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| 1 | +// SPDX-License-Identifier: GPL-2.0-or-later |
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1 | 2 | /* |
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2 | 3 | * Focaltech TouchPad PS/2 mouse driver |
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3 | 4 | * |
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4 | 5 | * Copyright (c) 2014 Red Hat Inc. |
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5 | 6 | * Copyright (c) 2014 Mathias Gottschlag <mgottschlag@gmail.com> |
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6 | | - * |
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7 | | - * This program is free software; you can redistribute it and/or modify |
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8 | | - * it under the terms of the GNU General Public License as published by |
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9 | | - * the Free Software Foundation; either version 2 of the License, or |
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10 | | - * (at your option) any later version. |
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11 | 7 | * |
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12 | 8 | * Red Hat authors: |
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13 | 9 | * |
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.. | .. |
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206 | 202 | state->pressed = packet[0] >> 7; |
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207 | 203 | finger1 = ((packet[0] >> 4) & 0x7) - 1; |
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208 | 204 | if (finger1 < FOC_MAX_FINGERS) { |
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209 | | - state->fingers[finger1].x += (char)packet[1]; |
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210 | | - state->fingers[finger1].y += (char)packet[2]; |
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| 205 | + state->fingers[finger1].x += (s8)packet[1]; |
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| 206 | + state->fingers[finger1].y += (s8)packet[2]; |
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211 | 207 | } else { |
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212 | 208 | psmouse_err(psmouse, "First finger in rel packet invalid: %d\n", |
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213 | 209 | finger1); |
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.. | .. |
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222 | 218 | */ |
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223 | 219 | finger2 = ((packet[3] >> 4) & 0x7) - 1; |
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224 | 220 | if (finger2 < FOC_MAX_FINGERS) { |
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225 | | - state->fingers[finger2].x += (char)packet[4]; |
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226 | | - state->fingers[finger2].y += (char)packet[5]; |
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| 221 | + state->fingers[finger2].x += (s8)packet[4]; |
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| 222 | + state->fingers[finger2].y += (s8)packet[5]; |
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227 | 223 | } |
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228 | 224 | } |
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229 | 225 | |
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