diff mbox

[v4,3/5] zynq: remove use of CLKDEV_LOOKUP

Message ID 079dc4cc1d0abd19cef111045ba305c474eb0e4c.1351466765.git.josh.cartwright@ni.com (mailing list archive)
State New, archived
Headers show

Commit Message

Josh Cartwright Oct. 21, 2012, 4:17 p.m. UTC
The Zynq support in mainline does not (yet) make use of any of the
generic clk or clk lookup functionality.  Remove what is upstream for
now, until the out-of-tree implementation is in suitable form for
merging.

An important side effect of this patch is that it allows the building of
a Zynq kernel without running into unresolved symbol problems:

   drivers/built-in.o: In function `amba_get_enable_pclk':
   clkdev.c:(.text+0x444): undefined reference to `clk_enable'
   drivers/built-in.o: In function `amba_remove':
   clkdev.c:(.text+0x488): undefined reference to `clk_disable'
   drivers/built-in.o: In function `amba_probe':
   clkdev.c:(.text+0x540): undefined reference to `clk_disable'
   drivers/built-in.o: In function `amba_device_add':
   clkdev.c:(.text+0x77c): undefined reference to `clk_disable'
   drivers/built-in.o: In function `enable_clock':
   clkdev.c:(.text+0x29738): undefined reference to `clk_enable'
   drivers/built-in.o: In function `disable_clock':
   clkdev.c:(.text+0x29778): undefined reference to `clk_disable'
   drivers/built-in.o: In function `__pm_clk_remove':
   clkdev.c:(.text+0x297f8): undefined reference to `clk_disable'
   drivers/built-in.o: In function `pm_clk_suspend':
   clkdev.c:(.text+0x29bc8): undefined reference to `clk_disable'
   drivers/built-in.o: In function `pm_clk_resume':
   clkdev.c:(.text+0x29c28): undefined reference to `clk_enable'
   make[2]: *** [vmlinux] Error 1
   make[1]: *** [sub-make] Error 2
   make: *** [all] Error 2

In addition, eliminate Zynq's "use" of the versatile platform, as it is no longer
needed.  As Nick Bowler points out:

	For the record, I think this was introduced by commit 56a34b03ff427
	("ARM: versatile: Make plat-versatile clock optional") which forgot to
	select PLAT_VERSATILE_CLOCK on Zynq.  This is not all that surprising,
	because the fact that Zynq "uses" PLAT_VERSATILE is secretly hidden in
	the Makefile.

	Nevertheless, the only feature from versatile that Zynq needed was the
	clock support, so this patch should *also* delete the secret use of
	plat-versatile by removing this line from arch/arm/Makefile:

	  plat-$(CONFIG_ARCH_ZYNQ)      += versatile

Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Cc: John Linn <john.linn@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Michal Simek <michal.simek@xilinx.com>
---
 arch/arm/Kconfig                         |  1 -
 arch/arm/Makefile                        |  1 -
 arch/arm/mach-zynq/common.c              |  1 -
 arch/arm/mach-zynq/include/mach/clkdev.h | 32 --------------------------------
 4 files changed, 35 deletions(-)
 delete mode 100644 arch/arm/mach-zynq/include/mach/clkdev.h

Comments

Michal Simek Oct. 29, 2012, 8 a.m. UTC | #1
> -----Original Message-----
> From: Josh Cartwright [mailto:josh.cartwright@ni.com]
> Sent: Sunday, October 21, 2012 6:17 PM
> To: arm@kernel.org; Arnd Bergmann
> Cc: linux-kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org; John
> Linn; Nick Bowler; Michal Simek
> Subject: [PATCH v4 3/5] zynq: remove use of CLKDEV_LOOKUP
> 
> The Zynq support in mainline does not (yet) make use of any of the generic clk
> or clk lookup functionality.  Remove what is upstream for now, until the out-of-
> tree implementation is in suitable form for merging.
> 
> An important side effect of this patch is that it allows the building of a Zynq
> kernel without running into unresolved symbol problems:
> 
>    drivers/built-in.o: In function `amba_get_enable_pclk':
>    clkdev.c:(.text+0x444): undefined reference to `clk_enable'
>    drivers/built-in.o: In function `amba_remove':
>    clkdev.c:(.text+0x488): undefined reference to `clk_disable'
>    drivers/built-in.o: In function `amba_probe':
>    clkdev.c:(.text+0x540): undefined reference to `clk_disable'
>    drivers/built-in.o: In function `amba_device_add':
>    clkdev.c:(.text+0x77c): undefined reference to `clk_disable'
>    drivers/built-in.o: In function `enable_clock':
>    clkdev.c:(.text+0x29738): undefined reference to `clk_enable'
>    drivers/built-in.o: In function `disable_clock':
>    clkdev.c:(.text+0x29778): undefined reference to `clk_disable'
>    drivers/built-in.o: In function `__pm_clk_remove':
>    clkdev.c:(.text+0x297f8): undefined reference to `clk_disable'
>    drivers/built-in.o: In function `pm_clk_suspend':
>    clkdev.c:(.text+0x29bc8): undefined reference to `clk_disable'
>    drivers/built-in.o: In function `pm_clk_resume':
>    clkdev.c:(.text+0x29c28): undefined reference to `clk_enable'
>    make[2]: *** [vmlinux] Error 1
>    make[1]: *** [sub-make] Error 2
>    make: *** [all] Error 2
> 
> In addition, eliminate Zynq's "use" of the versatile platform, as it is no longer
> needed.  As Nick Bowler points out:
> 
> 	For the record, I think this was introduced by commit 56a34b03ff427
> 	("ARM: versatile: Make plat-versatile clock optional") which forgot to
> 	select PLAT_VERSATILE_CLOCK on Zynq.  This is not all that surprising,
> 	because the fact that Zynq "uses" PLAT_VERSATILE is secretly hidden in
> 	the Makefile.
> 
> 	Nevertheless, the only feature from versatile that Zynq needed was the
> 	clock support, so this patch should *also* delete the secret use of
> 	plat-versatile by removing this line from arch/arm/Makefile:
> 
> 	  plat-$(CONFIG_ARCH_ZYNQ)      += versatile
> 
> Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
> Cc: John Linn <john.linn@xilinx.com>
> Acked-by: Arnd Bergmann <arnd@arndb.de>
> Tested-by: Michal Simek <michal.simek@xilinx.com>
> ---
>  arch/arm/Kconfig                         |  1 -
>  arch/arm/Makefile                        |  1 -
>  arch/arm/mach-zynq/common.c              |  1 -
>  arch/arm/mach-zynq/include/mach/clkdev.h | 32 --------------------------------
>  4 files changed, 35 deletions(-)
>  delete mode 100644 arch/arm/mach-zynq/include/mach/clkdev.h
> 

Applied to http://git.xilinx.com/?p=linux-xlnx.git;a=shortlog;h=refs/heads/arm-next

Thanks,
Michal
diff mbox

Patch

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ef6d059..3ab72e1 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -948,7 +948,6 @@  config ARCH_ZYNQ
 	bool "Xilinx Zynq ARM Cortex A9 Platform"
 	select ARM_AMBA
 	select ARM_GIC
-	select CLKDEV_LOOKUP
 	select CPU_V7
 	select GENERIC_CLOCKEVENTS
 	select ICST
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 451757d..8dbab2d 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -197,7 +197,6 @@  machine-$(CONFIG_ARCH_ZYNQ)		+= zynq
 # by CONFIG_* macro name.
 plat-$(CONFIG_ARCH_OMAP)	+= omap
 plat-$(CONFIG_ARCH_S3C64XX)	+= samsung
-plat-$(CONFIG_ARCH_ZYNQ)	+= versatile
 plat-$(CONFIG_PLAT_IOP)		+= iop
 plat-$(CONFIG_PLAT_NOMADIK)	+= nomadik
 plat-$(CONFIG_PLAT_ORION)	+= orion
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index 056091a..ba48f06 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -31,7 +31,6 @@ 
 #include <asm/hardware/cache-l2x0.h>
 
 #include <mach/zynq_soc.h>
-#include <mach/clkdev.h>
 #include "common.h"
 
 static struct of_device_id zynq_of_bus_ids[] __initdata = {
diff --git a/arch/arm/mach-zynq/include/mach/clkdev.h b/arch/arm/mach-zynq/include/mach/clkdev.h
deleted file mode 100644
index c6e73d8..0000000
--- a/arch/arm/mach-zynq/include/mach/clkdev.h
+++ /dev/null
@@ -1,32 +0,0 @@ 
-/*
- * arch/arm/mach-zynq/include/mach/clkdev.h
- *
- *  Copyright (C) 2011 Xilinx, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef __MACH_CLKDEV_H__
-#define __MACH_CLKDEV_H__
-
-#include <plat/clock.h>
-
-struct clk {
-	unsigned long		rate;
-	const struct clk_ops	*ops;
-	const struct icst_params *params;
-	void __iomem		*vcoreg;
-};
-
-#define __clk_get(clk) ({ 1; })
-#define __clk_put(clk) do { } while (0)
-
-#endif