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Subject[PATCH v4 04/14] drm: amd: remove dead code and pointless local lut storage
Date
The redundant fb helpers .load_lut, .gamma_set and .gamma_get are
no longer used. Remove the dead code and hook up the crtc .gamma_set
to use the crtc gamma_store directly instead of duplicating that
info locally.

Signed-off-by: Peter Rosin <peda@axentia.se>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 24 ------------------------
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 1 -
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 27 +++++++--------------------
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 27 +++++++--------------------
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 27 +++++++--------------------
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 27 +++++++--------------------
drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 23 -----------------------
7 files changed, 28 insertions(+), 128 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
index c0d8c6f..7dc3780 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
@@ -312,31 +312,7 @@ static int amdgpu_fbdev_destroy(struct drm_device *dev, struct amdgpu_fbdev *rfb
return 0;
}

-/** Sets the color ramps on behalf of fbcon */
-static void amdgpu_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
- u16 blue, int regno)
-{
- struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
-
- amdgpu_crtc->lut_r[regno] = red >> 6;
- amdgpu_crtc->lut_g[regno] = green >> 6;
- amdgpu_crtc->lut_b[regno] = blue >> 6;
-}
-
-/** Gets the color ramps on behalf of fbcon */
-static void amdgpu_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
- u16 *blue, int regno)
-{
- struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
-
- *red = amdgpu_crtc->lut_r[regno] << 6;
- *green = amdgpu_crtc->lut_g[regno] << 6;
- *blue = amdgpu_crtc->lut_b[regno] << 6;
-}
-
static const struct drm_fb_helper_funcs amdgpu_fb_helper_funcs = {
- .gamma_set = amdgpu_crtc_fb_gamma_set,
- .gamma_get = amdgpu_crtc_fb_gamma_get,
.fb_probe = amdgpufb_create,
};

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 43a9d3a..39f7eda 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -369,7 +369,6 @@ struct amdgpu_atom_ss {
struct amdgpu_crtc {
struct drm_crtc base;
int crtc_id;
- u16 lut_r[256], lut_g[256], lut_b[256];
bool enabled;
bool can_tile;
uint32_t crtc_offset;
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index 9f78c03..c958023 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
@@ -2267,6 +2267,7 @@ static void dce_v10_0_crtc_load_lut(struct drm_crtc *crtc)
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct amdgpu_device *adev = dev->dev_private;
+ u16 *r, *g, *b;
int i;
u32 tmp;

@@ -2304,11 +2305,14 @@ static void dce_v10_0_crtc_load_lut(struct drm_crtc *crtc)
WREG32(mmDC_LUT_WRITE_EN_MASK + amdgpu_crtc->crtc_offset, 0x00000007);

WREG32(mmDC_LUT_RW_INDEX + amdgpu_crtc->crtc_offset, 0);
+ r = crtc->gamma_store;
+ g = r + crtc->gamma_size;
+ b = g + crtc->gamma_size;
for (i = 0; i < 256; i++) {
WREG32(mmDC_LUT_30_COLOR + amdgpu_crtc->crtc_offset,
- (amdgpu_crtc->lut_r[i] << 20) |
- (amdgpu_crtc->lut_g[i] << 10) |
- (amdgpu_crtc->lut_b[i] << 0));
+ ((*r++ & 0xffc0) << 14) |
+ ((*g++ & 0xffc0) << 4) |
+ (*b++ >> 6));
}

tmp = RREG32(mmDEGAMMA_CONTROL + amdgpu_crtc->crtc_offset);
@@ -2624,15 +2628,6 @@ static int dce_v10_0_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t size,
struct drm_modeset_acquire_ctx *ctx)
{
- struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
- int i;
-
- /* userspace palettes are always correct as is */
- for (i = 0; i < size; i++) {
- amdgpu_crtc->lut_r[i] = red[i] >> 6;
- amdgpu_crtc->lut_g[i] = green[i] >> 6;
- amdgpu_crtc->lut_b[i] = blue[i] >> 6;
- }
dce_v10_0_crtc_load_lut(crtc);

return 0;
@@ -2844,14 +2839,12 @@ static const struct drm_crtc_helper_funcs dce_v10_0_crtc_helper_funcs = {
.mode_set_base_atomic = dce_v10_0_crtc_set_base_atomic,
.prepare = dce_v10_0_crtc_prepare,
.commit = dce_v10_0_crtc_commit,
- .load_lut = dce_v10_0_crtc_load_lut,
.disable = dce_v10_0_crtc_disable,
};

static int dce_v10_0_crtc_init(struct amdgpu_device *adev, int index)
{
struct amdgpu_crtc *amdgpu_crtc;
- int i;

amdgpu_crtc = kzalloc(sizeof(struct amdgpu_crtc) +
(AMDGPUFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
@@ -2869,12 +2862,6 @@ static int dce_v10_0_crtc_init(struct amdgpu_device *adev, int index)
adev->ddev->mode_config.cursor_width = amdgpu_crtc->max_cursor_width;
adev->ddev->mode_config.cursor_height = amdgpu_crtc->max_cursor_height;

- for (i = 0; i < 256; i++) {
- amdgpu_crtc->lut_r[i] = i << 2;
- amdgpu_crtc->lut_g[i] = i << 2;
- amdgpu_crtc->lut_b[i] = i << 2;
- }
-
switch (amdgpu_crtc->crtc_id) {
case 0:
default:
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 4bcf01d..7e14f53 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -2251,6 +2251,7 @@ static void dce_v11_0_crtc_load_lut(struct drm_crtc *crtc)
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct amdgpu_device *adev = dev->dev_private;
+ u16 *r, *g, *b;
int i;
u32 tmp;

@@ -2282,11 +2283,14 @@ static void dce_v11_0_crtc_load_lut(struct drm_crtc *crtc)
WREG32(mmDC_LUT_WRITE_EN_MASK + amdgpu_crtc->crtc_offset, 0x00000007);

WREG32(mmDC_LUT_RW_INDEX + amdgpu_crtc->crtc_offset, 0);
+ r = crtc->gamma_store;
+ g = r + crtc->gamma_size;
+ b = g + crtc->gamma_size;
for (i = 0; i < 256; i++) {
WREG32(mmDC_LUT_30_COLOR + amdgpu_crtc->crtc_offset,
- (amdgpu_crtc->lut_r[i] << 20) |
- (amdgpu_crtc->lut_g[i] << 10) |
- (amdgpu_crtc->lut_b[i] << 0));
+ ((*r++ & 0xffc0) << 14) |
+ ((*g++ & 0xffc0) << 4) |
+ (*b++ >> 6));
}

tmp = RREG32(mmDEGAMMA_CONTROL + amdgpu_crtc->crtc_offset);
@@ -2644,15 +2648,6 @@ static int dce_v11_0_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t size,
struct drm_modeset_acquire_ctx *ctx)
{
- struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
- int i;
-
- /* userspace palettes are always correct as is */
- for (i = 0; i < size; i++) {
- amdgpu_crtc->lut_r[i] = red[i] >> 6;
- amdgpu_crtc->lut_g[i] = green[i] >> 6;
- amdgpu_crtc->lut_b[i] = blue[i] >> 6;
- }
dce_v11_0_crtc_load_lut(crtc);

return 0;
@@ -2892,14 +2887,12 @@ static const struct drm_crtc_helper_funcs dce_v11_0_crtc_helper_funcs = {
.mode_set_base_atomic = dce_v11_0_crtc_set_base_atomic,
.prepare = dce_v11_0_crtc_prepare,
.commit = dce_v11_0_crtc_commit,
- .load_lut = dce_v11_0_crtc_load_lut,
.disable = dce_v11_0_crtc_disable,
};

static int dce_v11_0_crtc_init(struct amdgpu_device *adev, int index)
{
struct amdgpu_crtc *amdgpu_crtc;
- int i;

amdgpu_crtc = kzalloc(sizeof(struct amdgpu_crtc) +
(AMDGPUFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
@@ -2917,12 +2910,6 @@ static int dce_v11_0_crtc_init(struct amdgpu_device *adev, int index)
adev->ddev->mode_config.cursor_width = amdgpu_crtc->max_cursor_width;
adev->ddev->mode_config.cursor_height = amdgpu_crtc->max_cursor_height;

- for (i = 0; i < 256; i++) {
- amdgpu_crtc->lut_r[i] = i << 2;
- amdgpu_crtc->lut_g[i] = i << 2;
- amdgpu_crtc->lut_b[i] = i << 2;
- }
-
switch (amdgpu_crtc->crtc_id) {
case 0:
default:
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index fd134a4..d773b50 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -2182,6 +2182,7 @@ static void dce_v6_0_crtc_load_lut(struct drm_crtc *crtc)
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct amdgpu_device *adev = dev->dev_private;
+ u16 *r, *g, *b;
int i;

DRM_DEBUG_KMS("%d\n", amdgpu_crtc->crtc_id);
@@ -2211,11 +2212,14 @@ static void dce_v6_0_crtc_load_lut(struct drm_crtc *crtc)
WREG32(mmDC_LUT_WRITE_EN_MASK + amdgpu_crtc->crtc_offset, 0x00000007);

WREG32(mmDC_LUT_RW_INDEX + amdgpu_crtc->crtc_offset, 0);
+ r = crtc->gamma_store;
+ g = r + crtc->gamma_size;
+ b = g + crtc->gamma_size;
for (i = 0; i < 256; i++) {
WREG32(mmDC_LUT_30_COLOR + amdgpu_crtc->crtc_offset,
- (amdgpu_crtc->lut_r[i] << 20) |
- (amdgpu_crtc->lut_g[i] << 10) |
- (amdgpu_crtc->lut_b[i] << 0));
+ ((*r++ & 0xffc0) << 14) |
+ ((*g++ & 0xffc0) << 4) |
+ (*b++ >> 6));
}

WREG32(mmDEGAMMA_CONTROL + amdgpu_crtc->crtc_offset,
@@ -2496,15 +2500,6 @@ static int dce_v6_0_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t size,
struct drm_modeset_acquire_ctx *ctx)
{
- struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
- int i;
-
- /* userspace palettes are always correct as is */
- for (i = 0; i < size; i++) {
- amdgpu_crtc->lut_r[i] = red[i] >> 6;
- amdgpu_crtc->lut_g[i] = green[i] >> 6;
- amdgpu_crtc->lut_b[i] = blue[i] >> 6;
- }
dce_v6_0_crtc_load_lut(crtc);

return 0;
@@ -2712,14 +2707,12 @@ static const struct drm_crtc_helper_funcs dce_v6_0_crtc_helper_funcs = {
.mode_set_base_atomic = dce_v6_0_crtc_set_base_atomic,
.prepare = dce_v6_0_crtc_prepare,
.commit = dce_v6_0_crtc_commit,
- .load_lut = dce_v6_0_crtc_load_lut,
.disable = dce_v6_0_crtc_disable,
};

static int dce_v6_0_crtc_init(struct amdgpu_device *adev, int index)
{
struct amdgpu_crtc *amdgpu_crtc;
- int i;

amdgpu_crtc = kzalloc(sizeof(struct amdgpu_crtc) +
(AMDGPUFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
@@ -2737,12 +2730,6 @@ static int dce_v6_0_crtc_init(struct amdgpu_device *adev, int index)
adev->ddev->mode_config.cursor_width = amdgpu_crtc->max_cursor_width;
adev->ddev->mode_config.cursor_height = amdgpu_crtc->max_cursor_height;

- for (i = 0; i < 256; i++) {
- amdgpu_crtc->lut_r[i] = i << 2;
- amdgpu_crtc->lut_g[i] = i << 2;
- amdgpu_crtc->lut_b[i] = i << 2;
- }
-
amdgpu_crtc->crtc_offset = crtc_offsets[amdgpu_crtc->crtc_id];

amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index a9e8695..4eb63f6 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -2124,6 +2124,7 @@ static void dce_v8_0_crtc_load_lut(struct drm_crtc *crtc)
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct amdgpu_device *adev = dev->dev_private;
+ u16 *r, *g, *b;
int i;

DRM_DEBUG_KMS("%d\n", amdgpu_crtc->crtc_id);
@@ -2153,11 +2154,14 @@ static void dce_v8_0_crtc_load_lut(struct drm_crtc *crtc)
WREG32(mmDC_LUT_WRITE_EN_MASK + amdgpu_crtc->crtc_offset, 0x00000007);

WREG32(mmDC_LUT_RW_INDEX + amdgpu_crtc->crtc_offset, 0);
+ r = crtc->gamma_store;
+ g = r + crtc->gamma_size;
+ b = g + crtc->gamma_size;
for (i = 0; i < 256; i++) {
WREG32(mmDC_LUT_30_COLOR + amdgpu_crtc->crtc_offset,
- (amdgpu_crtc->lut_r[i] << 20) |
- (amdgpu_crtc->lut_g[i] << 10) |
- (amdgpu_crtc->lut_b[i] << 0));
+ ((*r++ & 0xffc0) << 14) |
+ ((*g++ & 0xffc0) << 4) |
+ (*b++ >> 6));
}

WREG32(mmDEGAMMA_CONTROL + amdgpu_crtc->crtc_offset,
@@ -2475,15 +2479,6 @@ static int dce_v8_0_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t size,
struct drm_modeset_acquire_ctx *ctx)
{
- struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
- int i;
-
- /* userspace palettes are always correct as is */
- for (i = 0; i < size; i++) {
- amdgpu_crtc->lut_r[i] = red[i] >> 6;
- amdgpu_crtc->lut_g[i] = green[i] >> 6;
- amdgpu_crtc->lut_b[i] = blue[i] >> 6;
- }
dce_v8_0_crtc_load_lut(crtc);

return 0;
@@ -2702,14 +2697,12 @@ static const struct drm_crtc_helper_funcs dce_v8_0_crtc_helper_funcs = {
.mode_set_base_atomic = dce_v8_0_crtc_set_base_atomic,
.prepare = dce_v8_0_crtc_prepare,
.commit = dce_v8_0_crtc_commit,
- .load_lut = dce_v8_0_crtc_load_lut,
.disable = dce_v8_0_crtc_disable,
};

static int dce_v8_0_crtc_init(struct amdgpu_device *adev, int index)
{
struct amdgpu_crtc *amdgpu_crtc;
- int i;

amdgpu_crtc = kzalloc(sizeof(struct amdgpu_crtc) +
(AMDGPUFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
@@ -2727,12 +2720,6 @@ static int dce_v8_0_crtc_init(struct amdgpu_device *adev, int index)
adev->ddev->mode_config.cursor_width = amdgpu_crtc->max_cursor_width;
adev->ddev->mode_config.cursor_height = amdgpu_crtc->max_cursor_height;

- for (i = 0; i < 256; i++) {
- amdgpu_crtc->lut_r[i] = i << 2;
- amdgpu_crtc->lut_g[i] = i << 2;
- amdgpu_crtc->lut_b[i] = i << 2;
- }
-
amdgpu_crtc->crtc_offset = crtc_offsets[amdgpu_crtc->crtc_id];

amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
index 90bb083..ecf34bc 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
@@ -168,16 +168,6 @@ static int dce_virtual_crtc_gamma_set(struct drm_crtc *crtc, u16 *red,
u16 *green, u16 *blue, uint32_t size,
struct drm_modeset_acquire_ctx *ctx)
{
- struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
- int i;
-
- /* userspace palettes are always correct as is */
- for (i = 0; i < size; i++) {
- amdgpu_crtc->lut_r[i] = red[i] >> 6;
- amdgpu_crtc->lut_g[i] = green[i] >> 6;
- amdgpu_crtc->lut_b[i] = blue[i] >> 6;
- }
-
return 0;
}

@@ -289,11 +279,6 @@ static int dce_virtual_crtc_set_base(struct drm_crtc *crtc, int x, int y,
return 0;
}

-static void dce_virtual_crtc_load_lut(struct drm_crtc *crtc)
-{
- return;
-}
-
static int dce_virtual_crtc_set_base_atomic(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int x, int y, enum mode_set_atomic state)
@@ -309,14 +294,12 @@ static const struct drm_crtc_helper_funcs dce_virtual_crtc_helper_funcs = {
.mode_set_base_atomic = dce_virtual_crtc_set_base_atomic,
.prepare = dce_virtual_crtc_prepare,
.commit = dce_virtual_crtc_commit,
- .load_lut = dce_virtual_crtc_load_lut,
.disable = dce_virtual_crtc_disable,
};

static int dce_virtual_crtc_init(struct amdgpu_device *adev, int index)
{
struct amdgpu_crtc *amdgpu_crtc;
- int i;

amdgpu_crtc = kzalloc(sizeof(struct amdgpu_crtc) +
(AMDGPUFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
@@ -329,12 +312,6 @@ static int dce_virtual_crtc_init(struct amdgpu_device *adev, int index)
amdgpu_crtc->crtc_id = index;
adev->mode_info.crtcs[index] = amdgpu_crtc;

- for (i = 0; i < 256; i++) {
- amdgpu_crtc->lut_r[i] = i << 2;
- amdgpu_crtc->lut_g[i] = i << 2;
- amdgpu_crtc->lut_b[i] = i << 2;
- }
-
amdgpu_crtc->pll_id = ATOM_PPLL_INVALID;
amdgpu_crtc->encoder = NULL;
amdgpu_crtc->connector = NULL;
--
2.1.4
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