144 static void intel_lpss_cache_ltr(struct intel_lpss *lpss)  in intel_lpss_cache_ltr()  argument
146 	lpss->active_ltr = readl(lpss->priv + LPSS_PRIV_ACTIVELTR);  in intel_lpss_cache_ltr()
147 	lpss->idle_ltr = readl(lpss->priv + LPSS_PRIV_IDLELTR);  in intel_lpss_cache_ltr()
150 static int intel_lpss_debugfs_add(struct intel_lpss *lpss)  in intel_lpss_debugfs_add()  argument
154 	dir = debugfs_create_dir(dev_name(lpss->dev), intel_lpss_debugfs);  in intel_lpss_debugfs_add()
159 	intel_lpss_cache_ltr(lpss);  in intel_lpss_debugfs_add()
161 	debugfs_create_x32("capabilities", S_IRUGO, dir, &lpss->caps);  in intel_lpss_debugfs_add()
162 	debugfs_create_x32("active_ltr", S_IRUGO, dir, &lpss->active_ltr);  in intel_lpss_debugfs_add()
163 	debugfs_create_x32("idle_ltr", S_IRUGO, dir, &lpss->idle_ltr);  in intel_lpss_debugfs_add()
165 	lpss->debugfs = dir;  in intel_lpss_debugfs_add()
169 static void intel_lpss_debugfs_remove(struct intel_lpss *lpss)  in intel_lpss_debugfs_remove()  argument
171 	debugfs_remove_recursive(lpss->debugfs);  in intel_lpss_debugfs_remove()
176 	struct intel_lpss *lpss = dev_get_drvdata(dev);  in intel_lpss_ltr_set()  local
184 	ltr = readl(lpss->priv + LPSS_PRIV_ACTIVELTR);  in intel_lpss_ltr_set()
199 	if (ltr == lpss->active_ltr)  in intel_lpss_ltr_set()
202 	writel(ltr, lpss->priv + LPSS_PRIV_ACTIVELTR);  in intel_lpss_ltr_set()
203 	writel(ltr, lpss->priv + LPSS_PRIV_IDLELTR);  in intel_lpss_ltr_set()
206 	intel_lpss_cache_ltr(lpss);  in intel_lpss_ltr_set()
209 static void intel_lpss_ltr_expose(struct intel_lpss *lpss)  in intel_lpss_ltr_expose()  argument
211 	lpss->dev->power.set_latency_tolerance = intel_lpss_ltr_set;  in intel_lpss_ltr_expose()
212 	dev_pm_qos_expose_latency_tolerance(lpss->dev);  in intel_lpss_ltr_expose()
215 static void intel_lpss_ltr_hide(struct intel_lpss *lpss)  in intel_lpss_ltr_hide()  argument
217 	dev_pm_qos_hide_latency_tolerance(lpss->dev);  in intel_lpss_ltr_hide()
218 	lpss->dev->power.set_latency_tolerance = NULL;  in intel_lpss_ltr_hide()
221 static int intel_lpss_assign_devs(struct intel_lpss *lpss)  in intel_lpss_assign_devs()  argument
226 	type = lpss->caps & LPSS_PRIV_CAPS_TYPE_MASK;  in intel_lpss_assign_devs()
243 	lpss->cell = devm_kmemdup(lpss->dev, cell, sizeof(*cell), GFP_KERNEL);  in intel_lpss_assign_devs()
244 	if (!lpss->cell)  in intel_lpss_assign_devs()
247 	lpss->type = type;  in intel_lpss_assign_devs()
252 static bool intel_lpss_has_idma(const struct intel_lpss *lpss)  in intel_lpss_has_idma()  argument
254 	return (lpss->caps & LPSS_PRIV_CAPS_NO_IDMA) == 0;  in intel_lpss_has_idma()
257 static void intel_lpss_set_remap_addr(const struct intel_lpss *lpss)  in intel_lpss_set_remap_addr()  argument
259 	resource_size_t addr = lpss->info->mem->start;  in intel_lpss_set_remap_addr()
261 	lo_hi_writeq(addr, lpss->priv + LPSS_PRIV_REMAP_ADDR);  in intel_lpss_set_remap_addr()
264 static void intel_lpss_deassert_reset(const struct intel_lpss *lpss)  in intel_lpss_deassert_reset()  argument
269 	writel(value, lpss->priv + LPSS_PRIV_RESETS);  in intel_lpss_deassert_reset()
272 static void intel_lpss_init_dev(const struct intel_lpss *lpss)  in intel_lpss_init_dev()  argument
276 	intel_lpss_deassert_reset(lpss);  in intel_lpss_init_dev()
278 	intel_lpss_set_remap_addr(lpss);  in intel_lpss_init_dev()
280 	if (!intel_lpss_has_idma(lpss))  in intel_lpss_init_dev()
284 	if (lpss->type == LPSS_DEV_SPI)  in intel_lpss_init_dev()
285 		writel(value, lpss->priv + LPSS_PRIV_SSP_REG);  in intel_lpss_init_dev()
299 static int intel_lpss_register_clock_divider(struct intel_lpss *lpss,  in intel_lpss_register_clock_divider()  argument
308 				lpss->priv, 0, 0, NULL);  in intel_lpss_register_clock_divider()
314 					      0, lpss->priv, 1, 15, 16, 15, 0,  in intel_lpss_register_clock_divider()
322 				CLK_SET_RATE_PARENT, lpss->priv, 31, 0, NULL);  in intel_lpss_register_clock_divider()
330 static int intel_lpss_register_clock(struct intel_lpss *lpss)  in intel_lpss_register_clock()  argument
332 	const struct mfd_cell *cell = lpss->cell;  in intel_lpss_register_clock()
337 	if (!lpss->info->clk_rate)  in intel_lpss_register_clock()
341 	clk = clk_register_fixed_rate(NULL, dev_name(lpss->dev), NULL, 0,  in intel_lpss_register_clock()
342 				      lpss->info->clk_rate);  in intel_lpss_register_clock()
346 	snprintf(devname, sizeof(devname), "%s.%d", cell->name, lpss->devid);  in intel_lpss_register_clock()
352 	if (lpss->type != LPSS_DEV_I2C) {  in intel_lpss_register_clock()
353 		ret = intel_lpss_register_clock_divider(lpss, devname, &clk);  in intel_lpss_register_clock()
361 	lpss->clock = clkdev_create(clk, lpss->info->clk_con_id, "%s", devname);  in intel_lpss_register_clock()
362 	if (!lpss->clock)  in intel_lpss_register_clock()
365 	lpss->clk = clk;  in intel_lpss_register_clock()
375 static void intel_lpss_unregister_clock(struct intel_lpss *lpss)  in intel_lpss_unregister_clock()  argument
377 	if (IS_ERR_OR_NULL(lpss->clk))  in intel_lpss_unregister_clock()
380 	clkdev_drop(lpss->clock);  in intel_lpss_unregister_clock()
381 	intel_lpss_unregister_clock_tree(lpss->clk);  in intel_lpss_unregister_clock()
387 	struct intel_lpss *lpss;  in intel_lpss_probe()  local
393 	lpss = devm_kzalloc(dev, sizeof(*lpss), GFP_KERNEL);  in intel_lpss_probe()
394 	if (!lpss)  in intel_lpss_probe()
397 	lpss->priv = devm_ioremap(dev, info->mem->start + LPSS_PRIV_OFFSET,  in intel_lpss_probe()
399 	if (!lpss->priv)  in intel_lpss_probe()
402 	lpss->info = info;  in intel_lpss_probe()
403 	lpss->dev = dev;  in intel_lpss_probe()
404 	lpss->caps = readl(lpss->priv + LPSS_PRIV_CAPS);  in intel_lpss_probe()
406 	dev_set_drvdata(dev, lpss);  in intel_lpss_probe()
408 	ret = intel_lpss_assign_devs(lpss);  in intel_lpss_probe()
412 	lpss->cell->properties = info->properties;  in intel_lpss_probe()
414 	intel_lpss_init_dev(lpss);  in intel_lpss_probe()
416 	lpss->devid = ida_simple_get(&intel_lpss_devid_ida, 0, 0, GFP_KERNEL);  in intel_lpss_probe()
417 	if (lpss->devid < 0)  in intel_lpss_probe()
418 		return lpss->devid;  in intel_lpss_probe()
420 	ret = intel_lpss_register_clock(lpss);  in intel_lpss_probe()
424 	intel_lpss_ltr_expose(lpss);  in intel_lpss_probe()
426 	ret = intel_lpss_debugfs_add(lpss);  in intel_lpss_probe()
430 	if (intel_lpss_has_idma(lpss)) {  in intel_lpss_probe()
441 		ret = mfd_add_devices(dev, lpss->devid, &intel_lpss_idma64_cell,  in intel_lpss_probe()
448 	ret = mfd_add_devices(dev, lpss->devid, lpss->cell,  in intel_lpss_probe()
458 	intel_lpss_debugfs_remove(lpss);  in intel_lpss_probe()
459 	intel_lpss_ltr_hide(lpss);  in intel_lpss_probe()
460 	intel_lpss_unregister_clock(lpss);  in intel_lpss_probe()
463 	ida_simple_remove(&intel_lpss_devid_ida, lpss->devid);  in intel_lpss_probe()
471 	struct intel_lpss *lpss = dev_get_drvdata(dev);  in intel_lpss_remove()  local
474 	intel_lpss_debugfs_remove(lpss);  in intel_lpss_remove()
475 	intel_lpss_ltr_hide(lpss);  in intel_lpss_remove()
476 	intel_lpss_unregister_clock(lpss);  in intel_lpss_remove()
477 	ida_simple_remove(&intel_lpss_devid_ida, lpss->devid);  in intel_lpss_remove()
502 	struct intel_lpss *lpss = dev_get_drvdata(dev);  in intel_lpss_suspend()  local
507 		lpss->priv_ctx[i] = readl(lpss->priv + i * 4);  in intel_lpss_suspend()
514 	if (lpss->type != LPSS_DEV_UART)  in intel_lpss_suspend()
515 		writel(0, lpss->priv + LPSS_PRIV_RESETS);  in intel_lpss_suspend()
523 	struct intel_lpss *lpss = dev_get_drvdata(dev);  in intel_lpss_resume()  local
526 	intel_lpss_deassert_reset(lpss);  in intel_lpss_resume()
530 		writel(lpss->priv_ctx[i], lpss->priv + i * 4);  in intel_lpss_resume()