input/keyboard/spear-keyboard.c

71 	struct spear_kbd *kbd = dev_id;
72 	struct input_dev *input = kbd->input;
76 	sts = readl_relaxed(kbd->io_base + STATUS_REG);
80 	if (kbd->last_key != KEY_RESERVED) {
81 		input_report_key(input, kbd->last_key, 0);
82 		kbd->last_key = KEY_RESERVED;
86 	val = readl_relaxed(kbd->io_base + DATA_REG) &
88 	key = kbd->keycodes[val];
94 	kbd->last_key = key;
97 	writel_relaxed(0, kbd->io_base + STATUS_REG);
104 	struct spear_kbd *kbd = input_get_drvdata(dev);
108 	kbd->last_key = KEY_RESERVED;
110 	error = clk_enable(kbd->clk);
115 	val = clk_get_rate(kbd->clk) / 1000000 - 1;
120 		(kbd->mode << MODE_CTL_KEYNUM_SHIFT);
121 	writel_relaxed(val, kbd->io_base + MODE_CTL_REG);
122 	writel_relaxed(1, kbd->io_base + STATUS_REG);
125 	val = readl_relaxed(kbd->io_base + MODE_CTL_REG);
127 	writel_relaxed(val, kbd->io_base + MODE_CTL_REG);
134 	struct spear_kbd *kbd = input_get_drvdata(dev);
138 	val = readl_relaxed(kbd->io_base + MODE_CTL_REG);
140 	writel_relaxed(val, kbd->io_base + MODE_CTL_REG);
142 	clk_disable(kbd->clk);
144 	kbd->last_key = KEY_RESERVED;
149                                         struct spear_kbd *kbd)
161 		kbd->rep = true;
164 		kbd->suspended_rate = suspended_rate;
172 	kbd->mode = val;
177 				     struct spear_kbd *kbd)
187 	struct spear_kbd *kbd;
196 	kbd = devm_kzalloc(&pdev->dev, sizeof(*kbd), GFP_KERNEL);
197 	if (!kbd) {
208 	kbd->input = input_dev;
209 	kbd->irq = irq;
212 		error = spear_kbd_parse_dt(pdev, kbd);
216 		kbd->mode = pdata->mode;
217 		kbd->rep = pdata->rep;
218 		kbd->suspended_rate = pdata->suspended_rate;
221 	kbd->io_base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
222 	if (IS_ERR(kbd->io_base))
223 		return PTR_ERR(kbd->io_base);
225 	kbd->clk = devm_clk_get(&pdev->dev, NULL);
226 	if (IS_ERR(kbd->clk))
227 		return PTR_ERR(kbd->clk);
239 					   kbd->keycodes, input_dev);
245 	if (kbd->rep)
249 	input_set_drvdata(input_dev, kbd);
252 			"keyboard", kbd);
258 	error = clk_prepare(kbd->clk);
265 		clk_unprepare(kbd->clk);
270 	platform_set_drvdata(pdev, kbd);
277 	struct spear_kbd *kbd = platform_get_drvdata(pdev);
279 	input_unregister_device(kbd->input);
280 	clk_unprepare(kbd->clk);
286 	struct spear_kbd *kbd = platform_get_drvdata(pdev);
287 	struct input_dev *input_dev = kbd->input;
293 	clk_enable(kbd->clk);
295 	mode_ctl_reg = readl_relaxed(kbd->io_base + MODE_CTL_REG);
298 		if (!enable_irq_wake(kbd->irq))
299 			kbd->irq_wake_enabled = true;
305 		if (kbd->suspended_rate)
306 			rate = kbd->suspended_rate / 1000000 - 1;
308 			rate = clk_get_rate(kbd->clk) / 1000000 - 1;
314 		writel_relaxed(val, kbd->io_base + MODE_CTL_REG);
319 					kbd->io_base + MODE_CTL_REG);
320 			clk_disable(kbd->clk);
326 		kbd->mode_ctl_reg = mode_ctl_reg;
329 	clk_disable(kbd->clk);
339 	struct spear_kbd *kbd = platform_get_drvdata(pdev);
340 	struct input_dev *input_dev = kbd->input;
345 		if (kbd->irq_wake_enabled) {
346 			kbd->irq_wake_enabled = false;
347 			disable_irq_wake(kbd->irq);
351 			clk_enable(kbd->clk);
356 		writel_relaxed(kbd->mode_ctl_reg, kbd->io_base + MODE_CTL_REG);
368 	{ .compatible = "st,spear300-kbd" },