^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Support code for the SCOOP interface found on various Sharp PDAs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2004 Richard Purdie
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Based on code written by Sharp/Lineo for 2.4 kernels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/gpio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/hardware/scoop.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* PCMCIA to Scoop linkage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) There is no easy way to link multiple scoop devices into one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) single entity for the pxa2xx_pcmcia device so this structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) is used which is setup by the platform code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) This file is never modular so this symbol is always
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) accessile to the board support files.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct scoop_pcmcia_config *platform_scoop_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) EXPORT_SYMBOL(platform_scoop_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct scoop_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct gpio_chip gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) spinlock_t scoop_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) unsigned short suspend_clr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) unsigned short suspend_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u32 scoop_gpwr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) void reset_scoop(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct scoop_dev *sdev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) iowrite16(0x0100, sdev->base + SCOOP_MCR); /* 00 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) iowrite16(0x0000, sdev->base + SCOOP_CDR); /* 04 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) iowrite16(0x0000, sdev->base + SCOOP_CCR); /* 10 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) iowrite16(0x0000, sdev->base + SCOOP_IMR); /* 18 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) iowrite16(0x00FF, sdev->base + SCOOP_IRM); /* 14 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) iowrite16(0x0000, sdev->base + SCOOP_ISR); /* 1C */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) iowrite16(0x0000, sdev->base + SCOOP_IRM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static void __scoop_gpio_set(struct scoop_dev *sdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned offset, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned short gpwr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) gpwr = ioread16(sdev->base + SCOOP_GPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) gpwr |= 1 << (offset + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) gpwr &= ~(1 << (offset + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) iowrite16(gpwr, sdev->base + SCOOP_GPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static void scoop_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct scoop_dev *sdev = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) spin_lock_irqsave(&sdev->scoop_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) __scoop_gpio_set(sdev, offset, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) spin_unlock_irqrestore(&sdev->scoop_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static int scoop_gpio_get(struct gpio_chip *chip, unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct scoop_dev *sdev = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* XXX: I'm unsure, but it seems so */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return !!(ioread16(sdev->base + SCOOP_GPRR) & (1 << (offset + 1)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static int scoop_gpio_direction_input(struct gpio_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct scoop_dev *sdev = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) unsigned short gpcr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) spin_lock_irqsave(&sdev->scoop_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) gpcr = ioread16(sdev->base + SCOOP_GPCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) gpcr &= ~(1 << (offset + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) iowrite16(gpcr, sdev->base + SCOOP_GPCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) spin_unlock_irqrestore(&sdev->scoop_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int scoop_gpio_direction_output(struct gpio_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) unsigned offset, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct scoop_dev *sdev = gpiochip_get_data(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) unsigned short gpcr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) spin_lock_irqsave(&sdev->scoop_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) __scoop_gpio_set(sdev, offset, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) gpcr = ioread16(sdev->base + SCOOP_GPCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) gpcr |= 1 << (offset + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) iowrite16(gpcr, sdev->base + SCOOP_GPCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) spin_unlock_irqrestore(&sdev->scoop_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) unsigned short read_scoop_reg(struct device *dev, unsigned short reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct scoop_dev *sdev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return ioread16(sdev->base + reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) void write_scoop_reg(struct device *dev, unsigned short reg, unsigned short data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct scoop_dev *sdev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) iowrite16(data, sdev->base + reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) EXPORT_SYMBOL(reset_scoop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) EXPORT_SYMBOL(read_scoop_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) EXPORT_SYMBOL(write_scoop_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static void check_scoop_reg(struct scoop_dev *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) unsigned short mcr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) mcr = ioread16(sdev->base + SCOOP_MCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if ((mcr & 0x100) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) iowrite16(0x0101, sdev->base + SCOOP_MCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int scoop_suspend(struct platform_device *dev, pm_message_t state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct scoop_dev *sdev = platform_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) check_scoop_reg(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) sdev->scoop_gpwr = ioread16(sdev->base + SCOOP_GPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) iowrite16((sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set, sdev->base + SCOOP_GPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static int scoop_resume(struct platform_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct scoop_dev *sdev = platform_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) check_scoop_reg(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) iowrite16(sdev->scoop_gpwr, sdev->base + SCOOP_GPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #define scoop_suspend NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #define scoop_resume NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static int scoop_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct scoop_dev *devptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct scoop_config *inf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (!mem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) devptr = kzalloc(sizeof(struct scoop_dev), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (!devptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) spin_lock_init(&devptr->scoop_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) inf = pdev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) devptr->base = ioremap(mem->start, resource_size(mem));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!devptr->base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) goto err_ioremap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) platform_set_drvdata(pdev, devptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) printk("Sharp Scoop Device found at 0x%08x -> 0x%8p\n",(unsigned int)mem->start, devptr->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) iowrite16(0x0140, devptr->base + SCOOP_MCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) reset_scoop(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) iowrite16(0x0000, devptr->base + SCOOP_CPR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) iowrite16(inf->io_dir & 0xffff, devptr->base + SCOOP_GPCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) iowrite16(inf->io_out & 0xffff, devptr->base + SCOOP_GPWR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) devptr->suspend_clr = inf->suspend_clr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) devptr->suspend_set = inf->suspend_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) devptr->gpio.base = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (inf->gpio_base != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) devptr->gpio.label = dev_name(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) devptr->gpio.base = inf->gpio_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) devptr->gpio.ngpio = 12; /* PA11 = 0, PA12 = 1, etc. up to PA22 = 11 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) devptr->gpio.set = scoop_gpio_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) devptr->gpio.get = scoop_gpio_get;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) devptr->gpio.direction_input = scoop_gpio_direction_input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) devptr->gpio.direction_output = scoop_gpio_direction_output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) ret = gpiochip_add_data(&devptr->gpio, devptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) goto err_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) err_gpio:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) platform_set_drvdata(pdev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) err_ioremap:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) iounmap(devptr->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) kfree(devptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static int scoop_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct scoop_dev *sdev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (!sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) if (sdev->gpio.base != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) gpiochip_remove(&sdev->gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) platform_set_drvdata(pdev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) iounmap(sdev->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) kfree(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static struct platform_driver scoop_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) .probe = scoop_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) .remove = scoop_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) .suspend = scoop_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) .resume = scoop_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) .name = "sharp-scoop",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static int __init scoop_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return platform_driver_register(&scoop_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) subsys_initcall(scoop_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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