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path: root/qemu/roms/u-boot/drivers/gpio/sandbox.c
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Diffstat (limited to 'qemu/roms/u-boot/drivers/gpio/sandbox.c')
-rw-r--r--qemu/roms/u-boot/drivers/gpio/sandbox.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/qemu/roms/u-boot/drivers/gpio/sandbox.c b/qemu/roms/u-boot/drivers/gpio/sandbox.c
deleted file mode 100644
index 22b6a5f79..000000000
--- a/qemu/roms/u-boot/drivers/gpio/sandbox.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * Copyright (c) 2011 The Chromium OS Authors.
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <dm.h>
-#include <fdtdec.h>
-#include <malloc.h>
-#include <asm/gpio.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/* Flags for each GPIO */
-#define GPIOF_OUTPUT (1 << 0) /* Currently set as an output */
-#define GPIOF_HIGH (1 << 1) /* Currently set high */
-#define GPIOF_RESERVED (1 << 2) /* Is in use / requested */
-
-struct gpio_state {
- const char *label; /* label given by requester */
- u8 flags; /* flags (GPIOF_...) */
-};
-
-/* Access routines for GPIO state */
-static u8 *get_gpio_flags(struct device *dev, unsigned offset)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
- struct gpio_state *state = dev_get_priv(dev);
-
- if (offset >= uc_priv->gpio_count) {
- static u8 invalid_flags;
- printf("sandbox_gpio: error: invalid gpio %u\n", offset);
- return &invalid_flags;
- }
-
- return &state[offset].flags;
-}
-
-static int get_gpio_flag(struct device *dev, unsigned offset, int flag)
-{
- return (*get_gpio_flags(dev, offset) & flag) != 0;
-}
-
-static int set_gpio_flag(struct device *dev, unsigned offset, int flag,
- int value)
-{
- u8 *gpio = get_gpio_flags(dev, offset);
-
- if (value)
- *gpio |= flag;
- else
- *gpio &= ~flag;
-
- return 0;
-}
-
-static int check_reserved(struct device *dev, unsigned offset,
- const char *func)
-{
- if (!get_gpio_flag(dev, offset, GPIOF_RESERVED)) {
- printf("sandbox_gpio: %s: error: offset %u not reserved\n",
- func, offset);
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Back-channel sandbox-internal-only access to GPIO state
- */
-
-int sandbox_gpio_get_value(struct device *dev, unsigned offset)
-{
- if (get_gpio_flag(dev, offset, GPIOF_OUTPUT))
- debug("sandbox_gpio: get_value on output gpio %u\n", offset);
- return get_gpio_flag(dev, offset, GPIOF_HIGH);
-}
-
-int sandbox_gpio_set_value(struct device *dev, unsigned offset, int value)
-{
- return set_gpio_flag(dev, offset, GPIOF_HIGH, value);
-}
-
-int sandbox_gpio_get_direction(struct device *dev, unsigned offset)
-{
- return get_gpio_flag(dev, offset, GPIOF_OUTPUT);
-}
-
-int sandbox_gpio_set_direction(struct device *dev, unsigned offset, int output)
-{
- return set_gpio_flag(dev, offset, GPIOF_OUTPUT, output);
-}
-
-/*
- * These functions implement the public interface within U-Boot
- */
-
-/* set GPIO port 'offset' as an input */
-static int sb_gpio_direction_input(struct device *dev, unsigned offset)
-{
- debug("%s: offset:%u\n", __func__, offset);
-
- if (check_reserved(dev, offset, __func__))
- return -1;
-
- return sandbox_gpio_set_direction(dev, offset, 0);
-}
-
-/* set GPIO port 'offset' as an output, with polarity 'value' */
-static int sb_gpio_direction_output(struct device *dev, unsigned offset,
- int value)
-{
- debug("%s: offset:%u, value = %d\n", __func__, offset, value);
-
- if (check_reserved(dev, offset, __func__))
- return -1;
-
- return sandbox_gpio_set_direction(dev, offset, 1) |
- sandbox_gpio_set_value(dev, offset, value);
-}
-
-/* read GPIO IN value of port 'offset' */
-static int sb_gpio_get_value(struct device *dev, unsigned offset)
-{
- debug("%s: offset:%u\n", __func__, offset);
-
- if (check_reserved(dev, offset, __func__))
- return -1;
-
- return sandbox_gpio_get_value(dev, offset);
-}
-
-/* write GPIO OUT value to port 'offset' */
-static int sb_gpio_set_value(struct device *dev, unsigned offset, int value)
-{
- debug("%s: offset:%u, value = %d\n", __func__, offset, value);
-
- if (check_reserved(dev, offset, __func__))
- return -1;
-
- if (!sandbox_gpio_get_direction(dev, offset)) {
- printf("sandbox_gpio: error: set_value on input gpio %u\n",
- offset);
- return -1;
- }
-
- return sandbox_gpio_set_value(dev, offset, value);
-}
-
-static int sb_gpio_request(struct device *dev, unsigned offset,
- const char *label)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
- struct gpio_state *state = dev_get_priv(dev);
-
- debug("%s: offset:%u, label:%s\n", __func__, offset, label);
-
- if (offset >= uc_priv->gpio_count) {
- printf("sandbox_gpio: error: invalid gpio %u\n", offset);
- return -1;
- }
-
- if (get_gpio_flag(dev, offset, GPIOF_RESERVED)) {
- printf("sandbox_gpio: error: gpio %u already reserved\n",
- offset);
- return -1;
- }
-
- state[offset].label = label;
- return set_gpio_flag(dev, offset, GPIOF_RESERVED, 1);
-}
-
-static int sb_gpio_free(struct device *dev, unsigned offset)
-{
- struct gpio_state *state = dev_get_priv(dev);
-
- debug("%s: offset:%u\n", __func__, offset);
-
- if (check_reserved(dev, offset, __func__))
- return -1;
-
- state[offset].label = NULL;
- return set_gpio_flag(dev, offset, GPIOF_RESERVED, 0);
-}
-
-static int sb_gpio_get_state(struct device *dev, unsigned int offset,
- char *buf, int bufsize)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
- struct gpio_state *state = dev_get_priv(dev);
- const char *label;
-
- label = state[offset].label;
- snprintf(buf, bufsize, "%s%d: %s: %d [%c]%s%s",
- uc_priv->bank_name ? uc_priv->bank_name : "", offset,
- sandbox_gpio_get_direction(dev, offset) ? "out" : " in",
- sandbox_gpio_get_value(dev, offset),
- get_gpio_flag(dev, offset, GPIOF_RESERVED) ? 'x' : ' ',
- label ? " " : "",
- label ? label : "");
-
- return 0;
-}
-
-static const struct dm_gpio_ops gpio_sandbox_ops = {
- .request = sb_gpio_request,
- .free = sb_gpio_free,
- .direction_input = sb_gpio_direction_input,
- .direction_output = sb_gpio_direction_output,
- .get_value = sb_gpio_get_value,
- .set_value = sb_gpio_set_value,
- .get_state = sb_gpio_get_state,
-};
-
-static int sandbox_gpio_ofdata_to_platdata(struct device *dev)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-
- uc_priv->gpio_count = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
- "num-gpios", 0);
- uc_priv->bank_name = fdt_getprop(gd->fdt_blob, dev->of_offset,
- "gpio-bank-name", NULL);
-
- return 0;
-}
-
-static int gpio_sandbox_probe(struct device *dev)
-{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-
- if (dev->of_offset == -1) {
- /* Tell the uclass how many GPIOs we have */
- uc_priv->gpio_count = CONFIG_SANDBOX_GPIO_COUNT;
- }
-
- dev->priv = calloc(sizeof(struct gpio_state), uc_priv->gpio_count);
-
- return 0;
-}
-
-static const struct device_id sandbox_gpio_ids[] = {
- { .compatible = "sandbox,gpio" },
- { }
-};
-
-U_BOOT_DRIVER(gpio_sandbox) = {
- .name = "gpio_sandbox",
- .id = UCLASS_GPIO,
- .of_match = sandbox_gpio_ids,
- .ofdata_to_platdata = sandbox_gpio_ofdata_to_platdata,
- .probe = gpio_sandbox_probe,
- .ops = &gpio_sandbox_ops,
-};