26bd43a759
Implement a simple wrapper for platform module to build komeda to module,
Also add a very simple D71 layer code to show how to discover a product.
Komeda driver direct bind the product ENTRY function xxx_identity to DT
compatible name like:
d71_product = {
.product_id = MALIDP_D71_PRODUCT_ID,
.identify = d71_identify,
},
const struct of_device_id komeda_of_match[] = {
{ .compatible = "arm,mali-d71", .data = &d71_product, },
{},
};
Then when linux found a matched DT node and call driver to probe, we can
easily get the of data, and call into the product to do the identify:
komeda_bind()
{
...
product = of_device_get_match_data(dev);
product->identify();
...
}
Changes in v4:
- Replaced kzalloc with devm_kzalloc
Changes in v3:
- Fixed style problem found by checkpatch.pl --strict.
Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
42 lines
844 B
C
42 lines
844 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
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* Author: James.Qian.Wang <james.qian.wang@arm.com>
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*
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*/
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#ifndef _MALIDP_IO_H_
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#define _MALIDP_IO_H_
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#include <linux/io.h>
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static inline u32
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malidp_read32(u32 __iomem *base, u32 offset)
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{
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return readl((base + (offset >> 2)));
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}
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static inline void
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malidp_write32(u32 __iomem *base, u32 offset, u32 v)
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{
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writel(v, (base + (offset >> 2)));
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}
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static inline void
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malidp_write32_mask(u32 __iomem *base, u32 offset, u32 m, u32 v)
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{
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u32 tmp = malidp_read32(base, offset);
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tmp &= (~m);
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malidp_write32(base, offset, v | tmp);
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}
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static inline void
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malidp_write_group(u32 __iomem *base, u32 offset, int num, const u32 *values)
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{
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int i;
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for (i = 0; i < num; i++)
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malidp_write32(base, offset + i * 4, values[i]);
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}
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#endif /*_MALIDP_IO_H_*/
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