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Diffstat (limited to 'drivers/media/video/cx25821/cx25821-medusa-video.c')
-rw-r--r--drivers/media/video/cx25821/cx25821-medusa-video.c872
1 files changed, 872 insertions, 0 deletions
diff --git a/drivers/media/video/cx25821/cx25821-medusa-video.c b/drivers/media/video/cx25821/cx25821-medusa-video.c
new file mode 100644
index 000000000000..fc780d0908dc
--- /dev/null
+++ b/drivers/media/video/cx25821/cx25821-medusa-video.c
@@ -0,0 +1,872 @@
+/*
+ * Driver for the Conexant CX25821 PCIe bridge
+ *
+ * Copyright (C) 2009 Conexant Systems Inc.
+ * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "cx25821.h"
+#include "cx25821-medusa-video.h"
+#include "cx25821-biffuncs.h"
+
+/*
+ * medusa_enable_bluefield_output()
+ *
+ * Enable the generation of blue filed output if no video
+ *
+ */
+static void medusa_enable_bluefield_output(struct cx25821_dev *dev, int channel,
+ int enable)
+{
+ int ret_val = 1;
+ u32 value = 0;
+ u32 tmp = 0;
+ int out_ctrl = OUT_CTRL1;
+ int out_ctrl_ns = OUT_CTRL_NS;
+
+ switch (channel) {
+ default:
+ case VDEC_A:
+ break;
+ case VDEC_B:
+ out_ctrl = VDEC_B_OUT_CTRL1;
+ out_ctrl_ns = VDEC_B_OUT_CTRL_NS;
+ break;
+ case VDEC_C:
+ out_ctrl = VDEC_C_OUT_CTRL1;
+ out_ctrl_ns = VDEC_C_OUT_CTRL_NS;
+ break;
+ case VDEC_D:
+ out_ctrl = VDEC_D_OUT_CTRL1;
+ out_ctrl_ns = VDEC_D_OUT_CTRL_NS;
+ break;
+ case VDEC_E:
+ out_ctrl = VDEC_E_OUT_CTRL1;
+ out_ctrl_ns = VDEC_E_OUT_CTRL_NS;
+ return;
+ case VDEC_F:
+ out_ctrl = VDEC_F_OUT_CTRL1;
+ out_ctrl_ns = VDEC_F_OUT_CTRL_NS;
+ return;
+ case VDEC_G:
+ out_ctrl = VDEC_G_OUT_CTRL1;
+ out_ctrl_ns = VDEC_G_OUT_CTRL_NS;
+ return;
+ case VDEC_H:
+ out_ctrl = VDEC_H_OUT_CTRL1;
+ out_ctrl_ns = VDEC_H_OUT_CTRL_NS;
+ return;
+ }
+
+ value = cx25821_i2c_read(&dev->i2c_bus[0], out_ctrl, &tmp);
+ value &= 0xFFFFFF7F; /* clear BLUE_FIELD_EN */
+ if (enable)
+ value |= 0x00000080; /* set BLUE_FIELD_EN */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], out_ctrl, value);
+
+ value = cx25821_i2c_read(&dev->i2c_bus[0], out_ctrl_ns, &tmp);
+ value &= 0xFFFFFF7F;
+ if (enable)
+ value |= 0x00000080; /* set BLUE_FIELD_EN */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], out_ctrl_ns, value);
+}
+
+static int medusa_initialize_ntsc(struct cx25821_dev *dev)
+{
+ int ret_val = 0;
+ int i = 0;
+ u32 value = 0;
+ u32 tmp = 0;
+
+ mutex_lock(&dev->lock);
+
+ for (i = 0; i < MAX_DECODERS; i++) {
+ /* set video format NTSC-M */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
+ &tmp);
+ value &= 0xFFFFFFF0;
+ /* enable the fast locking mode bit[16] */
+ value |= 0x10001;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
+ value);
+
+ /* resolution NTSC 720x480 */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ HORIZ_TIM_CTRL + (0x200 * i), &tmp);
+ value &= 0x00C00C00;
+ value |= 0x612D0074;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ HORIZ_TIM_CTRL + (0x200 * i), value);
+
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ VERT_TIM_CTRL + (0x200 * i), &tmp);
+ value &= 0x00C00C00;
+ value |= 0x1C1E001A; /* vblank_cnt + 2 to get camera ID */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VERT_TIM_CTRL + (0x200 * i), value);
+
+ /* chroma subcarrier step size */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ SC_STEP_SIZE + (0x200 * i), 0x43E00000);
+
+ /* enable VIP optional active */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ OUT_CTRL_NS + (0x200 * i), &tmp);
+ value &= 0xFFFBFFFF;
+ value |= 0x00040000;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ OUT_CTRL_NS + (0x200 * i), value);
+
+ /* enable VIP optional active (VIP_OPT_AL) for direct output. */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
+ &tmp);
+ value &= 0xFFFBFFFF;
+ value |= 0x00040000;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
+ value);
+
+ /*
+ * clear VPRES_VERT_EN bit, fixes the chroma run away problem
+ * when the input switching rate < 16 fields
+ */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ MISC_TIM_CTRL + (0x200 * i), &tmp);
+ /* disable special play detection */
+ value = setBitAtPos(value, 14);
+ value = clearBitAtPos(value, 15);
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ MISC_TIM_CTRL + (0x200 * i), value);
+
+ /* set vbi_gate_en to 0 */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
+ &tmp);
+ value = clearBitAtPos(value, 29);
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
+ value);
+
+ /* Enable the generation of blue field output if no video */
+ medusa_enable_bluefield_output(dev, i, 1);
+ }
+
+ for (i = 0; i < MAX_ENCODERS; i++) {
+ /* NTSC hclock */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_1 + (0x100 * i), &tmp);
+ value &= 0xF000FC00;
+ value |= 0x06B402D0;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_1 + (0x100 * i), value);
+
+ /* burst begin and burst end */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_2 + (0x100 * i), &tmp);
+ value &= 0xFF000000;
+ value |= 0x007E9054;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_2 + (0x100 * i), value);
+
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_3 + (0x100 * i), &tmp);
+ value &= 0xFC00FE00;
+ value |= 0x00EC00F0;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_3 + (0x100 * i), value);
+
+ /* set NTSC vblank, no phase alternation, 7.5 IRE pedestal */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_4 + (0x100 * i), &tmp);
+ value &= 0x00FCFFFF;
+ value |= 0x13020000;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_4 + (0x100 * i), value);
+
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_5 + (0x100 * i), &tmp);
+ value &= 0xFFFF0000;
+ value |= 0x0000E575;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_5 + (0x100 * i), value);
+
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_6 + (0x100 * i), 0x009A89C1);
+
+ /* Subcarrier Increment */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_7 + (0x100 * i), 0x21F07C1F);
+ }
+
+ /* set picture resolutions */
+ /* 0 - 720 */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], HSCALE_CTRL, 0x0);
+ /* 0 - 480 */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], VSCALE_CTRL, 0x0);
+
+ /* set Bypass input format to NTSC 525 lines */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], BYP_AB_CTRL, &tmp);
+ value |= 0x00080200;
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
+
+ mutex_unlock(&dev->lock);
+
+ return ret_val;
+}
+
+static int medusa_PALCombInit(struct cx25821_dev *dev, int dec)
+{
+ int ret_val = -1;
+ u32 value = 0, tmp = 0;
+
+ /* Setup for 2D threshold */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_HFS_CFG + (0x200 * dec),
+ 0x20002861);
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_HFD_CFG + (0x200 * dec),
+ 0x20002861);
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_LF_CFG + (0x200 * dec),
+ 0x200A1023);
+
+ /* Setup flat chroma and luma thresholds */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ COMB_FLAT_THRESH_CTRL + (0x200 * dec), &tmp);
+ value &= 0x06230000;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ COMB_FLAT_THRESH_CTRL + (0x200 * dec), value);
+
+ /* set comb 2D blend */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_BLEND + (0x200 * dec),
+ 0x210F0F0F);
+
+ /* COMB MISC CONTROL */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], COMB_MISC_CTRL + (0x200 * dec),
+ 0x41120A7F);
+
+ return ret_val;
+}
+
+static int medusa_initialize_pal(struct cx25821_dev *dev)
+{
+ int ret_val = 0;
+ int i = 0;
+ u32 value = 0;
+ u32 tmp = 0;
+
+ mutex_lock(&dev->lock);
+
+ for (i = 0; i < MAX_DECODERS; i++) {
+ /* set video format PAL-BDGHI */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
+ &tmp);
+ value &= 0xFFFFFFF0;
+ /* enable the fast locking mode bit[16] */
+ value |= 0x10004;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
+ value);
+
+ /* resolution PAL 720x576 */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ HORIZ_TIM_CTRL + (0x200 * i), &tmp);
+ value &= 0x00C00C00;
+ value |= 0x632D007D;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ HORIZ_TIM_CTRL + (0x200 * i), value);
+
+ /* vblank656_cnt=x26, vactive_cnt=240h, vblank_cnt=x24 */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ VERT_TIM_CTRL + (0x200 * i), &tmp);
+ value &= 0x00C00C00;
+ value |= 0x28240026; /* vblank_cnt + 2 to get camera ID */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VERT_TIM_CTRL + (0x200 * i), value);
+
+ /* chroma subcarrier step size */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ SC_STEP_SIZE + (0x200 * i), 0x5411E2D0);
+
+ /* enable VIP optional active */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ OUT_CTRL_NS + (0x200 * i), &tmp);
+ value &= 0xFFFBFFFF;
+ value |= 0x00040000;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ OUT_CTRL_NS + (0x200 * i), value);
+
+ /* enable VIP optional active (VIP_OPT_AL) for direct output. */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
+ &tmp);
+ value &= 0xFFFBFFFF;
+ value |= 0x00040000;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
+ value);
+
+ /*
+ * clear VPRES_VERT_EN bit, fixes the chroma run away problem
+ * when the input switching rate < 16 fields
+ */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ MISC_TIM_CTRL + (0x200 * i), &tmp);
+ /* disable special play detection */
+ value = setBitAtPos(value, 14);
+ value = clearBitAtPos(value, 15);
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ MISC_TIM_CTRL + (0x200 * i), value);
+
+ /* set vbi_gate_en to 0 */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
+ &tmp);
+ value = clearBitAtPos(value, 29);
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
+ value);
+
+ medusa_PALCombInit(dev, i);
+
+ /* Enable the generation of blue field output if no video */
+ medusa_enable_bluefield_output(dev, i, 1);
+ }
+
+ for (i = 0; i < MAX_ENCODERS; i++) {
+ /* PAL hclock */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_1 + (0x100 * i), &tmp);
+ value &= 0xF000FC00;
+ value |= 0x06C002D0;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_1 + (0x100 * i), value);
+
+ /* burst begin and burst end */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_2 + (0x100 * i), &tmp);
+ value &= 0xFF000000;
+ value |= 0x007E9754;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_2 + (0x100 * i), value);
+
+ /* hblank and vactive */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_3 + (0x100 * i), &tmp);
+ value &= 0xFC00FE00;
+ value |= 0x00FC0120;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_3 + (0x100 * i), value);
+
+ /* set PAL vblank, phase alternation, 0 IRE pedestal */
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_4 + (0x100 * i), &tmp);
+ value &= 0x00FCFFFF;
+ value |= 0x14010000;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_4 + (0x100 * i), value);
+
+ value =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ DENC_A_REG_5 + (0x100 * i), &tmp);
+ value &= 0xFFFF0000;
+ value |= 0x0000F078;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_5 + (0x100 * i), value);
+
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_6 + (0x100 * i), 0x00A493CF);
+
+ /* Subcarrier Increment */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ DENC_A_REG_7 + (0x100 * i), 0x2A098ACB);
+ }
+
+ /* set picture resolutions */
+ /* 0 - 720 */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], HSCALE_CTRL, 0x0);
+ /* 0 - 576 */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], VSCALE_CTRL, 0x0);
+
+ /* set Bypass input format to PAL 625 lines */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], BYP_AB_CTRL, &tmp);
+ value &= 0xFFF7FDFF;
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
+
+ mutex_unlock(&dev->lock);
+
+ return ret_val;
+}
+
+int medusa_set_videostandard(struct cx25821_dev *dev)
+{
+ int status = STATUS_SUCCESS;
+ u32 value = 0, tmp = 0;
+
+ if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
+ status = medusa_initialize_pal(dev);
+ else
+ status = medusa_initialize_ntsc(dev);
+
+ /* Enable DENC_A output */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], DENC_A_REG_4, &tmp);
+ value = setBitAtPos(value, 4);
+ status = cx25821_i2c_write(&dev->i2c_bus[0], DENC_A_REG_4, value);
+
+ /* Enable DENC_B output */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], DENC_B_REG_4, &tmp);
+ value = setBitAtPos(value, 4);
+ status = cx25821_i2c_write(&dev->i2c_bus[0], DENC_B_REG_4, value);
+
+ return status;
+}
+
+void medusa_set_resolution(struct cx25821_dev *dev, int width,
+ int decoder_select)
+{
+ int decoder = 0;
+ int decoder_count = 0;
+ int ret_val = 0;
+ u32 hscale = 0x0;
+ u32 vscale = 0x0;
+ const int MAX_WIDTH = 720;
+
+ mutex_lock(&dev->lock);
+
+ /* validate the width - cannot be negative */
+ if (width > MAX_WIDTH) {
+ pr_info("%s(): width %d > MAX_WIDTH %d ! resetting to MAX_WIDTH\n",
+ __func__, width, MAX_WIDTH);
+ width = MAX_WIDTH;
+ }
+
+ if (decoder_select <= 7 && decoder_select >= 0) {
+ decoder = decoder_select;
+ decoder_count = decoder_select + 1;
+ } else {
+ decoder = 0;
+ decoder_count = _num_decoders;
+ }
+
+ switch (width) {
+ case 320:
+ hscale = 0x13E34B;
+ vscale = 0x0;
+ break;
+
+ case 352:
+ hscale = 0x10A273;
+ vscale = 0x0;
+ break;
+
+ case 176:
+ hscale = 0x3115B2;
+ vscale = 0x1E00;
+ break;
+
+ case 160:
+ hscale = 0x378D84;
+ vscale = 0x1E00;
+ break;
+
+ default: /* 720 */
+ hscale = 0x0;
+ vscale = 0x0;
+ break;
+ }
+
+ for (; decoder < decoder_count; decoder++) {
+ /* write scaling values for each decoder */
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ HSCALE_CTRL + (0x200 * decoder), hscale);
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VSCALE_CTRL + (0x200 * decoder), vscale);
+ }
+
+ mutex_unlock(&dev->lock);
+}
+
+static void medusa_set_decoderduration(struct cx25821_dev *dev, int decoder,
+ int duration)
+{
+ int ret_val = 0;
+ u32 fld_cnt = 0;
+ u32 tmp = 0;
+ u32 disp_cnt_reg = DISP_AB_CNT;
+
+ mutex_lock(&dev->lock);
+
+ /* no support */
+ if (decoder < VDEC_A && decoder > VDEC_H) {
+ mutex_unlock(&dev->lock);
+ return;
+ }
+
+ switch (decoder) {
+ default:
+ break;
+ case VDEC_C:
+ case VDEC_D:
+ disp_cnt_reg = DISP_CD_CNT;
+ break;
+ case VDEC_E:
+ case VDEC_F:
+ disp_cnt_reg = DISP_EF_CNT;
+ break;
+ case VDEC_G:
+ case VDEC_H:
+ disp_cnt_reg = DISP_GH_CNT;
+ break;
+ }
+
+ _display_field_cnt[decoder] = duration;
+
+ /* update hardware */
+ fld_cnt = cx25821_i2c_read(&dev->i2c_bus[0], disp_cnt_reg, &tmp);
+
+ if (!(decoder % 2)) { /* EVEN decoder */
+ fld_cnt &= 0xFFFF0000;
+ fld_cnt |= duration;
+ } else {
+ fld_cnt &= 0x0000FFFF;
+ fld_cnt |= ((u32) duration) << 16;
+ }
+
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], disp_cnt_reg, fld_cnt);
+
+ mutex_unlock(&dev->lock);
+}
+
+/* Map to Medusa register setting */
+static int mapM(int srcMin,
+ int srcMax, int srcVal, int dstMin, int dstMax, int *dstVal)
+{
+ int numerator;
+ int denominator;
+ int quotient;
+
+ if ((srcMin == srcMax) || (srcVal < srcMin) || (srcVal > srcMax))
+ return -1;
+ /*
+ * This is the overall expression used:
+ * *dstVal =
+ * (srcVal - srcMin)*(dstMax - dstMin) / (srcMax - srcMin) + dstMin;
+ * but we need to account for rounding so below we use the modulus
+ * operator to find the remainder and increment if necessary.
+ */
+ numerator = (srcVal - srcMin) * (dstMax - dstMin);
+ denominator = srcMax - srcMin;
+ quotient = numerator / denominator;
+
+ if (2 * (numerator % denominator) >= denominator)
+ quotient++;
+
+ *dstVal = quotient + dstMin;
+
+ return 0;
+}
+
+static unsigned long convert_to_twos(long numeric, unsigned long bits_len)
+{
+ unsigned char temp;
+
+ if (numeric >= 0)
+ return numeric;
+ else {
+ temp = ~(abs(numeric) & 0xFF);
+ temp += 1;
+ return temp;
+ }
+}
+
+int medusa_set_brightness(struct cx25821_dev *dev, int brightness, int decoder)
+{
+ int ret_val = 0;
+ int value = 0;
+ u32 val = 0, tmp = 0;
+
+ mutex_lock(&dev->lock);
+ if ((brightness > VIDEO_PROCAMP_MAX)
+ || (brightness < VIDEO_PROCAMP_MIN)) {
+ mutex_unlock(&dev->lock);
+ return -1;
+ }
+ ret_val =
+ mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, brightness,
+ SIGNED_BYTE_MIN, SIGNED_BYTE_MAX, &value);
+ value = convert_to_twos(value, 8);
+ val =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ VDEC_A_BRITE_CTRL + (0x200 * decoder), &tmp);
+ val &= 0xFFFFFF00;
+ ret_val |=
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VDEC_A_BRITE_CTRL + (0x200 * decoder),
+ val | value);
+ mutex_unlock(&dev->lock);
+ return ret_val;
+}
+
+int medusa_set_contrast(struct cx25821_dev *dev, int contrast, int decoder)
+{
+ int ret_val = 0;
+ int value = 0;
+ u32 val = 0, tmp = 0;
+
+ mutex_lock(&dev->lock);
+
+ if ((contrast > VIDEO_PROCAMP_MAX) || (contrast < VIDEO_PROCAMP_MIN)) {
+ mutex_unlock(&dev->lock);
+ return -1;
+ }
+
+ ret_val =
+ mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, contrast,
+ UNSIGNED_BYTE_MIN, UNSIGNED_BYTE_MAX, &value);
+ val =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ VDEC_A_CNTRST_CTRL + (0x200 * decoder), &tmp);
+ val &= 0xFFFFFF00;
+ ret_val |=
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VDEC_A_CNTRST_CTRL + (0x200 * decoder),
+ val | value);
+
+ mutex_unlock(&dev->lock);
+ return ret_val;
+}
+
+int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder)
+{
+ int ret_val = 0;
+ int value = 0;
+ u32 val = 0, tmp = 0;
+
+ mutex_lock(&dev->lock);
+
+ if ((hue > VIDEO_PROCAMP_MAX) || (hue < VIDEO_PROCAMP_MIN)) {
+ mutex_unlock(&dev->lock);
+ return -1;
+ }
+
+ ret_val =
+ mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, hue, SIGNED_BYTE_MIN,
+ SIGNED_BYTE_MAX, &value);
+
+ value = convert_to_twos(value, 8);
+ val =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ VDEC_A_HUE_CTRL + (0x200 * decoder), &tmp);
+ val &= 0xFFFFFF00;
+
+ ret_val |=
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VDEC_A_HUE_CTRL + (0x200 * decoder), val | value);
+
+ mutex_unlock(&dev->lock);
+ return ret_val;
+}
+
+int medusa_set_saturation(struct cx25821_dev *dev, int saturation, int decoder)
+{
+ int ret_val = 0;
+ int value = 0;
+ u32 val = 0, tmp = 0;
+
+ mutex_lock(&dev->lock);
+
+ if ((saturation > VIDEO_PROCAMP_MAX)
+ || (saturation < VIDEO_PROCAMP_MIN)) {
+ mutex_unlock(&dev->lock);
+ return -1;
+ }
+
+ ret_val =
+ mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, saturation,
+ UNSIGNED_BYTE_MIN, UNSIGNED_BYTE_MAX, &value);
+
+ val =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ VDEC_A_USAT_CTRL + (0x200 * decoder), &tmp);
+ val &= 0xFFFFFF00;
+ ret_val |=
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VDEC_A_USAT_CTRL + (0x200 * decoder),
+ val | value);
+
+ val =
+ cx25821_i2c_read(&dev->i2c_bus[0],
+ VDEC_A_VSAT_CTRL + (0x200 * decoder), &tmp);
+ val &= 0xFFFFFF00;
+ ret_val |=
+ cx25821_i2c_write(&dev->i2c_bus[0],
+ VDEC_A_VSAT_CTRL + (0x200 * decoder),
+ val | value);
+
+ mutex_unlock(&dev->lock);
+ return ret_val;
+}
+
+/* Program the display sequence and monitor output. */
+
+int medusa_video_init(struct cx25821_dev *dev)
+{
+ u32 value = 0, tmp = 0;
+ int ret_val = 0;
+ int i = 0;
+
+ mutex_lock(&dev->lock);
+
+ _num_decoders = dev->_max_num_decoders;
+
+ /* disable Auto source selection on all video decoders */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], MON_A_CTRL, &tmp);
+ value &= 0xFFFFF0FF;
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], MON_A_CTRL, value);
+
+ if (ret_val < 0)
+ goto error;
+
+ /* Turn off Master source switch enable */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], MON_A_CTRL, &tmp);
+ value &= 0xFFFFFFDF;
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], MON_A_CTRL, value);
+
+ if (ret_val < 0)
+ goto error;
+
+ mutex_unlock(&dev->lock);
+
+ for (i = 0; i < _num_decoders; i++)
+ medusa_set_decoderduration(dev, i, _display_field_cnt[i]);
+
+ mutex_lock(&dev->lock);
+
+ /* Select monitor as DENC A input, power up the DAC */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], DENC_AB_CTRL, &tmp);
+ value &= 0xFF70FF70;
+ value |= 0x00090008; /* set en_active */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], DENC_AB_CTRL, value);
+
+ if (ret_val < 0)
+ goto error;
+
+ /* enable input is VIP/656 */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], BYP_AB_CTRL, &tmp);
+ value |= 0x00040100; /* enable VIP */
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
+
+ if (ret_val < 0)
+ goto error;
+
+ /* select AFE clock to output mode */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], AFE_AB_DIAG_CTRL, &tmp);
+ value &= 0x83FFFFFF;
+ ret_val =
+ cx25821_i2c_write(&dev->i2c_bus[0], AFE_AB_DIAG_CTRL,
+ value | 0x10000000);
+
+ if (ret_val < 0)
+ goto error;
+
+ /* Turn on all of the data out and control output pins. */
+ value = cx25821_i2c_read(&dev->i2c_bus[0], PIN_OE_CTRL, &tmp);
+ value &= 0xFEF0FE00;
+ if (_num_decoders == MAX_DECODERS) {
+ /*
+ * Note: The octal board does not support control pins(bit16-19)
+ * These bits are ignored in the octal board.
+ *
+ * disable VDEC A-C port, default to Mobilygen Interface
+ */
+ value |= 0x010001F8;
+ } else {
+ /* disable VDEC A-C port, default to Mobilygen Interface */
+ value |= 0x010F0108;
+ }
+
+ value |= 7;
+ ret_val = cx25821_i2c_write(&dev->i2c_bus[0], PIN_OE_CTRL, value);
+
+ if (ret_val < 0)
+ goto error;
+
+
+ mutex_unlock(&dev->lock);
+
+ ret_val = medusa_set_videostandard(dev);
+
+ return ret_val;
+
+error:
+ mutex_unlock(&dev->lock);
+ return ret_val;
+}