Commit a3841086 authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

drm/ast: Remove little-endianism from I/O helpers 



Replace one call to ast_io_write16() with two calls to ast_io_write8()
in ast_set_index_reg(). The combined 16-bit-wide write of an index
register and the corresponding data register only works on little-
endian systems. Write both registers independent from each other.

Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: default avatarJavier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230221155745.27484-2-tzimmermann@suse.de
parent ba3f6db4

drivers/gpu/drm/ast/ast_drv.h

+3 −1
Original line number Diff line number Diff line
@@ -282,7 +282,9 @@ static inline void ast_set_index_reg(struct ast_private *ast, 
				     uint32_t base, uint8_t index,

				     uint8_t val)

{

	ast_io_write16(ast, base, ((u16)val << 8) | index);

	ast_io_write8(ast, base, index);

	++base;

	ast_io_write8(ast, base, val);

}



void ast_set_index_reg_mask(struct ast_private *ast,