[RFC PATCH 07/12] staging: android: ion: Remove old platform support

Laura Abbott
2017-03-02T21:44:39Z

Device specific platform support has been haphazard for Ion. There have
been several independent attempts and there are still objections to
what bindings exist right now. Just remove everything for a fresh start.

Signed-off-by: Laura Abbott <labbott@redhat.com>
---
drivers/staging/android/ion/Kconfig | 35 ----
drivers/staging/android/ion/Makefile | 6 -
drivers/staging/android/ion/hisilicon/Kconfig | 5 -
drivers/staging/android/ion/hisilicon/Makefile | 1 -
drivers/staging/android/ion/hisilicon/hi6220_ion.c | 113 -------------
drivers/staging/android/ion/ion_dummy_driver.c | 156 -----------------
drivers/staging/android/ion/ion_of.c | 184 ---------------------
drivers/staging/android/ion/ion_of.h | 37 -----
drivers/staging/android/ion/tegra/Makefile | 1 -
drivers/staging/android/ion/tegra/tegra_ion.c | 80 ---------
10 files changed, 618 deletions(-)
delete mode 100644 drivers/staging/android/ion/hisilicon/Kconfig
delete mode 100644 drivers/staging/android/ion/hisilicon/Makefile
delete mode 100644 drivers/staging/android/ion/hisilicon/hi6220_ion.c
delete mode 100644 drivers/staging/android/ion/ion_dummy_driver.c
delete mode 100644 drivers/staging/android/ion/ion_of.c
delete mode 100644 drivers/staging/android/ion/ion_of.h
delete mode 100644 drivers/staging/android/ion/tegra/Makefile
delete mode 100644 drivers/staging/android/ion/tegra/tegra_ion.c

diff --git a/drivers/staging/android/ion/Kconfig b/drivers/staging/android/ion/Kconfig
index c8fb413..0c91b2b 100644
--- a/drivers/staging/android/ion/Kconfig
+++ b/drivers/staging/android/ion/Kconfig
@@ -17,38 +17,3 @@ config ION_TEST
Choose this option to create a device that can be used to test the
kernel and device side ION functions.

-config ION_DUMMY
- bool "Dummy Ion driver"
- depends on ION
- help
- Provides a dummy ION driver that registers the
- /dev/ion device and some basic heaps. This can
- be used for testing the ION infrastructure if
- one doesn't have access to hardware drivers that
- use ION.
-
-config ION_TEGRA
- tristate "Ion for Tegra"
- depends on ARCH_TEGRA && ION
- help
- Choose this option if you wish to use ion on an nVidia Tegra.
-
-config ION_HISI
- tristate "Ion for Hisilicon"
- depends on ARCH_HISI && ION
- select ION_OF
- help
- Choose this option if you wish to use ion on Hisilicon Platform.
-
-source "drivers/staging/android/ion/hisilicon/Kconfig"
-
-config ION_OF
- bool "Devicetree support for Ion"
- depends on ION && OF_ADDRESS
- help
- Provides base support for defining Ion heaps in devicetree
- and setting them up. Also includes functions for platforms
- to parse the devicetree and expand for their own custom
- extensions
-
- If using Ion and devicetree, you should say Y here
diff --git a/drivers/staging/android/ion/Makefile b/drivers/staging/android/ion/Makefile
index 5d630a0..9457090 100644
--- a/drivers/staging/android/ion/Makefile
+++ b/drivers/staging/android/ion/Makefile
@@ -5,9 +5,3 @@ obj-$(CONFIG_ION_TEST) += ion_test.o
ifdef CONFIG_COMPAT
obj-$(CONFIG_ION) += compat_ion.o
endif
-
-obj-$(CONFIG_ION_DUMMY) += ion_dummy_driver.o
-obj-$(CONFIG_ION_TEGRA) += tegra/
-obj-$(CONFIG_ION_HISI) += hisilicon/
-obj-$(CONFIG_ION_OF) += ion_of.o
-
diff --git a/drivers/staging/android/ion/hisilicon/Kconfig b/drivers/staging/android/ion/hisilicon/Kconfig
deleted file mode 100644
index 2b4bd07..0000000
--- a/drivers/staging/android/ion/hisilicon/Kconfig
+++ /dev/null
@@ -1,5 +0,0 @@
-config HI6220_ION
- bool "Hi6220 ION Driver"
- depends on ARCH_HISI && ION
- help
- Build the Hisilicon Hi6220 ion driver.
diff --git a/drivers/staging/android/ion/hisilicon/Makefile b/drivers/staging/android/ion/hisilicon/Makefile
deleted file mode 100644
index 2a89414..0000000
--- a/drivers/staging/android/ion/hisilicon/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_HI6220_ION) += hi6220_ion.o
diff --git a/drivers/staging/android/ion/hisilicon/hi6220_ion.c b/drivers/staging/android/ion/hisilicon/hi6220_ion.c
deleted file mode 100644
index 0de7897..0000000
--- a/drivers/staging/android/ion/hisilicon/hi6220_ion.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Hisilicon Hi6220 ION Driver
- *
- * Copyright (c) 2015 Hisilicon Limited.
- *
- * Author: Chen Feng <puck.chen@hisilicon.com>
- *
- * 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.
- */
-
-#define pr_fmt(fmt) "Ion: " fmt
-
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/mm.h>
-#include "../ion_priv.h"
-#include "../ion.h"
-#include "../ion_of.h"
-
-struct hisi_ion_dev {
- struct ion_heap **heaps;
- struct ion_device *idev;
- struct ion_platform_data *data;
-};
-
-static struct ion_of_heap hisi_heaps[] = {
- PLATFORM_HEAP("hisilicon,sys_user", 0,
- ION_HEAP_TYPE_SYSTEM, "sys_user"),
- PLATFORM_HEAP("hisilicon,sys_contig", 1,
- ION_HEAP_TYPE_SYSTEM_CONTIG, "sys_contig"),
- PLATFORM_HEAP("hisilicon,cma", ION_HEAP_TYPE_DMA, ION_HEAP_TYPE_DMA,
- "cma"),
- {}
-};
-
-static int hi6220_ion_probe(struct platform_device *pdev)
-{
- struct hisi_ion_dev *ipdev;
- int i;
-
- ipdev = devm_kzalloc(&pdev->dev, sizeof(*ipdev), GFP_KERNEL);
- if (!ipdev)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, ipdev);
-
- ipdev->idev = ion_device_create(NULL);
- if (IS_ERR(ipdev->idev))
- return PTR_ERR(ipdev->idev);
-
- ipdev->data = ion_parse_dt(pdev, hisi_heaps);
- if (IS_ERR(ipdev->data))
- return PTR_ERR(ipdev->data);
-
- ipdev->heaps = devm_kzalloc(&pdev->dev,
- sizeof(struct ion_heap) * ipdev->data->nr,
- GFP_KERNEL);
- if (!ipdev->heaps) {
- ion_destroy_platform_data(ipdev->data);
- return -ENOMEM;
- }
-
- for (i = 0; i < ipdev->data->nr; i++) {
- ipdev->heaps[i] = ion_heap_create(&ipdev->data->heaps[i]);
- if (!ipdev->heaps) {
- ion_destroy_platform_data(ipdev->data);
- return -ENOMEM;
- }
- ion_device_add_heap(ipdev->idev, ipdev->heaps[i]);
- }
- return 0;
-}
-
-static int hi6220_ion_remove(struct platform_device *pdev)
-{
- struct hisi_ion_dev *ipdev;
- int i;
-
- ipdev = platform_get_drvdata(pdev);
-
- for (i = 0; i < ipdev->data->nr; i++)
- ion_heap_destroy(ipdev->heaps[i]);
-
- ion_destroy_platform_data(ipdev->data);
- ion_device_destroy(ipdev->idev);
-
- return 0;
-}
-
-static const struct of_device_id hi6220_ion_match_table[] = {
- {.compatible = "hisilicon,hi6220-ion"},
- {},
-};
-
-static struct platform_driver hi6220_ion_driver = {
- .probe = hi6220_ion_probe,
- .remove = hi6220_ion_remove,
- .driver = {
- .name = "ion-hi6220",
- .of_match_table = hi6220_ion_match_table,
- },
-};
-
-static int __init hi6220_ion_init(void)
-{
- return platform_driver_register(&hi6220_ion_driver);
-}
-
-subsys_initcall(hi6220_ion_init);
diff --git a/drivers/staging/android/ion/ion_dummy_driver.c b/drivers/staging/android/ion/ion_dummy_driver.c
deleted file mode 100644
index cf5c010..0000000
--- a/drivers/staging/android/ion/ion_dummy_driver.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * drivers/gpu/ion/ion_dummy_driver.c
- *
- * Copyright (C) 2013 Linaro, 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.
- *
- */
-
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/memblock.h>
-#include <linux/sizes.h>
-#include <linux/io.h>
-#include "ion.h"
-#include "ion_priv.h"
-
-static struct ion_device *idev;
-static struct ion_heap **heaps;
-
-static void *carveout_ptr;
-static void *chunk_ptr;
-
-static struct ion_platform_heap dummy_heaps[] = {
- {
- .id = ION_HEAP_TYPE_SYSTEM,
- .type = ION_HEAP_TYPE_SYSTEM,
- .name = "system",
- },
- {
- .id = ION_HEAP_TYPE_SYSTEM_CONTIG,
- .type = ION_HEAP_TYPE_SYSTEM_CONTIG,
- .name = "system contig",
- },
- {
- .id = ION_HEAP_TYPE_CARVEOUT,
- .type = ION_HEAP_TYPE_CARVEOUT,
- .name = "carveout",
- .size = SZ_4M,
- },
- {
- .id = ION_HEAP_TYPE_CHUNK,
- .type = ION_HEAP_TYPE_CHUNK,
- .name = "chunk",
- .size = SZ_4M,
- .align = SZ_16K,
- .priv = (void *)(SZ_16K),
- },
-};
-
-static const struct ion_platform_data dummy_ion_pdata = {
- .nr = ARRAY_SIZE(dummy_heaps),
- .heaps = dummy_heaps,
-};
-
-static int __init ion_dummy_init(void)
-{
- int i, err;
-
- idev = ion_device_create(NULL);
- if (IS_ERR(idev))
- return PTR_ERR(idev);
- heaps = kcalloc(dummy_ion_pdata.nr, sizeof(struct ion_heap *),
- GFP_KERNEL);
- if (!heaps)
- return -ENOMEM;
-
-
- /* Allocate a dummy carveout heap */
- carveout_ptr = alloc_pages_exact(
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].size,
- GFP_KERNEL);
- if (carveout_ptr)
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].base =
- virt_to_phys(carveout_ptr);
- else
- pr_err("ion_dummy: Could not allocate carveout\n");
-
- /* Allocate a dummy chunk heap */
- chunk_ptr = alloc_pages_exact(
- dummy_heaps[ION_HEAP_TYPE_CHUNK].size,
- GFP_KERNEL);
- if (chunk_ptr)
- dummy_heaps[ION_HEAP_TYPE_CHUNK].base = virt_to_phys(chunk_ptr);
- else
- pr_err("ion_dummy: Could not allocate chunk\n");
-
- for (i = 0; i < dummy_ion_pdata.nr; i++) {
- struct ion_platform_heap *heap_data = &dummy_ion_pdata.heaps[i];
-
- if (heap_data->type == ION_HEAP_TYPE_CARVEOUT &&
- !heap_data->base)
- continue;
-
- if (heap_data->type == ION_HEAP_TYPE_CHUNK && !heap_data->base)
- continue;
-
- heaps[i] = ion_heap_create(heap_data);
- if (IS_ERR_OR_NULL(heaps[i])) {
- err = PTR_ERR(heaps[i]);
- goto err;
- }
- ion_device_add_heap(idev, heaps[i]);
- }
- return 0;
-err:
- for (i = 0; i < dummy_ion_pdata.nr; ++i)
- ion_heap_destroy(heaps[i]);
- kfree(heaps);
-
- if (carveout_ptr) {
- free_pages_exact(carveout_ptr,
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].size);
- carveout_ptr = NULL;
- }
- if (chunk_ptr) {
- free_pages_exact(chunk_ptr,
- dummy_heaps[ION_HEAP_TYPE_CHUNK].size);
- chunk_ptr = NULL;
- }
- return err;
-}
-device_initcall(ion_dummy_init);
-
-static void __exit ion_dummy_exit(void)
-{
- int i;
-
- ion_device_destroy(idev);
-
- for (i = 0; i < dummy_ion_pdata.nr; i++)
- ion_heap_destroy(heaps[i]);
- kfree(heaps);
-
- if (carveout_ptr) {
- free_pages_exact(carveout_ptr,
- dummy_heaps[ION_HEAP_TYPE_CARVEOUT].size);
- carveout_ptr = NULL;
- }
- if (chunk_ptr) {
- free_pages_exact(chunk_ptr,
- dummy_heaps[ION_HEAP_TYPE_CHUNK].size);
- chunk_ptr = NULL;
- }
-}
-__exitcall(ion_dummy_exit);
diff --git a/drivers/staging/android/ion/ion_of.c b/drivers/staging/android/ion/ion_of.c
deleted file mode 100644
index 7791c70..0000000
--- a/drivers/staging/android/ion/ion_of.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
- * Based on work from:
- * Andrew Andrianov <andrew@ncrmnt.org>
- * Google
- * The Linux Foundation
- *
- * 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.
- */
-
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/of_address.h>
-#include <linux/clk.h>
-#include <linux/dma-mapping.h>
-#include <linux/cma.h>
-#include <linux/dma-contiguous.h>
-#include <linux/io.h>
-#include <linux/of_reserved_mem.h>
-#include "ion.h"
-#include "ion_priv.h"
-#include "ion_of.h"
-
-static int ion_parse_dt_heap_common(struct device_node *heap_node,
- struct ion_platform_heap *heap,
- struct ion_of_heap *compatible)
-{
- int i;
-
- for (i = 0; compatible[i].name; i++) {
- if (of_device_is_compatible(heap_node, compatible[i].compat))
- break;
- }
-
- if (!compatible[i].name)
- return -ENODEV;
-
- heap->id = compatible[i].heap_id;
- heap->type = compatible[i].type;
- heap->name = compatible[i].name;
- heap->align = compatible[i].align;
-
- /* Some kind of callback function pointer? */
-
- pr_info("%s: id %d type %d name %s align %lx\n", __func__,
- heap->id, heap->type, heap->name, heap->align);
- return 0;
-}
-
-static int ion_setup_heap_common(struct platform_device *parent,
- struct device_node *heap_node,
- struct ion_platform_heap *heap)
-{
- int ret = 0;
-
- switch (heap->type) {
- case ION_HEAP_TYPE_CARVEOUT:
- case ION_HEAP_TYPE_CHUNK:
- if (heap->base && heap->size)
- return 0;
-
- ret = of_reserved_mem_device_init(heap->priv);
- break;
- default:
- break;
- }
-
- return ret;
-}
-
-struct ion_platform_data *ion_parse_dt(struct platform_device *pdev,
- struct ion_of_heap *compatible)
-{
- int num_heaps, ret;
- const struct device_node *dt_node = pdev->dev.of_node;
- struct device_node *node;
- struct ion_platform_heap *heaps;
- struct ion_platform_data *data;
- int i = 0;
-
- num_heaps = of_get_available_child_count(dt_node);
-
- if (!num_heaps)
- return ERR_PTR(-EINVAL);
-
- heaps = devm_kzalloc(&pdev->dev,
- sizeof(struct ion_platform_heap) * num_heaps,
- GFP_KERNEL);
- if (!heaps)
- return ERR_PTR(-ENOMEM);
-
- data = devm_kzalloc(&pdev->dev, sizeof(struct ion_platform_data),
- GFP_KERNEL);
- if (!data)
- return ERR_PTR(-ENOMEM);
-
- for_each_available_child_of_node(dt_node, node) {
- struct platform_device *heap_pdev;
-
- ret = ion_parse_dt_heap_common(node, &heaps[i], compatible);
- if (ret)
- return ERR_PTR(ret);
-
- heap_pdev = of_platform_device_create(node, heaps[i].name,
- &pdev->dev);
- if (!heap_pdev)
- return ERR_PTR(-ENOMEM);
- heap_pdev->dev.platform_data = &heaps[i];
-
- heaps[i].priv = &heap_pdev->dev;
-
- ret = ion_setup_heap_common(pdev, node, &heaps[i]);
- if (ret)
- goto out_err;
- i++;
- }
-
- data->heaps = heaps;
- data->nr = num_heaps;
- return data;
-
-out_err:
- for ( ; i >= 0; i--)
- if (heaps[i].priv)
- of_device_unregister(to_platform_device(heaps[i].priv));
-
- return ERR_PTR(ret);
-}
-
-void ion_destroy_platform_data(struct ion_platform_data *data)
-{
- int i;
-
- for (i = 0; i < data->nr; i++)
- if (data->heaps[i].priv)
- of_device_unregister(to_platform_device(
- data->heaps[i].priv));
-}
-
-#ifdef CONFIG_OF_RESERVED_MEM
-#include <linux/of.h>
-#include <linux/of_fdt.h>
-#include <linux/of_reserved_mem.h>
-
-static int rmem_ion_device_init(struct reserved_mem *rmem, struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct ion_platform_heap *heap = pdev->dev.platform_data;
-
- heap->base = rmem->base;
- heap->base = rmem->size;
- pr_debug("%s: heap %s base %pa size %pa dev %p\n", __func__,
- heap->name, &rmem->base, &rmem->size, dev);
- return 0;
-}
-
-static void rmem_ion_device_release(struct reserved_mem *rmem,
- struct device *dev)
-{
-}
-
-static const struct reserved_mem_ops rmem_dma_ops = {
- .device_init = rmem_ion_device_init,
- .device_release = rmem_ion_device_release,
-};
-
-static int __init rmem_ion_setup(struct reserved_mem *rmem)
-{
- phys_addr_t size = rmem->size;
-
- size = size / 1024;
-
- pr_info("Ion memory setup at %pa size %pa MiB\n",
- &rmem->base, &size);
- rmem->ops = &rmem_dma_ops;
- return 0;
-}
-
-RESERVEDMEM_OF_DECLARE(ion, "ion-region", rmem_ion_setup);
-#endif
diff --git a/drivers/staging/android/ion/ion_of.h b/drivers/staging/android/ion/ion_of.h
deleted file mode 100644
index 8241a17..0000000
--- a/drivers/staging/android/ion/ion_of.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Based on work from:
- * Andrew Andrianov <andrew@ncrmnt.org>
- * Google
- * The Linux Foundation
- *
- * 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.
- */
-
-#ifndef _ION_OF_H
-#define _ION_OF_H
-
-struct ion_of_heap {
- const char *compat;
- int heap_id;
- int type;
- const char *name;
- int align;
-};
-
-#define PLATFORM_HEAP(_compat, _id, _type, _name) \
-{ \
- .compat = _compat, \
- .heap_id = _id, \
- .type = _type, \
- .name = _name, \
- .align = PAGE_SIZE, \
-}
-
-struct ion_platform_data *ion_parse_dt(struct platform_device *pdev,
- struct ion_of_heap *compatible);
-
-void ion_destroy_platform_data(struct ion_platform_data *data);
-
-#endif
diff --git a/drivers/staging/android/ion/tegra/Makefile b/drivers/staging/android/ion/tegra/Makefile
deleted file mode 100644
index 808f1f5..0000000
--- a/drivers/staging/android/ion/tegra/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_ION_TEGRA) += tegra_ion.o
diff --git a/drivers/staging/android/ion/tegra/tegra_ion.c b/drivers/staging/android/ion/tegra/tegra_ion.c
deleted file mode 100644
index 49e55e5..0000000
--- a/drivers/staging/android/ion/tegra/tegra_ion.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * drivers/gpu/tegra/tegra_ion.c
- *
- * Copyright (C) 2011 Google, 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.
- *
- */
-
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include "../ion.h"
-#include "../ion_priv.h"
-
-static struct ion_device *idev;
-static int num_heaps;
-static struct ion_heap **heaps;
-
-static int tegra_ion_probe(struct platform_device *pdev)
-{
- struct ion_platform_data *pdata = pdev->dev.platform_data;
- int err;
- int i;
-
- num_heaps = pdata->nr;
-
- heaps = devm_kcalloc(&pdev->dev, pdata->nr,
- sizeof(struct ion_heap *), GFP_KERNEL);
-
- idev = ion_device_create(NULL);
- if (IS_ERR(idev))
- return PTR_ERR(idev);
-
- /* create the heaps as specified in the board file */
- for (i = 0; i < num_heaps; i++) {
- struct ion_platform_heap *heap_data = &pdata->heaps[i];
-
- heaps[i] = ion_heap_create(heap_data);
- if (IS_ERR_OR_NULL(heaps[i])) {
- err = PTR_ERR(heaps[i]);
- goto err;
- }
- ion_device_add_heap(idev, heaps[i]);
- }
- platform_set_drvdata(pdev, idev);
- return 0;
-err:
- for (i = 0; i < num_heaps; ++i)
- ion_heap_destroy(heaps[i]);
- return err;
-}
-
-static int tegra_ion_remove(struct platform_device *pdev)
-{
- struct ion_device *idev = platform_get_drvdata(pdev);
- int i;
-
- ion_device_destroy(idev);
- for (i = 0; i < num_heaps; i++)
- ion_heap_destroy(heaps[i]);
- return 0;
-}
-
-static struct platform_driver ion_driver = {
- .probe = tegra_ion_probe,
- .remove = tegra_ion_remove,
- .driver = { .name = "ion-tegra" }
-};
-
-module_platform_driver(ion_driver);
-
--
2.7.4