Lines Matching +full:pwm +full:- +full:off +full:- +full:delay +full:- +full:ms
1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/clk-provider.h>
19 #include <linux/platform_data/x86/clk-lpss.h>
23 #include <linux/pwm.h>
25 #include <linux/delay.h>
32 #include <asm/intel-family.h>
69 * For some devices the DSDT AML code for another device turns off the device
70 * before our suspend handler runs, causing us to read/save all 1-s (0xffffffff)
114 * it can be powered off automatically whenever the last LPSS device goes down.
133 offset = pdata->dev_desc->prv_offset + LPSS_TX_INT; in lpss_uart_setup()
134 val = readl(pdata->mmio_base + offset); in lpss_uart_setup()
135 writel(val | LPSS_TX_INT_MASK, pdata->mmio_base + offset); in lpss_uart_setup()
137 val = readl(pdata->mmio_base + LPSS_UART_CPR); in lpss_uart_setup()
139 offset = pdata->dev_desc->prv_offset + LPSS_GENERAL; in lpss_uart_setup()
140 val = readl(pdata->mmio_base + offset); in lpss_uart_setup()
142 writel(val, pdata->mmio_base + offset); in lpss_uart_setup()
151 offset = pdata->dev_desc->prv_offset + LPSS_RESETS; in lpss_deassert_reset()
152 val = readl(pdata->mmio_base + offset); in lpss_deassert_reset()
154 writel(val, pdata->mmio_base + offset); in lpss_deassert_reset()
158 * BYT PWM used for backlight control by the i915 driver on systems without
164 "pwm-lpss-platform"),
169 struct acpi_device *adev = pdata->adev; in byt_pwm_setup()
171 /* Only call pwm_add_table for the first PWM controller */ in byt_pwm_setup()
172 if (!adev->pnp.unique_id || strcmp(adev->pnp.unique_id, "1")) in byt_pwm_setup()
182 const char *uid_str = acpi_device_uid(pdata->adev); in byt_i2c_setup()
183 acpi_handle handle = pdata->adev->handle; in byt_i2c_setup()
195 pmc_atom_d3_mask &= ~(BIT_LPSS2_F1_I2C1 << (uid - 1)); in byt_i2c_setup()
199 if (readl(pdata->mmio_base + pdata->dev_desc->prv_offset)) in byt_i2c_setup()
200 pdata->fixed_clk_rate = 133000000; in byt_i2c_setup()
202 writel(0, pdata->mmio_base + LPSS_I2C_ENABLE); in byt_i2c_setup()
205 /* BSW PWM used for backlight control by the i915 driver */
209 "pwm-lpss-platform"),
214 struct acpi_device *adev = pdata->adev; in bsw_pwm_setup()
216 /* Only call pwm_add_table for the first PWM controller */ in bsw_pwm_setup()
217 if (!adev->pnp.unique_id || strcmp(adev->pnp.unique_id, "1")) in bsw_pwm_setup()
235 PROPERTY_ENTRY_U32("reg-io-width", 4),
236 PROPERTY_ENTRY_U32("reg-shift", 2),
237 PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
388 lpss_clk_dev = platform_device_register_simple("clk-lpt", -1, NULL, 0); in lpt_register_clock_device()
394 const struct lpss_device_desc *dev_desc = pdata->dev_desc; in register_device_clock()
395 const char *devname = dev_name(&adev->dev); in register_device_clock()
406 return -ENODEV; in register_device_clock()
407 clk = clk_data->clk; in register_device_clock()
409 if (!pdata->mmio_base in register_device_clock()
410 || pdata->mmio_size < dev_desc->prv_offset + LPSS_CLK_SIZE) in register_device_clock()
411 return -ENODATA; in register_device_clock()
413 parent = clk_data->name; in register_device_clock()
414 prv_base = pdata->mmio_base + dev_desc->prv_offset; in register_device_clock()
416 if (pdata->fixed_clk_rate) { in register_device_clock()
418 pdata->fixed_clk_rate); in register_device_clock()
422 if (dev_desc->flags & LPSS_CLK_GATE) { in register_device_clock()
428 if (dev_desc->flags & LPSS_CLK_DIVIDER) { in register_device_clock()
433 clk_name = kasprintf(GFP_KERNEL, "%s-div", devname); in register_device_clock()
435 return -ENOMEM; in register_device_clock()
441 clk_name = kasprintf(GFP_KERNEL, "%s-update", devname); in register_device_clock()
444 return -ENOMEM; in register_device_clock()
456 pdata->clk = clk; in register_device_clock()
457 clk_register_clkdev(clk, dev_desc->clk_con_id, devname); in register_device_clock()
505 return acpi_dev_hid_uid_match(adev, link->supplier_hid, link->supplier_uid); in acpi_lpss_is_supplier()
511 return acpi_dev_hid_uid_match(adev, link->consumer_hid, link->consumer_uid); in acpi_lpss_is_consumer()
527 return acpi_dev_hid_uid_match(adev, id->hid, id->uid); in match_hid_uid()
552 if (!acpi_has_method(adev->handle, "_DEP")) in acpi_lpss_dep()
555 status = acpi_evaluate_reference(adev->handle, "_DEP", NULL, in acpi_lpss_dep()
558 dev_dbg(&adev->dev, "Failed to evaluate _DEP.\n"); in acpi_lpss_dep()
575 dev2 = acpi_lpss_find_device(link->consumer_hid, link->consumer_uid); in acpi_lpss_link_consumer()
579 if ((link->dep_missing_ids && dmi_check_system(link->dep_missing_ids)) in acpi_lpss_link_consumer()
581 device_link_add(dev2, dev1, link->flags); in acpi_lpss_link_consumer()
591 dev2 = acpi_lpss_find_device(link->supplier_hid, link->supplier_uid); in acpi_lpss_link_supplier()
595 if ((link->dep_missing_ids && dmi_check_system(link->dep_missing_ids)) in acpi_lpss_link_supplier()
597 device_link_add(dev1, dev2, link->flags); in acpi_lpss_link_supplier()
611 acpi_lpss_link_consumer(&pdev->dev, link); in acpi_lpss_create_device_links()
614 acpi_lpss_link_supplier(&pdev->dev, link); in acpi_lpss_create_device_links()
628 dev_desc = (const struct lpss_device_desc *)id->driver_data; in acpi_lpss_create_device()
635 return -ENOMEM; in acpi_lpss_create_device()
643 if (resource_type(rentry->res) == IORESOURCE_MEM) { in acpi_lpss_create_device()
644 if (dev_desc->prv_size_override) in acpi_lpss_create_device()
645 pdata->mmio_size = dev_desc->prv_size_override; in acpi_lpss_create_device()
647 pdata->mmio_size = resource_size(rentry->res); in acpi_lpss_create_device()
648 pdata->mmio_base = ioremap(rentry->res->start, in acpi_lpss_create_device()
649 pdata->mmio_size); in acpi_lpss_create_device()
655 if (!pdata->mmio_base) { in acpi_lpss_create_device()
657 adev->pnp.type.platform_id = 0; in acpi_lpss_create_device()
663 pdata->adev = adev; in acpi_lpss_create_device()
664 pdata->dev_desc = dev_desc; in acpi_lpss_create_device()
666 if (dev_desc->setup) in acpi_lpss_create_device()
667 dev_desc->setup(pdata); in acpi_lpss_create_device()
669 if (dev_desc->flags & LPSS_CLK) { in acpi_lpss_create_device()
685 adev->driver_data = pdata; in acpi_lpss_create_device()
686 pdev = acpi_create_platform_device(adev, dev_desc->properties); in acpi_lpss_create_device()
693 adev->driver_data = NULL; in acpi_lpss_create_device()
702 return readl(pdata->mmio_base + pdata->dev_desc->prv_offset + reg); in __lpss_reg_read()
708 writel(val, pdata->mmio_base + pdata->dev_desc->prv_offset + reg); in __lpss_reg_write()
722 spin_lock_irqsave(&dev->power.lock, flags); in lpss_reg_read()
724 ret = -EAGAIN; in lpss_reg_read()
728 if (WARN_ON(!pdata || !pdata->mmio_base)) { in lpss_reg_read()
729 ret = -ENODEV; in lpss_reg_read()
735 spin_unlock_irqrestore(&dev->power.lock, flags); in lpss_reg_read()
746 reg = strcmp(attr->attr.name, "auto_ltr") ? LPSS_SW_LTR : LPSS_AUTO_LTR; in lpss_ltr_show()
818 * acpi_lpss_save_ctx() - Save the private registers of LPSS device
834 pdata->prv_reg_ctx[i] = __lpss_reg_read(pdata, offset); in acpi_lpss_save_ctx()
836 pdata->prv_reg_ctx[i], offset); in acpi_lpss_save_ctx()
841 * acpi_lpss_restore_ctx() - Restore the private registers of LPSS device
855 __lpss_reg_write(pdata->prv_reg_ctx[i], pdata, offset); in acpi_lpss_restore_ctx()
857 pdata->prv_reg_ctx[i], offset); in acpi_lpss_restore_ctx()
864 * The following delay is needed or the subsequent write operations may in acpi_lpss_d3_to_d0_delay()
866 * expects 10ms delay before the device can be accessed after D3 to D0 in acpi_lpss_d3_to_d0_delay()
867 * transition. However some platforms like BSW does not need this delay. in acpi_lpss_d3_to_d0_delay()
869 unsigned int delay = 10; /* default 10ms delay */ in acpi_lpss_d3_to_d0_delay() local
871 if (pdata->dev_desc->flags & LPSS_NO_D3_DELAY) in acpi_lpss_d3_to_d0_delay()
872 delay = 0; in acpi_lpss_d3_to_d0_delay()
874 msleep(delay); in acpi_lpss_d3_to_d0_delay()
889 * This is called only on ->probe() stage where a device is either in in acpi_lpss_activate()
890 * known state defined by BIOS or most likely powered off. Due to this in acpi_lpss_activate()
891 * we have to deassert reset line to be sure that ->probe() will in acpi_lpss_activate()
894 if (pdata->dev_desc->flags & (LPSS_SAVE_CTX | LPSS_SAVE_CTX_ONCE)) in acpi_lpss_activate()
898 if (pdata->dev_desc->flags & LPSS_SAVE_CTX_ONCE) in acpi_lpss_activate()
1010 if (pdata->dev_desc->flags & LPSS_SAVE_CTX) in acpi_lpss_suspend()
1017 * wrong status for devices being about to be powered off. See in acpi_lpss_suspend()
1045 if (pdata->dev_desc->flags & (LPSS_SAVE_CTX | LPSS_SAVE_CTX_ONCE)) in acpi_lpss_resume()
1067 if (pdata->dev_desc->resume_from_noirq) in acpi_lpss_suspend_late()
1078 if (pdata->dev_desc->resume_from_noirq) { in acpi_lpss_suspend_noirq()
1080 * The driver's ->suspend_late callback will be invoked by in acpi_lpss_suspend_noirq()
1082 * driver really wanted to run that code in ->suspend_noirq, but in acpi_lpss_suspend_noirq()
1105 if (pdata->dev_desc->resume_from_noirq) in acpi_lpss_resume_early()
1127 if (!pdata->dev_desc->resume_from_noirq) in acpi_lpss_resume_noirq()
1131 * The driver's ->resume_early callback will be invoked by in acpi_lpss_resume_noirq()
1133 * really wanted to run that code in ->resume_noirq, but it could not in acpi_lpss_resume_noirq()
1151 if (pdata->dev_desc->resume_from_noirq) in acpi_lpss_restore_early()
1166 if (!pdata->dev_desc->resume_from_noirq) in acpi_lpss_restore_noirq()
1187 if (pdata->dev_desc->resume_from_noirq) in acpi_lpss_poweroff_late()
1200 if (pdata->dev_desc->resume_from_noirq) { in acpi_lpss_poweroff_noirq()
1262 id = acpi_match_device(acpi_lpss_device_ids, &pdev->dev); in acpi_lpss_platform_notify()
1263 if (!id || !id->driver_data) in acpi_lpss_platform_notify()
1266 if (acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev)) in acpi_lpss_platform_notify()
1273 if (pdata->mmio_base && in acpi_lpss_platform_notify()
1274 pdata->mmio_size < pdata->dev_desc->prv_offset + LPSS_LTR_SIZE) { in acpi_lpss_platform_notify()
1275 dev_err(&pdev->dev, "MMIO size insufficient to access LTR\n"); in acpi_lpss_platform_notify()
1281 dev_pm_domain_set(&pdev->dev, &acpi_lpss_pm_domain); in acpi_lpss_platform_notify()
1285 dev_pm_domain_set(&pdev->dev, NULL); in acpi_lpss_platform_notify()
1288 dev_pm_domain_set(&pdev->dev, &acpi_lpss_pm_domain); in acpi_lpss_platform_notify()
1289 if (pdata->dev_desc->flags & LPSS_LTR) in acpi_lpss_platform_notify()
1290 return sysfs_create_group(&pdev->dev.kobj, in acpi_lpss_platform_notify()
1294 if (pdata->dev_desc->flags & LPSS_LTR) in acpi_lpss_platform_notify()
1295 sysfs_remove_group(&pdev->dev.kobj, &lpss_attr_group); in acpi_lpss_platform_notify()
1296 dev_pm_domain_set(&pdev->dev, NULL); in acpi_lpss_platform_notify()
1313 if (!pdata || !pdata->mmio_base || !(pdata->dev_desc->flags & LPSS_LTR)) in acpi_lpss_bind()
1316 if (pdata->mmio_size >= pdata->dev_desc->prv_offset + LPSS_LTR_SIZE) in acpi_lpss_bind()
1317 dev->power.set_latency_tolerance = acpi_lpss_set_ltr; in acpi_lpss_bind()
1324 dev->power.set_latency_tolerance = NULL; in acpi_lpss_unbind()