diff options
Diffstat (limited to 'drivers/media/pci/mgb4/mgb4_regs.h')
| -rw-r--r-- | drivers/media/pci/mgb4/mgb4_regs.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/media/pci/mgb4/mgb4_regs.h b/drivers/media/pci/mgb4/mgb4_regs.h new file mode 100644 index 000000000000..c45180890730 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_regs.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma <martin.tuma@digiteqautomotive.com> + */ + +#ifndef __MGB4_REGS_H__ +#define __MGB4_REGS_H__ + +#include <linux/io.h> + +struct mgb4_regs { + resource_size_t mapbase; + resource_size_t mapsize; + void __iomem *membase; +}; + +#define mgb4_write_reg(regs, offset, val) \ + iowrite32(val, (regs)->membase + (offset)) +#define mgb4_read_reg(regs, offset) \ + ioread32((regs)->membase + (offset)) + +static inline void mgb4_mask_reg(struct mgb4_regs *regs, u32 reg, u32 mask, + u32 val) +{ + u32 ret = mgb4_read_reg(regs, reg); + + val |= ret & ~mask; + mgb4_write_reg(regs, reg, val); +} + +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs); +void mgb4_regs_free(struct mgb4_regs *regs); + +#endif |