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Diffstat (limited to 'driver/platform.c')
-rw-r--r--driver/platform.c30
1 files changed, 15 insertions, 15 deletions
diff --git a/driver/platform.c b/driver/platform.c
index c41d47b..73d691f 100644
--- a/driver/platform.c
+++ b/driver/platform.c
@@ -24,23 +24,23 @@ int lork_probe(struct platform_device* dev) {
printk("lork: configure pin %u w/ mode 0x%02x\n", pin, gpio_mode);
// find the multiplexer that controls pin
- // size_t len = of_property_count_u32_elems(gpio1, "gpio-ranges");
- // struct device_node* am33xx_pinmux = NULL;
- // for (size_t i = 0; i < len; i += 4) {
- // uint32_t phandle, pin_start, pin_offset, pin_size;
- // of_property_read_u32_index(gpio1, "gpio-ranges", i+0, &phandle);
- // of_property_read_u32_index(gpio1, "gpio-ranges", i+1, &pin_start);
- // of_property_read_u32_index(gpio1, "gpio-ranges", i+2, &pin_offset);
- // of_property_read_u32_index(gpio1, "gpio-ranges", i+3, &pin_size);
+ size_t len = of_property_count_u32_elems(gpio1, "gpio-ranges");
+ struct device_node* am33xx_pinmux = NULL;
+ for (size_t i = 0; i < len; i += 4) {
+ uint32_t phandle, pin_start, pin_offset, pin_size;
+ of_property_read_u32_index(gpio1, "gpio-ranges", i+0, &phandle);
+ of_property_read_u32_index(gpio1, "gpio-ranges", i+1, &pin_start);
+ of_property_read_u32_index(gpio1, "gpio-ranges", i+2, &pin_offset);
+ of_property_read_u32_index(gpio1, "gpio-ranges", i+3, &pin_size);
- // // get phandle for multiplexer corresponding to configured pin number
- // if (pin_start > pin || pin >= pin_start + pin_size) continue;
+ // get phandle for multiplexer corresponding to configured pin number
+ if (pin_start > pin || pin >= pin_start + pin_size) continue;
- // am33xx_pinmux = of_find_node_by_phandle(phandle);
- // printk("0x%02x, %u -> %u + %u\n", phandle, pin_start, pin_offset, pin_size);
- // break;
- // }
- // if (am33xx_pinmux == NULL) return EINVAL;
+ am33xx_pinmux = of_find_node_by_phandle(phandle);
+ printk("0x%02x, %u -> %u + %u\n", phandle, pin_start, pin_offset, pin_size);
+ break;
+ }
+ if (am33xx_pinmux == NULL) return EINVAL;
// TODO: ???