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lib: utils/gpio: Generate FDT gpio driver list at compile-time
Instead of having FDT gpio driver list hard-coded in the C source, we generate it using carray.sh at compile-time. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>
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998ed43fde
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4 changed files with 17 additions and 10 deletions
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@ -12,6 +12,8 @@
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#include <sbi_utils/gpio/gpio.h>
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struct fdt_phandle_args;
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/** FDT based GPIO driver */
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struct fdt_gpio {
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const struct fdt_match *match_table;
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@ -12,11 +12,9 @@
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/gpio/fdt_gpio.h>
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extern struct fdt_gpio fdt_gpio_sifive;
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static struct fdt_gpio *gpio_drivers[] = {
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&fdt_gpio_sifive
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};
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/* List of FDT gpio drivers generated at compile time */
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extern struct fdt_gpio *fdt_gpio_drivers[];
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extern unsigned long fdt_gpio_drivers_size;
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static struct fdt_gpio *fdt_gpio_driver(struct gpio_chip *chip)
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{
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@ -25,9 +23,9 @@ static struct fdt_gpio *fdt_gpio_driver(struct gpio_chip *chip)
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if (!chip)
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return NULL;
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for (pos = 0; pos < array_size(gpio_drivers); pos++) {
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if (chip->driver == gpio_drivers[pos])
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return gpio_drivers[pos];
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for (pos = 0; pos < fdt_gpio_drivers_size; pos++) {
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if (chip->driver == fdt_gpio_drivers[pos])
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return fdt_gpio_drivers[pos];
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}
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return NULL;
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@ -49,8 +47,8 @@ static int fdt_gpio_init(void *fdt, u32 phandle)
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return SBI_EINVAL;
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/* Try all GPIO drivers one-by-one */
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for (pos = 0; pos < array_size(gpio_drivers); pos++) {
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drv = gpio_drivers[pos];
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for (pos = 0; pos < fdt_gpio_drivers_size; pos++) {
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drv = fdt_gpio_drivers[pos];
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match = fdt_match_node(fdt, nodeoff, drv->match_table);
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if (match && drv->init) {
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3
lib/utils/gpio/fdt_gpio_drivers.carray
Normal file
3
lib/utils/gpio/fdt_gpio_drivers.carray
Normal file
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@ -0,0 +1,3 @@
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HEADER: sbi_utils/gpio/fdt_gpio.h
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TYPE: struct fdt_gpio
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NAME: fdt_gpio_drivers
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@ -8,5 +8,9 @@
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#
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libsbiutils-objs-y += gpio/fdt_gpio.o
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libsbiutils-objs-y += gpio/fdt_gpio_drivers.o
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carray-fdt_gpio_drivers-y += fdt_gpio_sifive
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libsbiutils-objs-y += gpio/fdt_gpio_sifive.o
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libsbiutils-objs-y += gpio/gpio.o
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