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-rw-r--r--drivers/gpu/drm/meson/meson_viu.c331
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;
+}
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