef_ppc9a.c
> b/arch/powerpc/platforms/86xx/gef_ppc9a.c
> index bf17933..8e63b75 100644
> --- a/arch/powerpc/platforms/86xx/gef_ppc9a.c
> +++ b/arch/powerpc/platforms/86xx/gef_ppc9a.c
> @@ -197,37 +197,7 @@ static int __init gef_ppc9a_probe(void)
> return 0;
> }
>
> -static long __init mpc86xx_time_init(void)
> -{
> - unsigned int temp;
> -
> - /* Set the time base to zero */
> - mtspr(SPRN_TBWL, 0);
> - mtspr(SPRN_TBWU, 0);
> -
> - temp = mfspr(SPRN_HID0);
> - temp |= HID0_TBEN;
> - mtspr(SPRN_HID0, temp);
> - asm volatile("isync");
> -
> - return 0;
> -}
> -
> -static const struct of_device_id of_bus_ids[] __initconst = {
> - { .compatible = "simple-bus", },
> - { .compatible = "gianfar", },
> - { .compatible = "fsl,mpc8641-pcie", },
> - {},
> -};
> -
> -static int __init declare_of_platform_devices(void)
> -{
> - printk(KERN_DEBUG "Probe platform devices\n");
> - of_platform_bus_probe(NULL, of_bus_ids, NULL);
> -
> - return 0;
> -}
> -machine_arch_initcall(gef_ppc9a, declare_of_platform_devices);
> +machine_arch_initcall(gef_ppc9a, mpc86xx_common_publish_devices);
>
> define_machine(gef_ppc9a) {
> .name = "GE PPC9A",
> diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c
> b/arch/powerpc/platforms/86xx/gef_sbc310.c
> index 8facf58..0e0be94 100644
> --- a/arch/powerpc/platforms/86xx/gef_sbc310.c
> +++ b/arch/powerpc/platforms/86xx/gef_sbc310.c
> @@ -184,37 +184,7 @@ static int __init gef_sbc310_probe(void)
> return 0;
> }
>
> -static long __init mpc86xx_time_init(void)
> -{
> - unsigned int temp;
> -
> - /* Set the time base to zero */
> - mtspr(SPRN_TBWL, 0);
> - mtspr(SPRN_TBWU, 0);
> -
> - temp = mfspr(SPRN_HID0);
> - temp |= HID0_TBEN;
> - mtspr(SPRN_HID0, temp);
> - asm volatile("isync");
> -
> - return 0;
> -}
> -
> -static const struct of_device_id of_bus_ids[] __initconst = {
> - { .compatible = "simple-bus", },
> - { .compatible = "gianfar", },
> - { .compatible = "fsl,mpc8641-pcie", },
> - {},
> -};
> -
> -static int __init declare_of_platform_devices(void)
> -{
> - printk(KERN_DEBUG "Probe platform devices\n");
> - of_platform_bus_probe(NULL, of_bus_ids, NULL);
> -
> - return 0;
> -}
> -machine_arch_initcall(gef_sbc310, declare_of_platform_devices);
> +machine_arch_initcall(gef_sbc310, mpc86xx_common_publish_devices);
>
> define_machine(gef_sbc310) {
> .name = "GE SBC310",
> diff --git a/arch/powerpc/platforms/86xx/gef_sbc610.c
> b/arch/powerpc/platforms/86xx/gef_sbc610.c
> index 8c9058d..e8292b4 100644
> --- a/arch/powerpc/platforms/86xx/gef_sbc610.c
> +++ b/arch/powerpc/platforms/86xx/gef_sbc610.c
> @@ -174,37 +174,7 @@ static int __init gef_sbc610_probe(void)
> return 0;
> }
>
> -static long __init mpc86xx_time_init(void)
> -{
> - unsigned int temp;
> -
> - /* Set the time base to zero */
> - mtspr(SPRN_TBWL, 0);
> - mtspr(SPRN_TBWU, 0);
> -
> - temp = mfspr(SPRN_HID0);
> - temp |= HID0_TBEN;
> - mtspr(SPRN_HID0, temp);
> - asm volatile("isync");
> -
> - return 0;
> -}
> -
> -static const struct of_device_id of_bus_ids[] __initconst = {
> - { .compatible = "simple-bus", },
> - { .compatible = "gianfar", },
> - { .compatible = "fsl,mpc8641-pcie", },
> - {},
> -};
> -
> -static int __init declare_of_platform_devices(void)
> -{
> - printk(KERN_DEBUG "Probe platform devices\n");
> - of_platform_bus_probe(NULL, of_bus_ids, NULL);
> -
> - return 0;
> -}
> -machine_arch_initcall(gef_sbc610, declare_of_platform_devices);
> +machine_arch_initcall(gef_sbc610, mpc86xx_common_publish_devices);
>
> define_machine(gef_sbc610) {
> .name = "GE SBC610",
> diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
> b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
> index 437a9c3..957473e 100644
> --- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
> +++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
> @@ -88,12 +88,10 @@ static inline void mpc8610_suspend_init(void) { }
> static const struct of_device_id mpc8610_ids[] __initconst = {
> { .compatible = "fsl,mpc8610-immr", },
> { .compatible = "fsl,mpc8610-guts", },
> - { .compatible = "simple-bus", },
> /* So that the DMA channel nodes can be probed individually: */
> { .compatible = "fsl,eloplus-dma", },
> /* PCI controllers */
> { .compatible = "fsl,mpc8610-pci", },
> - { .compatible = "fsl,mpc8641-pcie", },
> {}
> };
>
> @@ -105,6 +103,8 @@ static int __init
> mpc8610_declare_of_platform_devices(void)
> /* Enable wakeup on PIXIS' event IRQ. */
> mpc8610_suspend_init();
>
> + mpc86xx_common_publish_devices();
> +
> /* Without this call, the SSI device driver won't get probed. */
> of_platform_bus_probe(NULL, mpc8610_ids, NULL);
>
> @@ -327,22 +327,6 @@ static int __init mpc86xx_hpcd_probe(void)
> return 0;
> }
>
> -static long __init mpc86xx_time_init(void)
> -{
> - unsigned int temp;
> -
> - /* Set the time base to zero */
> - mtspr(SPRN_TBWL, 0);
> - mtspr(SPRN_TBWU, 0);
> -
> - temp = mfspr(SPRN_HID0);
> - temp |= HID0_TBEN;
> - mtspr(SPRN_HID0, temp);
> - asm volatile("isync");
> -
> - return 0;
> -}
> -
> define_machine(mpc86xx_hpcd) {
> .name = "MPC86xx HPCD",
> .probe = mpc86xx_hpcd_probe,
> diff --git a/arch/powerpc/platforms/86xx/mpc86xx.h
> b/arch/powerpc/platforms/86xx/mpc86xx.h
> index 08efb57..53500db 100644
> --- a/arch/powerpc/platforms/86xx/mpc86xx.h
> +++ b/arch/powerpc/platforms/86xx/mpc86xx.h
> @@ -17,5 +17,7 @@
>
> extern void mpc86xx_smp_init(void);
> extern void mpc86xx_init_irq(void);
> +extern long mpc86xx_time_init(void);
> +extern int mpc86xx_common_publish_devices(void);
>
> #endif /* __MPC86XX_H__ */
> diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
> b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
> index 07ccb1b..e508481 100644
> --- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
> +++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
> @@ -110,33 +110,14 @@ static int __init mpc86xx_hpcn_probe(void)
> return 0;
> }
>
> -static long __init
> -mpc86xx_time_init(void)
> -{
> - unsigned int temp;
> -
> - /* Set the time base to zero */
> - mtspr(SPRN_TBWL, 0);
> - mtspr(SPRN_TBWU, 0);
> -
> - temp = mfspr(SPRN_HID0);
> - temp |= HID0_TBEN;
> - mtspr(SPRN_HID0, temp);
> - asm volatile("isync");
> -
> - return 0;
> -}
> -
> static const struct of_device_id of_bus_ids[] __initconst = {
> - { .compatible = "simple-bus", },
> { .compatible = "fsl,srio", },
> - { .compatible = "gianfar", },
> - { .compatible = "fsl,mpc8641-pcie", },
> {},
> };
>
> static int __init declare_of_platform_devices(void)
> {
> + mpc86xx_common_publish_devices();
> of_platform_bus_probe(NULL, of_bus_ids, NULL);
>
> return 0;
> diff --git a/arch/powerpc/platforms/86xx/sbc8641d.c
> b/arch/powerpc/platforms/86xx/sbc8641d.c
> index 6810b71..2a9cf27 100644
> --- a/arch/powerpc/platforms/86xx/sbc8641d.c
> +++ b/arch/powerpc/platforms/86xx/sbc8641d.c
> @@ -75,37 +75,7 @@ static int __init sbc8641_probe(void)
> return 0;
> }
>
> -static long __init
> -mpc86xx_time_init(void)
> -{
> - unsigned int temp;
> -
> - /* Set the time base to zero */
> - mtspr(SPRN_TBWL, 0);
> - mtspr(SPRN_TBWU, 0);
> -
> - temp = mfspr(SPRN_HID0);
> - temp |= HID0_TBEN;
> - mtspr(SPRN_HID0, temp);
> - asm volatile("isync");
> -
> - return 0;
> -}
> -
> -static const struct of_device_id of_bus_ids[] __initconst = {
> - { .compatible = "simple-bus", },
> - { .compatible = "gianfar", },
> - { .compatible = "fsl,mpc8641-pcie", },
> - {},
> -};
> -
> -static int __init declare_of_platform_devices(void)
> -{
> - of_platform_bus_probe(NULL, of_bus_ids, NULL);
> -
> - return 0;
> -}
> -machine_arch_initcall(sbc8641, declare_of_platform_devices);
> +machine_arch_initcall(sbc8641, mpc86xx_common_publish_devices);
>
> define_machine(sbc8641) {
> .name = "SBC8641D",
> --
> 2.7.1
>
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