root/drivers/gpu/drm/arm/display/include/malidp_io.h

INCLUDED FROM

DEFINITIONS

1. malidp_read32
2. malidp_write32
3. malidp_write64
4. malidp_write32_mask
5. malidp_write_group

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
   4  * Author: James.Qian.Wang <james.qian.wang@arm.com>
   5  *
   6  */
   7 #ifndef _MALIDP_IO_H_
   8 #define _MALIDP_IO_H_
   9 
  10 #include <linux/io.h>
  11 
  12 static inline u32
  13 malidp_read32(u32 __iomem *base, u32 offset)
  14 {
  15         return readl((base + (offset >> 2)));
  16 }
  17 
  18 static inline void
  19 malidp_write32(u32 __iomem *base, u32 offset, u32 v)
  20 {
  21         writel(v, (base + (offset >> 2)));
  22 }
  23 
  24 static inline void
  25 malidp_write64(u32 __iomem *base, u32 offset, u64 v)
  26 {
  27         writel(lower_32_bits(v), (base + (offset >> 2)));
  28         writel(upper_32_bits(v), (base + (offset >> 2) + 1));
  29 }
  30 
  31 static inline void
  32 malidp_write32_mask(u32 __iomem *base, u32 offset, u32 m, u32 v)
  33 {
  34         u32 tmp = malidp_read32(base, offset);
  35 
  36         tmp &= (~m);
  37         malidp_write32(base, offset, v | tmp);
  38 }
  39 
  40 static inline void
  41 malidp_write_group(u32 __iomem *base, u32 offset, int num, const u32 *values)
  42 {
  43         int i;
  44 
  45         for (i = 0; i < num; i++)
  46                 malidp_write32(base, offset + i * 4, values[i]);
  47 }
  48 
  49 #endif /*_MALIDP_IO_H_*/