71 static void lpc32xx_fifo_clear(struct lpc32xx_tsc *tsc)  in lpc32xx_fifo_clear()  argument
73 	while (!(tsc_readl(tsc, LPC32XX_TSC_STAT) &  in lpc32xx_fifo_clear()
75 		tsc_readl(tsc, LPC32XX_TSC_FIFO);  in lpc32xx_fifo_clear()
82 	struct lpc32xx_tsc *tsc = dev_id;  in lpc32xx_ts_interrupt()  local
83 	struct input_dev *input = tsc->dev;  in lpc32xx_ts_interrupt()
85 	tmp = tsc_readl(tsc, LPC32XX_TSC_STAT);  in lpc32xx_ts_interrupt()
89 		lpc32xx_fifo_clear(tsc);  in lpc32xx_ts_interrupt()
100 	       !(tsc_readl(tsc, LPC32XX_TSC_STAT) &  in lpc32xx_ts_interrupt()
102 		tmp = tsc_readl(tsc, LPC32XX_TSC_FIFO);  in lpc32xx_ts_interrupt()
126 static void lpc32xx_stop_tsc(struct lpc32xx_tsc *tsc)  in lpc32xx_stop_tsc()  argument
129 	tsc_writel(tsc, LPC32XX_TSC_CON,  in lpc32xx_stop_tsc()
130 		   tsc_readl(tsc, LPC32XX_TSC_CON) &  in lpc32xx_stop_tsc()
133 	clk_disable_unprepare(tsc->clk);  in lpc32xx_stop_tsc()
136 static int lpc32xx_setup_tsc(struct lpc32xx_tsc *tsc)  in lpc32xx_setup_tsc()  argument
141 	err = clk_prepare_enable(tsc->clk);  in lpc32xx_setup_tsc()
145 	tmp = tsc_readl(tsc, LPC32XX_TSC_CON) & ~LPC32XX_TSC_ADCCON_POWER_UP;  in lpc32xx_setup_tsc()
147 	/* Set the TSC FIFO depth to 4 samples @ 10-bits per sample (max) */  in lpc32xx_setup_tsc()
151 	tsc_writel(tsc, LPC32XX_TSC_CON, tmp);  in lpc32xx_setup_tsc()
154 	tsc_writel(tsc, LPC32XX_TSC_SEL, LPC32XX_TSC_SEL_DEFVAL);  in lpc32xx_setup_tsc()
155 	tsc_writel(tsc, LPC32XX_TSC_MIN_X, LPC32XX_TSC_MIN_XY_VAL);  in lpc32xx_setup_tsc()
156 	tsc_writel(tsc, LPC32XX_TSC_MAX_X, LPC32XX_TSC_MAX_XY_VAL);  in lpc32xx_setup_tsc()
157 	tsc_writel(tsc, LPC32XX_TSC_MIN_Y, LPC32XX_TSC_MIN_XY_VAL);  in lpc32xx_setup_tsc()
158 	tsc_writel(tsc, LPC32XX_TSC_MAX_Y, LPC32XX_TSC_MAX_XY_VAL);  in lpc32xx_setup_tsc()
161 	tsc_writel(tsc, LPC32XX_TSC_AUX_UTR, 0);  in lpc32xx_setup_tsc()
162 	tsc_writel(tsc, LPC32XX_TSC_AUX_MIN, 0);  in lpc32xx_setup_tsc()
163 	tsc_writel(tsc, LPC32XX_TSC_AUX_MAX, 0);  in lpc32xx_setup_tsc()
171 	tsc_writel(tsc, LPC32XX_TSC_RTR, 0x2);  in lpc32xx_setup_tsc()
172 	tsc_writel(tsc, LPC32XX_TSC_DTR, 0x2);  in lpc32xx_setup_tsc()
173 	tsc_writel(tsc, LPC32XX_TSC_TTR, 0x10);  in lpc32xx_setup_tsc()
174 	tsc_writel(tsc, LPC32XX_TSC_DXP, 0x4);  in lpc32xx_setup_tsc()
175 	tsc_writel(tsc, LPC32XX_TSC_UTR, 88);  in lpc32xx_setup_tsc()
177 	lpc32xx_fifo_clear(tsc);  in lpc32xx_setup_tsc()
180 	tsc_writel(tsc, LPC32XX_TSC_CON, tmp | LPC32XX_TSC_ADCCON_AUTO_EN);  in lpc32xx_setup_tsc()
187 	struct lpc32xx_tsc *tsc = input_get_drvdata(dev);  in lpc32xx_ts_open()  local
189 	return lpc32xx_setup_tsc(tsc);  in lpc32xx_ts_open()
194 	struct lpc32xx_tsc *tsc = input_get_drvdata(dev);  in lpc32xx_ts_close()  local
196 	lpc32xx_stop_tsc(tsc);  in lpc32xx_ts_close()
201 	struct lpc32xx_tsc *tsc;  in lpc32xx_ts_probe()  local
218 	tsc = kzalloc(sizeof(*tsc), GFP_KERNEL);  in lpc32xx_ts_probe()
220 	if (!tsc || !input) {  in lpc32xx_ts_probe()
226 	tsc->dev = input;  in lpc32xx_ts_probe()
227 	tsc->irq = irq;  in lpc32xx_ts_probe()
232 		dev_err(&pdev->dev, "TSC registers are not free\n");  in lpc32xx_ts_probe()
237 	tsc->tsc_base = ioremap(res->start, size);  in lpc32xx_ts_probe()
238 	if (!tsc->tsc_base) {  in lpc32xx_ts_probe()
244 	tsc->clk = clk_get(&pdev->dev, NULL);  in lpc32xx_ts_probe()
245 	if (IS_ERR(tsc->clk)) {  in lpc32xx_ts_probe()
247 		error = PTR_ERR(tsc->clk);  in lpc32xx_ts_probe()
268 	input_set_drvdata(input, tsc);  in lpc32xx_ts_probe()
270 	error = request_irq(tsc->irq, lpc32xx_ts_interrupt,  in lpc32xx_ts_probe()
271 			    0, pdev->name, tsc);  in lpc32xx_ts_probe()
283 	platform_set_drvdata(pdev, tsc);  in lpc32xx_ts_probe()
289 	free_irq(tsc->irq, tsc);  in lpc32xx_ts_probe()
291 	clk_put(tsc->clk);  in lpc32xx_ts_probe()
293 	iounmap(tsc->tsc_base);  in lpc32xx_ts_probe()
298 	kfree(tsc);  in lpc32xx_ts_probe()
305 	struct lpc32xx_tsc *tsc = platform_get_drvdata(pdev);  in lpc32xx_ts_remove()  local
308 	free_irq(tsc->irq, tsc);  in lpc32xx_ts_remove()
310 	input_unregister_device(tsc->dev);  in lpc32xx_ts_remove()
312 	clk_put(tsc->clk);  in lpc32xx_ts_remove()
314 	iounmap(tsc->tsc_base);  in lpc32xx_ts_remove()
318 	kfree(tsc);  in lpc32xx_ts_remove()
326 	struct lpc32xx_tsc *tsc = dev_get_drvdata(dev);  in lpc32xx_ts_suspend()  local
327 	struct input_dev *input = tsc->dev;  in lpc32xx_ts_suspend()
332 	 * avoid calling the TSC stop and start functions as the TSC  in lpc32xx_ts_suspend()
339 			enable_irq_wake(tsc->irq);  in lpc32xx_ts_suspend()
341 			lpc32xx_stop_tsc(tsc);  in lpc32xx_ts_suspend()
351 	struct lpc32xx_tsc *tsc = dev_get_drvdata(dev);  in lpc32xx_ts_resume()  local
352 	struct input_dev *input = tsc->dev;  in lpc32xx_ts_resume()
358 			disable_irq_wake(tsc->irq);  in lpc32xx_ts_resume()
360 			lpc32xx_setup_tsc(tsc);  in lpc32xx_ts_resume()
379 	{ .compatible = "nxp,lpc3220-tsc", },
397 MODULE_DESCRIPTION("LPC32XX TSC Driver");