drm/nouveau/gpio: reimplement as nouveau_gpio.c, fixing a number of issues

- moves out of nouveau_bios.c and demagics the logical state definitions
- simplifies chipset-specific driver interface
- makes most of gpio irq handling common, will use for nv4x hpd later
- api extended to allow both direct gpio access, and access using the
  logical function states
- api extended to allow for future use of gpio extender chips
- pre-nv50 was handled very badly, the main issue being that all GPIOs
  were being treated as output-only.
- fixes nvd0 so gpio changes actually stick, magic reg needs bashing

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 0 insertions, 17 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.h b/drivers/gpu/drm/nouveau/nouveau_bios.h
index 32b911d38e9a..1e382ad5a2b8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.h
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.h
@@ -61,19 +61,6 @@ enum dcb_gpio_tag {
 	DCB_GPIO_UNUSED = 0xff
 };
 
-struct dcb_gpio_entry {
-	enum dcb_gpio_tag tag;
-	int line;
-	uint32_t entry;
-	uint8_t state_default;
-	uint8_t state[2];
-};
-
-struct dcb_gpio_table {
-	int entries;
-	struct dcb_gpio_entry entry[DCB_MAX_NUM_GPIO_ENTRIES];
-};
-
 enum dcb_connector_type {
 	DCB_CONNECTOR_VGA = 0x00,
 	DCB_CONNECTOR_TV_0 = 0x10,
@@ -142,12 +129,8 @@ struct dcb_entry {
 
 struct dcb_table {
 	uint8_t version;
-
 	int entries;
 	struct dcb_entry entry[DCB_MAX_NUM_ENTRIES];
-
-	uint16_t gpio_table_ptr;
-	struct dcb_gpio_table gpio;
 };
 
 enum nouveau_or {