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3976e974df
Up to now ili9320_remove() returns zero unconditionally. Make it return void instead which makes it easier to see in the callers that there is no error to handle. Also the return value of spi remove callbacks is ignored anyway. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20211019120927.3822792-1-u.kleine-koenig@pengutronix.de
77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* drivers/video/backlight/ili9320.h
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*
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* ILI9320 LCD controller driver core.
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*
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* Copyright 2007 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* http://armlinux.simtec.co.uk/
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*/
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/* Holder for register and value pairs. */
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struct ili9320_reg {
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unsigned short address;
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unsigned short value;
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};
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struct ili9320;
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struct ili9320_client {
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const char *name;
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int (*init)(struct ili9320 *ili, struct ili9320_platdata *cfg);
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};
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/* Device attached via an SPI bus. */
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struct ili9320_spi {
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struct spi_device *dev;
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struct spi_message message;
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struct spi_transfer xfer[2];
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unsigned char id;
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unsigned char buffer_addr[4];
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unsigned char buffer_data[4];
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};
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/* ILI9320 device state. */
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struct ili9320 {
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union {
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struct ili9320_spi spi; /* SPI attachged device. */
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} access; /* Register access method. */
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struct device *dev;
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struct lcd_device *lcd; /* LCD device we created. */
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struct ili9320_client *client;
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struct ili9320_platdata *platdata;
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int power; /* current power state. */
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int initialised;
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unsigned short display1;
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unsigned short power1;
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int (*write)(struct ili9320 *ili, unsigned int reg, unsigned int val);
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};
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/* ILI9320 register access routines */
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extern int ili9320_write(struct ili9320 *ili,
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unsigned int reg, unsigned int value);
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extern int ili9320_write_regs(struct ili9320 *ili,
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const struct ili9320_reg *values,
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int nr_values);
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/* Device probe */
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extern int ili9320_probe_spi(struct spi_device *spi,
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struct ili9320_client *cli);
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extern void ili9320_remove(struct ili9320 *lcd);
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extern void ili9320_shutdown(struct ili9320 *lcd);
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/* PM */
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extern int ili9320_suspend(struct ili9320 *lcd);
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extern int ili9320_resume(struct ili9320 *lcd);
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