ARM: mmp: remove custom sram code

The MMP_SRAM code is no longer used by the tdma driver because
the Kconfig symbol is not selected, so remove it along with its
former callsite.

Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2022-09-30 09:25:25 +02:00
parent 06f11dfb5b
commit 028908f2ca
5 changed files with 2 additions and 222 deletions

View File

@ -8,7 +8,6 @@ obj-y += common.o devices.o time.o
obj-$(CONFIG_CPU_PXA168) += pxa168.o
obj-$(CONFIG_CPU_PXA910) += pxa910.o
obj-$(CONFIG_CPU_MMP2) += mmp2.o
obj-$(CONFIG_MMP_SRAM) += sram.o
ifeq ($(CONFIG_PM),y)
obj-$(CONFIG_CPU_PXA910) += pm-pxa910.o

View File

@ -10,7 +10,6 @@ extern void mmp2_clear_pmic_int(void);
#include <linux/i2c.h>
#include <linux/platform_data/i2c-pxa.h>
#include <linux/platform_data/dma-mmp_tdma.h>
#include <linux/irqchip/mmp.h>
#include "devices.h"
@ -29,8 +28,6 @@ extern struct mmp_device_desc mmp2_device_sdh0;
extern struct mmp_device_desc mmp2_device_sdh1;
extern struct mmp_device_desc mmp2_device_sdh2;
extern struct mmp_device_desc mmp2_device_sdh3;
extern struct mmp_device_desc mmp2_device_asram;
extern struct mmp_device_desc mmp2_device_isram;
extern struct platform_device mmp2_device_gpio;
@ -90,15 +87,5 @@ static inline int mmp2_add_sdhost(int id, struct sdhci_pxa_platdata *data)
return mmp_register_device(d, data, sizeof(*data));
}
static inline int mmp2_add_asram(struct sram_platdata *data)
{
return mmp_register_device(&mmp2_device_asram, data, sizeof(*data));
}
static inline int mmp2_add_isram(struct sram_platdata *data)
{
return mmp_register_device(&mmp2_device_isram, data, sizeof(*data));
}
#endif /* __ASM_MACH_MMP2_H */

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@ -1,167 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/mach-mmp/sram.c
*
* based on mach-davinci/sram.c - DaVinci simple SRAM allocator
*
* Copyright (c) 2011 Marvell Semiconductors Inc.
* All Rights Reserved
*
* Add for mmp sram support - Leo Yan <leoy@marvell.com>
*/
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/genalloc.h>
#include <linux/platform_data/dma-mmp_tdma.h>
struct sram_bank_info {
char *pool_name;
struct gen_pool *gpool;
int granularity;
phys_addr_t sram_phys;
void __iomem *sram_virt;
u32 sram_size;
struct list_head node;
};
static DEFINE_MUTEX(sram_lock);
static LIST_HEAD(sram_bank_list);
struct gen_pool *sram_get_gpool(char *pool_name)
{
struct sram_bank_info *info = NULL;
if (!pool_name)
return NULL;
mutex_lock(&sram_lock);
list_for_each_entry(info, &sram_bank_list, node)
if (!strcmp(pool_name, info->pool_name))
break;
mutex_unlock(&sram_lock);
if (&info->node == &sram_bank_list)
return NULL;
return info->gpool;
}
EXPORT_SYMBOL(sram_get_gpool);
static int sram_probe(struct platform_device *pdev)
{
struct sram_platdata *pdata = pdev->dev.platform_data;
struct sram_bank_info *info;
struct resource *res;
int ret = 0;
if (!pdata || !pdata->pool_name)
return -ENODEV;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
platform_set_drvdata(pdev, info);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
dev_err(&pdev->dev, "no memory resource defined\n");
ret = -ENODEV;
goto out;
}
if (!resource_size(res))
return 0;
info->sram_phys = (phys_addr_t)res->start;
info->sram_size = resource_size(res);
info->sram_virt = ioremap(info->sram_phys, info->sram_size);
info->pool_name = kstrdup(pdata->pool_name, GFP_KERNEL);
info->granularity = pdata->granularity;
info->gpool = gen_pool_create(ilog2(info->granularity), -1);
if (!info->gpool) {
dev_err(&pdev->dev, "create pool failed\n");
ret = -ENOMEM;
goto create_pool_err;
}
ret = gen_pool_add_virt(info->gpool, (unsigned long)info->sram_virt,
info->sram_phys, info->sram_size, -1);
if (ret < 0) {
dev_err(&pdev->dev, "add new chunk failed\n");
ret = -ENOMEM;
goto add_chunk_err;
}
mutex_lock(&sram_lock);
list_add(&info->node, &sram_bank_list);
mutex_unlock(&sram_lock);
dev_info(&pdev->dev, "initialized\n");
return 0;
add_chunk_err:
gen_pool_destroy(info->gpool);
create_pool_err:
iounmap(info->sram_virt);
kfree(info->pool_name);
out:
kfree(info);
return ret;
}
static int sram_remove(struct platform_device *pdev)
{
struct sram_bank_info *info;
info = platform_get_drvdata(pdev);
if (info->sram_size) {
mutex_lock(&sram_lock);
list_del(&info->node);
mutex_unlock(&sram_lock);
gen_pool_destroy(info->gpool);
iounmap(info->sram_virt);
kfree(info->pool_name);
}
kfree(info);
return 0;
}
static const struct platform_device_id sram_id_table[] = {
{ "asram", MMP_ASRAM },
{ "isram", MMP_ISRAM },
{ }
};
static struct platform_driver sram_driver = {
.probe = sram_probe,
.remove = sram_remove,
.driver = {
.name = "mmp-sram",
},
.id_table = sram_id_table,
};
static int __init sram_init(void)
{
return platform_driver_register(&sram_driver);
}
core_initcall(sram_init);
MODULE_LICENSE("GPL");

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@ -15,7 +15,7 @@
#include <linux/dmaengine.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/platform_data/dma-mmp_tdma.h>
#include <linux/genalloc.h>
#include <linux/of_device.h>
#include <linux/of_dma.h>
@ -670,10 +670,7 @@ static int mmp_tdma_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&tdev->device.channels);
if (pdev->dev.of_node)
pool = of_gen_pool_get(pdev->dev.of_node, "asram", 0);
else
pool = sram_get_gpool("asram");
pool = of_gen_pool_get(pdev->dev.of_node, "asram", 0);
if (!pool) {
dev_err(&pdev->dev, "asram pool not available\n");
return -ENOMEM;

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@ -1,36 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* SRAM Memory Management
*
* Copyright (c) 2011 Marvell Semiconductors Inc.
*/
#ifndef __DMA_MMP_TDMA_H
#define __DMA_MMP_TDMA_H
#include <linux/genalloc.h>
/* ARBITRARY: SRAM allocations are multiples of this 2^N size */
#define SRAM_GRANULARITY 512
enum sram_type {
MMP_SRAM_UNDEFINED = 0,
MMP_ASRAM,
MMP_ISRAM,
};
struct sram_platdata {
char *pool_name;
int granularity;
};
#ifdef CONFIG_MMP_SRAM
extern struct gen_pool *sram_get_gpool(char *pool_name);
#else
static inline struct gen_pool *sram_get_gpool(char *pool_name)
{
return NULL;
}
#endif
#endif /* __DMA_MMP_TDMA_H */