Lines Matching full:keypad
8 * Keypad controller driver for the SKE (Scroll Key Encoder) module used in
22 #include <linux/platform_data/keypad-nomadik-ske.h>
44 /* keypad auto scan registers */
54 * struct ske_keypad - data structure used by keypad driver
58 * @board: keypad platform device
73 static void ske_keypad_set_bits(struct ske_keypad *keypad, u16 addr, in ske_keypad_set_bits() argument
78 spin_lock(&keypad->ske_keypad_lock); in ske_keypad_set_bits()
80 ret = readl(keypad->reg_base + addr); in ske_keypad_set_bits()
83 writel(ret, keypad->reg_base + addr); in ske_keypad_set_bits()
85 spin_unlock(&keypad->ske_keypad_lock); in ske_keypad_set_bits()
89 * ske_keypad_chip_init: init keypad controller configuration
93 static int __init ske_keypad_chip_init(struct ske_keypad *keypad) in ske_keypad_chip_init() argument
96 int timeout = keypad->board->debounce_ms; in ske_keypad_chip_init()
99 while ((readl(keypad->reg_base + SKE_RIS) != 0x00000000) && timeout--) in ske_keypad_chip_init()
107 * keypad dbounce is configured in DBCR[15:8] in ske_keypad_chip_init()
110 spin_lock(&keypad->ske_keypad_lock); in ske_keypad_chip_init()
111 value = readl(keypad->reg_base + SKE_DBCR); in ske_keypad_chip_init()
113 value |= ((keypad->board->debounce_ms * 32000)/32768) << 8; in ske_keypad_chip_init()
114 writel(value, keypad->reg_base + SKE_DBCR); in ske_keypad_chip_init()
115 spin_unlock(&keypad->ske_keypad_lock); in ske_keypad_chip_init()
118 ske_keypad_set_bits(keypad, SKE_CR, 0x0, SKE_KPMLT); in ske_keypad_chip_init()
122 * KPCN[5:3] defines no. of keypad columns to be auto scanned in ske_keypad_chip_init()
124 value = (keypad->board->kcol - 1) << 3; in ske_keypad_chip_init()
125 ske_keypad_set_bits(keypad, SKE_CR, SKE_KPCN, value); in ske_keypad_chip_init()
127 /* clear keypad interrupt for auto(and pending SW) scans */ in ske_keypad_chip_init()
128 ske_keypad_set_bits(keypad, SKE_ICR, 0x0, SKE_KPICA | SKE_KPICS); in ske_keypad_chip_init()
130 /* un-mask keypad interrupts */ in ske_keypad_chip_init()
131 ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA); in ske_keypad_chip_init()
134 ske_keypad_set_bits(keypad, SKE_CR, 0x0, SKE_KPASEN); in ske_keypad_chip_init()
139 static void ske_keypad_report(struct ske_keypad *keypad, u8 status, int col) in ske_keypad_report() argument
142 struct input_dev *input = keypad->input; in ske_keypad_report()
155 ske_ris = readl(keypad->reg_base + SKE_RIS); in ske_keypad_report()
159 input_report_key(input, keypad->keymap[code], key_pressed); in ske_keypad_report()
165 static void ske_keypad_read_data(struct ske_keypad *keypad) in ske_keypad_read_data() argument
179 ske_asr = readl(keypad->reg_base + SKE_ASR0 + (4 * i)); in ske_keypad_read_data()
187 ske_keypad_report(keypad, status, col); in ske_keypad_read_data()
192 ske_keypad_report(keypad, status, col); in ske_keypad_read_data()
199 struct ske_keypad *keypad = dev_id; in ske_keypad_irq() local
200 int timeout = keypad->board->debounce_ms; in ske_keypad_irq()
203 ske_keypad_set_bits(keypad, SKE_IMSC, ~SKE_KPIMA, 0x0); in ske_keypad_irq()
204 ske_keypad_set_bits(keypad, SKE_ICR, 0x0, SKE_KPICA); in ske_keypad_irq()
206 while ((readl(keypad->reg_base + SKE_CR) & SKE_KPASON) && --timeout) in ske_keypad_irq()
210 ske_keypad_read_data(keypad); in ske_keypad_irq()
213 while ((readl(keypad->reg_base + SKE_RIS)) && --timeout) in ske_keypad_irq()
217 ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA); in ske_keypad_irq()
226 struct ske_keypad *keypad; in ske_keypad_probe() local
233 dev_err(&pdev->dev, "invalid keypad platform data\n"); in ske_keypad_probe()
247 keypad = kzalloc(sizeof(struct ske_keypad), GFP_KERNEL); in ske_keypad_probe()
249 if (!keypad || !input) { in ske_keypad_probe()
250 dev_err(&pdev->dev, "failed to allocate keypad memory\n"); in ske_keypad_probe()
255 keypad->irq = irq; in ske_keypad_probe()
256 keypad->board = plat; in ske_keypad_probe()
257 keypad->input = input; in ske_keypad_probe()
258 spin_lock_init(&keypad->ske_keypad_lock); in ske_keypad_probe()
266 keypad->reg_base = ioremap(res->start, resource_size(res)); in ske_keypad_probe()
267 if (!keypad->reg_base) { in ske_keypad_probe()
273 keypad->pclk = clk_get(&pdev->dev, "apb_pclk"); in ske_keypad_probe()
274 if (IS_ERR(keypad->pclk)) { in ske_keypad_probe()
276 error = PTR_ERR(keypad->pclk); in ske_keypad_probe()
280 keypad->clk = clk_get(&pdev->dev, NULL); in ske_keypad_probe()
281 if (IS_ERR(keypad->clk)) { in ske_keypad_probe()
283 error = PTR_ERR(keypad->clk); in ske_keypad_probe()
288 input->name = "ux500-ske-keypad"; in ske_keypad_probe()
293 keypad->keymap, input); in ske_keypad_probe()
303 error = clk_prepare_enable(keypad->pclk); in ske_keypad_probe()
309 error = clk_prepare_enable(keypad->clk); in ske_keypad_probe()
317 if (keypad->board->init) in ske_keypad_probe()
318 keypad->board->init(); in ske_keypad_probe()
320 error = ske_keypad_chip_init(keypad); in ske_keypad_probe()
322 dev_err(&pdev->dev, "unable to init keypad hardware\n"); in ske_keypad_probe()
326 error = request_threaded_irq(keypad->irq, NULL, ske_keypad_irq, in ske_keypad_probe()
327 IRQF_ONESHOT, "ske-keypad", keypad); in ske_keypad_probe()
329 dev_err(&pdev->dev, "allocate irq %d failed\n", keypad->irq); in ske_keypad_probe()
343 platform_set_drvdata(pdev, keypad); in ske_keypad_probe()
348 free_irq(keypad->irq, keypad); in ske_keypad_probe()
350 clk_disable_unprepare(keypad->clk); in ske_keypad_probe()
352 clk_disable_unprepare(keypad->pclk); in ske_keypad_probe()
354 clk_put(keypad->clk); in ske_keypad_probe()
356 clk_put(keypad->pclk); in ske_keypad_probe()
358 iounmap(keypad->reg_base); in ske_keypad_probe()
363 kfree(keypad); in ske_keypad_probe()
369 struct ske_keypad *keypad = platform_get_drvdata(pdev); in ske_keypad_remove() local
372 free_irq(keypad->irq, keypad); in ske_keypad_remove()
374 input_unregister_device(keypad->input); in ske_keypad_remove()
376 clk_disable_unprepare(keypad->clk); in ske_keypad_remove()
377 clk_put(keypad->clk); in ske_keypad_remove()
379 if (keypad->board->exit) in ske_keypad_remove()
380 keypad->board->exit(); in ske_keypad_remove()
382 iounmap(keypad->reg_base); in ske_keypad_remove()
384 kfree(keypad); in ske_keypad_remove()
393 struct ske_keypad *keypad = platform_get_drvdata(pdev); in ske_keypad_suspend() local
399 ske_keypad_set_bits(keypad, SKE_IMSC, ~SKE_KPIMA, 0x0); in ske_keypad_suspend()
407 struct ske_keypad *keypad = platform_get_drvdata(pdev); in ske_keypad_resume() local
413 ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA); in ske_keypad_resume()
424 .name = "nmk-ske-keypad",
434 MODULE_DESCRIPTION("Nomadik Scroll-Key-Encoder Keypad Driver");
435 MODULE_ALIAS("platform:nomadik-ske-keypad");