v4.19.13 snapshot.
diff --git a/drivers/leds/leds-mc13783.c b/drivers/leds/leds-mc13783.c
new file mode 100644
index 0000000..47ad7de
--- /dev/null
+++ b/drivers/leds/leds-mc13783.c
@@ -0,0 +1,318 @@
+/*
+ * LEDs driver for Freescale MC13783/MC13892/MC34708
+ *
+ * Copyright (C) 2010 Philippe Rétornaz
+ *
+ * Based on leds-da903x:
+ * Copyright (C) 2008 Compulab, Ltd.
+ * Mike Rapoport <mike@compulab.co.il>
+ *
+ * Copyright (C) 2006-2008 Marvell International Ltd.
+ * Eric Miao <eric.miao@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/of.h>
+#include <linux/mfd/mc13xxx.h>
+
+struct mc13xxx_led_devtype {
+ int led_min;
+ int led_max;
+ int num_regs;
+ u32 ledctrl_base;
+};
+
+struct mc13xxx_led {
+ struct led_classdev cdev;
+ int id;
+ struct mc13xxx_leds *leds;
+};
+
+struct mc13xxx_leds {
+ struct mc13xxx *master;
+ struct mc13xxx_led_devtype *devtype;
+ int num_leds;
+ struct mc13xxx_led *led;
+};
+
+static unsigned int mc13xxx_max_brightness(int id)
+{
+ if (id >= MC13783_LED_MD && id <= MC13783_LED_KP)
+ return 0x0f;
+ else if (id >= MC13783_LED_R1 && id <= MC13783_LED_B3)
+ return 0x1f;
+
+ return 0x3f;
+}
+
+static int mc13xxx_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct mc13xxx_led *led =
+ container_of(led_cdev, struct mc13xxx_led, cdev);
+ struct mc13xxx_leds *leds = led->leds;
+ unsigned int reg, bank, off, shift;
+
+ switch (led->id) {
+ case MC13783_LED_MD:
+ case MC13783_LED_AD:
+ case MC13783_LED_KP:
+ reg = 2;
+ shift = 9 + (led->id - MC13783_LED_MD) * 4;
+ break;
+ case MC13783_LED_R1:
+ case MC13783_LED_G1:
+ case MC13783_LED_B1:
+ case MC13783_LED_R2:
+ case MC13783_LED_G2:
+ case MC13783_LED_B2:
+ case MC13783_LED_R3:
+ case MC13783_LED_G3:
+ case MC13783_LED_B3:
+ off = led->id - MC13783_LED_R1;
+ bank = off / 3;
+ reg = 3 + bank;
+ shift = (off - bank * 3) * 5 + 6;
+ break;
+ case MC13892_LED_MD:
+ case MC13892_LED_AD:
+ case MC13892_LED_KP:
+ off = led->id - MC13892_LED_MD;
+ reg = off / 2;
+ shift = 3 + (off - reg * 2) * 12;
+ break;
+ case MC13892_LED_R:
+ case MC13892_LED_G:
+ case MC13892_LED_B:
+ off = led->id - MC13892_LED_R;
+ bank = off / 2;
+ reg = 2 + bank;
+ shift = (off - bank * 2) * 12 + 3;
+ break;
+ case MC34708_LED_R:
+ case MC34708_LED_G:
+ reg = 0;
+ shift = 3 + (led->id - MC34708_LED_R) * 12;
+ break;
+ default:
+ BUG();
+ }
+
+ return mc13xxx_reg_rmw(leds->master, leds->devtype->ledctrl_base + reg,
+ mc13xxx_max_brightness(led->id) << shift,
+ value << shift);
+}
+
+#ifdef CONFIG_OF
+static struct mc13xxx_leds_platform_data __init *mc13xxx_led_probe_dt(
+ struct platform_device *pdev)
+{
+ struct mc13xxx_leds *leds = platform_get_drvdata(pdev);
+ struct mc13xxx_leds_platform_data *pdata;
+ struct device_node *parent, *child;
+ struct device *dev = &pdev->dev;
+ int i = 0, ret = -ENODATA;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return ERR_PTR(-ENOMEM);
+
+ parent = of_get_child_by_name(dev->parent->of_node, "leds");
+ if (!parent)
+ goto out_node_put;
+
+ ret = of_property_read_u32_array(parent, "led-control",
+ pdata->led_control,
+ leds->devtype->num_regs);
+ if (ret)
+ goto out_node_put;
+
+ pdata->num_leds = of_get_child_count(parent);
+
+ pdata->led = devm_kcalloc(dev, pdata->num_leds, sizeof(*pdata->led),
+ GFP_KERNEL);
+ if (!pdata->led) {
+ ret = -ENOMEM;
+ goto out_node_put;
+ }
+
+ for_each_child_of_node(parent, child) {
+ const char *str;
+ u32 tmp;
+
+ if (of_property_read_u32(child, "reg", &tmp))
+ continue;
+ pdata->led[i].id = leds->devtype->led_min + tmp;
+
+ if (!of_property_read_string(child, "label", &str))
+ pdata->led[i].name = str;
+ if (!of_property_read_string(child, "linux,default-trigger",
+ &str))
+ pdata->led[i].default_trigger = str;
+
+ i++;
+ }
+
+ pdata->num_leds = i;
+ ret = i > 0 ? 0 : -ENODATA;
+
+out_node_put:
+ of_node_put(parent);
+
+ return ret ? ERR_PTR(ret) : pdata;
+}
+#else
+static inline struct mc13xxx_leds_platform_data __init *mc13xxx_led_probe_dt(
+ struct platform_device *pdev)
+{
+ return ERR_PTR(-ENOSYS);
+}
+#endif
+
+static int __init mc13xxx_led_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mc13xxx_leds_platform_data *pdata = dev_get_platdata(dev);
+ struct mc13xxx *mcdev = dev_get_drvdata(dev->parent);
+ struct mc13xxx_led_devtype *devtype =
+ (struct mc13xxx_led_devtype *)pdev->id_entry->driver_data;
+ struct mc13xxx_leds *leds;
+ int i, id, ret = -ENODATA;
+ u32 init_led = 0;
+
+ leds = devm_kzalloc(dev, sizeof(*leds), GFP_KERNEL);
+ if (!leds)
+ return -ENOMEM;
+
+ leds->devtype = devtype;
+ leds->master = mcdev;
+ platform_set_drvdata(pdev, leds);
+
+ if (dev->parent->of_node) {
+ pdata = mc13xxx_led_probe_dt(pdev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+ } else if (!pdata)
+ return -ENODATA;
+
+ leds->num_leds = pdata->num_leds;
+
+ if ((leds->num_leds < 1) ||
+ (leds->num_leds > (devtype->led_max - devtype->led_min + 1))) {
+ dev_err(dev, "Invalid LED count %d\n", leds->num_leds);
+ return -EINVAL;
+ }
+
+ leds->led = devm_kcalloc(dev, leds->num_leds, sizeof(*leds->led),
+ GFP_KERNEL);
+ if (!leds->led)
+ return -ENOMEM;
+
+ for (i = 0; i < devtype->num_regs; i++) {
+ ret = mc13xxx_reg_write(mcdev, leds->devtype->ledctrl_base + i,
+ pdata->led_control[i]);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < leds->num_leds; i++) {
+ const char *name, *trig;
+
+ ret = -EINVAL;
+
+ id = pdata->led[i].id;
+ name = pdata->led[i].name;
+ trig = pdata->led[i].default_trigger;
+
+ if ((id > devtype->led_max) || (id < devtype->led_min)) {
+ dev_err(dev, "Invalid ID %i\n", id);
+ break;
+ }
+
+ if (init_led & (1 << id)) {
+ dev_warn(dev, "LED %i already initialized\n", id);
+ break;
+ }
+
+ init_led |= 1 << id;
+ leds->led[i].id = id;
+ leds->led[i].leds = leds;
+ leds->led[i].cdev.name = name;
+ leds->led[i].cdev.default_trigger = trig;
+ leds->led[i].cdev.flags = LED_CORE_SUSPENDRESUME;
+ leds->led[i].cdev.brightness_set_blocking = mc13xxx_led_set;
+ leds->led[i].cdev.max_brightness = mc13xxx_max_brightness(id);
+
+ ret = led_classdev_register(dev->parent, &leds->led[i].cdev);
+ if (ret) {
+ dev_err(dev, "Failed to register LED %i\n", id);
+ break;
+ }
+ }
+
+ if (ret)
+ while (--i >= 0)
+ led_classdev_unregister(&leds->led[i].cdev);
+
+ return ret;
+}
+
+static int mc13xxx_led_remove(struct platform_device *pdev)
+{
+ struct mc13xxx_leds *leds = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < leds->num_leds; i++)
+ led_classdev_unregister(&leds->led[i].cdev);
+
+ return 0;
+}
+
+static const struct mc13xxx_led_devtype mc13783_led_devtype = {
+ .led_min = MC13783_LED_MD,
+ .led_max = MC13783_LED_B3,
+ .num_regs = 6,
+ .ledctrl_base = 51,
+};
+
+static const struct mc13xxx_led_devtype mc13892_led_devtype = {
+ .led_min = MC13892_LED_MD,
+ .led_max = MC13892_LED_B,
+ .num_regs = 4,
+ .ledctrl_base = 51,
+};
+
+static const struct mc13xxx_led_devtype mc34708_led_devtype = {
+ .led_min = MC34708_LED_R,
+ .led_max = MC34708_LED_G,
+ .num_regs = 1,
+ .ledctrl_base = 54,
+};
+
+static const struct platform_device_id mc13xxx_led_id_table[] = {
+ { "mc13783-led", (kernel_ulong_t)&mc13783_led_devtype, },
+ { "mc13892-led", (kernel_ulong_t)&mc13892_led_devtype, },
+ { "mc34708-led", (kernel_ulong_t)&mc34708_led_devtype, },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, mc13xxx_led_id_table);
+
+static struct platform_driver mc13xxx_led_driver = {
+ .driver = {
+ .name = "mc13xxx-led",
+ },
+ .remove = mc13xxx_led_remove,
+ .id_table = mc13xxx_led_id_table,
+};
+module_platform_driver_probe(mc13xxx_led_driver, mc13xxx_led_probe);
+
+MODULE_DESCRIPTION("LEDs driver for Freescale MC13XXX PMIC");
+MODULE_AUTHOR("Philippe Retornaz <philippe.retornaz@epfl.ch>");
+MODULE_LICENSE("GPL");