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drivers/lcd: Add FT80x controls for the case where the audio amplifier is controlled by FT80x GPIOs vs MCU gpios.

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This commit is contained in:
Gregory Nutt
2018-02-27 08:45:34 -06:00
parent 05f056a770
commit 8fe9e81183
7 changed files with 136 additions and 1 deletions
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include/nuttx/lcd/ft80x.h
+24
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@@ -196,6 +196,11 @@
* Description: Change the backlight intensity with a controllable fade.
* Argument: A reference to an instance of struct ft80x_fade_s below.
* Returns: None.
*
* FT80X_IOC_AUDIO:
* Description: Enable/disable an external audio amplifer.
* Argument: 0=disable; 1=enable.
* Returns: None.
*/
#define FT80X_IOC_CREATEDL _LCDIOC(FT80X_NIOCTL_BASE + 0)
@@ -213,6 +218,7 @@
#define FT80X_IOC_PUTREGS _LCDIOC(FT80X_NIOCTL_BASE + 12)
#define FT80X_IOC_EVENTNOTIFY _LCDIOC(FT80X_NIOCTL_BASE + 13)
#define FT80X_IOC_FADE _LCDIOC(FT80X_NIOCTL_BASE + 14)
#define FT80X_IOC_AUDIO _LCDIOC(FT80X_NIOCTL_BASE + 15)
/* FT80x Memory Map *************************************************************************/
@@ -564,6 +570,19 @@
#define FT08X_NOTE_B7 ((uint16_t)107 << 8) /* B7, 3951.1 Hz */
#define FT08X_NOTE_C8 ((uint16_t)108 << 8) /* C8, 4186.0 Hz */
/* FT80X_REG_GPIO */
/* Bits 0-1: GPIO 0-1 value */
/* Bits 2-3: MISO and nINT drive strength */
/* Bits 4: Display signal drive strength */
#define FT80X_GPIO_DRIVE_SHIFT 5 /* Bits 5-6: GPIO output drive strength */
#define FT80X_GPIO_DRIVE_MASK (3 << FT80X_GPIO_DRIVE_SHIFT)
# define FT80X_GPIO_DRIVE_4MA (0 << FT80X_GPIO_DRIVE_SHIFT)
# define FT80X_GPIO_DRIVE_8MA (1 << FT80X_GPIO_DRIVE_SHIFT)
# define FT80X_GPIO_DRIVE_12MA (2 << FT80X_GPIO_DRIVE_SHIFT)
# define FT80X_GPIO_DRIVE_16MA (3 << FT80X_GPIO_DRIVE_SHIFT)
/* Bit 7: GPIO 7 value */
/* FT80X_REG_PLAYBACK_FORMAT */
#define AUDIO_FORMAT_LINEAR 0 /* Linear Sample format */
@@ -1021,6 +1040,9 @@
*
* N/A O nSHDN Audio shutdown (active low)
*
* REVISIT: In all of the architectures that I am aware of, the audio amplifier is
* controlled by GPIOs driven by the FT80x and, hence, not controllable by board logic.
*
* SCL/SDA, SCLK/MISO/MOSI/nCS are handled by generic I2C or SPI logic. nInt and nPD are
* directly managed by this interface.
*/
@@ -1061,7 +1083,9 @@ struct ft80x_config_s
CODE void (*enable)(FAR const struct ft80x_config_s *lower, bool enable);
CODE void (*clear)(FAR const struct ft80x_config_s *lower);
CODE void (*pwrdown)(FAR const struct ft80x_config_s *lower, bool pwrdown);
#ifdef CONFIG_LCD_FT80X_AUDIO_MCUSHUTDOWN
CODE void (*audio)(FAR const struct ft80x_config_s *lower, bool enable);
#endif
#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
CODE void (*destroy)(FAR const struct ft80x_config_s *lower);
#endif
include/nuttx/lcd/lcd_ioctl.h
+1 -1
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@@ -50,7 +50,7 @@
/* IOCTL commands set aside for FT80x character driver */
#define FT80X_NIOCTL_CMDS 15
#define FT80X_NIOCTL_CMDS 16
#define FT80X_NIOCTL_BASE 0x0001
#endif /* __INCLUDE_NUTTX_INPUT_LCD_IOCTL_H */