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Message-Id: <1346688128-22395-5-git-send-email-p.zabel@pengutronix.de>
Date: Mon, 3 Sep 2012 18:02:08 +0200
From: Philipp Zabel <p.zabel@...gutronix.de>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Grant Likely <grant.likely@...retlab.ca>,
Rob Herring <rob.herring@...xeda.com>,
Paul Gortmaker <paul.gortmaker@...driver.com>,
Shawn Guo <shawn.guo@...aro.org>,
Richard Zhao <richard.zhao@...escale.com>,
Huang Shijie <shijie8@...il.com>,
Dong Aisheng <dong.aisheng@...aro.org>, kernel@...gutronix.de,
devicetree-discuss@...ts.ozlabs.org
Cc: Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH v3 4/4] ARM i.MX: remove IRAM_ALLOC facility
A generic on-chip SRAM allocator driver can be used instead.
Users of the iram_alloc/free API should convert to the genalloc API:
- virt = iram_alloc(SIZE, &phys);
+ gen_pool_alloc(iram_pool, SIZE);
+ phys = gen_pool_virt_to_phys(iram_pool, virt);
/* ... */
- iram_free(virt, SIZE);
+ gen_pool_free(iram_pool, virt, SIZE);
Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
---
arch/arm/plat-mxc/Kconfig | 4 --
arch/arm/plat-mxc/Makefile | 1 -
arch/arm/plat-mxc/include/mach/iram.h | 41 ------------------
arch/arm/plat-mxc/iram_alloc.c | 73 ---------------------------------
4 files changed, 119 deletions(-)
delete mode 100644 arch/arm/plat-mxc/include/mach/iram.h
delete mode 100644 arch/arm/plat-mxc/iram_alloc.c
diff --git a/arch/arm/plat-mxc/Kconfig b/arch/arm/plat-mxc/Kconfig
index baf9064..8e63f10 100644
--- a/arch/arm/plat-mxc/Kconfig
+++ b/arch/arm/plat-mxc/Kconfig
@@ -82,8 +82,4 @@ config IMX_HAVE_IOMUX_V1
config ARCH_MXC_IOMUX_V3
bool
-config IRAM_ALLOC
- bool
- select GENERIC_ALLOCATOR
-
endif
diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile
index 6ac7200..bdf370f 100644
--- a/arch/arm/plat-mxc/Makefile
+++ b/arch/arm/plat-mxc/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_MXC_AVIC) += avic.o
obj-$(CONFIG_IMX_HAVE_IOMUX_V1) += iomux-v1.o
obj-$(CONFIG_ARCH_MXC_IOMUX_V3) += iomux-v3.o
-obj-$(CONFIG_IRAM_ALLOC) += iram_alloc.o
obj-$(CONFIG_MXC_ULPI) += ulpi.o
obj-$(CONFIG_MXC_USE_EPIT) += epit.o
obj-$(CONFIG_MXC_DEBUG_BOARD) += 3ds_debugboard.o
diff --git a/arch/arm/plat-mxc/include/mach/iram.h b/arch/arm/plat-mxc/include/mach/iram.h
deleted file mode 100644
index 022690c..0000000
--- a/arch/arm/plat-mxc/include/mach/iram.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301, USA.
- */
-#include <linux/errno.h>
-
-#ifdef CONFIG_IRAM_ALLOC
-
-int __init iram_init(unsigned long base, unsigned long size);
-void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr);
-void iram_free(unsigned long dma_addr, unsigned int size);
-
-#else
-
-static inline int __init iram_init(unsigned long base, unsigned long size)
-{
- return -ENOMEM;
-}
-
-static inline void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr)
-{
- return NULL;
-}
-
-static inline void iram_free(unsigned long base, unsigned long size) {}
-
-#endif
diff --git a/arch/arm/plat-mxc/iram_alloc.c b/arch/arm/plat-mxc/iram_alloc.c
deleted file mode 100644
index 074c386..0000000
--- a/arch/arm/plat-mxc/iram_alloc.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/genalloc.h>
-#include <mach/iram.h>
-
-static unsigned long iram_phys_base;
-static void __iomem *iram_virt_base;
-static struct gen_pool *iram_pool;
-
-static inline void __iomem *iram_phys_to_virt(unsigned long p)
-{
- return iram_virt_base + (p - iram_phys_base);
-}
-
-void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr)
-{
- if (!iram_pool)
- return NULL;
-
- *dma_addr = gen_pool_alloc(iram_pool, size);
- pr_debug("iram alloc - %dB@...lX\n", size, *dma_addr);
- if (!*dma_addr)
- return NULL;
- return iram_phys_to_virt(*dma_addr);
-}
-EXPORT_SYMBOL(iram_alloc);
-
-void iram_free(unsigned long addr, unsigned int size)
-{
- if (!iram_pool)
- return;
-
- gen_pool_free(iram_pool, addr, size);
-}
-EXPORT_SYMBOL(iram_free);
-
-int __init iram_init(unsigned long base, unsigned long size)
-{
- iram_phys_base = base;
-
- iram_pool = gen_pool_create(PAGE_SHIFT, -1);
- if (!iram_pool)
- return -ENOMEM;
-
- gen_pool_add(iram_pool, base, size, -1);
- iram_virt_base = ioremap(iram_phys_base, size);
- if (!iram_virt_base)
- return -EIO;
-
- pr_debug("i.MX IRAM pool: %ld KB@...p\n", size / 1024, iram_virt_base);
- return 0;
-}
--
1.7.10.4
--
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