/* * linux/drivers/video/bt455.h * * Copyright 2003 Thiemo Seufer * Copyright 2016 Maciej W. Rozycki * * This file is subject to the terms and conditions of the GNU General * Public License. See the file COPYING in the main directory of this * archive for more details. */ #include /* * Bt455 byte-wide registers, 32-bit aligned. */ struct bt455_regs { volatile u8 addr_cmap; u8 pad0[3]; volatile u8 addr_cmap_data; u8 pad1[3]; volatile u8 addr_clr; u8 pad2[3]; volatile u8 addr_ovly; u8 pad3[3]; }; static inline void bt455_select_reg(struct bt455_regs *regs, int ir) { mb(); regs->addr_cmap = ir & 0x0f; } static inline void bt455_reset_reg(struct bt455_regs *regs) { mb(); regs->addr_clr = 0; } /* * Read/write to a Bt455 color map register. */ static inline void bt455_read_cmap_next(struct bt455_regs *regs, u8 *grey) { mb(); regs->addr_cmap_data; rmb(); *grey = regs->addr_cmap_data & 0xf; rmb(); regs->addr_cmap_data; } static inline void bt455_write_cmap_next(struct bt455_regs *regs, u8 grey) { wmb(); regs->addr_cmap_data = 0x0; wmb(); regs->addr_cmap_data = grey & 0xf; wmb(); regs->addr_cmap_data = 0x0; } static inline void bt455_write_ovly_next(struct bt455_regs *regs, u8 grey) { wmb(); regs->addr_ovly = 0x0; wmb(); regs->addr_ovly = grey & 0xf; wmb(); regs->addr_ovly = 0x0; } static inline void bt455_read_cmap_entry(struct bt455_regs *regs, int cr, u8 *grey) { bt455_select_reg(regs, cr); bt455_read_cmap_next(regs, grey); } static inline void bt455_write_cmap_entry(struct bt455_regs *regs, int cr, u8 grey) { bt455_select_reg(regs, cr); bt455_write_cmap_next(regs, grey); } static inline void bt455_write_ovly_entry(struct bt455_regs *regs, u8 grey) { bt455_reset_reg(regs); bt455_write_ovly_next(regs, grey); } ound/soc/codecs/wm8523.c?id=424414947da3dd5cb0d60e4f299f7c51e472ae77'>treecommitdiff
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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-03 22:19:15 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-02-03 22:19:15 +0100
commit424414947da3dd5cb0d60e4f299f7c51e472ae77 (patch)
treea4067480c4256c80ae8f8438a3e4bb88e32050bc /sound/soc/codecs/wm8523.c
parenta3683e0c1410c5c8136a7a93b0336ce88d3b893a (diff)
parentd07830db1bdb254e4b50d366010b219286b8c937 (diff)
Merge tag 'usb-serial-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes: USB-serial fixes for v4.10-rc7 One more device ID for pl2303. Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'sound/soc/codecs/wm8523.c')