blob: 0e2906aa9d7d6e35beaeda33c9f58ae1b9d4f933 [file] [log] [blame]
/**************************************************
* HDMI CEC uboot code *
* *
**************************************************/
#ifdef CONFIG_CEC_WAKEUP
#include "secure_apb.h"
#include "cec_tx_reg.h"
#ifndef NULL
#define NULL ((void *)0)
#endif
#define CEC_DBG_PRINT
#define CEC_REG_DEBUG 0
#ifdef CEC_DBG_PRINT
static void cec_dbg_print(char *s, int v)
{
uart_puts(s);
uart_put_hex(v,8);
_udelay(100);
}
static void cec_dbg_prints(char *s)
{
uart_puts(s);
_udelay(100);
}
#if CEC_REG_DEBUG
static void cec_print_reg(char *s, int v, int l)
{
uart_puts(s);
uart_put_hex(v, l);
uart_puts("\n");
_udelay(1000);
}
#endif
#else
#define cec_dbg_print(s,v)
#define cec_dbg_prints(s)
#define cec_print_reg(s, v, l)
#endif
static void cec_reset_addr(void);
struct cec_tx_msg_t {
unsigned char buf[16];
unsigned char retry;
unsigned char len;
};
#define CEX_TX_MSG_BUF_NUM 4
#define CEC_TX_MSG_BUF_MASK (CEX_TX_MSG_BUF_NUM - 1)
struct cec_tx_msg {
struct cec_tx_msg_t msg[CEX_TX_MSG_BUF_NUM];
unsigned char send_idx;
unsigned char queue_idx;
};
struct cec_tx_msg cec_tx_msgs = {};
static int cec_strlen(char *p)
{
int i=0;
while (*p++)
i++;
return i;
}
static void *cec_memcpy(void *memto, const void *memfrom, unsigned int size)
{
char *tempfrom = (char *)memfrom;
char *tempto = (char *)memto;
if ((memto == NULL) || (memfrom == NULL))
return NULL;
while (size -- > 0)
*tempto++ = *tempfrom++;
return memto;
}
static unsigned long cec_rd_reg(unsigned long addr)
{
unsigned long data32;
data32 = 0;
data32 |= 0 << 16; // [16] cec_reg_wr
data32 |= 0 << 8; // [15:8] cec_reg_wrdata
data32 |= addr << 0; // [7:0] cec_reg_addr
writel(data32, AO_CECB_RW_REG);
data32 = ((readl(AO_CECB_RW_REG)) >> 24) & 0xff;
return (data32);
} /* cec_rd_reg */
static void cec_wr_reg (unsigned long addr, unsigned long data)
{
unsigned long data32;
data32 = 0;
data32 |= 1 << 16; // [16] cec_reg_wr
data32 |= data << 8; // [15:8] cec_reg_wrdata
data32 |= addr << 0; // [7:0] cec_reg_addr
writel(data32, AO_CECB_RW_REG);
} /* aocec_wr_only_reg */
static inline void cec_set_bits_dwc(uint32_t reg, uint32_t bits,
uint32_t start, uint32_t len)
{
unsigned int tmp;
tmp = cec_rd_reg(reg);
tmp &= ~(((1 << len) - 1) << start);
tmp |= (bits << start);
cec_wr_reg(reg, tmp);
}
static void cec_set_reg_bits(unsigned long addr, unsigned int value,
unsigned int offset, unsigned int len)
{
unsigned int data32 = 0;
data32 = readl(addr);
data32 &= ~(((1 << len) - 1) << offset);
data32 |= (value & ((1 << len) - 1)) << offset;
writel(data32, addr);
}
static void cec_rx_read_pos_plus(void)
{
(cec_msg.rx_read_pos == cec_msg.rx_buf_size - 1) ?
(cec_msg.rx_read_pos = 0) :
(cec_msg.rx_read_pos++);
}
#if CEC_REG_DEBUG
static void dump_cecb_reg(void)
{
int i = 0;
unsigned char reg;
unsigned int reg32;
reg32 = readl(AO_CECB_CLK_CNTL_REG0);
cec_print_reg("CLK_CNTL0:", reg32, 32);
reg32 = readl(AO_CECB_CLK_CNTL_REG1);
cec_print_reg("CLK_CNTL1:", reg32, 32);
reg32 = readl(AO_CECB_GEN_CNTL);
cec_print_reg("GEN_CNTL:", reg32, 32);
reg32 = readl(AO_CECB_RW_REG);
cec_print_reg("RW:", reg32, 32);
reg32 = readl(AO_CECB_INTR_MASKN);
cec_print_reg("INT_MASKN:", reg32, 32);
reg32 = readl(AO_CECB_INTR_STAT);
cec_print_reg("INT_STAT:", reg32, 32);
cec_print_reg("CEC_CTRL:", cec_rd_reg(DWC_CECB_CTRL), 8);
cec_print_reg("CEC_MASK:", cec_rd_reg(DWC_CECB_INTR_MASK), 8);
cec_print_reg("CEC_ADDR_L:", cec_rd_reg(DWC_CECB_LADD_LOW), 8);
cec_print_reg("CEC_ADDR_H:", cec_rd_reg(DWC_CECB_LADD_HIGH), 8);
cec_print_reg("CEC_TX_CNT:", cec_rd_reg(DWC_CECB_TX_CNT), 8);
cec_print_reg("CEC_RX_CNT:", cec_rd_reg(DWC_CECB_RX_CNT), 8);
cec_print_reg("CEC_LOCK:", cec_rd_reg(DWC_CECB_LOCK_BUF), 8);
cec_print_reg("CEC_WKUPCTRL:", cec_rd_reg(DWC_CECB_WAKEUPCTRL), 8);
cec_dbg_prints("RX buffer:");
for (i = 0; i < 16; i++) {
reg = cec_rd_reg(DWC_CECB_RX_DATA00 + i);
cec_dbg_print(" ", reg);
}
cec_dbg_prints("\n");
cec_dbg_prints("TX buffer:");
for (i = 0; i < 16; i++) {
reg = cec_rd_reg(DWC_CECB_TX_DATA00 + i);
cec_dbg_print(" ", reg);
}
cec_dbg_prints("\n");
}
#else
static inline void dump_cecb_reg(void) {}
#endif
void remote_cec_hw_reset(void)
{
unsigned int reg;
unsigned int data32;
cec_dbg_prints("cec reset\n");
reg = (0 << 31) |
(0 << 30) |
(1 << 28) | /* clk_div0/clk_div1 in turn */
((732-1) << 12) | /* Div_tcnt1 */
((733-1) << 0); /* Div_tcnt0 */
writel(reg, AO_CECB_CLK_CNTL_REG0);
reg = (0 << 13) |
((11-1) << 12) |
((8-1) << 0);
writel(reg, AO_CECB_CLK_CNTL_REG1);
reg = readl(AO_CECB_CLK_CNTL_REG0);
reg |= (1 << 31);
writel(reg, AO_CECB_CLK_CNTL_REG0);
_udelay(200);
reg |= (1 << 30);
writel(reg, AO_CECB_CLK_CNTL_REG0);
reg = readl(AO_RTI_PWR_CNTL_REG0);
reg |= (0x01 << 14); /* xtal gate */
writel(reg, AO_RTI_PWR_CNTL_REG0);
data32 = 0;
data32 |= (7 << 12); /* filter_del */
data32 |= (1 << 8); /* filter_tick: 1us */
data32 |= (1 << 3); /* enable system clock */
data32 |= 0 << 1; /* [2:1] cntl_clk: */
/* 0=Disable clk (Power-off mode); */
/* 1=Enable gated clock (Normal mode); */
/* 2=Enable free-run clk (Debug mode). */
data32 |= 1 << 0; /* [0] sw_reset: 1=Reset */
writel(data32, AO_CECB_GEN_CNTL);
/* Enable gated clock (Normal mode). */
cec_set_reg_bits(AO_CECB_GEN_CNTL, 1, 1, 1);
/* Release SW reset */
cec_set_reg_bits(AO_CECB_GEN_CNTL, 0, 0, 1);
/* set up pinmux */
writel(((readl(PERIPHS_PIN_MUX_B) & (~(0xF << 12))) | (5 << 12)),
PERIPHS_PIN_MUX_B);
/*enable the interrupt*/
writel(CECB_IRQ_EN_MASK, AO_CECB_INTR_MASKN);
cec_wr_reg(DWC_CECB_WAKEUPCTRL, 0);
cec_dbg_print("Set cec pinmux:0x", readl(PERIPHS_PIN_MUX_B));
cec_dbg_prints("\n");
}
static unsigned char remote_cec_ll_rx(void)
{
int i;
int len;
len = cec_rd_reg(DWC_CECB_RX_CNT);
cec_dbg_prints("cec R:");
for (i = 0; i < len; i++) {
cec_msg.buf[cec_msg.rx_write_pos].msg[i] = cec_rd_reg(DWC_CECB_RX_DATA00 + i);
cec_dbg_print(" ", cec_msg.buf[cec_msg.rx_write_pos].msg[i]);
}
/* clr CEC lock bit */
cec_wr_reg(DWC_CECB_LOCK_BUF, 0);
cec_msg.buf[cec_msg.rx_write_pos].msg_len = len;
cec_dbg_prints("\n");
return 0;
}
static void cec_buf_clear(void)
{
int i;
for (i = 0; i < 16; i++)
cec_msg.buf[cec_msg.rx_read_pos].msg[i] = 0;
}
static void cec_tx_buf_init(void)
{
int i, j;
for (j = 0; j < CEX_TX_MSG_BUF_NUM; j++) {
for (i = 0; i < 16; i++) {
cec_tx_msgs.msg[j].buf[i] = 0;
}
cec_tx_msgs.msg[j].retry = 0;
cec_tx_msgs.msg[j].len = 0;
}
}
static int cec_queue_tx_msg(unsigned char *msg, unsigned char len)
{
int s_idx, q_idx;
s_idx = cec_tx_msgs.send_idx;
q_idx = cec_tx_msgs.queue_idx;
if (((q_idx + 1) & CEC_TX_MSG_BUF_MASK) == s_idx) {
cec_dbg_prints("tx buffer full, abort msg\n");
cec_reset_addr();
return -1;
}
if (len && msg) {
cec_memcpy(cec_tx_msgs.msg[q_idx].buf, msg, len);
cec_tx_msgs.msg[q_idx].len = len;
cec_tx_msgs.queue_idx = (q_idx + 1) & CEC_TX_MSG_BUF_MASK;
}
return 0;
}
static int cec_triggle_tx(unsigned char *msg, unsigned char len)
{
int i = 0, lock;
while (1) {
/* send is in process */
lock = cec_rd_reg(DWC_CECB_LOCK_BUF);
if (lock) {
cec_dbg_prints("rx msg in tx\n");
return -1;
}
if (cec_rd_reg(DWC_CECB_CTRL) & 0x01)
i++;
else
break;
if (i > 25) {
cec_dbg_prints("wait busy timeout\n");
return -1;
}
}
cec_dbg_prints("cec T:");
for (i = 0; i < len; i++) {
cec_wr_reg(DWC_CECB_TX_DATA00 + i, msg[i]);
cec_dbg_print(" ", msg[i]);
}
cec_dbg_prints("\n");
/* start send */
cec_wr_reg(DWC_CECB_TX_CNT, len);
cec_set_bits_dwc(DWC_CECB_CTRL, 3, 0, 3);
return 0;
}
static int remote_cec_ll_tx(unsigned char *msg, unsigned char len)
{
cec_queue_tx_msg(msg, len);
cec_triggle_tx(msg, len);
return 0;
}
static int ping_cec_ll_tx(unsigned char *msg, unsigned char len)
{
unsigned int reg, ret = 0;
remote_cec_ll_tx(msg, len);
while (cec_tx_msgs.queue_idx != cec_tx_msgs.send_idx) {
reg = readl(AO_CECB_INTR_STAT);
writel(reg, AO_CECB_INTR_CLR);
if (reg & CECB_IRQ_TX_DONE) {
ret = TX_DONE;
cec_tx_msgs.send_idx = (cec_tx_msgs.send_idx + 1) & CEC_TX_MSG_BUF_MASK;
cec_dbg_prints("ping_cec_tx:TX_DONE\n");
break;
}
if (reg & CECB_IRQ_TX_NACK) {
ret = TX_ERROR;
cec_tx_msgs.send_idx = (cec_tx_msgs.send_idx + 1) & CEC_TX_MSG_BUF_MASK;
cec_dbg_prints("ping_cec_tx:TX_ERROR\n");
break;
}
if (reg & CECB_IRQ_TX_ARB_LOST) {
ret = TX_BUSY;
cec_tx_msgs.send_idx = (cec_tx_msgs.send_idx + 1) & CEC_TX_MSG_BUF_MASK;
cec_dbg_prints("ping_cec_tx:TX_ABT_LOST\n");
break;
}
if (reg & CECB_IRQ_TX_ERR_INITIATOR) {
ret = TX_BUSY;
cec_tx_msgs.send_idx = (cec_tx_msgs.send_idx + 1) & CEC_TX_MSG_BUF_MASK;
cec_dbg_prints("ping_cec_tx:TX_ERR_INIT\n");
break;
}
_udelay(500);
}
return ret;
}
#define DEVICE_TV 0
#define DEVICE_RECORDER 1
#define DEVICE_RESERVED 2
#define DEVICE_TUNER 3
#define DEVICE_PLAYBACK 4
#define DEVICE_AUDIO_SYSTEM 5
#define DEVICE_PURE_CEC_SWITCH 6
#define DEVICE_VIDEO_PROCESSOR 7
static unsigned char log_addr_to_devtye(unsigned int addr)
{
static unsigned char addr_map[] = {
DEVICE_TV,
DEVICE_RECORDER,
DEVICE_RECORDER,
DEVICE_TUNER,
DEVICE_PLAYBACK,
DEVICE_AUDIO_SYSTEM,
DEVICE_TUNER,
DEVICE_TUNER,
DEVICE_PLAYBACK,
DEVICE_RECORDER,
DEVICE_TUNER,
DEVICE_PLAYBACK,
DEVICE_RESERVED,
DEVICE_RESERVED,
DEVICE_TV
};
return addr_map[addr & 0xf];
}
static void cec_report_physical_address(void)
{
unsigned char msg[5];
unsigned char phy_addr_ab = (readl(AO_DEBUG_REG1) >> 8) & 0xff;
unsigned char phy_addr_cd = readl(AO_DEBUG_REG1) & 0xff;
msg[0] = ((cec_msg.log_addr & 0xf) << 4)| CEC_BROADCAST_ADDR;
msg[1] = CEC_OC_REPORT_PHYSICAL_ADDRESS;
msg[2] = phy_addr_ab;
msg[3] = phy_addr_cd;
msg[4] = log_addr_to_devtye(cec_msg.log_addr);
remote_cec_ll_tx(msg, 5);
}
static void cec_report_device_power_status(int dst)
{
unsigned char msg[3];
msg[0] = ((cec_msg.log_addr & 0xf) << 4)| (dst & 0xf);
msg[1] = CEC_OC_REPORT_POWER_STATUS;
msg[2] = cec_msg.power_status;
remote_cec_ll_tx(msg, 3);
}
static void cec_set_stream_path(void)
{
unsigned char phy_addr_ab = (readl(AO_DEBUG_REG1) >> 8) & 0xff;
unsigned char phy_addr_cd = readl(AO_DEBUG_REG1) & 0xff;
if ((hdmi_cec_func_config >> CEC_FUNC_MASK) & 0x1) {
if ((hdmi_cec_func_config >> AUTO_POWER_ON_MASK) & 0x1) {
if ((phy_addr_ab == cec_msg.buf[cec_msg.rx_read_pos].msg[2]) &&
(phy_addr_cd == cec_msg.buf[cec_msg.rx_read_pos].msg[3])) {
cec_msg.cec_power = 0x1;
}
}
}
}
static void cec_device_vendor_id(void)
{
unsigned char msg[5];
msg[0] = ((cec_msg.log_addr & 0xf) << 4)| CEC_BROADCAST_ADDR;
msg[1] = CEC_OC_DEVICE_VENDOR_ID;
msg[2] = 0x00;
msg[3] = 0x00;
msg[4] = 0x00;
remote_cec_ll_tx(msg, 5);
}
static void cec_menu_status_smp(int menu_status, int dst)
{
unsigned char msg[3];
msg[0] = ((cec_msg.log_addr & 0xf) << 4)| (dst & 0xf);
msg[1] = CEC_OC_MENU_STATUS;
msg[2] = menu_status;
remote_cec_ll_tx(msg, 3);
}
static void cec_give_deck_status(int dst)
{
unsigned char msg[3];
msg[0] = ((cec_msg.log_addr & 0xf) << 4) | (dst & 0xf);
msg[1] = CEC_OC_DECK_STATUS;
msg[2] = 0x1a;
remote_cec_ll_tx(msg, 3);
}
/*static void cec_standby(void)
{
unsigned char msg[2];
msg[0] = ((cec_msg.log_addr & 0xf) << 4) | CEC_BROADCAST_ADDR;
msg[1] = CEC_OC_STANDBY;
remote_cec_ll_tx(msg, 2);
}*/
static void cec_set_osd_name(int dst)
{
unsigned char msg[16];
unsigned char osd_len = cec_strlen(CONFIG_CEC_OSD_NAME);
msg[0] = ((cec_msg.log_addr & 0xf) << 4) | (dst & 0xf);
msg[1] = CEC_OC_SET_OSD_NAME;
cec_memcpy(&msg[2], CONFIG_CEC_OSD_NAME, osd_len);
remote_cec_ll_tx(msg, osd_len + 2);
}
static void cec_get_version(int dst)
{
unsigned char dest_log_addr = cec_msg.log_addr & 0xf;
unsigned char msg[3];
if (0xf != dest_log_addr) {
msg[0] = ((cec_msg.log_addr & 0xf) << 4) | (dst & 0xf);
msg[1] = CEC_OC_CEC_VERSION;
msg[2] = CEC_VERSION_14A;
remote_cec_ll_tx(msg, 3);
}
}
static int check_addr(int phy_addr)
{
unsigned int local_addr = (readl(AO_DEBUG_REG1)) & 0xffff;
unsigned int i, mask = 0xf000, a, b;
for (i = 0; i < 4; i++) {
if (!(local_addr & mask)) {
break;
}
a = local_addr & mask;
b = phy_addr & mask;
if (a != b) {// node is not same
cec_dbg_prints("addr fail 1\n");
return 0;
}
mask >>= 4;
}
cec_dbg_prints("addr ok\n");
return 1;
}
static int is_playback_dev(int addr)
{
if (addr != CEC_PLAYBACK_DEVICE_1_ADDR &&
addr != CEC_PLAYBACK_DEVICE_2_ADDR &&
addr != CEC_PLAYBACK_DEVICE_3_ADDR) {
return 0;
}
return 1;
}
static unsigned int cec_handle_message(void)
{
unsigned char opcode;
unsigned char source;
unsigned int phy_addr, wake;
source = (cec_msg.buf[cec_msg.rx_read_pos].msg[0] >> 4) & 0xf;
if (((hdmi_cec_func_config>>CEC_FUNC_MASK) & 0x1) &&
(cec_msg.buf[cec_msg.rx_read_pos].msg_len > 1)) {
opcode = cec_msg.buf[cec_msg.rx_read_pos].msg[1];
switch (opcode) {
case CEC_OC_GET_CEC_VERSION:
cec_get_version(source);
break;
case CEC_OC_GIVE_DECK_STATUS:
cec_give_deck_status(source);
break;
case CEC_OC_GIVE_PHYSICAL_ADDRESS:
cec_report_physical_address();
break;
case CEC_OC_GIVE_DEVICE_VENDOR_ID:
cec_device_vendor_id();
break;
case CEC_OC_GIVE_OSD_NAME:
cec_set_osd_name(source);
break;
case CEC_OC_SET_STREAM_PATH:
cec_set_stream_path();
break;
case CEC_OC_GIVE_DEVICE_POWER_STATUS:
cec_report_device_power_status(source);
break;
case CEC_OC_USER_CONTROL_PRESSED:
if (((hdmi_cec_func_config >> CEC_FUNC_MASK) & 0x1) &&
((hdmi_cec_func_config >> AUTO_POWER_ON_MASK) & 0x1) &&
(cec_msg.buf[cec_msg.rx_read_pos].msg_len == 3) &&
((0x40 == cec_msg.buf[cec_msg.rx_read_pos].msg[2]) ||
(0x6d == cec_msg.buf[cec_msg.rx_read_pos].msg[2]) ||
(0x09 == cec_msg.buf[cec_msg.rx_read_pos].msg[2]) )) {
cec_msg.cec_power = 0x1;
}
break;
case CEC_OC_MENU_REQUEST:
cec_menu_status_smp(DEVICE_MENU_INACTIVE, source);
break;
/* TV Wake up by image/text view on */
case CEC_OC_IMAGE_VIEW_ON:
case CEC_OC_TEXT_VIEW_ON:
if (((hdmi_cec_func_config >> CEC_FUNC_MASK) & 0x1) &&
((hdmi_cec_func_config >> AUTO_POWER_ON_MASK) & 0x1) &&
(!is_playback_dev(cec_msg.log_addr))) {
/* request active source needed */
phy_addr = 0xffff;
cec_msg.cec_power = 0x1;
wake = (phy_addr << 0) |
(source << 16);
writel(wake, AO_RTI_STATUS_REG1);
}
break;
/* TV Wake up by active source*/
case CEC_OC_ACTIVE_SOURCE:
phy_addr = (cec_msg.buf[cec_msg.rx_read_pos].msg[2] << 8) |
(cec_msg.buf[cec_msg.rx_read_pos].msg[3] << 0);
if (((hdmi_cec_func_config >> CEC_FUNC_MASK) & 0x1) &&
((hdmi_cec_func_config >> AUTO_POWER_ON_MASK) & 0x1) &&
(!is_playback_dev(cec_msg.log_addr) && check_addr(phy_addr))) {
cec_msg.cec_power = 0x1;
wake = (phy_addr << 0) |
(source << 16);
writel(wake, AO_RTI_STATUS_REG1);
}
break;
default:
break;
}
}
cec_rx_read_pos_plus();
return 0;
}
static void cec_set_log_addr(int addr)
{
cec_wr_reg(DWC_CECB_LADD_LOW, 0);
cec_wr_reg(DWC_CECB_LADD_HIGH, 0x80);
if (addr > 15)
return ;
if ((cec_msg.log_addr & 0x0f) < 8)
cec_wr_reg(DWC_CECB_LADD_LOW, 1 << addr);
else
cec_wr_reg(DWC_CECB_LADD_HIGH, (1 << (addr - 8)) | 0x80);
_udelay(100);
}
static void cec_reset_addr(void)
{
int addr = cec_msg.log_addr;
remote_cec_hw_reset();
cec_set_log_addr(addr);
}
static unsigned char cec_get_log_addr(void)
{
int i, reg;
reg = cec_rd_reg(DWC_CECB_LADD_LOW);
reg = (cec_rd_reg(DWC_CECB_LADD_HIGH) << 8) | reg;
for (i = 0; i < 16; i++) {
if (reg & (1 << i))
break;
}
if (reg & 0x8000 && i < 16)
return i + 16;
else if (i < 16)
return i;
return 0xff;
}
unsigned int cec_handler(void)
{
unsigned char s_idx;
static int busy_count = 0;
int irq;
dump_cecb_reg();
irq = readl(AO_CECB_INTR_STAT);
writel(irq, AO_CECB_INTR_CLR);
if (irq & CECB_IRQ_RX_EOM) {
remote_cec_ll_rx();
(cec_msg.rx_write_pos == cec_msg.rx_buf_size - 1) ? (cec_msg.rx_write_pos = 0) : (cec_msg.rx_write_pos++);
cec_dbg_prints("RX_OK\n");
}
if (irq & CECB_IRQ_RX_ERR_FOLLOWER) {
cec_dbg_prints("RX_ERROR\n");
cec_wr_reg(DWC_CECB_LOCK_BUF, 0);
}
if (irq & CECB_IRQ_RX_WAKEUP) {
cec_dbg_prints("rx wake up\n");
cec_wr_reg(DWC_CECB_WAKEUPCTRL, 0);
/* TODO: wake up system if needed */
}
if (irq & CECB_IRQ_TX_DONE) {
cec_tx_msgs.send_idx = (cec_tx_msgs.send_idx + 1) & CEC_TX_MSG_BUF_MASK;
s_idx = cec_tx_msgs.send_idx;
if (cec_tx_msgs.send_idx != cec_tx_msgs.queue_idx) {
cec_dbg_prints("TX_OK\n");
cec_triggle_tx(cec_tx_msgs.msg[s_idx].buf,
cec_tx_msgs.msg[s_idx].len);
} else {
cec_dbg_prints("TX_END\n");
}
busy_count = 0;
}
if (irq & CECB_IRQ_TX_NACK) {
cec_dbg_prints("@TX_NACK\n");
s_idx = cec_tx_msgs.send_idx;
if (cec_tx_msgs.msg[s_idx].retry < 5) {
cec_tx_msgs.msg[s_idx].retry++;
cec_triggle_tx(cec_tx_msgs.msg[s_idx].buf,
cec_tx_msgs.msg[s_idx].len);
} else {
cec_dbg_prints("TX retry too much, abort msg\n");
cec_tx_msgs.send_idx = (cec_tx_msgs.send_idx + 1) & CEC_TX_MSG_BUF_MASK;
}
busy_count = 0;
}
if (irq & CECB_IRQ_TX_ERR_INITIATOR) {
cec_dbg_prints("@TX_ERR_INIT\n");
s_idx = cec_tx_msgs.send_idx;
if (cec_tx_msgs.send_idx != cec_tx_msgs.queue_idx) { // triggle tx if idle
cec_triggle_tx(cec_tx_msgs.msg[s_idx].buf,
cec_tx_msgs.msg[s_idx].len);
}
busy_count = 0;
}
if (irq & CECB_IRQ_TX_ARB_LOST) {
busy_count++;
if (busy_count >= 2000) {
uart_puts("busy too long, reset hw\n");
cec_reset_addr();
busy_count = 0;
}
}
if (cec_msg.rx_read_pos != cec_msg.rx_write_pos) {
cec_handle_message();
}
return 0;
}
/*static void check_standby(void)
{
if (((cec_msg.log_addr & 0xf) == 0) &&
((hdmi_cec_func_config >> CEC_FUNC_MASK) & 0x1) &&
((hdmi_cec_func_config >> ONE_TOUCH_STANDBY_MASK) & 0x1)) {
cec_standby();
}
}*/
void cec_node_init(void)
{
static int i = 0;
static unsigned int retry = 0;
static int regist_devs = 0;
static int *probe = NULL;
int tx_stat;
unsigned char msg[1];
unsigned int kern_log_addr = (readl(AO_DEBUG_REG1) >> 16) & 0xf;
int player_dev[3][3] =
{{CEC_PLAYBACK_DEVICE_1_ADDR, CEC_PLAYBACK_DEVICE_2_ADDR, CEC_PLAYBACK_DEVICE_3_ADDR},
{CEC_PLAYBACK_DEVICE_2_ADDR, CEC_PLAYBACK_DEVICE_3_ADDR, CEC_PLAYBACK_DEVICE_1_ADDR},
{CEC_PLAYBACK_DEVICE_3_ADDR, CEC_PLAYBACK_DEVICE_1_ADDR, CEC_PLAYBACK_DEVICE_2_ADDR}};
if (retry >= 12) { // retry all device addr
cec_msg.log_addr = 0x0f;
uart_puts("failed on retried all possible address\n");
return ;
}
writel(0, AO_RTI_STATUS_REG1);
if (probe == NULL) {
cec_msg.rx_read_pos = 0;
cec_msg.rx_write_pos = 0;
cec_msg.rx_buf_size = 2;
cec_msg.power_status = 1;
cec_msg.cec_power = 0;
cec_tx_msgs.send_idx = 0;
cec_tx_msgs.queue_idx = 0;
cec_tx_buf_init();
cec_buf_clear();
_udelay(100);
/*
* use kernel cec logic address to detect which logic address is the
* started one to allocate.
*/
cec_dbg_print("kern log_addr:0x", kern_log_addr);
uart_puts("\n");
/* we don't need probe TV address */
if (!is_playback_dev(kern_log_addr)) {
cec_set_log_addr(kern_log_addr);
msg[0] = (kern_log_addr << 4) | kern_log_addr;
ping_cec_ll_tx(msg, 1);
cec_msg.log_addr = 0x10 | kern_log_addr;
_udelay(100);
cec_dbg_print("Set cec log_addr:0x", cec_msg.log_addr);
cec_dbg_print(",ADDR0:", cec_get_log_addr());
uart_puts("\n");
probe = NULL;
regist_devs = 0;
i = 0;
retry = 0;
/*check_standby();*/
return ;
}
for (i = 0; i < 3; i++) {
if (kern_log_addr == player_dev[i][0]) {
probe = player_dev[i];
break;
}
}
if (probe == NULL) {
probe = player_dev[0];
}
i = 0;
}
cec_set_log_addr(probe[i]);
msg[0] = (probe[i]<<4) | probe[i];
tx_stat = ping_cec_ll_tx(msg, 1);
if (tx_stat == TX_BUSY) { // can't get cec bus
retry++;
remote_cec_hw_reset();
if (!(retry & 0x03)) {
cec_dbg_print("retry too much, log_addr:0x", probe[i]);
uart_puts("\n");
} else {
i -= 1;
}
} else if (tx_stat == TX_ERROR) {
_udelay(100);
cec_msg.log_addr = probe[i];
cec_set_log_addr(cec_msg.log_addr);
cec_dbg_print("Set cec log_addr:0x", cec_msg.log_addr);
cec_dbg_print(", ADDR0:", cec_get_log_addr());
uart_puts("\n");
probe = NULL;
regist_devs = 0;
i = 0;
retry = 0;
dump_cecb_reg();
return ;
} else if (tx_stat == TX_DONE) {
cec_dbg_print("sombody takes cec log_addr:0x", probe[i]);
uart_puts("\n");
regist_devs |= (1 << i);
retry += (4 - (retry & 0x03));
if (regist_devs == 0x07) {
// No avilable logical address
cec_msg.log_addr = 0x0f;
cec_set_log_addr(15);
uart_puts("CEC allocate logic address failed\n");
}
}
i++;
if (i == 3) {
i = 0;
}
}
int cec_power_on_check(void)
{
//if (suspend_from == SYS_POWEROFF)
// continue;
if (hdmi_cec_func_config & 0x1) {
if (cec_msg.log_addr) {
cec_handler();
if (cec_msg.cec_power == 0x1) {
/*cec power key*/
return 1;
}
} else
cec_node_init();
}
return 0;
}
#endif