82 static void lpc32xx_mod_states(struct lpc32xx_kscan_drv *kscandat, int col)  in lpc32xx_mod_states()  argument
84 	struct input_dev *input = kscandat->input;  in lpc32xx_mod_states()
88 	key = readl(LPC32XX_KS_DATA(kscandat->kscan_base, col));  in lpc32xx_mod_states()
89 	changed = key ^ kscandat->lastkeystates[col];  in lpc32xx_mod_states()
90 	kscandat->lastkeystates[col] = key;  in lpc32xx_mod_states()
96 						    kscandat->row_shift);  in lpc32xx_mod_states()
97 			keycode = kscandat->keymap[scancode];  in lpc32xx_mod_states()
106 	struct lpc32xx_kscan_drv *kscandat = dev_id;  in lpc32xx_kscan_irq()  local
109 	for (i = 0; i < kscandat->matrix_sz; i++)  in lpc32xx_kscan_irq()
110 		lpc32xx_mod_states(kscandat, i);  in lpc32xx_kscan_irq()
112 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_irq()
114 	input_sync(kscandat->input);  in lpc32xx_kscan_irq()
121 	struct lpc32xx_kscan_drv *kscandat = input_get_drvdata(dev);  in lpc32xx_kscan_open()  local
124 	error = clk_prepare_enable(kscandat->clk);  in lpc32xx_kscan_open()
128 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_open()
135 	struct lpc32xx_kscan_drv *kscandat = input_get_drvdata(dev);  in lpc32xx_kscan_close()  local
137 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_close()
138 	clk_disable_unprepare(kscandat->clk);  in lpc32xx_kscan_close()
142 				      struct lpc32xx_kscan_drv *kscandat)  in lpc32xx_parse_dt()  argument
156 	kscandat->matrix_sz = rows;  in lpc32xx_parse_dt()
157 	kscandat->row_shift = get_count_order(columns);  in lpc32xx_parse_dt()
159 	of_property_read_u32(np, "nxp,debounce-delay-ms", &kscandat->deb_clks);  in lpc32xx_parse_dt()
160 	of_property_read_u32(np, "nxp,scan-delay-ms", &kscandat->scan_delay);  in lpc32xx_parse_dt()
161 	if (!kscandat->deb_clks || !kscandat->scan_delay) {  in lpc32xx_parse_dt()
171 	struct lpc32xx_kscan_drv *kscandat;  in lpc32xx_kscan_probe()  local
190 	kscandat = devm_kzalloc(&pdev->dev, sizeof(*kscandat),  in lpc32xx_kscan_probe()
192 	if (!kscandat)  in lpc32xx_kscan_probe()
195 	error = lpc32xx_parse_dt(&pdev->dev, kscandat);  in lpc32xx_kscan_probe()
201 	keymap_size = sizeof(kscandat->keymap[0]) *  in lpc32xx_kscan_probe()
202 				(kscandat->matrix_sz << kscandat->row_shift);  in lpc32xx_kscan_probe()
203 	kscandat->keymap = devm_kzalloc(&pdev->dev, keymap_size, GFP_KERNEL);  in lpc32xx_kscan_probe()
204 	if (!kscandat->keymap)  in lpc32xx_kscan_probe()
207 	kscandat->input = input = devm_input_allocate_device(&pdev->dev);  in lpc32xx_kscan_probe()
226 					   kscandat->matrix_sz,  in lpc32xx_kscan_probe()
227 					   kscandat->matrix_sz,  in lpc32xx_kscan_probe()
228 					   kscandat->keymap, kscandat->input);  in lpc32xx_kscan_probe()
234 	input_set_drvdata(kscandat->input, kscandat);  in lpc32xx_kscan_probe()
236 	kscandat->kscan_base = devm_ioremap_resource(&pdev->dev, res);  in lpc32xx_kscan_probe()
237 	if (IS_ERR(kscandat->kscan_base))  in lpc32xx_kscan_probe()
238 		return PTR_ERR(kscandat->kscan_base);  in lpc32xx_kscan_probe()
241 	kscandat->clk = devm_clk_get(&pdev->dev, NULL);  in lpc32xx_kscan_probe()
242 	if (IS_ERR(kscandat->clk)) {  in lpc32xx_kscan_probe()
244 		return PTR_ERR(kscandat->clk);  in lpc32xx_kscan_probe()
248 	error = clk_prepare_enable(kscandat->clk);  in lpc32xx_kscan_probe()
252 	writel(kscandat->deb_clks, LPC32XX_KS_DEB(kscandat->kscan_base));  in lpc32xx_kscan_probe()
253 	writel(kscandat->scan_delay, LPC32XX_KS_SCAN_CTL(kscandat->kscan_base));  in lpc32xx_kscan_probe()
255 	       LPC32XX_KS_FAST_TST(kscandat->kscan_base));  in lpc32xx_kscan_probe()
256 	writel(kscandat->matrix_sz,  in lpc32xx_kscan_probe()
257 	       LPC32XX_KS_MATRIX_DIM(kscandat->kscan_base));  in lpc32xx_kscan_probe()
258 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_probe()
259 	clk_disable_unprepare(kscandat->clk);  in lpc32xx_kscan_probe()
262 				 pdev->name, kscandat);  in lpc32xx_kscan_probe()
268 	error = input_register_device(kscandat->input);  in lpc32xx_kscan_probe()
274 	platform_set_drvdata(pdev, kscandat);  in lpc32xx_kscan_probe()
283 	struct lpc32xx_kscan_drv *kscandat = platform_get_drvdata(pdev);  in lpc32xx_kscan_suspend()  local
284 	struct input_dev *input = kscandat->input;  in lpc32xx_kscan_suspend()
290 		writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_suspend()
291 		clk_disable_unprepare(kscandat->clk);  in lpc32xx_kscan_suspend()
301 	struct lpc32xx_kscan_drv *kscandat = platform_get_drvdata(pdev);  in lpc32xx_kscan_resume()  local
302 	struct input_dev *input = kscandat->input;  in lpc32xx_kscan_resume()
309 		retval = clk_prepare_enable(kscandat->clk);  in lpc32xx_kscan_resume()
311 			writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_resume()