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drivers: fpga: add checks for optional properties of iCE40

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Add checks in the GPIO bitbang mode to avoid a fault for missing
configuration in the devicetree.
Fixes #80850

Signed-off-by: Benedikt Schmidt <benedikt.schmidt@embedded-solutions.at>
This commit is contained in:
Benedikt Schmidt 2024-11-05 13:19:32 +01:00 • committed by Mahesh Mahadevan
commit 035b139f64
1 changed files with 30 additions and 0 deletions
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30
drivers/fpga/fpga_ice40.c
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@ -207,6 +207,26 @@ static int fpga_ice40_load_gpio(const struct device *dev, uint32_t *image_ptr, u
struct fpga_ice40_data *data = dev->data;
const struct fpga_ice40_config *config = dev->config;
if (!device_is_ready(config->clk.port)) {
LOG_ERR("%s: GPIO for clk is not ready", dev->name);
return -ENODEV;
}
if (!device_is_ready(config->pico.port)) {
LOG_ERR("%s: GPIO for pico is not ready", dev->name);
return -ENODEV;
}
if (config->set == NULL) {
LOG_ERR("%s: set register was not specified", dev->name);
return -EFAULT;
}
if (config->clear == NULL) {
LOG_ERR("%s: clear register was not specified", dev->name);
return -EFAULT;
}
/* prepare masks */
cs = BIT(config->bus.config.cs.gpio.pin);
clk = BIT(config->clk.pin);
@ -502,6 +522,16 @@ static int fpga_ice40_init(const struct device *dev)
int ret;
const struct fpga_ice40_config *config = dev->config;
if (!device_is_ready(config->creset.port)) {
LOG_ERR("%s: GPIO for creset is not ready", dev->name);
return -ENODEV;
}
if (!device_is_ready(config->cdone.port)) {
LOG_ERR("%s: GPIO for cdone is not ready", dev->name);
return -ENODEV;
}
ret = gpio_pin_configure_dt(&config->creset, GPIO_OUTPUT_HIGH);
if (ret < 0) {
LOG_ERR("failed to configure CRESET: %d", ret);