diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-av-firmware.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-av-firmware.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-av-firmware.c b/drivers/media/video/cx18/cx18-av-firmware.c new file mode 100644 index 0000000..526e142 --- /dev/null +++ b/drivers/media/video/cx18/cx18-av-firmware.c @@ -0,0 +1,120 @@ +/* + * cx18 ADEC firmware functions + * + * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#include "cx18-driver.h" +#include <linux/firmware.h> + +#define FWFILE "v4l-cx23418-dig.fw" + +int cx18_av_loadfw(struct cx18 *cx) +{ + const struct firmware *fw = NULL; + u32 size; + u32 v; + u8 *ptr; + int i; + + if (request_firmware(&fw, FWFILE, &cx->dev->dev) != 0) { + CX18_ERR("unable to open firmware %s\n", FWFILE); + return -EINVAL; + } + + cx18_av_write4(cx, CXADEC_CHIP_CTRL, 0x00010000); + cx18_av_write(cx, CXADEC_STD_DET_CTL, 0xf6); /* Byte 0 */ + + /* Reset the Mako core (Register is undocumented.) */ + cx18_av_write4(cx, 0x8100, 0x00010000); + + /* Put the 8051 in reset and enable firmware upload */ + cx18_av_write4(cx, CXADEC_DL_CTL, 0x0F000000); + + ptr = fw->data; + size = fw->size; + + for (i = 0; i < size; i++) { + u32 dl_control = 0x0F000000 | ((u32)ptr[i] << 16); + u32 value = 0; + int retries; + + for (retries = 0; retries < 5; retries++) { + cx18_av_write4(cx, CXADEC_DL_CTL, dl_control); + value = cx18_av_read4(cx, CXADEC_DL_CTL); + if ((value & 0x3F00) == (dl_control & 0x3F00)) + break; + } + if (retries >= 5) { + CX18_ERR("unable to load firmware %s\n", FWFILE); + release_firmware(fw); + return -EIO; + } + } + + cx18_av_write4(cx, CXADEC_DL_CTL, 0x13000000 | fw->size); + + /* Output to the 416 */ + cx18_av_and_or4(cx, CXADEC_PIN_CTRL1, ~0, 0x78000); + + /* Audio input control 1 set to Sony mode */ + /* Audio output input 2 is 0 for slave operation input */ + /* 0xC4000914[5]: 0 = left sample on WS=0, 1 = left sample on WS=1 */ + /* 0xC4000914[7]: 0 = Philips mode, 1 = Sony mode (1st SCK rising edge + after WS transition for first bit of audio word. */ + cx18_av_write4(cx, CXADEC_I2S_IN_CTL, 0x000000A0); + + /* Audio output control 1 is set to Sony mode */ + /* Audio output control 2 is set to 1 for master mode */ + /* 0xC4000918[5]: 0 = left sample on WS=0, 1 = left sample on WS=1 */ + /* 0xC4000918[7]: 0 = Philips mode, 1 = Sony mode (1st SCK rising edge + after WS transition for first bit of audio word. */ + /* 0xC4000918[8]: 0 = slave operation, 1 = master (SCK_OUT and WS_OUT + are generated) */ + cx18_av_write4(cx, CXADEC_I2S_OUT_CTL, 0x000001A0); + + /* set alt I2s master clock to /16 and enable alt divider i2s + passthrough */ + cx18_av_write4(cx, CXADEC_PIN_CFG3, 0x5000B687); + + cx18_av_write4(cx, CXADEC_STD_DET_CTL, 0x000000F6); + /* CxDevWrReg(CXADEC_STD_DET_CTL, 0x000000FF); */ + + /* Set bit 0 in register 0x9CC to signify that this is MiniMe. */ + /* Register 0x09CC is defined by the Merlin firmware, and doesn't + have a name in the spec. */ + cx18_av_write4(cx, 0x09CC, 1); + +#define CX18_AUDIO_ENABLE 0xc72014 + v = read_reg(CX18_AUDIO_ENABLE); + /* If bit 11 is 1 */ + if (v & 0x800) + write_reg(v & 0xFFFFFBFF, CX18_AUDIO_ENABLE); /* Clear bit 10 */ + + /* Enable WW auto audio standard detection */ + v = cx18_av_read4(cx, CXADEC_STD_DET_CTL); + v |= 0xFF; /* Auto by default */ + v |= 0x400; /* Stereo by default */ + v |= 0x14000000; + cx18_av_write4(cx, CXADEC_STD_DET_CTL, v); + + release_firmware(fw); + + CX18_INFO("loaded %s firmware (%d bytes)\n", FWFILE, size); + return 0; +} |
