static int __init hsi_platform_device_probe(struct platform_device *pd)
{
struct hsi_platform_data *pdata = dev_get_platdata(&pd->dev);
struct hsi_dev *hsi_ctrl;
u32 revision;
int err;
dev_dbg(&pd->dev, "HSI DRIVER : hsi_platform_device_probe\n");
dev_dbg(&pd->dev, "The platform device probed is an %s\n",
hsi_driver_device_is_hsi(pd) ? "HSI" : "SSI");
if (!pdata) {
dev_err(&pd->dev, "No platform_data found on hsi device\n");
return -ENXIO;
}
/* Check if mandatory board functions are populated */
if (!pdata->device_scale) {
dev_err(&pd->dev, "Missing platform device_scale function\n");
return -ENOSYS;
}
hsi_ctrl = kzalloc(sizeof(*hsi_ctrl), GFP_KERNEL);
if (hsi_ctrl == NULL) {
dev_err(&pd->dev, "Could not allocate memory for"
" struct hsi_dev\n");
return -ENOMEM;
}
//mo2haewoon.you => [START]
#if defined (HSI_SEND_ATCOMMAND_TO_CAWAKE)
INIT_WORK(&hsi_ctrl->ifx_work,ifx_check_handle_work);
hsi_ctrl->ifx_wq = create_singlethread_workqueue("ifx_wq");
if(!hsi_ctrl->ifx_wq){
printk("Failed to setup workqueue - ifx_wq \n");
}
#endif
//mo2haewoon.you => [END]
platform_set_drvdata(pd, hsi_ctrl);
err = hsi_controller_init(hsi_ctrl, pd);
if (err < 0) {
dev_err(&pd->dev, "Could not initialize hsi controller:"
" %d\n", err);
goto rollback1;
}
pm_runtime_enable(hsi_ctrl->dev);
pm_runtime_irq_safe(hsi_ctrl->dev);
hsi_clocks_enable(hsi_ctrl->dev, __func__);
/* Non critical SW Reset */
err = hsi_softreset(hsi_ctrl);
if (err < 0)
goto rollback2;
hsi_set_pm_force_hsi_on(hsi_ctrl);
/* Configure HSI ports */
hsi_set_ports_default(hsi_ctrl, pd);
/* Gather info from registers for the driver.(REVISION) */
revision = hsi_inl(hsi_ctrl->base, HSI_SYS_REVISION_REG);
if (hsi_driver_device_is_hsi(pd))
dev_info(hsi_ctrl->dev, "HSI Hardware REVISION 0x%x\n",
revision);
else
dev_info(hsi_ctrl->dev, "SSI Hardware REVISION %d.%d\n",
(revision & HSI_SSI_REV_MAJOR) >> 4,
(revision & HSI_SSI_REV_MINOR));
err = hsi_debug_add_ctrl(hsi_ctrl);
if (err < 0) {
dev_err(&pd->dev,
"Could not add hsi controller to debugfs: %d\n", err);
goto rollback2;
}
err = register_hsi_devices(hsi_ctrl);
if (err < 0) {
dev_err(&pd->dev, "Could not register hsi_devices: %d\n", err);
goto rollback3;
}
//mo2haewoon.you => [START]
#if defined (HSI_SEND_ATCOMMAND_TO_CAWAKE)
/* Set the ts_gpio pin mux */
err = gpio_request(OMAP_SEND, "gpio_122");
gpio_direction_input(OMAP_SEND);
irq_num_122 = gpio_to_irq(OMAP_SEND);
err = request_irq(irq_num_122,ifx_check_handle_srdy_irq, IRQF_TRIGGER_RISING,HSI_MODULENAME, hsi_ctrl);
if (err < 0) {
pr_err("Modem-wait-check: couldn't request gpio interrupt 122\n");
}
#endif
//mo2haewoon.you => [END]
/* Allow HSI to wake up the platform */
device_init_wakeup(hsi_ctrl->dev, true);
/* Set the HSI FCLK to default. */
hsi_ctrl->hsi_fclk_req = pdata->default_hsi_fclk;
err = pdata->device_scale(hsi_ctrl->dev, hsi_ctrl->dev,
pdata->default_hsi_fclk);
if (err == -EBUSY) {
/* PM framework init is late_initcall, so it may not yet be */
/* initialized, so be prepared to retry later on open. */
dev_warn(&pd->dev, "Cannot set HSI FClk to default value: %ld. "
"Will retry on next open\n", pdata->default_hsi_fclk);
} else if (err) {
dev_err(&pd->dev, "%s: Error %d setting HSI FClk to %ld.\n",
__func__, err, pdata->default_hsi_fclk);
goto rollback3;
} else {
hsi_ctrl->hsi_fclk_current = pdata->default_hsi_fclk;
}
/* From here no need for HSI HW access */
hsi_clocks_disable(hsi_ctrl->dev, __func__);
// LGE_CHANGE [MIPI-HSI] [email protected] [START]
#if defined(CONFIG_MACH_LGE_COSMOPOLITAN)
/* Set IMC CP core dump */
IFX_CP_CRASH_DUMP_INIT();
#endif
#if defined(CONFIG_MACH_LGE_COSMO)
/* Notify active/sleep status of AP to CP*/
ifx_init_modem_send();
#endif
// LGE_CHANGE [MIPI-HSI] [email protected] [END]
return 0;
rollback3:
hsi_debug_remove_ctrl(hsi_ctrl);
rollback2:
hsi_controller_exit(hsi_ctrl);
/* From here no need for HSI HW access */
hsi_clocks_disable(hsi_ctrl->dev, __func__);
rollback1:
kfree(hsi_ctrl);
return err;
}
/* HSI Platform Device probing & hsi_device registration */
static int __init hsi_platform_device_probe(struct platform_device *pd)
{
struct hsi_platform_data *pdata = dev_get_platdata(&pd->dev);
struct hsi_dev *hsi_ctrl;
u32 revision;
int err;
dev_dbg(&pd->dev, "HSI DRIVER : hsi_platform_device_probe\n");
dev_dbg(&pd->dev, "The platform device probed is an %s\n",
hsi_driver_device_is_hsi(pd) ? "HSI" : "SSI");
if (!pdata) {
dev_err(&pd->dev, "No platform_data found on hsi device\n");
return -ENXIO;
}
if (!pdata->device_enable || !pdata->device_idle ||
!pdata->device_set_rate || !pdata->wakeup_enable ||
!pdata->wakeup_disable || !pdata->wakeup_is_from_hsi ||
!pdata->board_suspend) {
dev_err(&pd->dev, "Missing platform function pointers\n");
return -EINVAL;
}
hsi_ctrl = kzalloc(sizeof(*hsi_ctrl), GFP_KERNEL);
if (hsi_ctrl == NULL) {
dev_err(&pd->dev, "Could not allocate memory for"
" struct hsi_dev\n");
return -ENOMEM;
}
platform_set_drvdata(pd, hsi_ctrl);
err = hsi_controller_init(hsi_ctrl, pd);
if (err < 0) {
dev_err(&pd->dev, "Could not initialize hsi controller:"
" %d\n", err);
goto rollback1;
}
#ifdef USE_PM_RUNTIME_FOR_HSI
pm_runtime_enable(hsi_ctrl->dev);
#endif
err = hsi_clocks_enable(hsi_ctrl->dev, __func__);
if (err < 0) {
dev_err(&pd->dev, "Could not enable clocks for hsi: %d\n", err);
goto rollback1;
}
/* Non critical SW Reset */
err = hsi_softreset(hsi_ctrl);
if (err < 0)
goto rollback2;
hsi_set_pm_force_hsi_on(hsi_ctrl);
/* Configure HSI ports */
hsi_set_ports_default(hsi_ctrl, pd);
/* Gather info from registers for the driver.(REVISION) */
revision = hsi_inl(hsi_ctrl->base, HSI_SYS_REVISION_REG);
if (hsi_driver_device_is_hsi(pd))
dev_info(hsi_ctrl->dev, "HSI Hardware REVISION 0x%x\n",
revision);
else
dev_info(hsi_ctrl->dev, "SSI Hardware REVISION %d.%d\n",
(revision & HSI_SSI_REV_MAJOR) >> 4,
(revision & HSI_SSI_REV_MINOR));
err = hsi_debug_add_ctrl(hsi_ctrl);
if (err < 0) {
dev_err(&pd->dev,
"Could not add hsi controller to debugfs: %d\n", err);
goto rollback2;
}
err = register_hsi_devices(hsi_ctrl);
if (err < 0) {
dev_err(&pd->dev, "Could not register hsi_devices: %d\n", err);
goto rollback3;
}
/* Allow HSI to wake up the platform */
device_init_wakeup(hsi_ctrl->dev, true);
/* Set the HSI FCLK to default. */
err = pdata->device_set_rate(hsi_ctrl->dev, hsi_ctrl->dev,
pdata->default_hsi_fclk);
if (err)
dev_err(&pd->dev, "Cannot set HSI FClk to default value: %ld\n",
pdata->default_hsi_fclk);
/* From here no need for HSI HW access */
hsi_clocks_disable(hsi_ctrl->dev, __func__);
#if defined(CONFIG_MACH_LGE_COSMOPOLITAN)
/* Set IMC CP core dump */
IFX_CP_CRASH_DUMP_INIT();
/* Notify active/sleep status of AP to CP*/
ifx_init_modem_send();
#endif
#if defined(HSI_GPIO_CAWKAE_NOTIFY_ENABLE)
ifx_init_gpio_cawake_notify(hsi_ctrl);
#endif
return err;
rollback3:
hsi_debug_remove_ctrl(hsi_ctrl);
rollback2:
hsi_controller_exit(hsi_ctrl);
/* From here no need for HSI HW access */
hsi_clocks_disable(hsi_ctrl->dev, __func__);
rollback1:
kfree(hsi_ctrl);
return err;
}