From 2b1c6b21b5e6c82ebb55d7fb7df90e60e88cbb14 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Sat, 10 Sep 2016 14:54:26 +0200 Subject: brcm2708: update linux 4.4 patches to latest version MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also adds support for Raspberry Pi Compute Module 3 (untested). Signed-off-by: Álvaro Fernández Rojas --- .../0336-drm-vc4-Add-support-for-gamma-ramps.patch | 137 --------------------- 1 file changed, 137 deletions(-) delete mode 100644 target/linux/brcm2708/patches-4.4/0336-drm-vc4-Add-support-for-gamma-ramps.patch (limited to 'target/linux/brcm2708/patches-4.4/0336-drm-vc4-Add-support-for-gamma-ramps.patch') diff --git a/target/linux/brcm2708/patches-4.4/0336-drm-vc4-Add-support-for-gamma-ramps.patch b/target/linux/brcm2708/patches-4.4/0336-drm-vc4-Add-support-for-gamma-ramps.patch deleted file mode 100644 index fe0567c734..0000000000 --- a/target/linux/brcm2708/patches-4.4/0336-drm-vc4-Add-support-for-gamma-ramps.patch +++ /dev/null @@ -1,137 +0,0 @@ -From ad9de9ffedcbcc35c4fe13cddabda66abc98e3ef Mon Sep 17 00:00:00 2001 -From: Eric Anholt -Date: Thu, 31 Mar 2016 18:38:20 -0700 -Subject: [PATCH 336/423] drm/vc4: Add support for gamma ramps. - -We could possibly save a bit of power by not requesting gamma -conversion when the ramp happens to be 1:1, but at least if all the -CRTCs are off the SRAM will be disabled. - -This should fix brightness sliders in a lot of fullscreen games. - -Signed-off-by: Eric Anholt -(cherry picked from commit e582b6c7e7f9d0b1e30e8017e4082d3a9ede3310) ---- - drivers/gpu/drm/vc4/vc4_crtc.c | 58 ++++++++++++++++++++++++++++++++++++++++++ - drivers/gpu/drm/vc4/vc4_regs.h | 6 +++++ - 2 files changed, 64 insertions(+) - ---- a/drivers/gpu/drm/vc4/vc4_crtc.c -+++ b/drivers/gpu/drm/vc4/vc4_crtc.c -@@ -49,6 +49,10 @@ struct vc4_crtc { - /* Which HVS channel we're using for our CRTC. */ - int channel; - -+ u8 lut_r[256]; -+ u8 lut_g[256]; -+ u8 lut_b[256]; -+ - struct drm_pending_vblank_event *event; - }; - -@@ -147,6 +151,46 @@ static void vc4_crtc_destroy(struct drm_ - drm_crtc_cleanup(crtc); - } - -+static void -+vc4_crtc_lut_load(struct drm_crtc *crtc) -+{ -+ struct drm_device *dev = crtc->dev; -+ struct vc4_dev *vc4 = to_vc4_dev(dev); -+ struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); -+ u32 i; -+ -+ /* The LUT memory is laid out with each HVS channel in order, -+ * each of which takes 256 writes for R, 256 for G, then 256 -+ * for B. -+ */ -+ HVS_WRITE(SCALER_GAMADDR, -+ SCALER_GAMADDR_AUTOINC | -+ (vc4_crtc->channel * 3 * crtc->gamma_size)); -+ -+ for (i = 0; i < crtc->gamma_size; i++) -+ HVS_WRITE(SCALER_GAMDATA, vc4_crtc->lut_r[i]); -+ for (i = 0; i < crtc->gamma_size; i++) -+ HVS_WRITE(SCALER_GAMDATA, vc4_crtc->lut_g[i]); -+ for (i = 0; i < crtc->gamma_size; i++) -+ HVS_WRITE(SCALER_GAMDATA, vc4_crtc->lut_b[i]); -+} -+ -+static void -+vc4_crtc_gamma_set(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, -+ uint32_t start, uint32_t size) -+{ -+ struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); -+ u32 i; -+ -+ for (i = start; i < start + size; i++) { -+ vc4_crtc->lut_r[i] = r[i] >> 8; -+ vc4_crtc->lut_g[i] = g[i] >> 8; -+ vc4_crtc->lut_b[i] = b[i] >> 8; -+ } -+ -+ vc4_crtc_lut_load(crtc); -+} -+ - static u32 vc4_get_fifo_full_level(u32 format) - { - static const u32 fifo_len_bytes = 64; -@@ -260,8 +304,14 @@ static void vc4_crtc_mode_set_nofb(struc - - HVS_WRITE(SCALER_DISPBKGNDX(vc4_crtc->channel), - SCALER_DISPBKGND_AUTOHS | -+ SCALER_DISPBKGND_GAMMA | - (interlace ? SCALER_DISPBKGND_INTERLACE : 0)); - -+ /* Reload the LUT, since the SRAMs would have been disabled if -+ * all CRTCs had SCALER_DISPBKGND_GAMMA unset at once. -+ */ -+ vc4_crtc_lut_load(crtc); -+ - if (debug_dump_regs) { - DRM_INFO("CRTC %d regs after:\n", drm_crtc_index(crtc)); - vc4_crtc_dump_regs(vc4_crtc); -@@ -613,6 +663,7 @@ static const struct drm_crtc_funcs vc4_c - .reset = drm_atomic_helper_crtc_reset, - .atomic_duplicate_state = vc4_crtc_duplicate_state, - .atomic_destroy_state = vc4_crtc_destroy_state, -+ .gamma_set = vc4_crtc_gamma_set, - }; - - static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = { -@@ -731,6 +782,7 @@ static int vc4_crtc_bind(struct device * - primary_plane->crtc = crtc; - vc4->crtc[drm_crtc_index(crtc)] = vc4_crtc; - vc4_crtc->channel = vc4_crtc->data->hvs_channel; -+ drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r)); - - /* Set up some arbitrary number of planes. We're not limited - * by a set number of physical registers, just the space in -@@ -771,6 +823,12 @@ static int vc4_crtc_bind(struct device * - - vc4_set_crtc_possible_masks(drm, crtc); - -+ for (i = 0; i < crtc->gamma_size; i++) { -+ vc4_crtc->lut_r[i] = i; -+ vc4_crtc->lut_g[i] = i; -+ vc4_crtc->lut_b[i] = i; -+ } -+ - platform_set_drvdata(pdev, vc4_crtc); - - return 0; ---- a/drivers/gpu/drm/vc4/vc4_regs.h -+++ b/drivers/gpu/drm/vc4/vc4_regs.h -@@ -390,6 +390,12 @@ - #define SCALER_DISPBASE2 0x0000006c - #define SCALER_DISPALPHA2 0x00000070 - #define SCALER_GAMADDR 0x00000078 -+# define SCALER_GAMADDR_AUTOINC BIT(31) -+/* Enables all gamma ramp SRAMs, not just those of CRTCs with gamma -+ * enabled. -+ */ -+# define SCALER_GAMADDR_SRAMENB BIT(30) -+ - #define SCALER_GAMDATA 0x000000e0 - #define SCALER_DLIST_START 0x00002000 - #define SCALER_DLIST_SIZE 0x00004000 -- cgit v1.2.3