ACPI: thinkpad-acpi: clean up probing and move init to subdrivers
Move most of the probing code to its own function, and most of the subdriver-specific init code into subdriver init functions. This allows us to not define pci_handle unless the dock subdriver is enabled, as well. This patch causes a minor userland interface change: if a subdriver doesn't detect a capability, /proc entries for it are not created anymore (as opposed to a /proc entry that just returned "unsupported"). Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh
Len Brown
Родитель
132ce09123
Коммит
5fba344cfd
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@ -277,9 +277,9 @@ static int _sta(acpi_handle handle)
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* ACPI device model
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*/
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static void __init ibm_handle_init(char *name,
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acpi_handle * handle, acpi_handle parent,
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char **paths, int num_paths, char **path)
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static void ibm_handle_init(char *name,
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acpi_handle *handle, acpi_handle parent,
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char **paths, int num_paths, char **path)
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{
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int i;
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acpi_status status;
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@ -351,8 +351,8 @@ static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
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ibm->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
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if (!ibm->driver) {
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printk(IBM_ERR "kmalloc(ibm->driver) failed\n");
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return -1;
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printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
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return -ENOMEM;
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}
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sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name);
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@ -364,7 +364,9 @@ static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
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printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
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ibm->hid, ret);
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kfree(ibm->driver);
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}
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ibm->driver = NULL;
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} else if (!ret)
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ibm->driver_registered = 1;
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return ret;
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}
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@ -495,6 +497,8 @@ static int hotkey_orig_mask;
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static int hotkey_init(void)
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{
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IBM_HANDLE_INIT(hkey);
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/* hotkey not supported on 570 */
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hotkey_supported = hkey_handle != NULL;
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@ -508,13 +512,14 @@ static int hotkey_init(void)
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return -ENODEV;
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}
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return 0;
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return (hotkey_supported)? 0 : 1;
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}
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static void hotkey_exit(void)
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{
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if (hotkey_supported)
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if (hotkey_supported) {
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hotkey_set(hotkey_orig_status, hotkey_orig_mask);
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}
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}
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static void hotkey_notify(struct ibm_struct *ibm, u32 event)
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@ -628,12 +633,14 @@ static int bluetooth_supported;
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static int bluetooth_init(void)
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{
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IBM_HANDLE_INIT(hkey);
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/* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
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G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
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bluetooth_supported = hkey_handle &&
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acpi_evalf(hkey_handle, NULL, "GBDC", "qv");
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return 0;
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return (bluetooth_supported)? 0 : 1;
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}
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static int bluetooth_status(void)
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@ -697,10 +704,12 @@ static int wan_supported;
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static int wan_init(void)
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{
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IBM_HANDLE_INIT(hkey);
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wan_supported = hkey_handle &&
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acpi_evalf(hkey_handle, NULL, "GWAN", "qv");
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return 0;
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return (wan_supported)? 0 : 1;
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}
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static int wan_status(void)
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@ -775,6 +784,9 @@ static int video_init(void)
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{
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int ivga;
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IBM_HANDLE_INIT(vid);
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IBM_HANDLE_INIT(vid2);
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if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
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/* G41, assume IVGA doesn't change */
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vid_handle = vid2_handle;
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@ -792,7 +804,7 @@ static int video_init(void)
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/* all others */
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video_supported = TPACPI_VIDEO_NEW;
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return 0;
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return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
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}
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static void video_exit(void)
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@ -979,6 +991,10 @@ IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
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static int light_init(void)
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{
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IBM_HANDLE_INIT(ledb);
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IBM_HANDLE_INIT(lght);
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IBM_HANDLE_INIT(cmos);
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/* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
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light_supported = (cmos_handle || lght_handle) && !ledb_handle;
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@ -988,7 +1004,7 @@ static int light_init(void)
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light_status_supported = acpi_evalf(ec_handle, NULL,
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"KBLT", "qv");
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return 0;
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return (light_supported)? 0 : 1;
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}
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static int light_read(char *p)
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@ -1044,9 +1060,6 @@ static int light_write(char *buf)
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* Dock subdriver
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*/
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/* don't list other alternatives as we install a notify handler on the 570 */
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IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
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#ifdef CONFIG_THINKPAD_ACPI_DOCK
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IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
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@ -1055,8 +1068,19 @@ IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
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"\\_SB.PCI.ISA.SLCE", /* 570 */
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); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
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/* don't list other alternatives as we install a notify handler on the 570 */
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IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
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#define dock_docked() (_sta(dock_handle) & 1)
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static int dock_init(void)
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{
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IBM_HANDLE_INIT(dock);
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IBM_HANDLE_INIT(pci);
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return (dock_handle)? 0 : 1;
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}
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static void dock_notify(struct ibm_struct *ibm, u32 event)
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{
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int docked = dock_docked();
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@ -1147,6 +1171,13 @@ IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
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static int bay_init(void)
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{
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IBM_HANDLE_INIT(bay);
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if (bay_handle)
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IBM_HANDLE_INIT(bay_ej);
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IBM_HANDLE_INIT(bay2);
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if (bay2_handle)
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IBM_HANDLE_INIT(bay2_ej);
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bay_status_supported = bay_handle &&
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acpi_evalf(bay_handle, NULL, "_STA", "qv");
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bay_status2_supported = bay2_handle &&
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@ -1157,7 +1188,8 @@ static int bay_init(void)
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bay_eject2_supported = bay2_handle && bay2_ej_handle &&
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(strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
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return 0;
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return (bay_status_supported || bay_eject_supported ||
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bay_status2_supported || bay_eject2_supported)? 0 : 1;
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}
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static void bay_notify(struct ibm_struct *ibm, u32 event)
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@ -1221,6 +1253,13 @@ static int bay_write(char *buf)
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* CMOS subdriver
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*/
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static int cmos_init(void)
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{
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IBM_HANDLE_INIT(cmos);
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return (cmos_handle)? 0 : 1;
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}
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static int cmos_eval(int cmos_cmd)
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{
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if (cmos_handle)
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@ -1281,6 +1320,8 @@ IBM_HANDLE(led, ec, "SLED", /* 570 */
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static int led_init(void)
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{
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IBM_HANDLE_INIT(led);
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if (!led_handle)
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/* led not supported on R30, R31 */
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led_supported = TPACPI_LED_NONE;
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@ -1294,7 +1335,7 @@ static int led_init(void)
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/* all others */
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led_supported = TPACPI_LED_NEW;
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return 0;
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return (led_supported != TPACPI_LED_NONE)? 0 : 1;
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}
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#define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
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@ -1391,6 +1432,13 @@ static int led_write(char *buf)
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IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
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static int beep_init(void)
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{
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IBM_HANDLE_INIT(beep);
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return (beep_handle)? 0 : 1;
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}
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static int beep_read(char *p)
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{
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int len = 0;
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@ -1436,7 +1484,9 @@ static int thermal_init(void)
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{
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u8 t, ta1, ta2;
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int i;
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int acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
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int acpi_tmp7;
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acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
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if (ibm_thinkpad_ec_found && experimental) {
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/*
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@ -1492,7 +1542,7 @@ static int thermal_init(void)
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thermal_read_mode = TPACPI_THERMAL_NONE;
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}
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return 0;
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return (thermal_read_mode != TPACPI_THERMAL_NONE)? 0 : 1;
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}
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static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
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@ -1973,6 +2023,10 @@ static int fan_init(void)
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fan_control_status_known = 1;
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fan_watchdog_maxinterval = 0;
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IBM_HANDLE_INIT(fans);
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IBM_HANDLE_INIT(gfan);
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IBM_HANDLE_INIT(sfan);
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if (gfan_handle) {
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/* 570, 600e/x, 770e, 770x */
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fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
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@ -2010,7 +2064,7 @@ static int fan_init(void)
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printk(IBM_ERR
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"ThinkPad ACPI EC access misbehaving, "
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"fan status and control unavailable\n");
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return 0;
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return 1;
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}
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}
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@ -2041,7 +2095,9 @@ static int fan_init(void)
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}
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}
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return 0;
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return (fan_status_access_mode != TPACPI_FAN_NONE ||
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fan_control_access_mode != TPACPI_FAN_WR_NONE)?
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0 : 1;
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}
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static int fan_get_status(u8 *status)
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@ -2485,6 +2541,7 @@ static struct ibm_struct ibms[] = {
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#ifdef CONFIG_THINKPAD_ACPI_DOCK
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{
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.name = "dock",
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.init = dock_init,
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.read = dock_read,
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.write = dock_write,
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.notify = dock_notify,
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@ -2512,6 +2569,7 @@ static struct ibm_struct ibms[] = {
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#endif /* CONFIG_THINKPAD_ACPI_BAY */
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{
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.name = "cmos",
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.init = cmos_init,
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.read = cmos_read,
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.write = cmos_write,
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},
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@ -2523,6 +2581,7 @@ static struct ibm_struct ibms[] = {
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},
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{
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.name = "beep",
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.init = beep_init,
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.read = beep_read,
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.write = beep_write,
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},
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@ -2571,20 +2630,33 @@ static int __init ibm_init(struct ibm_struct *ibm)
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if (ibm->experimental && !experimental)
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return 0;
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if (ibm->hid) {
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ret = register_tpacpi_subdriver(ibm);
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if (ret < 0)
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return ret;
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ibm->driver_registered = 1;
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}
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|
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if (ibm->init) {
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ret = ibm->init();
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if (ret != 0)
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if (ret > 0)
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return 0; /* probe failed */
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if (ret)
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return ret;
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ibm->init_called = 1;
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}
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if (ibm->hid) {
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ret = register_tpacpi_subdriver(ibm);
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if (ret)
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goto err_out;
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}
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|
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if (ibm->notify) {
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ret = setup_notify(ibm);
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if (ret == -ENODEV) {
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printk(IBM_NOTICE "disabling subdriver %s\n",
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ibm->name);
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ret = 0;
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goto err_out;
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}
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if (ret < 0)
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goto err_out;
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}
|
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|
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if (ibm->read) {
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entry = create_proc_entry(ibm->name,
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S_IFREG | S_IRUGO | S_IWUSR,
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@ -2592,7 +2664,8 @@ static int __init ibm_init(struct ibm_struct *ibm)
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if (!entry) {
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printk(IBM_ERR "unable to create proc entry %s\n",
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ibm->name);
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return -ENODEV;
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ret = -ENODEV;
|
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goto err_out;
|
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}
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entry->owner = THIS_MODULE;
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entry->data = ibm;
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|
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@ -2602,36 +2675,36 @@ static int __init ibm_init(struct ibm_struct *ibm)
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ibm->proc_created = 1;
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}
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if (ibm->notify) {
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ret = setup_notify(ibm);
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if (ret == -ENODEV) {
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printk(IBM_NOTICE "disabling subdriver %s\n",
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ibm->name);
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ibm_exit(ibm);
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return 0;
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}
|
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if (ret < 0)
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return ret;
|
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}
|
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|
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return 0;
|
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|
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err_out:
|
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ibm_exit(ibm);
|
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return (ret < 0)? ret : 0;
|
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}
|
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|
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static void ibm_exit(struct ibm_struct *ibm)
|
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{
|
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if (ibm->notify_installed)
|
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if (ibm->notify_installed) {
|
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acpi_remove_notify_handler(*ibm->handle, ibm->type,
|
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dispatch_notify);
|
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ibm->notify_installed = 0;
|
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}
|
||||
|
||||
if (ibm->proc_created)
|
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if (ibm->proc_created) {
|
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remove_proc_entry(ibm->name, proc_dir);
|
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|
||||
if (ibm->init_called && ibm->exit)
|
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ibm->exit();
|
||||
ibm->proc_created = 0;
|
||||
}
|
||||
|
||||
if (ibm->driver_registered) {
|
||||
acpi_bus_unregister_driver(ibm->driver);
|
||||
kfree(ibm->driver);
|
||||
ibm->driver = NULL;
|
||||
ibm->driver_registered = 0;
|
||||
}
|
||||
|
||||
if (ibm->init_called && ibm->exit) {
|
||||
ibm->exit();
|
||||
ibm->init_called = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -2663,6 +2736,32 @@ static char* __init check_dmi_for_ec(void)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
static int __init probe_for_thinkpad(void)
|
||||
{
|
||||
int is_thinkpad;
|
||||
|
||||
if (acpi_disabled)
|
||||
return -ENODEV;
|
||||
|
||||
/*
|
||||
* Non-ancient models have better DMI tagging, but very old models
|
||||
* don't.
|
||||
*/
|
||||
is_thinkpad = dmi_name_in_vendors("ThinkPad");
|
||||
|
||||
/* ec is required because many other handles are relative to it */
|
||||
IBM_HANDLE_INIT(ec);
|
||||
if (!ec_handle) {
|
||||
if (is_thinkpad)
|
||||
printk(IBM_ERR
|
||||
"Not yet supported ThinkPad detected!\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* Module init, exit, parameters */
|
||||
|
||||
static int __init set_ibm_param(const char *val, struct kernel_param *kp)
|
||||
|
|
@ -2712,45 +2811,13 @@ static int __init thinkpad_acpi_module_init(void)
|
|||
{
|
||||
int ret, i;
|
||||
|
||||
if (acpi_disabled)
|
||||
return -ENODEV;
|
||||
ret = probe_for_thinkpad();
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* ec is required because many other handles are relative to it */
|
||||
IBM_HANDLE_INIT(ec);
|
||||
if (!ec_handle) {
|
||||
printk(IBM_ERR "ec object not found\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Models with newer firmware report the EC in DMI */
|
||||
ibm_thinkpad_ec_found = check_dmi_for_ec();
|
||||
|
||||
/* these handles are not required */
|
||||
IBM_HANDLE_INIT(vid);
|
||||
IBM_HANDLE_INIT(vid2);
|
||||
IBM_HANDLE_INIT(ledb);
|
||||
IBM_HANDLE_INIT(led);
|
||||
IBM_HANDLE_INIT(hkey);
|
||||
IBM_HANDLE_INIT(lght);
|
||||
IBM_HANDLE_INIT(cmos);
|
||||
#ifdef CONFIG_THINKPAD_ACPI_DOCK
|
||||
IBM_HANDLE_INIT(dock);
|
||||
#endif
|
||||
IBM_HANDLE_INIT(pci);
|
||||
#ifdef CONFIG_THINKPAD_ACPI_BAY
|
||||
IBM_HANDLE_INIT(bay);
|
||||
if (bay_handle)
|
||||
IBM_HANDLE_INIT(bay_ej);
|
||||
IBM_HANDLE_INIT(bay2);
|
||||
if (bay2_handle)
|
||||
IBM_HANDLE_INIT(bay2_ej);
|
||||
#endif /* CONFIG_THINKPAD_ACPI_BAY */
|
||||
IBM_HANDLE_INIT(beep);
|
||||
IBM_HANDLE_INIT(ecrd);
|
||||
IBM_HANDLE_INIT(ecwr);
|
||||
IBM_HANDLE_INIT(fans);
|
||||
IBM_HANDLE_INIT(gfan);
|
||||
IBM_HANDLE_INIT(sfan);
|
||||
|
||||
proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir);
|
||||
if (!proc_dir) {
|
||||
|
|
|
|||
|
|
@ -104,7 +104,7 @@ static acpi_handle ecrd_handle, ecwr_handle; /* 570 EC access */
|
|||
static acpi_handle cmos_handle, hkey_handle; /* basic thinkpad handles */
|
||||
|
||||
static void ibm_handle_init(char *name,
|
||||
acpi_handle * handle, acpi_handle parent,
|
||||
acpi_handle *handle, acpi_handle parent,
|
||||
char **paths, int num_paths, char **path);
|
||||
#define IBM_HANDLE_INIT(object) \
|
||||
ibm_handle_init(#object, &object##_handle, *object##_parent, \
|
||||
|
|
@ -242,8 +242,8 @@ static int cmos_write(char *buf);
|
|||
* Dock subdriver
|
||||
*/
|
||||
|
||||
static acpi_handle pci_handle;
|
||||
#ifdef CONFIG_THINKPAD_ACPI_DOCK
|
||||
static acpi_handle pci_handle;
|
||||
static acpi_handle dock_handle;
|
||||
|
||||
static void dock_notify(struct ibm_struct *ibm, u32 event);
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче