71 static void lpc32xx_mod_states(struct lpc32xx_kscan_drv *kscandat, int col)  in lpc32xx_mod_states()  argument
73 	struct input_dev *input = kscandat->input;  in lpc32xx_mod_states()
77 	key = readl(LPC32XX_KS_DATA(kscandat->kscan_base, col));  in lpc32xx_mod_states()
78 	changed = key ^ kscandat->lastkeystates[col];  in lpc32xx_mod_states()
79 	kscandat->lastkeystates[col] = key;  in lpc32xx_mod_states()
85 						    kscandat->row_shift);  in lpc32xx_mod_states()
86 			keycode = kscandat->keymap[scancode];  in lpc32xx_mod_states()
95 	struct lpc32xx_kscan_drv *kscandat = dev_id;  in lpc32xx_kscan_irq()  local
98 	for (i = 0; i < kscandat->matrix_sz; i++)  in lpc32xx_kscan_irq()
99 		lpc32xx_mod_states(kscandat, i);  in lpc32xx_kscan_irq()
101 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_irq()
103 	input_sync(kscandat->input);  in lpc32xx_kscan_irq()
110 	struct lpc32xx_kscan_drv *kscandat = input_get_drvdata(dev);  in lpc32xx_kscan_open()  local
113 	error = clk_prepare_enable(kscandat->clk);  in lpc32xx_kscan_open()
117 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_open()
124 	struct lpc32xx_kscan_drv *kscandat = input_get_drvdata(dev);  in lpc32xx_kscan_close()  local
126 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_close()
127 	clk_disable_unprepare(kscandat->clk);  in lpc32xx_kscan_close()
131 				      struct lpc32xx_kscan_drv *kscandat)  in lpc32xx_parse_dt()  argument
145 	kscandat->matrix_sz = rows;  in lpc32xx_parse_dt()
146 	kscandat->row_shift = get_count_order(columns);  in lpc32xx_parse_dt()
148 	of_property_read_u32(np, "nxp,debounce-delay-ms", &kscandat->deb_clks);  in lpc32xx_parse_dt()
149 	of_property_read_u32(np, "nxp,scan-delay-ms", &kscandat->scan_delay);  in lpc32xx_parse_dt()
150 	if (!kscandat->deb_clks || !kscandat->scan_delay) {  in lpc32xx_parse_dt()
160 	struct lpc32xx_kscan_drv *kscandat;  in lpc32xx_kscan_probe()  local
170 	kscandat = devm_kzalloc(&pdev->dev, sizeof(*kscandat),  in lpc32xx_kscan_probe()
172 	if (!kscandat)  in lpc32xx_kscan_probe()
175 	error = lpc32xx_parse_dt(&pdev->dev, kscandat);  in lpc32xx_kscan_probe()
181 	keymap_size = sizeof(kscandat->keymap[0]) *  in lpc32xx_kscan_probe()
182 				(kscandat->matrix_sz << kscandat->row_shift);  in lpc32xx_kscan_probe()
183 	kscandat->keymap = devm_kzalloc(&pdev->dev, keymap_size, GFP_KERNEL);  in lpc32xx_kscan_probe()
184 	if (!kscandat->keymap)  in lpc32xx_kscan_probe()
187 	kscandat->input = input = devm_input_allocate_device(&pdev->dev);  in lpc32xx_kscan_probe()
206 					   kscandat->matrix_sz,  in lpc32xx_kscan_probe()
207 					   kscandat->matrix_sz,  in lpc32xx_kscan_probe()
208 					   kscandat->keymap, kscandat->input);  in lpc32xx_kscan_probe()
214 	input_set_drvdata(kscandat->input, kscandat);  in lpc32xx_kscan_probe()
216 	kscandat->kscan_base = devm_platform_ioremap_resource(pdev, 0);  in lpc32xx_kscan_probe()
217 	if (IS_ERR(kscandat->kscan_base))  in lpc32xx_kscan_probe()
218 		return PTR_ERR(kscandat->kscan_base);  in lpc32xx_kscan_probe()
221 	kscandat->clk = devm_clk_get(&pdev->dev, NULL);  in lpc32xx_kscan_probe()
222 	if (IS_ERR(kscandat->clk)) {  in lpc32xx_kscan_probe()
224 		return PTR_ERR(kscandat->clk);  in lpc32xx_kscan_probe()
228 	error = clk_prepare_enable(kscandat->clk);  in lpc32xx_kscan_probe()
232 	writel(kscandat->deb_clks, LPC32XX_KS_DEB(kscandat->kscan_base));  in lpc32xx_kscan_probe()
233 	writel(kscandat->scan_delay, LPC32XX_KS_SCAN_CTL(kscandat->kscan_base));  in lpc32xx_kscan_probe()
235 	       LPC32XX_KS_FAST_TST(kscandat->kscan_base));  in lpc32xx_kscan_probe()
236 	writel(kscandat->matrix_sz,  in lpc32xx_kscan_probe()
237 	       LPC32XX_KS_MATRIX_DIM(kscandat->kscan_base));  in lpc32xx_kscan_probe()
238 	writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_probe()
239 	clk_disable_unprepare(kscandat->clk);  in lpc32xx_kscan_probe()
242 				 pdev->name, kscandat);  in lpc32xx_kscan_probe()
248 	error = input_register_device(kscandat->input);  in lpc32xx_kscan_probe()
254 	platform_set_drvdata(pdev, kscandat);  in lpc32xx_kscan_probe()
262 	struct lpc32xx_kscan_drv *kscandat = platform_get_drvdata(pdev);  in lpc32xx_kscan_suspend()  local
263 	struct input_dev *input = kscandat->input;  in lpc32xx_kscan_suspend()
269 		writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_suspend()
270 		clk_disable_unprepare(kscandat->clk);  in lpc32xx_kscan_suspend()
280 	struct lpc32xx_kscan_drv *kscandat = platform_get_drvdata(pdev);  in lpc32xx_kscan_resume()  local
281 	struct input_dev *input = kscandat->input;  in lpc32xx_kscan_resume()
288 		retval = clk_prepare_enable(kscandat->clk);  in lpc32xx_kscan_resume()
290 			writel(1, LPC32XX_KS_IRQ(kscandat->kscan_base));  in lpc32xx_kscan_resume()