[PATCH] drm/rockchip: cdn-dp: Remove unused functions

[linux@treblig.org]

From: "Dr. David Alan Gilbert" <linux@treblig.org>

cdn_dp_get_event and cdn_dp_dpcd_write were added in 2017 by commit
1a0f7ed3abe2 ("drm/rockchip: cdn-dp: add cdn DP support for rk3399")

but unused.
Remove them.
(Build tested only on x86-64)

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
---
 drivers/gpu/drm/rockchip/cdn-dp-reg.c | 39 ---------------------------
 drivers/gpu/drm/rockchip/cdn-dp-reg.h |  2 --
 2 files changed, 41 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.c b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
index 33fb4d05c506..a57cda971f20 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-reg.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
@@ -244,40 +244,6 @@ int cdn_dp_dpcd_read(struct cdn_dp_device *dp, u32 addr, u8 *data, u16 len)
 	return ret;
 }
 
-int cdn_dp_dpcd_write(struct cdn_dp_device *dp, u32 addr, u8 value)
-{
-	u8 msg[6], reg[5];
-	int ret;
-
-	msg[0] = 0;
-	msg[1] = 1;
-	msg[2] = (addr >> 16) & 0xff;
-	msg[3] = (addr >> 8) & 0xff;
-	msg[4] = addr & 0xff;
-	msg[5] = value;
-	ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_DPCD,
-				  sizeof(msg), msg);
-	if (ret)
-		goto err_dpcd_write;
-
-	ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
-					      DPTX_WRITE_DPCD, sizeof(reg));
-	if (ret)
-		goto err_dpcd_write;
-
-	ret = cdn_dp_mailbox_read_receive(dp, reg, sizeof(reg));
-	if (ret)
-		goto err_dpcd_write;
-
-	if (addr != (reg[2] << 16 | reg[3] << 8 | reg[4]))
-		ret = -EINVAL;
-
-err_dpcd_write:
-	if (ret)
-		DRM_DEV_ERROR(dp->dev, "dpcd write failed: %d\n", ret);
-	return ret;
-}
-
 int cdn_dp_load_firmware(struct cdn_dp_device *dp, const u32 *i_mem,
 			 u32 i_size, const u32 *d_mem, u32 d_size)
 {
@@ -400,11 +366,6 @@ int cdn_dp_event_config(struct cdn_dp_device *dp)
 	return ret;
 }
 
-u32 cdn_dp_get_event(struct cdn_dp_device *dp)
-{
-	return readl(dp->regs + SW_EVENTS0);
-}
-
 int cdn_dp_get_hpd_status(struct cdn_dp_device *dp)
 {
 	u8 status;
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.h b/drivers/gpu/drm/rockchip/cdn-dp-reg.h
index 441248b7a79e..68c3dbff1123 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-reg.h
+++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.h
@@ -459,9 +459,7 @@ int cdn_dp_load_firmware(struct cdn_dp_device *dp, const u32 *i_mem,
 int cdn_dp_set_firmware_active(struct cdn_dp_device *dp, bool enable);
 int cdn_dp_set_host_cap(struct cdn_dp_device *dp, u8 lanes, bool flip);
 int cdn_dp_event_config(struct cdn_dp_device *dp);
-u32 cdn_dp_get_event(struct cdn_dp_device *dp);
 int cdn_dp_get_hpd_status(struct cdn_dp_device *dp);
-int cdn_dp_dpcd_write(struct cdn_dp_device *dp, u32 addr, u8 value);
 int cdn_dp_dpcd_read(struct cdn_dp_device *dp, u32 addr, u8 *data, u16 len);
 int cdn_dp_get_edid_block(void *dp, u8 *edid,
 			  unsigned int block, size_t length);
-- 
2.46.2