From 2a3e480d4b3392ce8907089094bd074575f9bb2a Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 1 Nov 2007 22:13:32 -0400 Subject: [PATCH] Input: appletouch - idle reset logic broke older Fountains Fountains do not support change mode request and therefore should be excluded from idle reset attempts. Also: - do not re-submit URB when we decide that touchpad needs to be reinicialized - do not repeat size detection when reinitializing the touchpad - Add missing KERN_* prefixes to messages Signed-off-by: Dmitry Torokhov Acked-by: Johannes Berg --- drivers/input/mouse/appletouch.c | 125 +++++++++++++++++++------------ 1 file changed, 77 insertions(+), 48 deletions(-) diff --git a/drivers/input/mouse/appletouch.c b/drivers/input/mouse/appletouch.c index f132702d137d..b4423a471f02 100644 --- a/drivers/input/mouse/appletouch.c +++ b/drivers/input/mouse/appletouch.c @@ -129,12 +129,12 @@ MODULE_DEVICE_TABLE (usb, atp_table); */ #define ATP_THRESHOLD 5 -/* MacBook Pro (Geyser 3 & 4) initialization constants */ -#define ATP_GEYSER3_MODE_READ_REQUEST_ID 1 -#define ATP_GEYSER3_MODE_WRITE_REQUEST_ID 9 -#define ATP_GEYSER3_MODE_REQUEST_VALUE 0x300 -#define ATP_GEYSER3_MODE_REQUEST_INDEX 0 -#define ATP_GEYSER3_MODE_VENDOR_VALUE 0x04 +/* Geyser initialization constants */ +#define ATP_GEYSER_MODE_READ_REQUEST_ID 1 +#define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9 +#define ATP_GEYSER_MODE_REQUEST_VALUE 0x300 +#define ATP_GEYSER_MODE_REQUEST_INDEX 0 +#define ATP_GEYSER_MODE_VENDOR_VALUE 0x04 /* Structure to hold all of our device specific stuff */ struct atp { @@ -142,9 +142,11 @@ struct atp { struct usb_device * udev; /* usb device */ struct urb * urb; /* usb request block */ signed char * data; /* transferred data */ - int open; /* non-zero if opened */ - struct input_dev *input; /* input dev */ - int valid; /* are the sensors valid ? */ + struct input_dev * input; /* input dev */ + unsigned char open; /* non-zero if opened */ + unsigned char valid; /* are the sensors valid ? */ + unsigned char size_detect_done; + unsigned char overflowwarn; /* overflow warning printed? */ int x_old; /* last reported x/y, */ int y_old; /* used for smoothing */ /* current value of the sensors */ @@ -153,7 +155,6 @@ struct atp { signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; /* accumulated sensors */ int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; - int overflowwarn; /* overflow warning printed? */ int datalen; /* size of an USB urb transfer */ int idlecount; /* number of empty packets */ struct work_struct work; @@ -170,7 +171,7 @@ struct atp { #define dprintk(format, a...) \ do { \ - if (debug) printk(format, ##a); \ + if (debug) printk(KERN_DEBUG format, ##a); \ } while (0) MODULE_AUTHOR("Johannes Berg, Stelian Pop, Frank Arnold, Michael Hanselmann"); @@ -188,6 +189,15 @@ static int debug = 1; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "Activate debugging output"); +static inline int atp_is_fountain(struct atp *dev) +{ + u16 productId = le16_to_cpu(dev->udev->descriptor.idProduct); + + return productId == FOUNTAIN_ANSI_PRODUCT_ID || + productId == FOUNTAIN_ISO_PRODUCT_ID || + productId == FOUNTAIN_TP_ONLY_PRODUCT_ID; +} + /* Checks if the device a Geyser 2 (ANSI, ISO, JIS) */ static inline int atp_is_geyser_2(struct atp *dev) { @@ -211,52 +221,63 @@ static inline int atp_is_geyser_3(struct atp *dev) } /* - * By default Geyser 3 device sends standard USB HID mouse + * By default newer Geyser devices send standard USB HID mouse * packets (Report ID 2). This code changes device mode, so it * sends raw sensor reports (Report ID 5). */ -static int atp_geyser3_init(struct usb_device *udev) +static int atp_geyser_init(struct usb_device *udev) { char data[8]; int size; size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), - ATP_GEYSER3_MODE_READ_REQUEST_ID, + ATP_GEYSER_MODE_READ_REQUEST_ID, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, - ATP_GEYSER3_MODE_REQUEST_VALUE, - ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); + ATP_GEYSER_MODE_REQUEST_VALUE, + ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000); if (size != 8) { err("Could not do mode read request from device" - " (Geyser 3 mode)"); + " (Geyser Raw mode)"); return -EIO; } /* Apply the mode switch */ - data[0] = ATP_GEYSER3_MODE_VENDOR_VALUE; + data[0] = ATP_GEYSER_MODE_VENDOR_VALUE; size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - ATP_GEYSER3_MODE_WRITE_REQUEST_ID, + ATP_GEYSER_MODE_WRITE_REQUEST_ID, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, - ATP_GEYSER3_MODE_REQUEST_VALUE, - ATP_GEYSER3_MODE_REQUEST_INDEX, &data, 8, 5000); + ATP_GEYSER_MODE_REQUEST_VALUE, + ATP_GEYSER_MODE_REQUEST_INDEX, &data, 8, 5000); if (size != 8) { err("Could not do mode write request to device" - " (Geyser 3 mode)"); + " (Geyser Raw mode)"); return -EIO; } return 0; } -/* Reinitialise the device if it's a geyser 3 */ +/* + * Reinitialise the device. This usually stops stream of empty packets + * coming from it. + */ static void atp_reinit(struct work_struct *work) { struct atp *dev = container_of(work, struct atp, work); struct usb_device *udev = dev->udev; + int retval; dev->idlecount = 0; - atp_geyser3_init(udev); + + atp_geyser_init(udev); + + retval = usb_submit_urb(dev->urb, GFP_ATOMIC); + if (retval) { + err("%s - usb_submit_urb failed with result %d", + __FUNCTION__, retval); + } } static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, @@ -337,7 +358,7 @@ static void atp_complete(struct urb* urb) break; case -EOVERFLOW: if(!dev->overflowwarn) { - printk("appletouch: OVERFLOW with data " + printk(KERN_WARNING "appletouch: OVERFLOW with data " "length %d, actual length is %d\n", dev->datalen, dev->urb->actual_length); dev->overflowwarn = 1; @@ -426,15 +447,17 @@ static void atp_complete(struct urb* urb) dev->x_old = dev->y_old = -1; memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); - if (atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */ + if (dev->size_detect_done || + atp_is_geyser_3(dev)) /* No 17" Macbooks (yet) */ goto exit; /* 17" Powerbooks have extra X sensors */ - for (i = (atp_is_geyser_2(dev)?15:16); i < ATP_XSENSORS; i++) { - if (!dev->xy_cur[i]) continue; + for (i = (atp_is_geyser_2(dev) ? 15 : 16); i < ATP_XSENSORS; i++) { + if (!dev->xy_cur[i]) + continue; - printk("appletouch: 17\" model detected.\n"); - if(atp_is_geyser_2(dev)) + printk(KERN_INFO "appletouch: 17\" model detected.\n"); + if (atp_is_geyser_2(dev)) input_set_abs_params(dev->input, ABS_X, 0, (20 - 1) * ATP_XFACT - 1, @@ -444,10 +467,10 @@ static void atp_complete(struct urb* urb) (ATP_XSENSORS - 1) * ATP_XFACT - 1, ATP_FUZZ, 0); - break; } + dev->size_detect_done = 1; goto exit; } @@ -479,7 +502,7 @@ static void atp_complete(struct urb* urb) dev->y_old = y; if (debug > 1) - printk("appletouch: X: %3d Y: %3d " + printk(KERN_DEBUG "appletouch: X: %3d Y: %3d " "Xz: %3d Yz: %3d\n", x, y, x_z, y_z); @@ -507,19 +530,25 @@ static void atp_complete(struct urb* urb) input_report_key(dev->input, BTN_LEFT, key); input_sync(dev->input); - /* Many Geysers will continue to send packets continually after - the first touch unless reinitialised. Do so if it's been - idle for a while in order to avoid waking the kernel up - several hundred times a second */ - - if (!x && !y && !key) { - dev->idlecount++; - if (dev->idlecount == 10) { - dev->valid = 0; - schedule_work(&dev->work); - } - } else - dev->idlecount = 0; + /* + * Many Geysers will continue to send packets continually after + * the first touch unless reinitialised. Do so if it's been + * idle for a while in order to avoid waking the kernel up + * several hundred times a second. Re-initialization does not + * work on Fountain touchpads. + */ + if (!atp_is_fountain(dev)) { + if (!x && !y && !key) { + dev->idlecount++; + if (dev->idlecount == 10) { + dev->valid = 0; + schedule_work(&dev->work); + /* Don't resubmit urb here, wait for reinit */ + return; + } + } else + dev->idlecount = 0; + } exit: retval = usb_submit_urb(dev->urb, GFP_ATOMIC); @@ -593,12 +622,12 @@ static int atp_probe(struct usb_interface *iface, const struct usb_device_id *id else dev->datalen = 81; - if (atp_is_geyser_3(dev)) { + if (!atp_is_fountain(dev)) { /* switch to raw sensor mode */ - if (atp_geyser3_init(udev)) + if (atp_geyser_init(udev)) goto err_free_devs; - printk("appletouch Geyser 3 inited.\n"); + printk(KERN_INFO "appletouch: Geyser mode initialized.\n"); } dev->urb = usb_alloc_urb(0, GFP_KERNEL); -- 2.20.1