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-rw-r--r--drivers/hid/Kconfig6
-rw-r--r--drivers/hid/Makefile1
-rw-r--r--drivers/hid/hid-core.c1
-rw-r--r--drivers/hid/hid-elecom.c57
-rw-r--r--drivers/hid/hid-ids.h81
-rw-r--r--drivers/hid/hid-input.c3
-rw-r--r--drivers/hid/hid-picolcd.c199
-rw-r--r--drivers/hid/hidraw.c2
8 files changed, 276 insertions, 74 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 43409936905..d51f0144a3b 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -148,6 +148,12 @@ config HID_EGALAX
---help---
Support for the eGalax dual-touch panel.
+config HID_ELECOM
+ tristate "ELECOM"
+ depends on BT_HIDP
+ ---help---
+ Support for the ELECOM BM084 (bluetooth mouse).
+
config HID_EZKEY
tristate "Ezkey" if EMBEDDED
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 987fa062736..2ec042f5713 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_HID_CHICONY) += hid-chicony.o
obj-$(CONFIG_HID_CYPRESS) += hid-cypress.o
obj-$(CONFIG_HID_DRAGONRISE) += hid-drff.o
obj-$(CONFIG_HID_EGALAX) += hid-egalax.o
+obj-$(CONFIG_HID_ELECOM) += hid-elecom.o
obj-$(CONFIG_HID_EZKEY) += hid-ezkey.o
obj-$(CONFIG_HID_GYRATION) += hid-gyration.o
obj-$(CONFIG_HID_KENSINGTON) += hid-kensington.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 866e54ec5fb..a204d092e2d 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1294,6 +1294,7 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
+ { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
diff --git a/drivers/hid/hid-elecom.c b/drivers/hid/hid-elecom.c
new file mode 100644
index 00000000000..7a40878f46b
--- /dev/null
+++ b/drivers/hid/hid-elecom.c
@@ -0,0 +1,57 @@
+/*
+ * HID driver for Elecom BM084 (bluetooth mouse).
+ * Removes a non-existing horizontal wheel from
+ * the HID descriptor.
+ * (This module is based on "hid-ortek".)
+ *
+ * Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+static void elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int rsize)
+{
+ if (rsize >= 48 && rdesc[46] == 0x05 && rdesc[47] == 0x0c) {
+ dev_info(&hdev->dev, "Fixing up Elecom BM084 "
+ "report descriptor.\n");
+ rdesc[47] = 0x00;
+ }
+}
+
+static const struct hid_device_id elecom_devices[] = {
+ { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084)},
+ { }
+};
+MODULE_DEVICE_TABLE(hid, elecom_devices);
+
+static struct hid_driver elecom_driver = {
+ .name = "elecom",
+ .id_table = elecom_devices,
+ .report_fixup = elecom_report_fixup
+};
+
+static int __init elecom_init(void)
+{
+ return hid_register_driver(&elecom_driver);
+}
+
+static void __exit elecom_exit(void)
+{
+ hid_unregister_driver(&elecom_driver);
+}
+
+module_init(elecom_init);
+module_exit(elecom_exit);
+MODULE_LICENSE("GPL");
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 31601eef25d..7f0e40bdb47 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -34,7 +34,7 @@
#define USB_DEVICE_ID_ACECAD_FLAIR 0x0004
#define USB_DEVICE_ID_ACECAD_302 0x0008
-#define USB_VENDOR_ID_ADS_TECH 0x06e1
+#define USB_VENDOR_ID_ADS_TECH 0x06e1
#define USB_DEVICE_ID_ADS_TECH_RADIO_SI470X 0xa155
#define USB_VENDOR_ID_AFATECH 0x15a4
@@ -81,12 +81,12 @@
#define USB_DEVICE_ID_APPLE_WELLSPRING_ANSI 0x0223
#define USB_DEVICE_ID_APPLE_WELLSPRING_ISO 0x0224
#define USB_DEVICE_ID_APPLE_WELLSPRING_JIS 0x0225
-#define USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI 0x0229
-#define USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO 0x022a
-#define USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS 0x022b
-#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI 0x022c
-#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO 0x022d
-#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS 0x022e
+#define USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI 0x0229
+#define USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO 0x022a
+#define USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS 0x022b
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI 0x022c
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO 0x022d
+#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS 0x022e
#define USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI 0x0230
#define USB_DEVICE_ID_APPLE_WELLSPRING2_ISO 0x0231
#define USB_DEVICE_ID_APPLE_WELLSPRING2_JIS 0x0232
@@ -118,8 +118,8 @@
#define USB_VENDOR_ID_AVERMEDIA 0x07ca
#define USB_DEVICE_ID_AVER_FM_MR800 0xb800
-#define USB_VENDOR_ID_BELKIN 0x050d
-#define USB_DEVICE_ID_FLIP_KVM 0x3201
+#define USB_VENDOR_ID_BELKIN 0x050d
+#define USB_DEVICE_ID_FLIP_KVM 0x3201
#define USB_VENDOR_ID_BERKSHIRE 0x0c98
#define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
@@ -128,7 +128,7 @@
#define USB_DEVICE_ID_BTC_EMPREX_REMOTE 0x5578
#define USB_VENDOR_ID_CANDO 0x2087
-#define USB_DEVICE_ID_CANDO_MULTI_TOUCH 0x0a01
+#define USB_DEVICE_ID_CANDO_MULTI_TOUCH 0x0a01
#define USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6 0x0b03
#define USB_VENDOR_ID_CH 0x068e
@@ -175,7 +175,7 @@
#define USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701 0x819a
#define USB_VENDOR_ID_DELORME 0x1163
-#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
+#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
#define USB_DEVICE_ID_DELORME_EM_LT20 0x0200
#define USB_VENDOR_ID_DMI 0x0c0b
@@ -187,19 +187,22 @@
#define USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER 0x0001
#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH 0x480d
+#define USB_VENDOR_ID_ELECOM 0x056e
+#define USB_DEVICE_ID_ELECOM_BM084 0x0061
+
#define USB_VENDOR_ID_ELO 0x04E7
#define USB_DEVICE_ID_ELO_TS2700 0x0020
#define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
-#define USB_VENDOR_ID_ETURBOTOUCH 0x22b9
-#define USB_DEVICE_ID_ETURBOTOUCH 0x0006
-
#define USB_VENDOR_ID_ETT 0x0664
#define USB_DEVICE_ID_TC5UH 0x0309
-#define USB_VENDOR_ID_EZKEY 0x0518
+#define USB_VENDOR_ID_ETURBOTOUCH 0x22b9
+#define USB_DEVICE_ID_ETURBOTOUCH 0x0006
+
+#define USB_VENDOR_ID_EZKEY 0x0518
#define USB_DEVICE_ID_BTC_8193 0x0002
#define USB_VENDOR_ID_GAMERON 0x0810
@@ -296,9 +299,16 @@
#define USB_VENDOR_ID_KBGEAR 0x084e
#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
+#define USB_VENDOR_ID_KENSINGTON 0x047d
+#define USB_DEVICE_ID_KS_SLIMBLADE 0x2041
+
#define USB_VENDOR_ID_KWORLD 0x1b80
#define USB_DEVICE_ID_KWORLD_RADIO_FM700 0xd700
+#define USB_VENDOR_ID_KYE 0x0458
+#define USB_DEVICE_ID_KYE_ERGO_525V 0x0087
+#define USB_DEVICE_ID_KYE_GPEN_560 0x5003
+
#define USB_VENDOR_ID_LABTEC 0x1020
#define USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD 0x0006
@@ -318,9 +328,6 @@
#define USB_DEVICE_ID_LD_POWERCONTROL 0x2030
#define USB_DEVICE_ID_LD_MACHINETEST 0x2040
-#define USB_VENDOR_ID_KENSINGTON 0x047d
-#define USB_DEVICE_ID_KS_SLIMBLADE 0x2041
-
#define USB_VENDOR_ID_LOGITECH 0x046d
#define USB_DEVICE_ID_LOGITECH_RECEIVER 0xc101
#define USB_DEVICE_ID_LOGITECH_HARMONY_FIRST 0xc110
@@ -376,23 +383,23 @@
#define USB_VENDOR_ID_MONTEREY 0x0566
#define USB_DEVICE_ID_GENIUS_KB29E 0x3004
+#define USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR 0x0400
+#define USB_DEVICE_ID_N_S_HARMONY 0xc359
+
+#define USB_VENDOR_ID_NATSU 0x08b7
+#define USB_DEVICE_ID_NATSU_GAMEPAD 0x0001
+
#define USB_VENDOR_ID_NCR 0x0404
#define USB_DEVICE_ID_NCR_FIRST 0x0300
#define USB_DEVICE_ID_NCR_LAST 0x03ff
-#define USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR 0x0400
-#define USB_DEVICE_ID_N_S_HARMONY 0xc359
-
-#define USB_VENDOR_ID_NATSU 0x08b7
-#define USB_DEVICE_ID_NATSU_GAMEPAD 0x0001
-
#define USB_VENDOR_ID_NEC 0x073e
#define USB_DEVICE_ID_NEC_USB_GAME_PAD 0x0301
#define USB_VENDOR_ID_NEXTWINDOW 0x1926
#define USB_DEVICE_ID_NEXTWINDOW_TOUCHSCREEN 0x0003
-#define USB_VENDOR_ID_NTRIG 0x1b96
+#define USB_VENDOR_ID_NTRIG 0x1b96
#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN 0x0001
#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1 0x0003
#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2 0x0004
@@ -427,7 +434,7 @@
#define USB_VENDOR_ID_PETALYNX 0x18b1
#define USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE 0x0037
-#define USB_VENDOR_ID_PHILIPS 0x0471
+#define USB_VENDOR_ID_PHILIPS 0x0471
#define USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE 0x0617
#define USB_VENDOR_ID_PLAYDOTCOM 0x0b43
@@ -439,16 +446,16 @@
#define USB_VENDOR_ID_PRODIGE 0x05af
#define USB_DEVICE_ID_PRODIGE_CORDLESS 0x3062
+#define USB_VENDOR_ID_QUANTA 0x0408
+#define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH 0x3000
+#define USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN 0x3001
+
#define USB_VENDOR_ID_ROCCAT 0x1e7d
#define USB_DEVICE_ID_ROCCAT_KONE 0x2ced
#define USB_VENDOR_ID_SAITEK 0x06a3
#define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
-#define USB_VENDOR_ID_QUANTA 0x0408
-#define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH 0x3000
-#define USB_DEVICE_ID_PIXART_IMAGING_INC_OPTICAL_TOUCH_SCREEN 0x3001
-
#define USB_VENDOR_ID_SAMSUNG 0x0419
#define USB_DEVICE_ID_SAMSUNG_IR_REMOTE 0x0001
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE 0x0600
@@ -472,20 +479,20 @@
#define USB_VENDOR_ID_THRUSTMASTER 0x044f
-#define USB_VENDOR_ID_TOUCHPACK 0x1bfd
-#define USB_DEVICE_ID_TOUCHPACK_RTS 0x1688
-
#define USB_VENDOR_ID_TOPMAX 0x0663
#define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
#define USB_VENDOR_ID_TOPSEED 0x0766
#define USB_DEVICE_ID_TOPSEED_CYBERLINK 0x0204
+#define USB_VENDOR_ID_TOUCHPACK 0x1bfd
+#define USB_DEVICE_ID_TOUCHPACK_RTS 0x1688
+
#define USB_VENDOR_ID_TURBOX 0x062a
#define USB_DEVICE_ID_TURBOX_KEYBOARD 0x0201
-#define USB_VENDOR_ID_TWINHAN 0x6253
-#define USB_DEVICE_ID_TWINHAN_IR_REMOTE 0x0100
+#define USB_VENDOR_ID_TWINHAN 0x6253
+#define USB_DEVICE_ID_TWINHAN_IR_REMOTE 0x0100
#define USB_VENDOR_ID_UCLOGIC 0x5543
#define USB_DEVICE_ID_UCLOGIC_TABLET_PF1209 0x0042
@@ -522,9 +529,5 @@
#define USB_VENDOR_ID_ZYDACRON 0x13EC
#define USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL 0x0006
-#define USB_VENDOR_ID_KYE 0x0458
-#define USB_DEVICE_ID_KYE_ERGO_525V 0x0087
-#define USB_DEVICE_ID_KYE_GPEN_560 0x5003
-
#endif
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 7a0d2e4661a..6b10e5afe77 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -301,6 +301,9 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
case HID_UP_DIGITIZER:
switch (usage->hid & 0xff) {
+ case 0x00: /* Undefined */
+ goto ignore;
+
case 0x30: /* TipPressure */
if (!test_bit(BTN_TOUCH, input->keybit)) {
device->quirks |= HID_QUIRK_NOTOUCH;
diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c
index 7aabf65c48e..346f0e34987 100644
--- a/drivers/hid/hid-picolcd.c
+++ b/drivers/hid/hid-picolcd.c
@@ -127,6 +127,26 @@ static const struct fb_var_screeninfo picolcdfb_var = {
.height = 26,
.bits_per_pixel = 1,
.grayscale = 1,
+ .red = {
+ .offset = 0,
+ .length = 1,
+ .msb_right = 0,
+ },
+ .green = {
+ .offset = 0,
+ .length = 1,
+ .msb_right = 0,
+ },
+ .blue = {
+ .offset = 0,
+ .length = 1,
+ .msb_right = 0,
+ },
+ .transp = {
+ .offset = 0,
+ .length = 0,
+ .msb_right = 0,
+ },
};
#endif /* CONFIG_HID_PICOLCD_FB */
@@ -188,6 +208,7 @@ struct picolcd_data {
/* Framebuffer stuff */
u8 fb_update_rate;
u8 fb_bpp;
+ u8 fb_force;
u8 *fb_vbitmap; /* local copy of what was sent to PicoLCD */
u8 *fb_bitmap; /* framebuffer */
struct fb_info *fb_info;
@@ -346,7 +367,7 @@ static int picolcd_fb_update_tile(u8 *vbitmap, const u8 *bitmap, int bpp,
const u8 *bdata = bitmap + tile * 256 + chip * 8 + b * 32;
for (i = 0; i < 64; i++) {
tdata[i] <<= 1;
- tdata[i] |= (bdata[i/8] >> (7 - i % 8)) & 0x01;
+ tdata[i] |= (bdata[i/8] >> (i % 8)) & 0x01;
}
}
} else if (bpp == 8) {
@@ -399,13 +420,10 @@ static int picolcd_fb_reset(struct picolcd_data *data, int clear)
if (data->fb_bitmap) {
if (clear) {
- memset(data->fb_vbitmap, 0xff, PICOLCDFB_SIZE);
+ memset(data->fb_vbitmap, 0, PICOLCDFB_SIZE);
memset(data->fb_bitmap, 0, PICOLCDFB_SIZE*data->fb_bpp);
- } else {
- /* invert 1 byte in each tile to force resend */
- for (i = 0; i < PICOLCDFB_SIZE; i += 64)
- data->fb_vbitmap[i] = ~data->fb_vbitmap[i];
}
+ data->fb_force = 1;
}
/* schedule first output of framebuffer */
@@ -421,6 +439,9 @@ static void picolcd_fb_update(struct picolcd_data *data)
int chip, tile, n;
unsigned long flags;
+ if (!data)
+ return;
+
spin_lock_irqsave(&data->lock, flags);
if (!(data->status & PICOLCD_READY_FB)) {
spin_unlock_irqrestore(&data->lock, flags);
@@ -440,14 +461,18 @@ static void picolcd_fb_update(struct picolcd_data *data)
for (chip = 0; chip < 4; chip++)
for (tile = 0; tile < 8; tile++)
if (picolcd_fb_update_tile(data->fb_vbitmap,
- data->fb_bitmap, data->fb_bpp, chip, tile)) {
+ data->fb_bitmap, data->fb_bpp, chip, tile) ||
+ data->fb_force) {
n += 2;
+ if (!data->fb_info->par)
+ return; /* device lost! */
if (n >= HID_OUTPUT_FIFO_SIZE / 2) {
usbhid_wait_io(data->hdev);
n = 0;
}
picolcd_fb_send_tile(data->hdev, chip, tile);
}
+ data->fb_force = false;
if (n)
usbhid_wait_io(data->hdev);
}
@@ -511,11 +536,23 @@ static int picolcd_fb_blank(int blank, struct fb_info *info)
static void picolcd_fb_destroy(struct fb_info *info)
{
struct picolcd_data *data = info->par;
+ u32 *ref_cnt = info->pseudo_palette;
+ int may_release;
+
info->par = NULL;
if (data)
data->fb_info = NULL;
fb_deferred_io_cleanup(info);
- framebuffer_release(info);
+
+ ref_cnt--;
+ mutex_lock(&info->lock);
+ (*ref_cnt)--;
+ may_release = !ref_cnt;
+ mutex_unlock(&info->lock);
+ if (may_release) {
+ framebuffer_release(info);
+ vfree((u8 *)info->fix.smem_start);
+ }
}
static int picolcd_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
@@ -526,29 +563,37 @@ static int picolcd_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *i
/* only allow 1/8 bit depth (8-bit is grayscale) */
*var = picolcdfb_var;
var->activate = activate;
- if (bpp >= 8)
+ if (bpp >= 8) {
var->bits_per_pixel = 8;
- else
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
+ } else {
var->bits_per_pixel = 1;
+ var->red.length = 1;
+ var->green.length = 1;
+ var->blue.length = 1;
+ }
return 0;
}
static int picolcd_set_par(struct fb_info *info)
{
struct picolcd_data *data = info->par;
- u8 *o_fb, *n_fb;
+ u8 *tmp_fb, *o_fb;
+ if (!data)
+ return -ENODEV;
if (info->var.bits_per_pixel == data->fb_bpp)
return 0;
/* switch between 1/8 bit depths */
if (info->var.bits_per_pixel != 1 && info->var.bits_per_pixel != 8)
return -EINVAL;
- o_fb = data->fb_bitmap;
- n_fb = vmalloc(PICOLCDFB_SIZE*info->var.bits_per_pixel);
- if (!n_fb)
+ o_fb = data->fb_bitmap;
+ tmp_fb = kmalloc(PICOLCDFB_SIZE*info->var.bits_per_pixel, GFP_KERNEL);
+ if (!tmp_fb)
return -ENOMEM;
- fb_deferred_io_cleanup(info);
/* translate FB content to new bits-per-pixel */
if (info->var.bits_per_pixel == 1) {
int i, b;
@@ -558,24 +603,87 @@ static int picolcd_set_par(struct fb_info *info)
p <<= 1;
p |= o_fb[i*8+b] ? 0x01 : 0x00;
}
+ tmp_fb[i] = p;
}
+ memcpy(o_fb, tmp_fb, PICOLCDFB_SIZE);
info->fix.visual = FB_VISUAL_MONO01;
info->fix.line_length = PICOLCDFB_WIDTH / 8;
} else {
int i;
+ memcpy(tmp_fb, o_fb, PICOLCDFB_SIZE);
for (i = 0; i < PICOLCDFB_SIZE * 8; i++)
- n_fb[i] = o_fb[i/8] & (0x01 << (7 - i % 8)) ? 0xff : 0x00;
- info->fix.visual = FB_VISUAL_TRUECOLOR;
+ o_fb[i] = tmp_fb[i/8] & (0x01 << (7 - i % 8)) ? 0xff : 0x00;
+ info->fix.visual = FB_VISUAL_DIRECTCOLOR;
info->fix.line_length = PICOLCDFB_WIDTH;
}
- data->fb_bitmap = n_fb;
+ kfree(tmp_fb);
data->fb_bpp = info->var.bits_per_pixel;
- info->screen_base = (char __force __iomem *)n_fb;
- info->fix.smem_start = (unsigned long)n_fb;
- info->fix.smem_len = PICOLCDFB_SIZE*data->fb_bpp;
- fb_deferred_io_init(info);
- vfree(o_fb);
+ return 0;
+}
+
+/* Do refcounting on our FB and cleanup per worker if FB is
+ * closed after unplug of our device
+ * (fb_release holds info->lock and still touches info after
+ * we return so we can't release it immediately.
+ */
+struct picolcd_fb_cleanup_item {
+ struct fb_info *info;
+ struct picolcd_fb_cleanup_item *next;
+};
+static struct picolcd_fb_cleanup_item *fb_pending;
+DEFINE_SPINLOCK(fb_pending_lock);
+
+static void picolcd_fb_do_cleanup(struct work_struct *data)
+{
+ struct picolcd_fb_cleanup_item *item;
+ unsigned long flags;
+
+ do {
+ spin_lock_irqsave(&fb_pending_lock, flags);
+ item = fb_pending;
+ fb_pending = item ? item->next : NULL;
+ spin_unlock_irqrestore(&fb_pending_lock, flags);
+
+ if (item) {
+ u8 *fb = (u8 *)item->info->fix.smem_start;
+ /* make sure we do not race against fb core when
+ * releasing */
+ mutex_lock(&item->info->lock);
+ mutex_unlock(&item->info->lock);
+ framebuffer_release(item->info);
+ vfree(fb);
+ }
+ } while (item);
+}
+
+DECLARE_WORK(picolcd_fb_cleanup, picolcd_fb_do_cleanup);
+
+static int picolcd_fb_open(struct fb_info *info, int u)
+{
+ u32 *ref_cnt = info->pseudo_palette;
+ ref_cnt--;
+
+ (*ref_cnt)++;
+ return 0;
+}
+
+static int picolcd_fb_release(struct fb_info *info, int u)
+{
+ u32 *ref_cnt = info->pseudo_palette;
+ ref_cnt--;
+
+ (*ref_cnt)++;
+ if (!*ref_cnt) {
+ unsigned long flags;
+ struct picolcd_fb_cleanup_item *item = (struct picolcd_fb_cleanup_item *)ref_cnt;
+ item--;
+ spin_lock_irqsave(&fb_pending_lock, flags);
+ item->next = fb_pending;
+ fb_pending = item;
+ spin_unlock_irqrestore(&fb_pending_lock, flags);
+ schedule_work(&picolcd_fb_cleanup);
+ }
return 0;
}
@@ -583,6 +691,8 @@ static int picolcd_set_par(struct fb_info *info)
static struct fb_ops picolcdfb_ops = {
.owner = THIS_MODULE,
.fb_destroy = picolcd_fb_destroy,
+ .fb_open = picolcd_fb_open,
+ .fb_release = picolcd_fb_release,
.fb_read = fb_sys_read,
.fb_write = picolcd_fb_write,
.fb_blank = picolcd_fb_blank,
@@ -660,11 +770,12 @@ static int picolcd_init_framebuffer(struct picolcd_data *data)
{
struct device *dev = &data->hdev->dev;
struct fb_info *info = NULL;
- int error = -ENOMEM;
+ int i, error = -ENOMEM;
u8 *fb_vbitmap = NULL;
u8 *fb_bitmap = NULL;
+ u32 *palette;
- fb_bitmap = vmalloc(PICOLCDFB_SIZE*picolcdfb_var.bits_per_pixel);
+ fb_bitmap = vmalloc(PICOLCDFB_SIZE*8);
if (fb_bitmap == NULL) {
dev_err(dev, "can't get a free page for framebuffer\n");
goto err_nomem;
@@ -678,18 +789,29 @@ static int picolcd_init_framebuffer(struct picolcd_data *data)
data->fb_update_rate = PICOLCDFB_UPDATE_RATE_DEFAULT;
data->fb_defio = picolcd_fb_defio;
- info = framebuffer_alloc(0, dev);
+ /* The extra memory is:
+ * - struct picolcd_fb_cleanup_item
+ * - u32 for ref_count
+ * - 256*u32 for pseudo_palette
+ */
+ info = framebuffer_alloc(257 * sizeof(u32) + sizeof(struct picolcd_fb_cleanup_item), dev);
if (info == NULL) {
dev_err(dev, "failed to allocate a framebuffer\n");
goto err_nomem;
}
+ palette = info->par + sizeof(struct picolcd_fb_cleanup_item);
+ *palette = 1;
+ palette++;
+ for (i = 0; i < 256; i++)
+ palette[i] = i > 0 && i < 16 ? 0xff : 0;
+ info->pseudo_palette = palette;
info->fbdefio = &data->fb_defio;
info->screen_base = (char __force __iomem *)fb_bitmap;
info->fbops = &picolcdfb_ops;
info->var = picolcdfb_var;
info->fix = picolcdfb_fix;
- info->fix.smem_len = PICOLCDFB_SIZE;
+ info->fix.smem_len = PICOLCDFB_SIZE*8;
info->fix.smem_start = (unsigned long)fb_bitmap;
info->par = data;
info->flags = FBINFO_FLAG_DEFAULT;
@@ -707,18 +829,20 @@ static int picolcd_init_framebuffer(struct picolcd_data *data)
dev_err(dev, "failed to create sysfs attributes\n");
goto err_cleanup;
}
+ fb_deferred_io_init(info);
data->fb_info = info;
error = register_framebuffer(info);
if (error) {
dev_err(dev, "failed to register framebuffer\n");
goto err_sysfs;
}
- fb_deferred_io_init(info);
/* schedule first output of framebuffer */
+ data->fb_force = 1;
schedule_delayed_work(&info->deferred_work, 0);
return 0;
err_sysfs:
+ fb_deferred_io_cleanup(info);
device_remove_file(dev, &dev_attr_fb_update_rate);
err_cleanup:
data->fb_vbitmap = NULL;
@@ -737,19 +861,17 @@ static void picolcd_exit_framebuffer(struct picolcd_data *data)
{
struct fb_info *info = data->fb_info;
u8 *fb_vbitmap = data->fb_vbitmap;
- u8 *fb_bitmap = data->fb_bitmap;
if (!info)
return;
+ info->par = NULL;
+ device_remove_file(&data->hdev->dev, &dev_attr_fb_update_rate);
+ unregister_framebuffer(info);
data->fb_vbitmap = NULL;
data->fb_bitmap = NULL;
data->fb_bpp = 0;
data->fb_info = NULL;
- device_remove_file(&data->hdev->dev, &dev_attr_fb_update_rate);
- fb_deferred_io_cleanup(info);
- unregister_framebuffer(info);
- vfree(fb_bitmap);
kfree(fb_vbitmap);
}
@@ -2566,6 +2688,13 @@ static void picolcd_remove(struct hid_device *hdev)
spin_lock_irqsave(&data->lock, flags);
data->status |= PICOLCD_FAILED;
spin_unlock_irqrestore(&data->lock, flags);
+#ifdef CONFIG_HID_PICOLCD_FB
+ /* short-circuit FB as early as possible in order to
+ * avoid long delays if we host console.
+ */
+ if (data->fb_info)
+ data->fb_info->par = NULL;
+#endif
picolcd_exit_devfs(data);
device_remove_file(&hdev->dev, &dev_attr_operation_mode);
@@ -2623,6 +2752,10 @@ static int __init picolcd_init(void)
static void __exit picolcd_exit(void)
{
hid_unregister_driver(&picolcd_driver);
+#ifdef CONFIG_HID_PICOLCD_FB
+ flush_scheduled_work();
+ WARN_ON(fb_pending);
+#endif
}
module_init(picolcd_init);
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 3ccd4785067..47d70c523d9 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -46,7 +46,6 @@ static ssize_t hidraw_read(struct file *file, char __user *buffer, size_t count,
{
struct hidraw_list *list = file->private_data;
int ret = 0, len;
- char *report;
DECLARE_WAITQUEUE(wait, current);
mutex_lock(&list->read_mutex);
@@ -84,7 +83,6 @@ static ssize_t hidraw_read(struct file *file, char __user *buffer, size_t count,
if (ret)
goto out;
- report = list->buffer[list->tail].value;
len = list->buffer[list->tail].len > count ?
count : list->buffer[list->tail].len;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 16:48:18 +0000