ACPI: thinkpad-acpi: prepare for device model conversion

Prepare the thinkpad-acpi driver for the conversion to the device
model, by renaming variables and doing other glue work that shall
make the later patches much cleaner.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 129 insertions, 102 deletions

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index e2a1b63a812f..809ec8400ec5 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -277,7 +277,7 @@ static int _sta(acpi_handle handle)
  * ACPI device model
  */
 
-static void ibm_handle_init(char *name,
+static void drv_acpi_handle_init(char *name,
                            acpi_handle *handle, acpi_handle parent,
                            char **paths, int num_paths, char **path)
 {
@@ -295,40 +295,42 @@ static void ibm_handle_init(char *name,
         *handle = NULL;
 }
 
-static void dispatch_notify(acpi_handle handle, u32 event, void *data)
+static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
 {
         struct ibm_struct *ibm = data;
 
-        if (!ibm || !ibm->notify)
+        if (!ibm || !ibm->acpi || !ibm->acpi->notify)
                 return;
 
-        ibm->notify(ibm, event);
+        ibm->acpi->notify(ibm, event);
 }
 
-static int __init setup_notify(struct ibm_struct *ibm)
+static int __init setup_acpi_notify(struct ibm_struct *ibm)
 {
         acpi_status status;
         int ret;
 
-        if (!*ibm->handle)
+        BUG_ON(!ibm->acpi);
+
+        if (!*ibm->acpi->handle)
                 return 0;
 
         dbg_printk(TPACPI_DBG_INIT,
                 "setting up ACPI notify for %s\n", ibm->name);
 
-        ret = acpi_bus_get_device(*ibm->handle, &ibm->device);
+        ret = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
         if (ret < 0) {
                 printk(IBM_ERR "%s device not present\n", ibm->name);
                 return -ENODEV;
         }
 
-        acpi_driver_data(ibm->device) = ibm;
-        sprintf(acpi_device_class(ibm->device), "%s/%s",
+        acpi_driver_data(ibm->acpi->device) = ibm;
+        sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
                 IBM_ACPI_EVENT_PREFIX,
                 ibm->name);
 
-        status = acpi_install_notify_handler(*ibm->handle, ibm->type,
-                                             dispatch_notify, ibm);
+        status = acpi_install_notify_handler(*ibm->acpi->handle,
+                        ibm->acpi->type, dispatch_acpi_notify, ibm);
         if (ACPI_FAILURE(status)) {
                 if (status == AE_ALREADY_EXISTS) {
                         printk(IBM_NOTICE "another device driver is already handling %s events\n",
@@ -339,11 +341,11 @@ static int __init setup_notify(struct ibm_struct *ibm)
                 }
                 return -ENODEV;
         }
-        ibm->flags.notify_installed = 1;
+        ibm->flags.acpi_notify_installed = 1;
         return 0;
 }
 
-static int __init ibm_device_add(struct acpi_device *device)
+static int __init tpacpi_device_add(struct acpi_device *device)
 {
         return 0;
 }
@@ -355,24 +357,26 @@ static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
         dbg_printk(TPACPI_DBG_INIT,
                 "registering %s as an ACPI driver\n", ibm->name);
 
-        ibm->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
-        if (!ibm->driver) {
+        BUG_ON(!ibm->acpi);
+
+        ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
+        if (!ibm->acpi->driver) {
                 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
                 return -ENOMEM;
         }
 
-        sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name);
-        ibm->driver->ids = ibm->hid;
-        ibm->driver->ops.add = &ibm_device_add;
+        sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
+        ibm->acpi->driver->ids = ibm->acpi->hid;
+        ibm->acpi->driver->ops.add = &tpacpi_device_add;
 
-        ret = acpi_bus_register_driver(ibm->driver);
+        ret = acpi_bus_register_driver(ibm->acpi->driver);
         if (ret < 0) {
                 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
-                       ibm->hid, ret);
-                kfree(ibm->driver);
-                ibm->driver = NULL;
+                       ibm->acpi->hid, ret);
+                kfree(ibm->acpi->driver);
+                ibm->acpi->driver = NULL;
         } else if (!ret)
-                ibm->flags.driver_registered = 1;
+                ibm->flags.acpi_driver_registered = 1;
 
         return ret;
 }
@@ -386,8 +390,8 @@ static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
  ****************************************************************************
  ****************************************************************************/
 
-static int dispatch_read(char *page, char **start, off_t off, int count,
-                         int *eof, void *data)
+static int dispatch_procfs_read(char *page, char **start, off_t off,
+                        int count, int *eof, void *data)
 {
         struct ibm_struct *ibm = data;
         int len;
@@ -411,8 +415,9 @@ static int dispatch_read(char *page, char **start, off_t off, int count,
         return len;
 }
 
-static int dispatch_write(struct file *file, const char __user * userbuf,
-                          unsigned long count, void *data)
+static int dispatch_procfs_write(struct file *file,
+                        const char __user * userbuf,
+                        unsigned long count, void *data)
 {
         struct ibm_struct *ibm = data;
         char *kernbuf;
@@ -508,7 +513,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
 
-        IBM_HANDLE_INIT(hkey);
+        IBM_ACPIHANDLE_INIT(hkey);
 
         /* hotkey not supported on 570 */
         tp_features.hotkey = hkey_handle != NULL;
@@ -545,10 +550,10 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
         int hkey;
 
         if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
-                acpi_bus_generate_event(ibm->device, event, hkey);
+                acpi_bus_generate_event(ibm->acpi->device, event, hkey);
         else {
                 printk(IBM_ERR "unknown hotkey event %d\n", event);
-                acpi_bus_generate_event(ibm->device, event, 0);
+                acpi_bus_generate_event(ibm->acpi->device, event, 0);
         }
 }
 
@@ -643,15 +648,19 @@ static int hotkey_write(char *buf)
         return 0;
 }
 
+static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
+        .hid = IBM_HKEY_HID,
+        .notify = hotkey_notify,
+        .handle = &hkey_handle,
+        .type = ACPI_DEVICE_NOTIFY,
+};
+
 static struct ibm_struct hotkey_driver_data = {
         .name = "hotkey",
-        .hid = IBM_HKEY_HID,
         .read = hotkey_read,
         .write = hotkey_write,
         .exit = hotkey_exit,
-        .notify = hotkey_notify,
-        .handle = &hkey_handle,
-        .type = ACPI_DEVICE_NOTIFY,
+        .acpi = &ibm_hotkey_acpidriver,
 };
 
 /*************************************************************************
@@ -662,7 +671,7 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
 
-        IBM_HANDLE_INIT(hkey);
+        IBM_ACPIHANDLE_INIT(hkey);
 
         /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
            G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
@@ -742,7 +751,7 @@ static int __init wan_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
 
-        IBM_HANDLE_INIT(hkey);
+        IBM_ACPIHANDLE_INIT(hkey);
 
         tp_features.wan = hkey_handle &&
                           acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
@@ -835,8 +844,8 @@ static int __init video_init(struct ibm_init_struct *iibm)
 
         vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
 
-        IBM_HANDLE_INIT(vid);
-        IBM_HANDLE_INIT(vid2);
+        IBM_ACPIHANDLE_INIT(vid);
+        IBM_ACPIHANDLE_INIT(vid2);
 
         if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
                 /* G41, assume IVGA doesn't change */
@@ -1053,9 +1062,9 @@ static int __init light_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
 
-        IBM_HANDLE_INIT(ledb);
-        IBM_HANDLE_INIT(lght);
-        IBM_HANDLE_INIT(cmos);
+        IBM_ACPIHANDLE_INIT(ledb);
+        IBM_ACPIHANDLE_INIT(lght);
+        IBM_ACPIHANDLE_INIT(cmos);
 
         /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
         tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
@@ -1148,8 +1157,8 @@ static int __init dock_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
 
-        IBM_HANDLE_INIT(dock);
-        IBM_HANDLE_INIT(pci);
+        IBM_ACPIHANDLE_INIT(dock);
+        IBM_ACPIHANDLE_INIT(pci);
 
         vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
                 str_supported(dock_handle != NULL));
@@ -1160,22 +1169,22 @@ static int __init dock_init(struct ibm_init_struct *iibm)
 static void dock_notify(struct ibm_struct *ibm, u32 event)
 {
         int docked = dock_docked();
-        int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID);
+        int pci = ibm->acpi->hid && strstr(ibm->acpi->hid, IBM_PCI_HID);
 
         if (event == 1 && !pci) /* 570 */
-                acpi_bus_generate_event(ibm->device, event, 1); /* button */
+                acpi_bus_generate_event(ibm->acpi->device, event, 1);   /* button */
         else if (event == 1 && pci)     /* 570 */
-                acpi_bus_generate_event(ibm->device, event, 3); /* dock */
+                acpi_bus_generate_event(ibm->acpi->device, event, 3);   /* dock */
         else if (event == 3 && docked)
-                acpi_bus_generate_event(ibm->device, event, 1); /* button */
+                acpi_bus_generate_event(ibm->acpi->device, event, 1);   /* button */
         else if (event == 3 && !docked)
-                acpi_bus_generate_event(ibm->device, event, 2); /* undock */
+                acpi_bus_generate_event(ibm->acpi->device, event, 2);   /* undock */
         else if (event == 0 && docked)
-                acpi_bus_generate_event(ibm->device, event, 3); /* dock */
+                acpi_bus_generate_event(ibm->acpi->device, event, 3);   /* dock */
         else {
                 printk(IBM_ERR "unknown dock event %d, status %d\n",
                        event, _sta(dock_handle));
-                acpi_bus_generate_event(ibm->device, event, 0); /* unknown */
+                acpi_bus_generate_event(ibm->acpi->device, event, 0);   /* unknown */
         }
 }
 
@@ -1218,17 +1227,13 @@ static int dock_write(char *buf)
         return 0;
 }
 
-static struct ibm_struct dock_driver_data[2] = {
+static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
         {
-         .name = "dock",
-         .read = dock_read,
-         .write = dock_write,
          .notify = dock_notify,
          .handle = &dock_handle,
          .type = ACPI_SYSTEM_NOTIFY,
         },
         {
-         .name = "dock",
          .hid = IBM_PCI_HID,
          .notify = dock_notify,
          .handle = &pci_handle,
@@ -1236,6 +1241,19 @@ static struct ibm_struct dock_driver_data[2] = {
         },
 };
 
+static struct ibm_struct dock_driver_data[2] = {
+        {
+         .name = "dock",
+         .read = dock_read,
+         .write = dock_write,
+         .acpi = &ibm_dock_acpidriver[0],
+        },
+        {
+         .name = "dock",
+         .acpi = &ibm_dock_acpidriver[1],
+        },
+};
+
 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
 
 /*************************************************************************
@@ -1262,12 +1280,12 @@ static int __init bay_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
 
-        IBM_HANDLE_INIT(bay);
+        IBM_ACPIHANDLE_INIT(bay);
         if (bay_handle)
-                IBM_HANDLE_INIT(bay_ej);
-        IBM_HANDLE_INIT(bay2);
+                IBM_ACPIHANDLE_INIT(bay_ej);
+        IBM_ACPIHANDLE_INIT(bay2);
         if (bay2_handle)
-                IBM_HANDLE_INIT(bay2_ej);
+                IBM_ACPIHANDLE_INIT(bay2_ej);
 
         tp_features.bay_status = bay_handle &&
                 acpi_evalf(bay_handle, NULL, "_STA", "qv");
@@ -1292,7 +1310,7 @@ static int __init bay_init(struct ibm_init_struct *iibm)
 
 static void bay_notify(struct ibm_struct *ibm, u32 event)
 {
-        acpi_bus_generate_event(ibm->device, event, 0);
+        acpi_bus_generate_event(ibm->acpi->device, event, 0);
 }
 
 #define bay_occupied(b) (_sta(b##_handle) & 1)
@@ -1347,13 +1365,17 @@ static int bay_write(char *buf)
         return 0;
 }
 
+static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
+        .notify = bay_notify,
+        .handle = &bay_handle,
+        .type = ACPI_SYSTEM_NOTIFY,
+};
+
 static struct ibm_struct bay_driver_data = {
         .name = "bay",
         .read = bay_read,
         .write = bay_write,
-        .notify = bay_notify,
-        .handle = &bay_handle,
-        .type = ACPI_SYSTEM_NOTIFY,
+        .acpi = &ibm_bay_acpidriver,
 };
 
 #endif /* CONFIG_THINKPAD_ACPI_BAY */
@@ -1367,7 +1389,7 @@ static int __init cmos_init(struct ibm_init_struct *iibm)
         vdbg_printk(TPACPI_DBG_INIT,
                 "initializing cmos commands subdriver\n");
 
-        IBM_HANDLE_INIT(cmos);
+        IBM_ACPIHANDLE_INIT(cmos);
 
         vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
                 str_supported(cmos_handle != NULL));
@@ -1441,7 +1463,7 @@ static int __init led_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
 
-        IBM_HANDLE_INIT(led);
+        IBM_ACPIHANDLE_INIT(led);
 
         if (!led_handle)
                 /* led not supported on R30, R31 */
@@ -1566,7 +1588,7 @@ static int __init beep_init(struct ibm_init_struct *iibm)
 {
         vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
 
-        IBM_HANDLE_INIT(beep);
+        IBM_ACPIHANDLE_INIT(beep);
 
         vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
                 str_supported(beep_handle != NULL));
@@ -2200,9 +2222,9 @@ static int __init fan_init(struct ibm_init_struct *iibm)
         fan_watchdog_maxinterval = 0;
         tp_features.fan_ctrl_status_undef = 0;
 
-        IBM_HANDLE_INIT(fans);
-        IBM_HANDLE_INIT(gfan);
-        IBM_HANDLE_INIT(sfan);
+        IBM_ACPIHANDLE_INIT(fans);
+        IBM_ACPIHANDLE_INIT(gfan);
+        IBM_ACPIHANDLE_INIT(sfan);
 
         if (gfan_handle) {
                 /* 570, 600e/x, 770e, 770x */
@@ -2728,22 +2750,24 @@ static int __init ibm_init(struct ibm_init_struct *iibm)
                 ibm->flags.init_called = 1;
         }
 
-        if (ibm->hid) {
-                ret = register_tpacpi_subdriver(ibm);
-                if (ret)
-                        goto err_out;
-        }
+        if (ibm->acpi) {
+                if (ibm->acpi->hid) {
+                        ret = register_tpacpi_subdriver(ibm);
+                        if (ret)
+                                goto err_out;
+                }
 
-        if (ibm->notify) {
-                ret = setup_notify(ibm);
-                if (ret == -ENODEV) {
-                        printk(IBM_NOTICE "disabling subdriver %s\n",
-                                ibm->name);
-                        ret = 0;
-                        goto err_out;
+                if (ibm->acpi->notify) {
+                        ret = setup_acpi_notify(ibm);
+                        if (ret == -ENODEV) {
+                                printk(IBM_NOTICE "disabling subdriver %s\n",
+                                        ibm->name);
+                                ret = 0;
+                                goto err_out;
+                        }
+                        if (ret < 0)
+                                goto err_out;
                 }
-                if (ret < 0)
-                        goto err_out;
         }
 
         dbg_printk(TPACPI_DBG_INIT,
@@ -2761,9 +2785,9 @@ static int __init ibm_init(struct ibm_init_struct *iibm)
                 }
                 entry->owner = THIS_MODULE;
                 entry->data = ibm;
-                entry->read_proc = &dispatch_read;
+                entry->read_proc = &dispatch_procfs_read;
                 if (ibm->write)
-                        entry->write_proc = &dispatch_write;
+                        entry->write_proc = &dispatch_procfs_write;
                 ibm->flags.proc_created = 1;
         }
 
@@ -2786,12 +2810,15 @@ static void ibm_exit(struct ibm_struct *ibm)
 
         list_del_init(&ibm->all_drivers);
 
-        if (ibm->flags.notify_installed) {
+        if (ibm->flags.acpi_notify_installed) {
                 dbg_printk(TPACPI_DBG_EXIT,
                         "%s: acpi_remove_notify_handler\n", ibm->name);
-                acpi_remove_notify_handler(*ibm->handle, ibm->type,
-                                           dispatch_notify);
-                ibm->flags.notify_installed = 0;
+                BUG_ON(!ibm->acpi);
+                acpi_remove_notify_handler(*ibm->acpi->handle,
+                                           ibm->acpi->type,
+                                           dispatch_acpi_notify);
+                ibm->flags.acpi_notify_installed = 0;
+                ibm->flags.acpi_notify_installed = 0;
         }
 
         if (ibm->flags.proc_created) {
@@ -2801,13 +2828,14 @@ static void ibm_exit(struct ibm_struct *ibm)
                 ibm->flags.proc_created = 0;
         }
 
-        if (ibm->flags.driver_registered) {
+        if (ibm->flags.acpi_driver_registered) {
                 dbg_printk(TPACPI_DBG_EXIT,
                         "%s: acpi_bus_unregister_driver\n", ibm->name);
-                acpi_bus_unregister_driver(ibm->driver);
-                kfree(ibm->driver);
-                ibm->driver = NULL;
-                ibm->flags.driver_registered = 0;
+                BUG_ON(!ibm->acpi);
+                acpi_bus_unregister_driver(ibm->acpi->driver);
+                kfree(ibm->acpi->driver);
+                ibm->acpi->driver = NULL;
+                ibm->flags.acpi_driver_registered = 0;
         }
 
         if (ibm->flags.init_called && ibm->exit) {
@@ -2860,7 +2888,7 @@ static int __init probe_for_thinkpad(void)
         is_thinkpad = dmi_name_in_vendors("ThinkPad");
 
         /* ec is required because many other handles are relative to it */
-        IBM_HANDLE_INIT(ec);
+        IBM_ACPIHANDLE_INIT(ec);
         if (!ec_handle) {
                 if (is_thinkpad)
                         printk(IBM_ERR
@@ -3016,12 +3044,12 @@ static int __init thinkpad_acpi_module_init(void)
                 return ret;
 
         ibm_thinkpad_ec_found = check_dmi_for_ec();
-        IBM_HANDLE_INIT(ecrd);
-        IBM_HANDLE_INIT(ecwr);
+        IBM_ACPIHANDLE_INIT(ecrd);
+        IBM_ACPIHANDLE_INIT(ecwr);
 
-        proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
+        proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
         if (!proc_dir) {
-                printk(IBM_ERR "unable to create proc dir %s", IBM_DIR);
+                printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
                 thinkpad_acpi_module_exit();
                 return -ENODEV;
         }
@@ -3053,10 +3081,9 @@ static void thinkpad_acpi_module_exit(void)
         dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
 
         if (proc_dir)
-                remove_proc_entry(IBM_DIR, acpi_root_dir);
+                remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
 
-        if (ibm_thinkpad_ec_found)
-                kfree(ibm_thinkpad_ec_found);
+        kfree(ibm_thinkpad_ec_found);
 }
 
 module_init(thinkpad_acpi_module_init);