From 5141d4158cf0dbdc13e42f175d1718d40b789f75 Mon Sep 17 00:00:00 2001 From: Cédric Le Goater Date: Fri, 8 Jun 2018 13:15:32 +0100 Subject: 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 Reviewed-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Message-id: 20180530064049.27976-7-clg@kaod.org Signed-off-by: Peter Maydell --- include/hw/misc/pca9552.h | 32 ++++++++++++++++++++++++++++++++ include/hw/misc/pca9552_regs.h | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) create mode 100644 include/hw/misc/pca9552.h create mode 100644 include/hw/misc/pca9552_regs.h (limited to 'include') diff --git a/include/hw/misc/pca9552.h b/include/hw/misc/pca9552.h new file mode 100644 index 0000000000..ebb43c63fe --- /dev/null +++ b/include/hw/misc/pca9552.h @@ -0,0 +1,32 @@ +/* + * PCA9552 I2C LED blinker + * + * 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_H +#define PCA9552_H + +#include "hw/i2c/i2c.h" + +#define TYPE_PCA9552 "pca9552" +#define PCA9552(obj) OBJECT_CHECK(PCA9552State, (obj), TYPE_PCA9552) + +#define PCA9552_NR_REGS 10 + +typedef struct PCA9552State { + /*< private >*/ + I2CSlave i2c; + /*< public >*/ + + uint8_t len; + uint8_t pointer; + + uint8_t regs[PCA9552_NR_REGS]; + uint8_t max_reg; + uint8_t nr_leds; +} PCA9552State; + +#endif diff --git a/include/hw/misc/pca9552_regs.h b/include/hw/misc/pca9552_regs.h new file mode 100644 index 0000000000..d8051cfbd6 --- /dev/null +++ b/include/hw/misc/pca9552_regs.h @@ -0,0 +1,32 @@ +/* + * 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 -- cgit v1.2.3-55-g7522