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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* cx18 ADEC firmware functions
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
* Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
*/
#include "cx18-driver.h"
#include "cx18-io.h"
#include <linux/firmware.h>
#define CX18_AUDIO_ENABLE 0xc72014
#define CX18_AI1_MUX_MASK 0x30
#define CX18_AI1_MUX_I2S1 0x00
#define CX18_AI1_MUX_I2S2 0x10
#define CX18_AI1_MUX_843_I2S 0x20
#define CX18_AI1_MUX_INVALID 0x30
#define FWFILE "v4l-cx23418-dig.fw"
static int cx18_av_verifyfw(struct cx18 *cx, const struct firmware *fw)
{
struct v4l2_subdev *sd = &cx->av_state.sd;
int ret = 0;
const u8 *data;
u32 size;
int addr;
u32 expected, dl_control;
/* Ensure we put the 8051 in reset and enable firmware upload mode */
dl_control = cx18_av_read4(cx, CXADEC_DL_CTL);
do {
dl_control &= 0x00ffffff;
dl_control |= 0x0f000000;
cx18_av_write4_noretry(cx, CXADEC_DL_CTL, dl_control);
dl_control = cx18_av_read4(cx, CXADEC_DL_CTL);
} while ((dl_control & 0xff000000) != 0x0f000000);
/* Read and auto increment until at address 0x0000 */
while (dl_control & 0x3fff)
dl_control = cx18_av_read4(cx, CXADEC_DL_CTL);
data = fw->data;
size = fw->size;
for (addr = 0; addr < size; addr++) {
dl_control &= 0xffff3fff; /* ignore top 2 bits of address */
expected = 0x0f000000 | ((u32)data[addr] << 16) | addr;
if (expected != dl_control) {
CX18_ERR_DEV(sd, "verification of %s firmware load failed: expected %#010x got %#010x\n",
FWFILE, expected, dl_control);
ret = -EIO;
break;
}
dl_control = cx18_av_read4(cx, CXADEC_DL_CTL);
}
if (ret == 0)
CX18_INFO_DEV(sd, "verified load of %s firmware (%d bytes)\n",
FWFILE, size);
return ret;
}
int cx18_av_loadfw(struct cx18 *cx)
{
struct v4l2_subdev *sd = &cx->av_state.sd;
const struct firmware *fw = NULL;
u32 size;
u32 u, v;
const u8 *ptr;
int i;
int retries1 = 0;
if (request_firmware(&fw, FWFILE, &cx->pci_dev->dev) != 0) {
CX18_ERR_DEV(sd, "unable to open firmware %s\n", FWFILE);
return -EINVAL;
}
/* The firmware load often has byte errors, so allow for several
retries, both at byte level and at the firmware load level. */
while (retries1 < 5) {
cx18_av_write4_expect(cx, CXADEC_CHIP_CTRL, 0x00010000,
0x00008430, 0xffffffff); /* cx25843 */
cx18_av_write_expect(cx, CXADEC_STD_DET_CTL, 0xf6, 0xf6, 0xff);
/* Reset the Mako core, Register is alias of CXADEC_CHIP_CTRL */
cx18_av_write4_expect(cx, 0x8100, 0x00010000,
0x00008430, 0xffffffff); /* cx25843 */
/* Put the 8051 in reset and enable firmware upload */
cx18_av_write4_noretry(cx, CXADEC_DL_CTL, 0x0F000000);
ptr = fw->data;
size = fw->size;
for (i = 0; i < size; i++) {
u32 dl_control = 0x0F000000 | i | ((u32)ptr[i] << 16);
u32 value = 0;
int retries2;
int unrec_err = 0;
for (retries2 = 0; retries2 < CX18_MAX_MMIO_WR_RETRIES;
retries2++) {
cx18_av_write4_noretry(cx, CXADEC_DL_CTL,
dl_control);
udelay(10);
value = cx18_av_read4(cx, CXADEC_DL_CTL);
if (value == dl_control)
break;
/* Check if we can correct the byte by changing
the address. We can only write the lower
address byte of the address. */
if ((value & 0x3F00) != (dl_control & 0x3F00)) {
unrec_err = 1;
break;
}
}
if (unrec_err || retries2 >= CX18_MAX_MMIO_WR_RETRIES)
break;
}
if (i == size)
break;
retries1++;
}
if (retries1 >= 5) {
CX18_ERR_DEV(sd, "unable to load firmware %s\n", FWFILE);
release_firmware(fw);
return -EIO;
}
cx18_av_write4_expect(cx, CXADEC_DL_CTL,
0x03000000 | fw->size, 0x03000000, 0x13000000);
CX18_INFO_DEV(sd, "loaded %s firmware (%d bytes)\n", FWFILE, size);
if (cx18_av_verifyfw(cx, fw) == 0)
cx18_av_write4_expect(cx, CXADEC_DL_CTL,
0x13000000 | fw->size, 0x13000000, 0x13000000);
/* 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 /0x16 and enable alt divider i2s
passthrough */
cx18_av_write4(cx, CXADEC_PIN_CFG3, 0x5600B687);
cx18_av_write4_expect(cx, CXADEC_STD_DET_CTL, 0x000000F6, 0x000000F6,
0x3F00FFFF);
/* 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);
v = cx18_read_reg(cx, CX18_AUDIO_ENABLE);
/* If bit 11 is 1, clear bit 10 */
if (v & 0x800)
cx18_write_reg_expect(cx, v & 0xFFFFFBFF, CX18_AUDIO_ENABLE,
0, 0x400);
/* Toggle the AI1 MUX */
v = cx18_read_reg(cx, CX18_AUDIO_ENABLE);
u = v & CX18_AI1_MUX_MASK;
v &= ~CX18_AI1_MUX_MASK;
if (u == CX18_AI1_MUX_843_I2S || u == CX18_AI1_MUX_INVALID) {
/* Switch to I2S1 */
v |= CX18_AI1_MUX_I2S1;
cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE,
v, CX18_AI1_MUX_MASK);
/* Switch back to the A/V decoder core I2S output */
v = (v & ~CX18_AI1_MUX_MASK) | CX18_AI1_MUX_843_I2S;
} else {
/* Switch to the A/V decoder core I2S output */
v |= CX18_AI1_MUX_843_I2S;
cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE,
v, CX18_AI1_MUX_MASK);
/* Switch back to I2S1 or I2S2 */
v = (v & ~CX18_AI1_MUX_MASK) | u;
}
cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE,
v, CX18_AI1_MUX_MASK);
/* 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_expect(cx, CXADEC_STD_DET_CTL, v, v, 0x3F00FFFF);
release_firmware(fw);
return 0;
}
MODULE_FIRMWARE(FWFILE);
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