95 struct psif {  struct
108 	struct psif *psif = _ptr;  in psif_interrupt()  argument
113 	status = psif_readl(psif, SR);  in psif_interrupt()
116 		unsigned char val = (unsigned char) psif_readl(psif, RHR);  in psif_interrupt()
121 			dev_err(&psif->pdev->dev, "overrun read error\n");  in psif_interrupt()
123 		serio_interrupt(psif->io, val, io_flags);  in psif_interrupt()
133 	struct psif *psif = io->port_data;  in psif_write()  local
138 	spin_lock_irqsave(&psif->lock, flags);  in psif_write()
140 	while (!(psif_readl(psif, SR) & PSIF_BIT(TXEMPTY)) && timeout--)  in psif_write()
144 		psif_writel(psif, THR, val);  in psif_write()
146 		dev_dbg(&psif->pdev->dev, "timeout writing to THR\n");  in psif_write()
150 	spin_unlock_irqrestore(&psif->lock, flags);  in psif_write()
157 	struct psif *psif = io->port_data;  in psif_open()  local
160 	retval = clk_enable(psif->pclk);  in psif_open()
164 	psif_writel(psif, CR, PSIF_BIT(CR_TXEN) | PSIF_BIT(CR_RXEN));  in psif_open()
165 	psif_writel(psif, IER, PSIF_BIT(RXRDY));  in psif_open()
167 	psif->open = true;  in psif_open()
174 	struct psif *psif = io->port_data;  in psif_close()  local
176 	psif->open = false;  in psif_close()
178 	psif_writel(psif, IDR, ~0UL);  in psif_close()
179 	psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS));  in psif_close()
181 	clk_disable(psif->pclk);  in psif_close()
184 static void psif_set_prescaler(struct psif *psif)  in psif_set_prescaler()  argument
187 	unsigned long rate = clk_get_rate(psif->pclk);  in psif_set_prescaler()
194 		dev_dbg(&psif->pdev->dev, "pclk too fast, "  in psif_set_prescaler()
198 	clk_enable(psif->pclk);  in psif_set_prescaler()
199 	psif_writel(psif, PSR, prscv);  in psif_set_prescaler()
200 	clk_disable(psif->pclk);  in psif_set_prescaler()
206 	struct psif *psif;  in psif_probe()  local
212 	psif = kzalloc(sizeof(struct psif), GFP_KERNEL);  in psif_probe()
213 	if (!psif) {  in psif_probe()
218 	psif->pdev = pdev;  in psif_probe()
226 	psif->io = io;  in psif_probe()
235 	psif->regs = ioremap(regs->start, resource_size(regs));  in psif_probe()
236 	if (!psif->regs) {  in psif_probe()
248 	psif->pclk = pclk;  in psif_probe()
256 	psif_writel(psif, CR, PSIF_BIT(CR_SWRST));  in psif_probe()
265 	ret = request_irq(irq, psif_interrupt, IRQF_SHARED, "at32psif", psif);  in psif_probe()
270 	psif->irq = irq;  in psif_probe()
278 	io->port_data	= psif;  in psif_probe()
281 	psif_set_prescaler(psif);  in psif_probe()
283 	spin_lock_init(&psif->lock);  in psif_probe()
284 	serio_register_port(psif->io);  in psif_probe()
285 	platform_set_drvdata(pdev, psif);  in psif_probe()
288 			(int)psif->regs, psif->irq);  in psif_probe()
293 	clk_put(psif->pclk);  in psif_probe()
295 	iounmap(psif->regs);  in psif_probe()
299 	kfree(psif);  in psif_probe()
306 	struct psif *psif = platform_get_drvdata(pdev);  in psif_remove()  local
308 	psif_writel(psif, IDR, ~0UL);  in psif_remove()
309 	psif_writel(psif, CR, PSIF_BIT(CR_TXDIS) | PSIF_BIT(CR_RXDIS));  in psif_remove()
311 	serio_unregister_port(psif->io);  in psif_remove()
312 	iounmap(psif->regs);  in psif_remove()
313 	free_irq(psif->irq, psif);  in psif_remove()
314 	clk_put(psif->pclk);  in psif_remove()
315 	kfree(psif);  in psif_remove()
324 	struct psif *psif = platform_get_drvdata(pdev);  in psif_suspend()  local
326 	if (psif->open) {  in psif_suspend()
327 		psif_writel(psif, CR, PSIF_BIT(CR_RXDIS) | PSIF_BIT(CR_TXDIS));  in psif_suspend()
328 		clk_disable(psif->pclk);  in psif_suspend()
337 	struct psif *psif = platform_get_drvdata(pdev);  in psif_resume()  local
339 	if (psif->open) {  in psif_resume()
340 		clk_enable(psif->pclk);  in psif_resume()
341 		psif_set_prescaler(psif);  in psif_resume()
342 		psif_writel(psif, CR, PSIF_BIT(CR_RXEN) | PSIF_BIT(CR_TXEN));  in psif_resume()