diff options
Diffstat (limited to 'drivers/gpu/drm/meson/meson_viu.c')
| -rw-r--r-- | drivers/gpu/drm/meson/meson_viu.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/drivers/gpu/drm/meson/meson_viu.c b/drivers/gpu/drm/meson/meson_viu.c new file mode 100644 index 000000000000..a6de8ba7af19 --- /dev/null +++ b/drivers/gpu/drm/meson/meson_viu.c @@ -0,0 +1,331 @@ +/* + * Copyright (C) 2016 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + * Copyright (C) 2015 Amlogic, Inc. All rights reserved. + * Copyright (C) 2014 Endless Mobile + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <drm/drmP.h> +#include "meson_drv.h" +#include "meson_viu.h" +#include "meson_vpp.h" +#include "meson_venc.h" +#include "meson_canvas.h" +#include "meson_registers.h" + +/* + * VIU Handles the Pixel scanout and the basic Colorspace conversions + * We handle the following features : + * - OSD1 RGB565/RGB888/xRGB8888 scanout + * - RGB conversion to x/cb/cr + * - Progressive or Interlace buffer scanout + * - OSD1 Commit on Vsync + * - HDR OSD matrix for GXL/GXM + * + * What is missing : + * - BGR888/xBGR8888/BGRx8888/BGRx8888 modes + * - YUV4:2:2 Y0CbY1Cr scanout + * - Conversion to YUV 4:4:4 from 4:2:2 input + * - Colorkey Alpha matching + * - Big endian scanout + * - X/Y reverse scanout + * - Global alpha setup + * - OSD2 support, would need interlace switching on vsync + * - OSD1 full scaling to support TV overscan + */ + +/* OSD csc defines */ + +enum viu_matrix_sel_e { + VIU_MATRIX_OSD_EOTF = 0, + VIU_MATRIX_OSD, +}; + +enum viu_lut_sel_e { + VIU_LUT_OSD_EOTF = 0, + VIU_LUT_OSD_OETF, +}; + +#define COEFF_NORM(a) ((int)((((a) * 2048.0) + 1) / 2)) +#define MATRIX_5X3_COEF_SIZE 24 + +#define EOTF_COEFF_NORM(a) ((int)((((a) * 4096.0) + 1) / 2)) +#define EOTF_COEFF_SIZE 10 +#define EOTF_COEFF_RIGHTSHIFT 1 + +static int RGB709_to_YUV709l_coeff[MATRIX_5X3_COEF_SIZE] = { + 0, 0, 0, /* pre offset */ + COEFF_NORM(0.181873), COEFF_NORM(0.611831), COEFF_NORM(0.061765), + COEFF_NORM(-0.100251), COEFF_NORM(-0.337249), COEFF_NORM(0.437500), + COEFF_NORM(0.437500), COEFF_NORM(-0.397384), COEFF_NORM(-0.040116), + 0, 0, 0, /* 10'/11'/12' */ + 0, 0, 0, /* 20'/21'/22' */ + 64, 512, 512, /* offset */ + 0, 0, 0 /* mode, right_shift, clip_en */ +}; + +/* eotf matrix: bypass */ +static int eotf_bypass_coeff[EOTF_COEFF_SIZE] = { + EOTF_COEFF_NORM(1.0), EOTF_COEFF_NORM(0.0), EOTF_COEFF_NORM(0.0), + EOTF_COEFF_NORM(0.0), EOTF_COEFF_NORM(1.0), EOTF_COEFF_NORM(0.0), + EOTF_COEFF_NORM(0.0), EOTF_COEFF_NORM(0.0), EOTF_COEFF_NORM(1.0), + EOTF_COEFF_RIGHTSHIFT /* right shift */ +}; + +void meson_viu_set_osd_matrix(struct meson_drm *priv, + enum viu_matrix_sel_e m_select, + int *m, bool csc_on) +{ + if (m_select == VIU_MATRIX_OSD) { + /* osd matrix, VIU_MATRIX_0 */ + writel(((m[0] & 0xfff) << 16) | (m[1] & 0xfff), + priv->io_base + _REG(VIU_OSD1_MATRIX_PRE_OFFSET0_1)); + writel(m[2] & 0xfff, + priv->io_base + _REG(VIU_OSD1_MATRIX_PRE_OFFSET2)); + writel(((m[3] & 0x1fff) << 16) | (m[4] & 0x1fff), + priv->io_base + _REG(VIU_OSD1_MATRIX_COEF00_01)); + writel(((m[5] & 0x1fff) << 16) | (m[6] & 0x1fff), + priv->io_base + _REG(VIU_OSD1_MATRIX_COEF02_10)); + writel(((m[7] & 0x1fff) << 16) | (m[8] & 0x1fff), + priv->io_base + _REG(VIU_OSD1_MATRIX_COEF11_12)); + writel(((m[9] & 0x1fff) << 16) | (m[10] & 0x1fff), + priv->io_base + _REG(VIU_OSD1_MATRIX_COEF20_21)); + + if (m[21]) { + writel(((m[11] & 0x1fff) << 16) | (m[12] & 0x1fff), + priv->io_base + + _REG(VIU_OSD1_MATRIX_COEF22_30)); + writel(((m[13] & 0x1fff) << 16) | (m[14] & 0x1fff), + priv->io_base + + _REG(VIU_OSD1_MATRIX_COEF31_32)); + writel(((m[15] & 0x1fff) << 16) | (m[16] & 0x1fff), + priv->io_base + + _REG(VIU_OSD1_MATRIX_COEF40_41)); + writel(m[17] & 0x1fff, priv->io_base + + _REG(VIU_OSD1_MATRIX_COLMOD_COEF42)); + } else + writel((m[11] & 0x1fff) << 16, priv->io_base + + _REG(VIU_OSD1_MATRIX_COEF22_30)); + + writel(((m[18] & 0xfff) << 16) | (m[19] & 0xfff), + priv->io_base + _REG(VIU_OSD1_MATRIX_OFFSET0_1)); + writel(m[20] & 0xfff, + priv->io_base + _REG(VIU_OSD1_MATRIX_OFFSET2)); + + writel_bits_relaxed(3 << 30, m[21] << 30, + priv->io_base + _REG(VIU_OSD1_MATRIX_COLMOD_COEF42)); + writel_bits_relaxed(7 << 16, m[22] << 16, + priv->io_base + _REG(VIU_OSD1_MATRIX_COLMOD_COEF42)); + + /* 23 reserved for clipping control */ + writel_bits_relaxed(BIT(0), csc_on ? BIT(0) : 0, + priv->io_base + _REG(VIU_OSD1_MATRIX_CTRL)); + writel_bits_relaxed(BIT(1), 0, + priv->io_base + _REG(VIU_OSD1_MATRIX_CTRL)); + } else if (m_select == VIU_MATRIX_OSD_EOTF) { + int i; + + /* osd eotf matrix, VIU_MATRIX_OSD_EOTF */ + for (i = 0; i < 5; i++) + writel(((m[i * 2] & 0x1fff) << 16) | + (m[i * 2 + 1] & 0x1fff), priv->io_base + + _REG(VIU_OSD1_EOTF_CTL + i + 1)); + + writel_bits_relaxed(BIT(30), csc_on ? BIT(30) : 0, + priv->io_base + _REG(VIU_OSD1_EOTF_CTL)); + writel_bits_relaxed(BIT(31), csc_on ? BIT(31) : 0, + priv->io_base + _REG(VIU_OSD1_EOTF_CTL)); + } +} + +#define OSD_EOTF_LUT_SIZE 33 +#define OSD_OETF_LUT_SIZE 41 + +void meson_viu_set_osd_lut(struct meson_drm *priv, enum viu_lut_sel_e lut_sel, + unsigned int *r_map, unsigned int *g_map, + unsigned int *b_map, + bool csc_on) +{ + unsigned int addr_port; + unsigned int data_port; + unsigned int ctrl_port; + int i; + + if (lut_sel == VIU_LUT_OSD_EOTF) { + addr_port = VIU_OSD1_EOTF_LUT_ADDR_PORT; + data_port = VIU_OSD1_EOTF_LUT_DATA_PORT; + ctrl_port = VIU_OSD1_EOTF_CTL; + } else if (lut_sel == VIU_LUT_OSD_OETF) { + addr_port = VIU_OSD1_OETF_LUT_ADDR_PORT; + data_port = VIU_OSD1_OETF_LUT_DATA_PORT; + ctrl_port = VIU_OSD1_OETF_CTL; + } else + return; + + if (lut_sel == VIU_LUT_OSD_OETF) { + writel(0, priv->io_base + _REG(addr_port)); + + for (i = 0; i < 20; i++) + writel(r_map[i * 2] | (r_map[i * 2 + 1] << 16), + priv->io_base + _REG(data_port)); + + writel(r_map[OSD_OETF_LUT_SIZE - 1] | (g_map[0] << 16), + priv->io_base + _REG(data_port)); + + for (i = 0; i < 20; i++) + writel(g_map[i * 2 + 1] | (g_map[i * 2 + 2] << 16), + priv->io_base + _REG(data_port)); + + for (i = 0; i < 20; i++) + writel(b_map[i * 2] | (b_map[i * 2 + 1] << 16), + priv->io_base + _REG(data_port)); + + writel(b_map[OSD_OETF_LUT_SIZE - 1], + priv->io_base + _REG(data_port)); + + if (csc_on) + writel_bits_relaxed(0x7 << 29, 7 << 29, + priv->io_base + _REG(ctrl_port)); + else + writel_bits_relaxed(0x7 << 29, 0, + priv->io_base + _REG(ctrl_port)); + } else if (lut_sel == VIU_LUT_OSD_EOTF) { + writel(0, priv->io_base + _REG(addr_port)); + + for (i = 0; i < 20; i++) + writel(r_map[i * 2] | (r_map[i * 2 + 1] << 16), + priv->io_base + _REG(data_port)); + + writel(r_map[OSD_EOTF_LUT_SIZE - 1] | (g_map[0] << 16), + priv->io_base + _REG(data_port)); + + for (i = 0; i < 20; i++) + writel(g_map[i * 2 + 1] | (g_map[i * 2 + 2] << 16), + priv->io_base + _REG(data_port)); + + for (i = 0; i < 20; i++) + writel(b_map[i * 2] | (b_map[i * 2 + 1] << 16), + priv->io_base + _REG(data_port)); + + writel(b_map[OSD_EOTF_LUT_SIZE - 1], + priv->io_base + _REG(data_port)); + + if (csc_on) + writel_bits_relaxed(7 << 27, 7 << 27, + priv->io_base + _REG(ctrl_port)); + else + writel_bits_relaxed(7 << 27, 0, + priv->io_base + _REG(ctrl_port)); + + writel_bits_relaxed(BIT(31), BIT(31), + priv->io_base + _REG(ctrl_port)); + } +} + +/* eotf lut: linear */ +static unsigned int eotf_33_linear_mapping[OSD_EOTF_LUT_SIZE] = { + 0x0000, 0x0200, 0x0400, 0x0600, + 0x0800, 0x0a00, 0x0c00, 0x0e00, + 0x1000, 0x1200, 0x1400, 0x1600, + 0x1800, 0x1a00, 0x1c00, 0x1e00, + 0x2000, 0x2200, 0x2400, 0x2600, + 0x2800, 0x2a00, 0x2c00, 0x2e00, + 0x3000, 0x3200, 0x3400, 0x3600, + 0x3800, 0x3a00, 0x3c00, 0x3e00, + 0x4000 +}; + +/* osd oetf lut: linear */ +static unsigned int oetf_41_linear_mapping[OSD_OETF_LUT_SIZE] = { + 0, 0, 0, 0, + 0, 32, 64, 96, + 128, 160, 196, 224, + 256, 288, 320, 352, + 384, 416, 448, 480, + 512, 544, 576, 608, + 640, 672, 704, 736, + 768, 800, 832, 864, + 896, 928, 960, 992, + 1023, 1023, 1023, 1023, + 1023 +}; + +static void meson_viu_load_matrix(struct meson_drm *priv) +{ + /* eotf lut bypass */ + meson_viu_set_osd_lut(priv, VIU_LUT_OSD_EOTF, + eotf_33_linear_mapping, /* R */ + eotf_33_linear_mapping, /* G */ + eotf_33_linear_mapping, /* B */ + false); + + /* eotf matrix bypass */ + meson_viu_set_osd_matrix(priv, VIU_MATRIX_OSD_EOTF, + eotf_bypass_coeff, + false); + + /* oetf lut bypass */ + meson_viu_set_osd_lut(priv, VIU_LUT_OSD_OETF, + oetf_41_linear_mapping, /* R */ + oetf_41_linear_mapping, /* G */ + oetf_41_linear_mapping, /* B */ + false); + + /* osd matrix RGB709 to YUV709 limit */ + meson_viu_set_osd_matrix(priv, VIU_MATRIX_OSD, + RGB709_to_YUV709l_coeff, + true); +} + +void meson_viu_init(struct meson_drm *priv) +{ + uint32_t reg; + + /* Disable OSDs */ + writel_bits_relaxed(BIT(0) | BIT(21), 0, + priv->io_base + _REG(VIU_OSD1_CTRL_STAT)); + writel_bits_relaxed(BIT(0) | BIT(21), 0, + priv->io_base + _REG(VIU_OSD2_CTRL_STAT)); + + /* On GXL/GXM, Use the 10bit HDR conversion matrix */ + if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || + meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) + meson_viu_load_matrix(priv); + + /* Initialize OSD1 fifo control register */ + reg = BIT(0) | /* Urgent DDR request priority */ + (4 << 5) | /* hold_fifo_lines */ + (3 << 10) | /* burst length 64 */ + (32 << 12) | /* fifo_depth_val: 32*8=256 */ + (2 << 22) | /* 4 words in 1 burst */ + (2 << 24); + writel_relaxed(reg, priv->io_base + _REG(VIU_OSD1_FIFO_CTRL_STAT)); + writel_relaxed(reg, priv->io_base + _REG(VIU_OSD2_FIFO_CTRL_STAT)); + + /* Set OSD alpha replace value */ + writel_bits_relaxed(0xff << OSD_REPLACE_SHIFT, + 0xff << OSD_REPLACE_SHIFT, + priv->io_base + _REG(VIU_OSD1_CTRL_STAT2)); + writel_bits_relaxed(0xff << OSD_REPLACE_SHIFT, + 0xff << OSD_REPLACE_SHIFT, + priv->io_base + _REG(VIU_OSD2_CTRL_STAT2)); + + priv->viu.osd1_enabled = false; + priv->viu.osd1_commit = false; + priv->viu.osd1_interlace = false; +} |