/*
* cx18 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., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*/
#include "cx18-driver.h"
#include "cx18-scb.h"
#include "cx18-irq.h"
#include "cx18-firmware.h"
#include "cx18-cards.h"
#include <linux/firmware.h>
#define CX18_PROC_SOFT_RESET 0xc70010
#define CX18_DDR_SOFT_RESET 0xc70014
#define CX18_CLOCK_SELECT1 0xc71000
#define CX18_CLOCK_SELECT2 0xc71004
#define CX18_HALF_CLOCK_SELECT1 0xc71008
#define CX18_HALF_CLOCK_SELECT2 0xc7100C
#define CX18_CLOCK_POLARITY1 0xc71010
#define CX18_CLOCK_POLARITY2 0xc71014
#define CX18_ADD_DELAY_ENABLE1 0xc71018
#define CX18_ADD_DELAY_ENABLE2 0xc7101C
#define CX18_CLOCK_ENABLE1 0xc71020
#define CX18_CLOCK_ENABLE2 0xc71024
#define CX18_REG_BUS_TIMEOUT_EN 0xc72024
#define CX18_AUDIO_ENABLE 0xc72014
#define CX18_REG_BUS_TIMEOUT_EN 0xc72024
#define CX18_FAST_CLOCK_PLL_INT 0xc78000
#define CX18_FAST_CLOCK_PLL_FRAC 0xc78004
#define CX18_FAST_CLOCK_PLL_POST 0xc78008
#define CX18_FAST_CLOCK_PLL_PRESCALE 0xc7800C
#define CX18_FAST_CLOCK_PLL_ADJUST_BANDWIDTH 0xc78010
#define CX18_SLOW_CLOCK_PLL_INT 0xc78014
#define CX18_SLOW_CLOCK_PLL_FRAC 0xc78018
#define CX18_SLOW_CLOCK_PLL_POST 0xc7801C
#define CX18_MPEG_CLOCK_PLL_INT 0xc78040
#define CX18_MPEG_CLOCK_PLL_FRAC 0xc78044
#define CX18_MPEG_CLOCK_PLL_POST 0xc78048
#define CX18_PLL_POWER_DOWN 0xc78088
#define CX18_SW1_INT_STATUS 0xc73104
#define CX18_SW1_INT_ENABLE_PCI 0xc7311C
#define CX18_SW2_INT_SET 0xc73140
#define CX18_SW2_INT_STATUS 0xc73144
#define CX18_ADEC_CONTROL 0xc78120
#define CX18_DDR_REQUEST_ENABLE 0xc80000
#define CX18_DDR_CHIP_CONFIG 0xc80004
#define CX18_DDR_REFRESH 0xc80008
#define CX18_DDR_TIMING1 0xc8000C
#define CX18_DDR_TIMING2 0xc80010
#define CX18_DDR_POWER_REG 0xc8001C
#define CX18_DDR_TUNE_LANE 0xc80048
#define CX18_DDR_INITIAL_EMRS 0xc80054
#define CX18_DDR_MB_PER_ROW_7 0xc8009C
#define CX18_DDR_BASE_63_ADDR 0xc804FC
#define CX18_WMB_CLIENT02 0xc90108
#define CX18_WMB_CLIENT05 0xc90114
#define CX18_WMB_CLIENT06 0xc90118
#define CX18_WMB_CLIENT07 0xc9011C
#define CX18_WMB_CLIENT08 0xc90120
#define CX18_WMB_CLIENT09 0xc90124
#define CX18_WMB_CLIENT10 0xc90128
#define CX18_WMB_CLIENT11 0xc9012C
#define CX18_WMB_CLIENT12 0xc90130
#define CX18_WMB_CLIENT13 0xc90134
#define CX18_WMB_CLIENT14 0xc90138
#define CX18_DSP0_INTERRUPT_MASK 0xd0004C
/* Encoder/decoder firmware sizes */
#define CX18_FW_CPU_SIZE (174716)
#define CX18_FW_APU_SIZE (141200)
#define APU_ROM_SYNC1 0x6D676553 /* "mgeS" */
#define APU_ROM_SYNC2 0x72646548 /* "rdeH" */
struct cx18_apu_rom_seghdr {
u32 sync1;
u32 sync2;
u32 addr;
u32 size;
};
static int load_cpu_fw_direct(const char *fn, u8 __iomem *mem, struct cx18 *cx, long size)
{
const struct firmware *fw = NULL;
int retries = 3;
int i, j;
u32 __iomem *dst = (u32 __iomem *)mem;
const u32 *src;
retry:
if (!retries || request_firmware(&fw, fn, &cx->dev->dev)) {
CX18_ERR("Unable to open firmware %s (must be %ld bytes)\n",
fn, size);
CX18_ERR("Did you put the firmware in the hotplug firmware directory?\n");
return -ENOMEM;
}
src = (const u32 *)fw->data;
if (fw->size != size) {
/* Due to race conditions in firmware loading (esp. with
udev <0.95) the wrong file was sometimes loaded. So we check
filesizes to see if at least the right-sized file was
loaded. If not, then we retry. */
CX18_INFO("retry: file loaded was not %s (expected size %ld, got %zd)\n",
fn, size, fw->size);
release_firmware(fw);
retries--;
goto retry;
}
for (i = 0; i < fw->size; i += 4096) {
setup_page(i);
for (j = i; j < fw->size && j < i + 4096; j += 4) {
/* no need for endianness conversion on the ppc */
__raw_writel(*src, dst);
if (__raw_readl(dst) != *src) {
CX18_ERR("Mismatch at offset %x\n", i);
release_firmware(fw);
return -EIO;
}
dst++;
src++;
}
}
if (!test_bit(CX18_F_I_LOADED_FW, &cx->i_flags))
CX18_INFO("loaded %s firmware (%zd bytes)\n", fn, fw->size);
release_firmware(fw);
return size;
}
static int load_apu_fw_direct(const char *fn, u8 __iomem *dst, struct cx18 *cx, long size)
{
const struct firmware *fw = NULL;
int retries = 3;
int i, j;
const u32 *src;
struct cx18_apu_rom_seghdr seghdr;
const u8 *vers;
u32 offset = 0;
u32 apu_version = 0;
int sz;
retry:
if (!retries || request_firmware(&fw, fn, &cx->dev->dev)) {
CX18_ERR("unable to open firmware %s (must be %ld bytes)\n",
fn, size);
CX18_ERR("did you put the firmware in the hotplug firmware directory?\n");
return -ENOMEM;
}
src = (const u32 *)fw->data;
vers = fw->data + sizeof(seghdr);
sz = fw->size;
if (fw->size != size) {
/* Due to race conditions in firmware loading (esp. with
udev <0.95) the wrong file was sometimes loaded. So we check
filesizes to see if at least the right-sized file was
loaded. If not, then we retry. */
CX18_INFO("retry: file loaded was not %s (expected size %ld, got %zd)\n",
fn, size, fw->size);
release_firmware(fw);
retries--;
goto retry;
}
apu_version = (vers[0] << 24) | (vers[4] << 16) | vers[32];
while (offset + sizeof(seghdr) < size) {
/* TODO: byteswapping */
memcpy(&seghdr, src + offset / 4, sizeof(seghdr));
offset += sizeof(seghdr);
if (seghdr.sync1 != APU_ROM_SYNC1 ||
seghdr.sync2 != APU_ROM_SYNC2) {
offset += seghdr.size;
continue;
}
CX18_DEBUG_INFO("load segment %x-%x\n", seghdr.addr,
seghdr.addr + seghdr.size - 1);
if (offset + seghdr.size > sz)
break;
for (i = 0; i < seghdr.size; i += 4096) {
setup_page(offset + i);
for (j = i; j < seghdr.size && j < i + 4096; j += 4) {
/* no need for endianness conversion on the ppc */
__raw_writel(src[(offset + j) / 4], dst + seghdr.addr + j);
if (__raw_readl(dst + seghdr.addr + j) != src[(offset + j) / 4]) {
CX18_ERR("Mismatch at offset %x\n", offset + j);
release_firmware(fw);
return -EIO;
}
}
}
offset += seghdr.size;
}
if (!test_bit(CX18_F_I_LOADED_FW, &cx->i_flags))
CX18_INFO("loaded %s firmware V%08x (%zd bytes)\n",
fn, apu_version, fw->size);
release_firmware(fw);
/* Clear bit0 for APU to start from 0 */
write_reg(read_reg(0xc72030) & ~1, 0xc72030);
return size;
}
void cx18_halt_firmware(struct cx18 *cx)
{
CX18_DEBUG_INFO("Preparing for firmware halt.\n");
write_reg(0x000F000F, CX18_PROC_SOFT_RESET); /* stop the fw */
write_reg(0x00020002, CX18_ADEC_CONTROL);
}
void cx18_init_power(struct cx18 *cx, int lowpwr)
{
/* power-down Spare and AOM PLLs */
/* power-up fast, slow and mpeg PLLs */
write_reg(0x00000008, CX18_PLL_POWER_DOWN);
/* ADEC out of sleep */
write_reg(0x00020000, CX18_ADEC_CONTROL);
/* The fast clock is at 200/245 MHz */
write_reg(lowpwr ? 0xD : 0x11, CX18_FAST_CLOCK_PLL_INT);
write_reg(lowpwr ? 0x1EFBF37 : 0x038E3D7, CX18_FAST_CLOCK_PLL_FRAC);
write_reg(2, CX18_FAST_CLOCK_PLL_POST);
write_reg(1, CX18_FAST_CLOCK_PLL_PRESCALE);
write_reg(4, CX18_FAST_CLOCK_PLL_ADJUST_BANDWIDTH);
/* set slow clock to 125/120 MHz */
write_reg(lowpwr ? 0x11 : 0x10, CX18_SLOW_CLOCK_PLL_INT);
write_reg(lowpwr ? 0xEBAF05 : 0x18618A8, CX18_SLOW_CLOCK_PLL_FRAC);
write_reg(4, CX18_SLOW_CLOCK_PLL_POST);
/* mpeg clock pll 54MHz */
write_reg(0xF, CX18_MPEG_CLOCK_PLL_INT);
write_reg(0x2BCFEF, CX18_MPEG_CLOCK_PLL_FRAC);
write_reg(8, CX18_MPEG_CLOCK_PLL_POST);
/* Defaults */
/* APU = SC or SC/2 = 125/62.5 */
/* EPU = SC = 125 */
/* DDR = FC = 180 */
/* ENC = SC = 125 */
/* AI1 = SC = 125 */
/* VIM2 = disabled */
/* PCI = FC/2 = 90 */
/* AI2 = disabled */
/* DEMUX = disabled */
/* AO = SC/2 = 62.5 */
/* SER = 54MHz */
/* VFC = disabled */
/* USB = disabled */
write_reg(lowpwr ? 0xFFFF0020 : 0x00060004, CX18_CLOCK_SELECT1);
write_reg(lowpwr ? 0xFFFF0004 : 0x00060006, CX18_CLOCK_SELECT2);
write_reg(0xFFFF0002, CX18_HALF_CLOCK_SELECT1);
write_reg(0xFFFF0104, CX18_HALF_CLOCK_SELECT2);
write_reg(0xFFFF9026, CX18_CLOCK_ENABLE1);
write_reg(0xFFFF3105, CX18_CLOCK_ENABLE2);
}
void cx18_init_memory(struct cx18 *cx)
{
cx18_msleep_timeout(10, 0);
write_reg(0x10000, CX18_DDR_SOFT_RESET);
cx18_msleep_timeout(10, 0);
write_reg(cx->card->ddr.chip_config, CX18_DDR_CHIP_CONFIG);
cx18_msleep_timeout(10, 0);
write_reg(cx->card->ddr.refresh, CX18_DDR_REFRESH);
write_reg(cx->card->ddr.timing1, CX18_DDR_TIMING1);
write_reg(cx->card->ddr.timing2, CX18_DDR_TIMING2);
cx18_msleep_timeout(10, 0);
/* Initialize DQS pad time */
write_reg(cx->card->ddr.tune_lane, CX18_DDR_TUNE_LANE);
write_reg(cx->card->ddr.initial_emrs, CX18_DDR_INITIAL_EMRS);
cx18_msleep_timeout(10, 0);
write_reg(0x20000, CX18_DDR_SOFT_RESET);
cx18_msleep_timeout(10, 0);
/* use power-down mode when idle */
write_reg(0x00000010, CX18_DDR_POWER_REG);
write_reg(0x10001, CX18_REG_BUS_TIMEOUT_EN);
write_reg(0x48, CX18_DDR_MB_PER_ROW_7);
write_reg(0xE0000, CX18_DDR_BASE_63_ADDR);
write_reg(0x00000101, CX18_WMB_CLIENT02); /* AO */
write_reg(0x00000101, CX18_WMB_CLIENT09); /* AI2 */
write_reg(0x00000101, CX18_WMB_CLIENT05); /* VIM1 */
write_reg(0x00000101, CX18_WMB_CLIENT06); /* AI1 */
write_reg(0x00000101, CX18_WMB_CLIENT07); /* 3D comb */
write_reg(0x00000101, CX18_WMB_CLIENT10); /* ME */
write_reg(0x00000101, CX18_WMB_CLIENT12); /* ENC */
write_reg(0x00000101, CX18_WMB_CLIENT13); /* PK */
write_reg(0x00000101, CX18_WMB_CLIENT11); /* RC */
write_reg(0x00000101, CX18_WMB_CLIENT14); /* AVO */
}
int cx18_firmware_init(struct cx18 *cx)
{
/* Allow chip to control CLKRUN */
write_reg(0x5, CX18_DSP0_INTERRUPT_MASK);
write_reg(0x000F000F, CX18_PROC_SOFT_RESET); /* stop the fw */
cx18_msleep_timeout(1, 0);
sw1_irq_enable(IRQ_CPU_TO_EPU | IRQ_APU_TO_EPU);
sw2_irq_enable(IRQ_CPU_TO_EPU_ACK | IRQ_APU_TO_EPU_ACK);
/* Only if the processor is not running */
if (read_reg(CX18_PROC_SOFT_RESET) & 8) {
int sz = load_apu_fw_direct("v4l-cx23418-apu.fw",
cx->enc_mem, cx, CX18_FW_APU_SIZE);
sz = sz <= 0 ? sz : load_cpu_fw_direct("v4l-cx23418-cpu.fw",
cx->enc_mem, cx, CX18_FW_CPU_SIZE);
if (sz > 0) {
int retries = 0;
/* start the CPU */
write_reg(0x00080000, CX18_PROC_SOFT_RESET);
while (retries++ < 50) { /* Loop for max 500mS */
if ((read_reg(CX18_PROC_SOFT_RESET) & 1) == 0)
break;
cx18_msleep_timeout(10, 0);
}
cx18_msleep_timeout(200, 0);
if (retries == 51) {
CX18_ERR("Could not start the CPU\n");
return -EIO;
}
}
if (sz <= 0)
return -EIO;
}
/* initialize GPIO */
write_reg(0x14001400, 0xC78110);
return 0;
}
