qemu/include/hw/misc/pca9552_regs.h
Cédric Le Goater 5141d4158c misc: add pca9552 LED blinker model
Specs are available here :

    https://www.nxp.com/docs/en/application-note/AN264.pdf

This is a simple model supporting the basic registers for led and GPIO
mode. The device also supports two blinking rates but not the model
yet.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180530064049.27976-7-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-08 13:15:32 +01:00

33 lines
1.1 KiB
C

/*
* PCA9552 I2C LED blinker registers
*
* Copyright (c) 2017-2018, IBM Corporation.
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* later. See the COPYING file in the top-level directory.
*/
#ifndef PCA9552_REGS_H
#define PCA9552_REGS_H
/*
* Bits [0:3] are used to address a specific register.
*/
#define PCA9552_INPUT0 0 /* read only input register 0 */
#define PCA9552_INPUT1 1 /* read only input register 1 */
#define PCA9552_PSC0 2 /* read/write frequency prescaler 0 */
#define PCA9552_PWM0 3 /* read/write PWM register 0 */
#define PCA9552_PSC1 4 /* read/write frequency prescaler 1 */
#define PCA9552_PWM1 5 /* read/write PWM register 1 */
#define PCA9552_LS0 6 /* read/write LED0 to LED3 selector */
#define PCA9552_LS1 7 /* read/write LED4 to LED7 selector */
#define PCA9552_LS2 8 /* read/write LED8 to LED11 selector */
#define PCA9552_LS3 9 /* read/write LED12 to LED15 selector */
/*
* Bit [4] is used to activate the Auto-Increment option of the
* register address
*/
#define PCA9552_AUTOINC (1 << 4)
#endif