/**
* omap_device_build_ss - build and register an omap_device with multiple hwmods
* @pdev_name: name of the platform_device driver to use
* @pdev_id: this platform_device's connection ID
* @oh: ptr to the single omap_hwmod that backs this omap_device
* @pdata: platform_data ptr to associate with the platform_device
* @pdata_len: amount of memory pointed to by @pdata
* @pm_lats: pointer to a omap_device_pm_latency array for this device
* @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
* @is_early_device: should the device be registered as an early device or not
*
* Convenience function for building and registering an omap_device
* subsystem record. Subsystem records consist of multiple
* omap_hwmods. This function in turn builds and registers a
* platform_device record. Returns an ERR_PTR() on error, or passes
* along the return value of omap_device_register().
*/
struct platform_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
struct omap_hwmod **ohs, int oh_cnt,
void *pdata, int pdata_len,
struct omap_device_pm_latency *pm_lats,
int pm_lats_cnt, int is_early_device)
{
int ret = -ENOMEM;
struct platform_device *pdev;
struct omap_device *od;
pr_debug("omap_device_build_ss: %s\n", pdev_name);
if (!ohs || oh_cnt == 0 || !pdev_name)
return ERR_PTR(-EINVAL);
if (!pdata && pdata_len > 0)
return ERR_PTR(-EINVAL);
pdev = platform_device_alloc(pdev_name, pdev_id);
if (!pdev) {
ret = -ENOMEM;
goto odbs_exit;
}
/* Set the dev_name early to allow dev_xxx in omap_device_alloc */
if (pdev->id != -1)
dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
else
dev_set_name(&pdev->dev, "%s", pdev->name);
od = omap_device_alloc(pdev, ohs, oh_cnt, pm_lats, pm_lats_cnt);
if (!od)
goto odbs_exit1;
ret = platform_device_add_data(pdev, pdata, pdata_len);
if (ret)
goto odbs_exit2;
if (is_early_device)
ret = omap_early_device_register(pdev);
else
ret = omap_device_register(pdev);
if (ret)
goto odbs_exit2;
return pdev;
odbs_exit2:
omap_device_delete(od);
odbs_exit1:
platform_device_put(pdev);
odbs_exit:
pr_err("omap_device: %s: build failed (%d)\n", pdev_name, ret);
return ERR_PTR(ret);
}
static int _omap_device_notifier_call(struct notifier_block *nb,
unsigned long event, void *dev)
{
struct platform_device *pdev = to_platform_device(dev);
switch (event) {
case BUS_NOTIFY_ADD_DEVICE:
if (pdev->dev.of_node)
omap_device_build_from_dt(pdev);
break;
case BUS_NOTIFY_DEL_DEVICE:
if (pdev->archdata.od)
omap_device_delete(pdev->archdata.od);
break;
}
return NOTIFY_DONE;
}
static int _omap_device_notifier_call(struct notifier_block *nb,
unsigned long event, void *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct omap_device *od;
int err;
switch (event) {
case BUS_NOTIFY_REMOVED_DEVICE:
if (pdev->archdata.od)
omap_device_delete(pdev->archdata.od);
break;
case BUS_NOTIFY_UNBOUND_DRIVER:
od = to_omap_device(pdev);
if (od && (od->_state == OMAP_DEVICE_STATE_ENABLED)) {
dev_info(dev, "enabled after unload, idling\n");
err = omap_device_idle(pdev);
if (err)
dev_err(dev, "failed to idle\n");
}
break;
case BUS_NOTIFY_BIND_DRIVER:
od = to_omap_device(pdev);
if (od && (od->_state == OMAP_DEVICE_STATE_ENABLED) &&
pm_runtime_status_suspended(dev)) {
od->_driver_status = BUS_NOTIFY_BIND_DRIVER;
pm_runtime_set_active(dev);
}
break;
case BUS_NOTIFY_ADD_DEVICE:
if (pdev->dev.of_node)
omap_device_build_from_dt(pdev);
omap_auxdata_legacy_init(dev);
/* fall through */
default:
od = to_omap_device(pdev);
if (od)
od->_driver_status = event;
}
return NOTIFY_DONE;
}
static int _omap_device_notifier_call(struct notifier_block *nb,
unsigned long event, void *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct omap_device *od;
switch (event) {
case BUS_NOTIFY_DEL_DEVICE:
if (pdev->archdata.od)
omap_device_delete(pdev->archdata.od);
break;
case BUS_NOTIFY_ADD_DEVICE:
if (pdev->dev.of_node)
omap_device_build_from_dt(pdev);
/* fall through */
default:
od = to_omap_device(pdev);
if (od)
od->_driver_status = event;
}
return NOTIFY_DONE;
}
static void __init omap_hsmmc_init_one(struct omap2_hsmmc_info *hsmmcinfo,
int ctrl_nr)
{
struct omap_hwmod *oh;
struct omap_hwmod *ohs[1];
struct omap_device *od;
struct platform_device *pdev;
char oh_name[MAX_OMAP_MMC_HWMOD_NAME_LEN];
struct omap_mmc_platform_data *mmc_data;
struct omap_mmc_dev_attr *mmc_dev_attr;
char *name;
int res;
mmc_data = kzalloc(sizeof(struct omap_mmc_platform_data), GFP_KERNEL);
if (!mmc_data) {
pr_err("Cannot allocate memory for mmc device!\n");
return;
}
res = omap_hsmmc_pdata_init(hsmmcinfo, mmc_data);
if (res < 0)
goto free_mmc;
omap_hsmmc_mux(mmc_data, (ctrl_nr - 1));
name = "omap_hsmmc";
res = snprintf(oh_name, MAX_OMAP_MMC_HWMOD_NAME_LEN,
"mmc%d", ctrl_nr);
WARN(res >= MAX_OMAP_MMC_HWMOD_NAME_LEN,
"String buffer overflow in MMC%d device setup\n", ctrl_nr);
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
goto free_name;
}
ohs[0] = oh;
if (oh->dev_attr != NULL) {
mmc_dev_attr = oh->dev_attr;
mmc_data->controller_flags = mmc_dev_attr->flags;
/*
* erratum 2.1.1.128 doesn't apply if board has
* a transceiver is attached
*/
if (hsmmcinfo->transceiver)
mmc_data->controller_flags &=
~OMAP_HSMMC_BROKEN_MULTIBLOCK_READ;
}
pdev = platform_device_alloc(name, ctrl_nr - 1);
if (!pdev) {
pr_err("Could not allocate pdev for %s\n", name);
goto free_name;
}
dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
od = omap_device_alloc(pdev, ohs, 1, NULL, 0);
if (IS_ERR(od)) {
pr_err("Could not allocate od for %s\n", name);
goto put_pdev;
}
res = platform_device_add_data(pdev, mmc_data,
sizeof(struct omap_mmc_platform_data));
if (res) {
pr_err("Could not add pdata for %s\n", name);
goto put_pdev;
}
hsmmcinfo->pdev = pdev;
if (hsmmcinfo->deferred)
goto free_mmc;
res = omap_device_register(pdev);
if (res) {
pr_err("Could not register od for %s\n", name);
goto free_od;
}
goto free_mmc;
free_od:
omap_device_delete(od);
put_pdev:
platform_device_put(pdev);
free_name:
kfree(mmc_data->slots[0].name);
free_mmc:
kfree(mmc_data);
}
static void __init omap_hsmmc_init_one(struct omap2_hsmmc_info *hsmmcinfo,
int ctrl_nr)
{
struct omap_hwmod *oh;
struct omap_hwmod *ohs[1];
struct omap_device *od;
struct platform_device *pdev;
char oh_name[MAX_OMAP_MMC_HWMOD_NAME_LEN];
struct omap_hsmmc_platform_data *mmc_data;
struct omap_hsmmc_dev_attr *mmc_dev_attr;
char *name;
int res;
mmc_data = kzalloc(sizeof(*mmc_data), GFP_KERNEL);
if (!mmc_data)
return;
res = omap_hsmmc_pdata_init(hsmmcinfo, mmc_data);
if (res < 0)
goto free_mmc;
name = "omap_hsmmc";
res = snprintf(oh_name, MAX_OMAP_MMC_HWMOD_NAME_LEN,
"mmc%d", ctrl_nr);
WARN(res >= MAX_OMAP_MMC_HWMOD_NAME_LEN,
"String buffer overflow in MMC%d device setup\n", ctrl_nr);
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
goto free_name;
}
ohs[0] = oh;
if (oh->dev_attr != NULL) {
mmc_dev_attr = oh->dev_attr;
mmc_data->controller_flags = mmc_dev_attr->flags;
}
pdev = platform_device_alloc(name, ctrl_nr - 1);
if (!pdev) {
pr_err("Could not allocate pdev for %s\n", name);
goto free_name;
}
dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
od = omap_device_alloc(pdev, ohs, 1);
if (IS_ERR(od)) {
pr_err("Could not allocate od for %s\n", name);
goto put_pdev;
}
res = platform_device_add_data(pdev, mmc_data,
sizeof(struct omap_hsmmc_platform_data));
if (res) {
pr_err("Could not add pdata for %s\n", name);
goto put_pdev;
}
hsmmcinfo->pdev = pdev;
res = omap_device_register(pdev);
if (res) {
pr_err("Could not register od for %s\n", name);
goto free_od;
}
goto free_mmc;
free_od:
omap_device_delete(od);
put_pdev:
platform_device_put(pdev);
free_name:
kfree(mmc_data->name);
free_mmc:
kfree(mmc_data);
}