int do_setup_ddr(struct device *dev)
{
struct psh_ia_priv *ia_data =
(struct psh_ia_priv *)dev_get_drvdata(dev);
struct psh_plt_priv *plt_priv =
(struct psh_plt_priv *)ia_data->platform_priv;
uintptr_t ddr_phy = plt_priv->ddr_phy;
uintptr_t imr2_phy = plt_priv->imr2_phy;
const struct firmware *fw_entry;
struct ia_cmd cmd_user = {
.cmd_id = CMD_SETUP_DDR,
.sensor_id = 0,
};
static int fw_load_done;
int load_default = 0;
char fname[40];
if (fw_load_done)
return 0;
#ifdef VPROG2_SENSOR
intel_scu_ipc_msic_vprog2(1);
msleep(500);
#endif
again:
if (!request_firmware(&fw_entry, fname, dev)) {
if (!fw_entry)
return -ENOMEM;
psh_debug("psh fw size %d virt:0x%p\n",
(int)fw_entry->size, fw_entry->data);
if (fw_entry->size > APP_IMR_SIZE) {
psh_err("psh fw size too big\n");
} else {
struct ia_cmd cmd = {
.cmd_id = CMD_RESET,
.sensor_id = 0,
};
memcpy(plt_priv->imr2, fw_entry->data,
fw_entry->size);
*(uintptr_t *)(&cmd.param) = imr2_phy;
cmd.tran_id = 0x1;
if (process_send_cmd(ia_data, PSH2IA_CHANNEL3, &cmd, 7))
return -1;
ia_data->load_in_progress = 1;
wait_for_completion_timeout(&ia_data->cmd_load_comp,
3 * HZ);
fw_load_done = 1;
}
release_firmware(fw_entry);
} else {
psh_err("cannot find psh firmware(%s)\n", fname);
if (!load_default) {
psh_err("try to load default psh.bin\n");
snprintf(fname, 20, "psh.bin");
load_default = 1;
goto again;
}
}
ia_lbuf_read_reset(ia_data->lbuf);
*(unsigned long *)(&cmd_user.param) = ddr_phy;
return ia_send_cmd(ia_data, &cmd_user, 7);
}
static void psh2ia_channel_handle(u32 msg, u32 param, void *data)
{
struct pci_dev *pdev = (struct pci_dev *)data;
struct psh_ia_priv *ia_data =
(struct psh_ia_priv *)dev_get_drvdata(&pdev->dev);
struct psh_plt_priv *plt_priv =
(struct psh_plt_priv *)ia_data->platform_priv;
u8 *dbuf = NULL;
u16 size = 0;
if (unlikely(ia_data->load_in_progress)) {
ia_data->load_in_progress = 0;
complete(&ia_data->cmd_load_comp);
return;
}
while (!ia_lbuf_read_next(ia_data,
&plt_priv->lbuf, &dbuf, &size)) {
ia_handle_frame(ia_data, dbuf, size);
}
sysfs_notify(&pdev->dev.kobj, NULL, "data_size");
}
static int psh_imr_init(struct pci_dev *pdev,
int imr_src, uintptr_t *phy_addr, void **virt_addr,
unsigned size, int bar)
{
struct page *pg;
void __iomem *mem;
int ret = 0;
unsigned long start = 0, len;
if (imr_src == imr_allocate) {
/* dynamic alloct memory region */
pg = alloc_pages(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO,
get_order(size));
if (!pg) {
dev_err(&pdev->dev, "can not allocate app page imr buffer\n");
ret = -ENOMEM;
goto err;
}
*phy_addr = page_to_phys(pg);
*virt_addr = page_address(pg);
} else if (imr_src == imr_pci_shim) {
/* dedicate isolated memory region */
start = pci_resource_start(pdev, bar);
len = pci_resource_len(pdev, bar);
if (!start || !len) {
dev_err(&pdev->dev, "bar %d address not set\n", bar);
ret = -EINVAL;
goto err;
}
ret = pci_request_region(pdev, bar, "psh");
if (ret) {
dev_err(&pdev->dev, "failed to request psh region "
"0x%lx-0x%lx\n", start,
(unsigned long)pci_resource_end(pdev, bar));
goto err;
}
mem = ioremap_nocache(start, len);
if (!mem) {
dev_err(&pdev->dev, "can not ioremap app imr address\n");
ret = -EINVAL;
goto err_ioremap;
}
*phy_addr = start;
*virt_addr = (void *)mem;
} else {
dev_err(&pdev->dev, "Invalid chip imr source\n");
ret = -EINVAL;
goto err;
}
return 0;
err_ioremap:
pci_release_region(pdev, bar);
err:
return ret;
}
static void psh_imr_free(int imr_src, void *virt_addr, unsigned size)
{
if (imr_src == imr_allocate)
__free_pages(virt_to_page(virt_addr), get_order(size));
else if (imr_src == imr_pci_shim)
iounmap((void __iomem *)virt_addr);
}
static int psh_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
int ret = -1;
struct psh_ia_priv *ia_data;
struct psh_plt_priv *plt_priv;
ret = pci_enable_device(pdev);
if (ret) {
dev_err(&pdev->dev, "fail to enable psh pci device\n");
goto pci_err;
}
plt_priv = kzalloc(sizeof(*plt_priv), GFP_KERNEL);
if (!plt_priv) {
dev_err(&pdev->dev, "can not allocate plt_priv\n");
goto plt_err;
}
switch (intel_mid_identify_cpu()) {
case INTEL_MID_CPU_CHIP_TANGIER:
if (intel_mid_soc_stepping() == 0)
plt_priv->imr_src = imr_allocate;
else
plt_priv->imr_src = imr_pci_shim;
break;
case INTEL_MID_CPU_CHIP_ANNIEDALE:
plt_priv->imr_src = imr_pci_shim;
break;
default:
dev_err(&pdev->dev, "error memory region\n");
goto psh_imr2_err;
break;
}
/* init IMR2 */
ret = psh_imr_init(pdev, plt_priv->imr_src,
&plt_priv->imr2_phy, &plt_priv->imr2,
APP_IMR_SIZE, 0);
if (ret)
goto psh_imr2_err;
/* init IMR3 */
ret = psh_imr_init(pdev, plt_priv->imr_src,
&plt_priv->ddr_phy, &plt_priv->ddr,
BUF_IA_DDR_SIZE, 1);
if (ret)
goto psh_ddr_err;
ret = psh_ia_common_init(&pdev->dev, &ia_data);
if (ret) {
dev_err(&pdev->dev, "fail to init psh_ia_common\n");
goto psh_ia_err;
}
ia_lbuf_read_init(&plt_priv->lbuf,
plt_priv->ddr,
BUF_IA_DDR_SIZE, NULL);
ia_data->lbuf = &plt_priv->lbuf;
plt_priv->hwmon_dev = hwmon_device_register(&pdev->dev);
if (!plt_priv->hwmon_dev) {
dev_err(&pdev->dev, "fail to register hwmon device\n");
goto hwmon_err;
}
ia_data->platform_priv = plt_priv;
ret = intel_psh_ipc_bind(PSH_RECV_CH0, psh2ia_channel_handle, pdev);
if (ret) {
dev_err(&pdev->dev, "fail to bind channel\n");
goto irq_err;
}
/* just put this dev into suspend status always, since this is fake */
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_allow(&pdev->dev);
return 0;
irq_err:
hwmon_device_unregister(plt_priv->hwmon_dev);
hwmon_err:
psh_ia_common_deinit(&pdev->dev);
psh_ia_err:
psh_imr_free(plt_priv->imr_src, plt_priv->ddr, BUF_IA_DDR_SIZE);
psh_ddr_err:
psh_imr_free(plt_priv->imr_src, plt_priv->imr2, APP_IMR_SIZE);
psh_imr2_err:
kfree(plt_priv);
plt_err:
pci_dev_put(pdev);
pci_err:
return ret;
}
static int mcu_platform_probe(struct platform_device *pdev)
{
int ret, i;
struct mcu_data *data;
struct mcu *mcu;
u8 *base;
mcu = platform_get_drvdata(pdev);
intel_mcu_tty_driver = alloc_tty_driver(INTEL_MCU_TTY_MINORS);
if (!intel_mcu_tty_driver) {
dev_err(&pdev->dev, "fail to alloc tty driver\n");
return -ENODEV;
}
intel_mcu_tty_driver->name = "ttymcu";
intel_mcu_tty_driver->major = INTEL_MCU_TTY_MAJOR;
intel_mcu_tty_driver->minor_start = 0;
intel_mcu_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
intel_mcu_tty_driver->subtype = SERIAL_TYPE_NORMAL;
intel_mcu_tty_driver->flags = TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV;
intel_mcu_tty_driver->init_termios = tty_std_termios;
intel_mcu_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
HUPCL | CLOCAL;
intel_mcu_tty_driver->init_termios.c_ispeed = 38400;
intel_mcu_tty_driver->init_termios.c_ospeed = 38400;
intel_mcu_tty_driver->init_termios.c_iflag = 0;
intel_mcu_tty_driver->init_termios.c_oflag = 0;
intel_mcu_tty_driver->init_termios.c_lflag = 0;
tty_set_operations(intel_mcu_tty_driver, &intel_mcu_ops);
ret = tty_register_driver(intel_mcu_tty_driver);
if (ret) {
dev_err(&pdev->dev, "fail to register tty driver\n");
goto tty_reg_fail;
}
base = (u8 *)mcu->ddr[1];
for (i = INTEL_MCU_TTY_MINORS - 1; i >= 0; i--) {
data = kzalloc(sizeof(struct mcu_data), GFP_KERNEL);
if (data == NULL) {
dev_err(&pdev->dev, "fail to alloc mcu data\n");
goto data_alloc_fail;
}
data->index = i;
tty_port_init(&data->port);
data->dev = tty_port_register_device(&data->port,
intel_mcu_tty_driver, i, &pdev->dev);
mcu_table[i] = data;
data->mcu = mcu;
init_completion(&data->cmp);
data->lbuf.addr = base;
data->lbuf.length = BUF_IA_DDR_SIZE;
lbuf_read_reset(&data->lbuf);
base += BUF_IA_DDR_SIZE;
}
ret = sysfs_create_group(&pdev->dev.kobj,
&intel_mcu_tty_attribute_group);
if (ret) {
pr_err("failed to create the mdbg sysfs attributes\n");
sysfs_remove_group(&pdev->dev.kobj,
&intel_mcu_tty_attribute_group);
goto data_alloc_fail;
}
intel_psh_ipc_bind(PSH_RECV_CH0, raw_data_handler, mcu_table[0]);
intel_psh_ipc_bind(PSH_RECV_CH1, raw_data_handler, mcu_table[1]);
intel_psh_ipc_bind(PSH_RECV_CH2, cmd_handler, mcu_table[2]);
pr_info("MCU detected and ready to used!\n");
return 0;
data_alloc_fail:
for (i = 0; i < INTEL_MCU_TTY_MINORS; i++)
kfree(mcu_table[i]);
tty_reg_fail:
put_tty_driver(intel_mcu_tty_driver);
return ret;
}
