Lines Matching refs:lpss
139 static void intel_lpss_cache_ltr(struct intel_lpss *lpss) in intel_lpss_cache_ltr() argument
141 lpss->active_ltr = readl(lpss->priv + LPSS_PRIV_ACTIVELTR); in intel_lpss_cache_ltr()
142 lpss->idle_ltr = readl(lpss->priv + LPSS_PRIV_IDLELTR); in intel_lpss_cache_ltr()
145 static int intel_lpss_debugfs_add(struct intel_lpss *lpss) in intel_lpss_debugfs_add() argument
149 dir = debugfs_create_dir(dev_name(lpss->dev), intel_lpss_debugfs); in intel_lpss_debugfs_add()
154 intel_lpss_cache_ltr(lpss); in intel_lpss_debugfs_add()
156 debugfs_create_x32("capabilities", S_IRUGO, dir, &lpss->caps); in intel_lpss_debugfs_add()
157 debugfs_create_x32("active_ltr", S_IRUGO, dir, &lpss->active_ltr); in intel_lpss_debugfs_add()
158 debugfs_create_x32("idle_ltr", S_IRUGO, dir, &lpss->idle_ltr); in intel_lpss_debugfs_add()
160 lpss->debugfs = dir; in intel_lpss_debugfs_add()
164 static void intel_lpss_debugfs_remove(struct intel_lpss *lpss) in intel_lpss_debugfs_remove() argument
166 debugfs_remove_recursive(lpss->debugfs); in intel_lpss_debugfs_remove()
171 struct intel_lpss *lpss = dev_get_drvdata(dev); in intel_lpss_ltr_set() local
179 ltr = readl(lpss->priv + LPSS_PRIV_ACTIVELTR); in intel_lpss_ltr_set()
194 if (ltr == lpss->active_ltr) in intel_lpss_ltr_set()
197 writel(ltr, lpss->priv + LPSS_PRIV_ACTIVELTR); in intel_lpss_ltr_set()
198 writel(ltr, lpss->priv + LPSS_PRIV_IDLELTR); in intel_lpss_ltr_set()
201 intel_lpss_cache_ltr(lpss); in intel_lpss_ltr_set()
204 static void intel_lpss_ltr_expose(struct intel_lpss *lpss) in intel_lpss_ltr_expose() argument
206 lpss->dev->power.set_latency_tolerance = intel_lpss_ltr_set; in intel_lpss_ltr_expose()
207 dev_pm_qos_expose_latency_tolerance(lpss->dev); in intel_lpss_ltr_expose()
210 static void intel_lpss_ltr_hide(struct intel_lpss *lpss) in intel_lpss_ltr_hide() argument
212 dev_pm_qos_hide_latency_tolerance(lpss->dev); in intel_lpss_ltr_hide()
213 lpss->dev->power.set_latency_tolerance = NULL; in intel_lpss_ltr_hide()
216 static int intel_lpss_assign_devs(struct intel_lpss *lpss) in intel_lpss_assign_devs() argument
221 type = lpss->caps & LPSS_PRIV_CAPS_TYPE_MASK; in intel_lpss_assign_devs()
238 lpss->cell = devm_kmemdup(lpss->dev, cell, sizeof(*cell), GFP_KERNEL); in intel_lpss_assign_devs()
239 if (!lpss->cell) in intel_lpss_assign_devs()
242 lpss->type = type; in intel_lpss_assign_devs()
247 static bool intel_lpss_has_idma(const struct intel_lpss *lpss) in intel_lpss_has_idma() argument
249 return (lpss->caps & LPSS_PRIV_CAPS_NO_IDMA) == 0; in intel_lpss_has_idma()
252 static void intel_lpss_set_remap_addr(const struct intel_lpss *lpss) in intel_lpss_set_remap_addr() argument
254 resource_size_t addr = lpss->info->mem->start; in intel_lpss_set_remap_addr()
256 lo_hi_writeq(addr, lpss->priv + LPSS_PRIV_REMAP_ADDR); in intel_lpss_set_remap_addr()
259 static void intel_lpss_deassert_reset(const struct intel_lpss *lpss) in intel_lpss_deassert_reset() argument
264 writel(value, lpss->priv + LPSS_PRIV_RESETS); in intel_lpss_deassert_reset()
267 static void intel_lpss_init_dev(const struct intel_lpss *lpss) in intel_lpss_init_dev() argument
272 writel(0, lpss->priv + LPSS_PRIV_RESETS); in intel_lpss_init_dev()
274 intel_lpss_deassert_reset(lpss); in intel_lpss_init_dev()
276 intel_lpss_set_remap_addr(lpss); in intel_lpss_init_dev()
278 if (!intel_lpss_has_idma(lpss)) in intel_lpss_init_dev()
282 if (lpss->type == LPSS_DEV_SPI) in intel_lpss_init_dev()
283 writel(value, lpss->priv + LPSS_PRIV_SSP_REG); in intel_lpss_init_dev()
297 static int intel_lpss_register_clock_divider(struct intel_lpss *lpss, in intel_lpss_register_clock_divider() argument
307 lpss->priv, 0, 0, NULL); in intel_lpss_register_clock_divider()
313 0, lpss->priv, 1, 15, 16, 15, in intel_lpss_register_clock_divider()
320 if (lpss->info->quirks & QUIRK_CLOCK_DIVIDER_UNITY) { in intel_lpss_register_clock_divider()
321 ret = clk_set_rate(tmp, lpss->info->clk_rate); in intel_lpss_register_clock_divider()
328 CLK_SET_RATE_PARENT, lpss->priv, 31, 0, NULL); in intel_lpss_register_clock_divider()
336 static int intel_lpss_register_clock(struct intel_lpss *lpss) in intel_lpss_register_clock() argument
338 const struct mfd_cell *cell = lpss->cell; in intel_lpss_register_clock()
343 if (!lpss->info->clk_rate) in intel_lpss_register_clock()
347 clk = clk_register_fixed_rate(NULL, dev_name(lpss->dev), NULL, 0, in intel_lpss_register_clock()
348 lpss->info->clk_rate); in intel_lpss_register_clock()
352 snprintf(devname, sizeof(devname), "%s.%d", cell->name, lpss->devid); in intel_lpss_register_clock()
358 if (lpss->type != LPSS_DEV_I2C) { in intel_lpss_register_clock()
359 ret = intel_lpss_register_clock_divider(lpss, devname, &clk); in intel_lpss_register_clock()
367 lpss->clock = clkdev_create(clk, lpss->info->clk_con_id, "%s", devname); in intel_lpss_register_clock()
368 if (!lpss->clock) in intel_lpss_register_clock()
371 lpss->clk = clk; in intel_lpss_register_clock()
381 static void intel_lpss_unregister_clock(struct intel_lpss *lpss) in intel_lpss_unregister_clock() argument
383 if (IS_ERR_OR_NULL(lpss->clk)) in intel_lpss_unregister_clock()
386 clkdev_drop(lpss->clock); in intel_lpss_unregister_clock()
387 intel_lpss_unregister_clock_tree(lpss->clk); in intel_lpss_unregister_clock()
393 struct intel_lpss *lpss; in intel_lpss_probe() local
402 lpss = devm_kzalloc(dev, sizeof(*lpss), GFP_KERNEL); in intel_lpss_probe()
403 if (!lpss) in intel_lpss_probe()
406 lpss->priv = devm_ioremap_uc(dev, info->mem->start + LPSS_PRIV_OFFSET, in intel_lpss_probe()
408 if (!lpss->priv) in intel_lpss_probe()
411 lpss->info = info; in intel_lpss_probe()
412 lpss->dev = dev; in intel_lpss_probe()
413 lpss->caps = readl(lpss->priv + LPSS_PRIV_CAPS); in intel_lpss_probe()
415 dev_set_drvdata(dev, lpss); in intel_lpss_probe()
417 ret = intel_lpss_assign_devs(lpss); in intel_lpss_probe()
421 lpss->cell->swnode = info->swnode; in intel_lpss_probe()
422 lpss->cell->ignore_resource_conflicts = info->quirks & QUIRK_IGNORE_RESOURCE_CONFLICTS; in intel_lpss_probe()
424 intel_lpss_init_dev(lpss); in intel_lpss_probe()
426 lpss->devid = ida_alloc(&intel_lpss_devid_ida, GFP_KERNEL); in intel_lpss_probe()
427 if (lpss->devid < 0) in intel_lpss_probe()
428 return lpss->devid; in intel_lpss_probe()
430 ret = intel_lpss_register_clock(lpss); in intel_lpss_probe()
434 intel_lpss_ltr_expose(lpss); in intel_lpss_probe()
436 ret = intel_lpss_debugfs_add(lpss); in intel_lpss_probe()
440 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_free(&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_free(&intel_lpss_devid_ida, lpss->devid); in intel_lpss_remove()
501 struct intel_lpss *lpss = dev_get_drvdata(dev); in intel_lpss_suspend() local
506 lpss->priv_ctx[i] = readl(lpss->priv + i * 4); in intel_lpss_suspend()
513 if (lpss->type != LPSS_DEV_UART) in intel_lpss_suspend()
514 writel(0, lpss->priv + LPSS_PRIV_RESETS); in intel_lpss_suspend()
521 struct intel_lpss *lpss = dev_get_drvdata(dev); in intel_lpss_resume() local
524 intel_lpss_deassert_reset(lpss); in intel_lpss_resume()
528 writel(lpss->priv_ctx[i], lpss->priv + i * 4); in intel_lpss_resume()