int s5p_mfc_reset(struct s5p_mfc_dev *dev)
{
unsigned int mc_status;
unsigned long timeout;
mfc_debug_enter();
mfc_write(dev, 0x3f6, S5P_FIMV_SW_RESET);
mfc_write(dev, 0x3e2, S5P_FIMV_SW_RESET);
mdelay(10);
timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
do {
if (time_after(jiffies, timeout)) {
mfc_err("Timeout while resetting MFC\n");
return -EIO;
}
mc_status = mfc_read(dev, S5P_FIMV_MC_STATUS);
} while (mc_status & 0x3);
mfc_write(dev, 0x0, S5P_FIMV_SW_RESET);
mfc_write(dev, 0x3fe, S5P_FIMV_SW_RESET);
mfc_debug_leave();
return 0;
}
static void s5p_mfc_mem_req_enable_v6(struct s5p_mfc_dev *dev)
{
unsigned int bus_reset_ctrl;
if (dev->risc_on) {
bus_reset_ctrl = mfc_read(dev, S5P_FIMV_MFC_BUS_RESET_CTRL);
bus_reset_ctrl &= S5P_FIMV_MFC_BUS_RESET_CTRL_MASK;
mfc_write(dev, bus_reset_ctrl, S5P_FIMV_MFC_BUS_RESET_CTRL);
}
}
/* Reset the device */
int s5p_mfc_reset(struct s5p_mfc_dev *dev)
{
unsigned int mc_status;
unsigned long timeout;
int i;
mfc_debug_enter();
if (IS_MFCV6_PLUS(dev)) {
/* Zero Initialization of MFC registers */
mfc_write(dev, 0, S5P_FIMV_RISC2HOST_CMD_V6);
mfc_write(dev, 0, S5P_FIMV_HOST2RISC_CMD_V6);
mfc_write(dev, 0, S5P_FIMV_FW_VERSION_V6);
for (i = 0; i < S5P_FIMV_REG_CLEAR_COUNT_V6; i++)
mfc_write(dev, 0, S5P_FIMV_REG_CLEAR_BEGIN_V6 + (i*4));
/* check bus reset control before reset */
if (dev->risc_on)
if (s5p_mfc_bus_reset(dev))
return -EIO;
/* Reset
* set RISC_ON to 0 during power_on & wake_up.
* V6 needs RISC_ON set to 0 during reset also.
*/
if ((!dev->risc_on) || (!IS_MFCV7_PLUS(dev)))
mfc_write(dev, 0, S5P_FIMV_RISC_ON_V6);
mfc_write(dev, 0x1FFF, S5P_FIMV_MFC_RESET_V6);
mfc_write(dev, 0, S5P_FIMV_MFC_RESET_V6);
} else {
/* Stop procedure */
/* reset RISC */
mfc_write(dev, 0x3f6, S5P_FIMV_SW_RESET);
/* All reset except for MC */
mfc_write(dev, 0x3e2, S5P_FIMV_SW_RESET);
mdelay(10);
timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
/* Check MC status */
do {
if (time_after(jiffies, timeout)) {
mfc_err("Timeout while resetting MFC\n");
return -EIO;
}
mc_status = mfc_read(dev, S5P_FIMV_MC_STATUS);
} while (mc_status & 0x3);
mfc_write(dev, 0x0, S5P_FIMV_SW_RESET);
mfc_write(dev, 0x3fe, S5P_FIMV_SW_RESET);
}
mfc_debug_leave();
return 0;
}
/* Reset the device */
int s5p_mfc_reset(struct s5p_mfc_dev *dev)
{
unsigned int mc_status;
unsigned long timeout;
int i;
mfc_debug_enter();
if (IS_MFCV6_PLUS(dev)) {
/* Reset IP */
/* except RISC, reset */
mfc_write(dev, 0xFEE, S5P_FIMV_MFC_RESET_V6);
/* reset release */
mfc_write(dev, 0x0, S5P_FIMV_MFC_RESET_V6);
/* Zero Initialization of MFC registers */
mfc_write(dev, 0, S5P_FIMV_RISC2HOST_CMD_V6);
mfc_write(dev, 0, S5P_FIMV_HOST2RISC_CMD_V6);
mfc_write(dev, 0, S5P_FIMV_FW_VERSION_V6);
for (i = 0; i < S5P_FIMV_REG_CLEAR_COUNT_V6; i++)
mfc_write(dev, 0, S5P_FIMV_REG_CLEAR_BEGIN_V6 + (i*4));
/* Reset */
mfc_write(dev, 0, S5P_FIMV_RISC_ON_V6);
mfc_write(dev, 0x1FFF, S5P_FIMV_MFC_RESET_V6);
mfc_write(dev, 0, S5P_FIMV_MFC_RESET_V6);
} else {
/* Stop procedure */
/* reset RISC */
mfc_write(dev, 0x3f6, S5P_FIMV_SW_RESET);
/* All reset except for MC */
mfc_write(dev, 0x3e2, S5P_FIMV_SW_RESET);
mdelay(10);
timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
/* Check MC status */
do {
if (time_after(jiffies, timeout)) {
mfc_err("Timeout while resetting MFC\n");
return -EIO;
}
mc_status = mfc_read(dev, S5P_FIMV_MC_STATUS);
} while (mc_status & 0x3);
mfc_write(dev, 0x0, S5P_FIMV_SW_RESET);
mfc_write(dev, 0x3fe, S5P_FIMV_SW_RESET);
}
mfc_debug_leave();
return 0;
}
static int s5p_mfc_bus_reset(struct s5p_mfc_dev *dev)
{
unsigned int status;
unsigned long timeout;
/* Reset */
mfc_write(dev, 0x1, S5P_FIMV_MFC_BUS_RESET_CTRL);
timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
/* Check bus status */
do {
if (time_after(jiffies, timeout)) {
mfc_err("Timeout while resetting MFC.\n");
return -EIO;
}
status = mfc_read(dev, S5P_FIMV_MFC_BUS_RESET_CTRL);
} while ((status & 0x2) == 0);
return 0;
}
/* Initialize MFC V6 hardware */
static int s5p_mfc_init_hw_v6(struct s5p_mfc_dev *dev)
{
unsigned int ver;
int ret;
mfc_debug_enter();
ret = s5p_mfc_load_firmware(dev);
if (ret) {
mfc_err("Failed to reload FW\n");
return ret;
}
/* 0. MFC reset */
mfc_debug(2, "MFC reset..\n");
WARN_ON(dev->risc_on);
s5p_mfc_clock_on(dev);
ret = s5p_mfc_ctrl_ops_call(dev, reset, dev);
if (ret) {
mfc_err("Failed to reset MFC - timeout\n");
s5p_mfc_clock_off(dev);
return ret;
}
mfc_debug(2, "Done MFC reset..\n");
/* 1. Set DRAM base Addr */
s5p_mfc_init_memctrl_v6(dev);
/* 2. Release reset signal to the RISC */
s5p_mfc_clean_dev_int_flags(dev);
mfc_write(dev, 0x1, S5P_FIMV_RISC_ON_V6);
ret = s5p_mfc_init_fw(dev);
if (ret) {
s5p_mfc_clock_off(dev);
return ret;
}
ver = mfc_read(dev, S5P_FIMV_FW_VERSION_V6);
mfc_debug(2, "MFC F/W version : %02xyy, %02xmm, %02xdd\n",
(ver >> 16) & 0xFF, (ver >> 8) & 0xFF, ver & 0xFF);
s5p_mfc_clock_off(dev);
dev->risc_on = 1;
mfc_debug_leave();
return ret;
}
/* This function is used to send a command to the MFC */
static int s5p_mfc_cmd_host2risc_v5(struct s5p_mfc_dev *dev, int cmd,
struct s5p_mfc_cmd_args *args)
{
int cur_cmd;
unsigned long timeout;
timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
/* wait until host to risc command register becomes 'H2R_CMD_EMPTY' */
do {
if (time_after(jiffies, timeout)) {
mfc_err("Timeout while waiting for hardware\n");
return -EIO;
}
cur_cmd = mfc_read(dev, S5P_FIMV_HOST2RISC_CMD);
} while (cur_cmd != S5P_FIMV_H2R_CMD_EMPTY);
mfc_write(dev, args->arg[0], S5P_FIMV_HOST2RISC_ARG1);
mfc_write(dev, args->arg[1], S5P_FIMV_HOST2RISC_ARG2);
mfc_write(dev, args->arg[2], S5P_FIMV_HOST2RISC_ARG3);
mfc_write(dev, args->arg[3], S5P_FIMV_HOST2RISC_ARG4);
/* Issue the command */
mfc_write(dev, cmd, S5P_FIMV_HOST2RISC_CMD);
return 0;
}
int s5p_mfc_init_hw(struct s5p_mfc_dev *dev)
{
unsigned int ver;
int ret;
mfc_debug_enter();
if (!s5p_mfc_bitproc_buf)
return -EINVAL;
mfc_debug(2, "MFC reset..\n");
s5p_mfc_clock_on();
ret = s5p_mfc_reset(dev);
if (ret) {
mfc_err("Failed to reset MFC - timeout\n");
return ret;
}
mfc_debug(2, "Done MFC reset..\n");
s5p_mfc_init_memctrl(dev);
s5p_mfc_clear_cmds(dev);
s5p_mfc_clean_dev_int_flags(dev);
mfc_write(dev, 0x3ff, S5P_FIMV_SW_RESET);
mfc_debug(2, "Will now wait for completion of firmware transfer\n");
if (s5p_mfc_wait_for_done_dev(dev, S5P_FIMV_R2H_CMD_FW_STATUS_RET)) {
mfc_err("Failed to load firmware\n");
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return -EIO;
}
s5p_mfc_clean_dev_int_flags(dev);
ret = s5p_mfc_sys_init_cmd(dev);
if (ret) {
mfc_err("Failed to send command to MFC - timeout\n");
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return ret;
}
mfc_debug(2, "Ok, now will write a command to init the system\n");
if (s5p_mfc_wait_for_done_dev(dev, S5P_FIMV_R2H_CMD_SYS_INIT_RET)) {
mfc_err("Failed to load firmware\n");
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return -EIO;
}
dev->int_cond = 0;
if (dev->int_err != 0 || dev->int_type !=
S5P_FIMV_R2H_CMD_SYS_INIT_RET) {
mfc_err("Failed to init firmware - error: %d int: %d\n",
dev->int_err, dev->int_type);
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return -EIO;
}
ver = mfc_read(dev, S5P_FIMV_FW_VERSION);
mfc_debug(2, "MFC F/W version : %02xyy, %02xmm, %02xdd\n",
(ver >> 16) & 0xFF, (ver >> 8) & 0xFF, ver & 0xFF);
s5p_mfc_clock_off();
mfc_debug_leave();
return 0;
}
/* Initialize hardware */
int s5p_mfc_init_hw(struct s5p_mfc_dev *dev)
{
unsigned int ver;
int ret;
mfc_debug_enter();
if (!dev->fw_virt_addr) {
mfc_err("Firmware memory is not allocated.\n");
return -EINVAL;
}
/* 0. MFC reset */
mfc_debug(2, "MFC reset..\n");
s5p_mfc_clock_on();
ret = s5p_mfc_reset(dev);
if (ret) {
mfc_err("Failed to reset MFC - timeout\n");
return ret;
}
mfc_debug(2, "Done MFC reset..\n");
/* 1. Set DRAM base Addr */
s5p_mfc_init_memctrl(dev);
/* 2. Initialize registers of channel I/F */
s5p_mfc_clear_cmds(dev);
/* 3. Release reset signal to the RISC */
s5p_mfc_clean_dev_int_flags(dev);
if (IS_MFCV6_PLUS(dev))
mfc_write(dev, 0x1, S5P_FIMV_RISC_ON_V6);
else
mfc_write(dev, 0x3ff, S5P_FIMV_SW_RESET);
mfc_debug(2, "Will now wait for completion of firmware transfer\n");
if (s5p_mfc_wait_for_done_dev(dev, S5P_MFC_R2H_CMD_FW_STATUS_RET)) {
mfc_err("Failed to load firmware\n");
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return -EIO;
}
s5p_mfc_clean_dev_int_flags(dev);
/* 4. Initialize firmware */
ret = s5p_mfc_hw_call(dev->mfc_cmds, sys_init_cmd, dev);
if (ret) {
mfc_err("Failed to send command to MFC - timeout\n");
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return ret;
}
mfc_debug(2, "Ok, now will wait for completion of hardware init\n");
if (s5p_mfc_wait_for_done_dev(dev, S5P_MFC_R2H_CMD_SYS_INIT_RET)) {
mfc_err("Failed to init hardware\n");
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return -EIO;
}
dev->int_cond = 0;
if (dev->int_err != 0 || dev->int_type !=
S5P_MFC_R2H_CMD_SYS_INIT_RET) {
/* Failure. */
mfc_err("Failed to init firmware - error: %d int: %d\n",
dev->int_err, dev->int_type);
s5p_mfc_reset(dev);
s5p_mfc_clock_off();
return -EIO;
}
if (IS_MFCV6_PLUS(dev))
ver = mfc_read(dev, S5P_FIMV_FW_VERSION_V6);
else
ver = mfc_read(dev, S5P_FIMV_FW_VERSION);
mfc_debug(2, "MFC F/W version : %02xyy, %02xmm, %02xdd\n",
(ver >> 16) & 0xFF, (ver >> 8) & 0xFF, ver & 0xFF);
s5p_mfc_clock_off();
mfc_debug_leave();
return 0;
}