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path: root/drivers/mfd/ab8500-core.c
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-rw-r--r--drivers/mfd/ab8500-core.c1177
1 files changed, 1177 insertions, 0 deletions
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
new file mode 100644
index 00000000..1f08704f
--- /dev/null
+++ b/drivers/mfd/ab8500-core.c
@@ -0,0 +1,1177 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
+ * Author: Rabin Vincent <rabin.vincent@stericsson.com>
+ * Author: Mattias Wallin <mattias.wallin@stericsson.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/regulator/ab8500.h>
+
+/*
+ * Interrupt register offsets
+ * Bank : 0x0E
+ */
+#define AB8500_IT_SOURCE1_REG 0x00
+#define AB8500_IT_SOURCE2_REG 0x01
+#define AB8500_IT_SOURCE3_REG 0x02
+#define AB8500_IT_SOURCE4_REG 0x03
+#define AB8500_IT_SOURCE5_REG 0x04
+#define AB8500_IT_SOURCE6_REG 0x05
+#define AB8500_IT_SOURCE7_REG 0x06
+#define AB8500_IT_SOURCE8_REG 0x07
+#define AB9540_IT_SOURCE13_REG 0x0C
+#define AB8500_IT_SOURCE19_REG 0x12
+#define AB8500_IT_SOURCE20_REG 0x13
+#define AB8500_IT_SOURCE21_REG 0x14
+#define AB8500_IT_SOURCE22_REG 0x15
+#define AB8500_IT_SOURCE23_REG 0x16
+#define AB8500_IT_SOURCE24_REG 0x17
+
+/*
+ * latch registers
+ */
+#define AB8500_IT_LATCH1_REG 0x20
+#define AB8500_IT_LATCH2_REG 0x21
+#define AB8500_IT_LATCH3_REG 0x22
+#define AB8500_IT_LATCH4_REG 0x23
+#define AB8500_IT_LATCH5_REG 0x24
+#define AB8500_IT_LATCH6_REG 0x25
+#define AB8500_IT_LATCH7_REG 0x26
+#define AB8500_IT_LATCH8_REG 0x27
+#define AB8500_IT_LATCH9_REG 0x28
+#define AB8500_IT_LATCH10_REG 0x29
+#define AB8500_IT_LATCH12_REG 0x2B
+#define AB9540_IT_LATCH13_REG 0x2C
+#define AB8500_IT_LATCH19_REG 0x32
+#define AB8500_IT_LATCH20_REG 0x33
+#define AB8500_IT_LATCH21_REG 0x34
+#define AB8500_IT_LATCH22_REG 0x35
+#define AB8500_IT_LATCH23_REG 0x36
+#define AB8500_IT_LATCH24_REG 0x37
+
+/*
+ * mask registers
+ */
+
+#define AB8500_IT_MASK1_REG 0x40
+#define AB8500_IT_MASK2_REG 0x41
+#define AB8500_IT_MASK3_REG 0x42
+#define AB8500_IT_MASK4_REG 0x43
+#define AB8500_IT_MASK5_REG 0x44
+#define AB8500_IT_MASK6_REG 0x45
+#define AB8500_IT_MASK7_REG 0x46
+#define AB8500_IT_MASK8_REG 0x47
+#define AB8500_IT_MASK9_REG 0x48
+#define AB8500_IT_MASK10_REG 0x49
+#define AB8500_IT_MASK11_REG 0x4A
+#define AB8500_IT_MASK12_REG 0x4B
+#define AB8500_IT_MASK13_REG 0x4C
+#define AB8500_IT_MASK14_REG 0x4D
+#define AB8500_IT_MASK15_REG 0x4E
+#define AB8500_IT_MASK16_REG 0x4F
+#define AB8500_IT_MASK17_REG 0x50
+#define AB8500_IT_MASK18_REG 0x51
+#define AB8500_IT_MASK19_REG 0x52
+#define AB8500_IT_MASK20_REG 0x53
+#define AB8500_IT_MASK21_REG 0x54
+#define AB8500_IT_MASK22_REG 0x55
+#define AB8500_IT_MASK23_REG 0x56
+#define AB8500_IT_MASK24_REG 0x57
+
+#define AB8500_REV_REG 0x80
+#define AB8500_IC_NAME_REG 0x82
+#define AB8500_SWITCH_OFF_STATUS 0x00
+
+#define AB8500_TURN_ON_STATUS 0x00
+
+#define AB9540_MODEM_CTRL2_REG 0x23
+#define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT BIT(2)
+
+/*
+ * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
+ * numbers are indexed into this array with (num / 8). The interupts are
+ * defined in linux/mfd/ab8500.h
+ *
+ * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
+ * offset 0.
+ */
+/* AB8500 support */
+static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
+ 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
+};
+
+/* AB9540 support */
+static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
+ 0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24,
+};
+
+static const char ab8500_version_str[][7] = {
+ [AB8500_VERSION_AB8500] = "AB8500",
+ [AB8500_VERSION_AB8505] = "AB8505",
+ [AB8500_VERSION_AB9540] = "AB9540",
+ [AB8500_VERSION_AB8540] = "AB8540",
+};
+
+static int ab8500_get_chip_id(struct device *dev)
+{
+ struct ab8500 *ab8500;
+
+ if (!dev)
+ return -EINVAL;
+ ab8500 = dev_get_drvdata(dev->parent);
+ return ab8500 ? (int)ab8500->chip_id : -EINVAL;
+}
+
+static int set_register_interruptible(struct ab8500 *ab8500, u8 bank,
+ u8 reg, u8 data)
+{
+ int ret;
+ /*
+ * Put the u8 bank and u8 register together into a an u16.
+ * The bank on higher 8 bits and register in lower 8 bits.
+ * */
+ u16 addr = ((u16)bank) << 8 | reg;
+
+ dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data);
+
+ mutex_lock(&ab8500->lock);
+
+ ret = ab8500->write(ab8500, addr, data);
+ if (ret < 0)
+ dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
+ addr, ret);
+ mutex_unlock(&ab8500->lock);
+
+ return ret;
+}
+
+static int ab8500_set_register(struct device *dev, u8 bank,
+ u8 reg, u8 value)
+{
+ struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+
+ return set_register_interruptible(ab8500, bank, reg, value);
+}
+
+static int get_register_interruptible(struct ab8500 *ab8500, u8 bank,
+ u8 reg, u8 *value)
+{
+ int ret;
+ /* put the u8 bank and u8 reg together into a an u16.
+ * bank on higher 8 bits and reg in lower */
+ u16 addr = ((u16)bank) << 8 | reg;
+
+ mutex_lock(&ab8500->lock);
+
+ ret = ab8500->read(ab8500, addr);
+ if (ret < 0)
+ dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
+ addr, ret);
+ else
+ *value = ret;
+
+ mutex_unlock(&ab8500->lock);
+ dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret);
+
+ return ret;
+}
+
+static int ab8500_get_register(struct device *dev, u8 bank,
+ u8 reg, u8 *value)
+{
+ struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+
+ return get_register_interruptible(ab8500, bank, reg, value);
+}
+
+static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank,
+ u8 reg, u8 bitmask, u8 bitvalues)
+{
+ int ret;
+ /* put the u8 bank and u8 reg together into a an u16.
+ * bank on higher 8 bits and reg in lower */
+ u16 addr = ((u16)bank) << 8 | reg;
+
+ mutex_lock(&ab8500->lock);
+
+ if (ab8500->write_masked == NULL) {
+ u8 data;
+
+ ret = ab8500->read(ab8500, addr);
+ if (ret < 0) {
+ dev_err(ab8500->dev, "failed to read reg %#x: %d\n",
+ addr, ret);
+ goto out;
+ }
+
+ data = (u8)ret;
+ data = (~bitmask & data) | (bitmask & bitvalues);
+
+ ret = ab8500->write(ab8500, addr, data);
+ if (ret < 0)
+ dev_err(ab8500->dev, "failed to write reg %#x: %d\n",
+ addr, ret);
+
+ dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr,
+ data);
+ goto out;
+ }
+ ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues);
+ if (ret < 0)
+ dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr,
+ ret);
+out:
+ mutex_unlock(&ab8500->lock);
+ return ret;
+}
+
+static int ab8500_mask_and_set_register(struct device *dev,
+ u8 bank, u8 reg, u8 bitmask, u8 bitvalues)
+{
+ struct ab8500 *ab8500 = dev_get_drvdata(dev->parent);
+
+ return mask_and_set_register_interruptible(ab8500, bank, reg,
+ bitmask, bitvalues);
+
+}
+
+static struct abx500_ops ab8500_ops = {
+ .get_chip_id = ab8500_get_chip_id,
+ .get_register = ab8500_get_register,
+ .set_register = ab8500_set_register,
+ .get_register_page = NULL,
+ .set_register_page = NULL,
+ .mask_and_set_register = ab8500_mask_and_set_register,
+ .event_registers_startup_state_get = NULL,
+ .startup_irq_enabled = NULL,
+};
+
+static void ab8500_irq_lock(struct irq_data *data)
+{
+ struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
+
+ mutex_lock(&ab8500->irq_lock);
+}
+
+static void ab8500_irq_sync_unlock(struct irq_data *data)
+{
+ struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
+ int i;
+
+ for (i = 0; i < ab8500->mask_size; i++) {
+ u8 old = ab8500->oldmask[i];
+ u8 new = ab8500->mask[i];
+ int reg;
+
+ if (new == old)
+ continue;
+
+ /*
+ * Interrupt register 12 doesn't exist prior to AB8500 version
+ * 2.0
+ */
+ if (ab8500->irq_reg_offset[i] == 11 &&
+ is_ab8500_1p1_or_earlier(ab8500))
+ continue;
+
+ ab8500->oldmask[i] = new;
+
+ reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i];
+ set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new);
+ }
+
+ mutex_unlock(&ab8500->irq_lock);
+}
+
+static void ab8500_irq_mask(struct irq_data *data)
+{
+ struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
+ int offset = data->irq - ab8500->irq_base;
+ int index = offset / 8;
+ int mask = 1 << (offset % 8);
+
+ ab8500->mask[index] |= mask;
+}
+
+static void ab8500_irq_unmask(struct irq_data *data)
+{
+ struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data);
+ int offset = data->irq - ab8500->irq_base;
+ int index = offset / 8;
+ int mask = 1 << (offset % 8);
+
+ ab8500->mask[index] &= ~mask;
+}
+
+static struct irq_chip ab8500_irq_chip = {
+ .name = "ab8500",
+ .irq_bus_lock = ab8500_irq_lock,
+ .irq_bus_sync_unlock = ab8500_irq_sync_unlock,
+ .irq_mask = ab8500_irq_mask,
+ .irq_disable = ab8500_irq_mask,
+ .irq_unmask = ab8500_irq_unmask,
+};
+
+static irqreturn_t ab8500_irq(int irq, void *dev)
+{
+ struct ab8500 *ab8500 = dev;
+ int i;
+
+ dev_vdbg(ab8500->dev, "interrupt\n");
+
+ for (i = 0; i < ab8500->mask_size; i++) {
+ int regoffset = ab8500->irq_reg_offset[i];
+ int status;
+ u8 value;
+
+ /*
+ * Interrupt register 12 doesn't exist prior to AB8500 version
+ * 2.0
+ */
+ if (regoffset == 11 && is_ab8500_1p1_or_earlier(ab8500))
+ continue;
+
+ status = get_register_interruptible(ab8500, AB8500_INTERRUPT,
+ AB8500_IT_LATCH1_REG + regoffset, &value);
+ if (status < 0 || value == 0)
+ continue;
+
+ do {
+ int bit = __ffs(value);
+ int line = i * 8 + bit;
+
+ handle_nested_irq(ab8500->irq_base + line);
+ value &= ~(1 << bit);
+ } while (value);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int ab8500_irq_init(struct ab8500 *ab8500)
+{
+ int base = ab8500->irq_base;
+ int irq;
+ int num_irqs;
+
+ if (is_ab9540(ab8500))
+ num_irqs = AB9540_NR_IRQS;
+ else if (is_ab8505(ab8500))
+ num_irqs = AB8505_NR_IRQS;
+ else
+ num_irqs = AB8500_NR_IRQS;
+
+ for (irq = base; irq < base + num_irqs; irq++) {
+ irq_set_chip_data(irq, ab8500);
+ irq_set_chip_and_handler(irq, &ab8500_irq_chip,
+ handle_simple_irq);
+ irq_set_nested_thread(irq, 1);
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, IRQF_VALID);
+#else
+ irq_set_noprobe(irq);
+#endif
+ }
+
+ return 0;
+}
+
+static void ab8500_irq_remove(struct ab8500 *ab8500)
+{
+ int base = ab8500->irq_base;
+ int irq;
+ int num_irqs;
+
+ if (is_ab9540(ab8500))
+ num_irqs = AB9540_NR_IRQS;
+ else if (is_ab8505(ab8500))
+ num_irqs = AB8505_NR_IRQS;
+ else
+ num_irqs = AB8500_NR_IRQS;
+
+ for (irq = base; irq < base + num_irqs; irq++) {
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, 0);
+#endif
+ irq_set_chip_and_handler(irq, NULL, NULL);
+ irq_set_chip_data(irq, NULL);
+ }
+}
+
+/* AB8500 GPIO Resources */
+static struct resource __devinitdata ab8500_gpio_resources[] = {
+ {
+ .name = "GPIO_INT6",
+ .start = AB8500_INT_GPIO6R,
+ .end = AB8500_INT_GPIO41F,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+/* AB9540 GPIO Resources */
+static struct resource __devinitdata ab9540_gpio_resources[] = {
+ {
+ .name = "GPIO_INT6",
+ .start = AB8500_INT_GPIO6R,
+ .end = AB8500_INT_GPIO41F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "GPIO_INT14",
+ .start = AB9540_INT_GPIO50R,
+ .end = AB9540_INT_GPIO54R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "GPIO_INT15",
+ .start = AB9540_INT_GPIO50F,
+ .end = AB9540_INT_GPIO54F,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct resource __devinitdata ab8500_gpadc_resources[] = {
+ {
+ .name = "HW_CONV_END",
+ .start = AB8500_INT_GP_HW_ADC_CONV_END,
+ .end = AB8500_INT_GP_HW_ADC_CONV_END,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "SW_CONV_END",
+ .start = AB8500_INT_GP_SW_ADC_CONV_END,
+ .end = AB8500_INT_GP_SW_ADC_CONV_END,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_rtc_resources[] = {
+ {
+ .name = "60S",
+ .start = AB8500_INT_RTC_60S,
+ .end = AB8500_INT_RTC_60S,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ALARM",
+ .start = AB8500_INT_RTC_ALARM,
+ .end = AB8500_INT_RTC_ALARM,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_poweronkey_db_resources[] = {
+ {
+ .name = "ONKEY_DBF",
+ .start = AB8500_INT_PON_KEY1DB_F,
+ .end = AB8500_INT_PON_KEY1DB_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ONKEY_DBR",
+ .start = AB8500_INT_PON_KEY1DB_R,
+ .end = AB8500_INT_PON_KEY1DB_R,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_av_acc_detect_resources[] = {
+ {
+ .name = "ACC_DETECT_1DB_F",
+ .start = AB8500_INT_ACC_DETECT_1DB_F,
+ .end = AB8500_INT_ACC_DETECT_1DB_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ACC_DETECT_1DB_R",
+ .start = AB8500_INT_ACC_DETECT_1DB_R,
+ .end = AB8500_INT_ACC_DETECT_1DB_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ACC_DETECT_21DB_F",
+ .start = AB8500_INT_ACC_DETECT_21DB_F,
+ .end = AB8500_INT_ACC_DETECT_21DB_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ACC_DETECT_21DB_R",
+ .start = AB8500_INT_ACC_DETECT_21DB_R,
+ .end = AB8500_INT_ACC_DETECT_21DB_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ACC_DETECT_22DB_F",
+ .start = AB8500_INT_ACC_DETECT_22DB_F,
+ .end = AB8500_INT_ACC_DETECT_22DB_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ACC_DETECT_22DB_R",
+ .start = AB8500_INT_ACC_DETECT_22DB_R,
+ .end = AB8500_INT_ACC_DETECT_22DB_R,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_charger_resources[] = {
+ {
+ .name = "MAIN_CH_UNPLUG_DET",
+ .start = AB8500_INT_MAIN_CH_UNPLUG_DET,
+ .end = AB8500_INT_MAIN_CH_UNPLUG_DET,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "MAIN_CHARGE_PLUG_DET",
+ .start = AB8500_INT_MAIN_CH_PLUG_DET,
+ .end = AB8500_INT_MAIN_CH_PLUG_DET,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "VBUS_DET_R",
+ .start = AB8500_INT_VBUS_DET_R,
+ .end = AB8500_INT_VBUS_DET_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "VBUS_DET_F",
+ .start = AB8500_INT_VBUS_DET_F,
+ .end = AB8500_INT_VBUS_DET_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB_LINK_STATUS",
+ .start = AB8500_INT_USB_LINK_STATUS,
+ .end = AB8500_INT_USB_LINK_STATUS,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "VBUS_OVV",
+ .start = AB8500_INT_VBUS_OVV,
+ .end = AB8500_INT_VBUS_OVV,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB_CH_TH_PROT_R",
+ .start = AB8500_INT_USB_CH_TH_PROT_R,
+ .end = AB8500_INT_USB_CH_TH_PROT_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB_CH_TH_PROT_F",
+ .start = AB8500_INT_USB_CH_TH_PROT_F,
+ .end = AB8500_INT_USB_CH_TH_PROT_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "MAIN_EXT_CH_NOT_OK",
+ .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
+ .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "MAIN_CH_TH_PROT_R",
+ .start = AB8500_INT_MAIN_CH_TH_PROT_R,
+ .end = AB8500_INT_MAIN_CH_TH_PROT_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "MAIN_CH_TH_PROT_F",
+ .start = AB8500_INT_MAIN_CH_TH_PROT_F,
+ .end = AB8500_INT_MAIN_CH_TH_PROT_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB_CHARGER_NOT_OKR",
+ .start = AB8500_INT_USB_CHARGER_NOT_OKR,
+ .end = AB8500_INT_USB_CHARGER_NOT_OKR,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "CH_WD_EXP",
+ .start = AB8500_INT_CH_WD_EXP,
+ .end = AB8500_INT_CH_WD_EXP,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_btemp_resources[] = {
+ {
+ .name = "BAT_CTRL_INDB",
+ .start = AB8500_INT_BAT_CTRL_INDB,
+ .end = AB8500_INT_BAT_CTRL_INDB,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BTEMP_LOW",
+ .start = AB8500_INT_BTEMP_LOW,
+ .end = AB8500_INT_BTEMP_LOW,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BTEMP_HIGH",
+ .start = AB8500_INT_BTEMP_HIGH,
+ .end = AB8500_INT_BTEMP_HIGH,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BTEMP_LOW_MEDIUM",
+ .start = AB8500_INT_BTEMP_LOW_MEDIUM,
+ .end = AB8500_INT_BTEMP_LOW_MEDIUM,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BTEMP_MEDIUM_HIGH",
+ .start = AB8500_INT_BTEMP_MEDIUM_HIGH,
+ .end = AB8500_INT_BTEMP_MEDIUM_HIGH,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_fg_resources[] = {
+ {
+ .name = "NCONV_ACCU",
+ .start = AB8500_INT_CCN_CONV_ACC,
+ .end = AB8500_INT_CCN_CONV_ACC,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "BATT_OVV",
+ .start = AB8500_INT_BATT_OVV,
+ .end = AB8500_INT_BATT_OVV,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "LOW_BAT_F",
+ .start = AB8500_INT_LOW_BAT_F,
+ .end = AB8500_INT_LOW_BAT_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "LOW_BAT_R",
+ .start = AB8500_INT_LOW_BAT_R,
+ .end = AB8500_INT_LOW_BAT_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "CC_INT_CALIB",
+ .start = AB8500_INT_CC_INT_CALIB,
+ .end = AB8500_INT_CC_INT_CALIB,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "CCEOC",
+ .start = AB8500_INT_CCEOC,
+ .end = AB8500_INT_CCEOC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_chargalg_resources[] = {};
+
+#ifdef CONFIG_DEBUG_FS
+static struct resource __devinitdata ab8500_debug_resources[] = {
+ {
+ .name = "IRQ_FIRST",
+ .start = AB8500_INT_MAIN_EXT_CH_NOT_OK,
+ .end = AB8500_INT_MAIN_EXT_CH_NOT_OK,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "IRQ_LAST",
+ .start = AB8500_INT_XTAL32K_KO,
+ .end = AB8500_INT_XTAL32K_KO,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+#endif
+
+static struct resource __devinitdata ab8500_usb_resources[] = {
+ {
+ .name = "ID_WAKEUP_R",
+ .start = AB8500_INT_ID_WAKEUP_R,
+ .end = AB8500_INT_ID_WAKEUP_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "ID_WAKEUP_F",
+ .start = AB8500_INT_ID_WAKEUP_F,
+ .end = AB8500_INT_ID_WAKEUP_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "VBUS_DET_F",
+ .start = AB8500_INT_VBUS_DET_F,
+ .end = AB8500_INT_VBUS_DET_F,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "VBUS_DET_R",
+ .start = AB8500_INT_VBUS_DET_R,
+ .end = AB8500_INT_VBUS_DET_R,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB_LINK_STATUS",
+ .start = AB8500_INT_USB_LINK_STATUS,
+ .end = AB8500_INT_USB_LINK_STATUS,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB_ADP_PROBE_PLUG",
+ .start = AB8500_INT_ADP_PROBE_PLUG,
+ .end = AB8500_INT_ADP_PROBE_PLUG,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "USB_ADP_PROBE_UNPLUG",
+ .start = AB8500_INT_ADP_PROBE_UNPLUG,
+ .end = AB8500_INT_ADP_PROBE_UNPLUG,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource __devinitdata ab8500_temp_resources[] = {
+ {
+ .name = "AB8500_TEMP_WARM",
+ .start = AB8500_INT_TEMP_WARM,
+ .end = AB8500_INT_TEMP_WARM,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell __devinitdata abx500_common_devs[] = {
+#ifdef CONFIG_DEBUG_FS
+ {
+ .name = "ab8500-debug",
+ .num_resources = ARRAY_SIZE(ab8500_debug_resources),
+ .resources = ab8500_debug_resources,
+ },
+#endif
+ {
+ .name = "ab8500-sysctrl",
+ },
+ {
+ .name = "ab8500-regulator",
+ },
+ {
+ .name = "ab8500-gpadc",
+ .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
+ .resources = ab8500_gpadc_resources,
+ },
+ {
+ .name = "ab8500-rtc",
+ .num_resources = ARRAY_SIZE(ab8500_rtc_resources),
+ .resources = ab8500_rtc_resources,
+ },
+ {
+ .name = "ab8500-charger",
+ .num_resources = ARRAY_SIZE(ab8500_charger_resources),
+ .resources = ab8500_charger_resources,
+ },
+ {
+ .name = "ab8500-btemp",
+ .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
+ .resources = ab8500_btemp_resources,
+ },
+ {
+ .name = "ab8500-fg",
+ .num_resources = ARRAY_SIZE(ab8500_fg_resources),
+ .resources = ab8500_fg_resources,
+ },
+ {
+ .name = "ab8500-chargalg",
+ .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
+ .resources = ab8500_chargalg_resources,
+ },
+ {
+ .name = "ab8500-acc-det",
+ .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
+ .resources = ab8500_av_acc_detect_resources,
+ },
+ {
+ .name = "ab8500-codec",
+ },
+
+ {
+ .name = "ab8500-poweron-key",
+ .num_resources = ARRAY_SIZE(ab8500_poweronkey_db_resources),
+ .resources = ab8500_poweronkey_db_resources,
+ },
+ {
+ .name = "ab8500-pwm",
+ .id = 1,
+ },
+ {
+ .name = "ab8500-pwm",
+ .id = 2,
+ },
+ {
+ .name = "ab8500-pwm",
+ .id = 3,
+ },
+ { .name = "ab8500-leds", },
+ {
+ .name = "ab8500-denc",
+ },
+ {
+ .name = "ab8500-temp",
+ .num_resources = ARRAY_SIZE(ab8500_temp_resources),
+ .resources = ab8500_temp_resources,
+ },
+};
+
+static struct mfd_cell __devinitdata ab8500_devs[] = {
+ {
+ .name = "ab8500-gpio",
+ .num_resources = ARRAY_SIZE(ab8500_gpio_resources),
+ .resources = ab8500_gpio_resources,
+ },
+ {
+ .name = "ab8500-usb",
+ .num_resources = ARRAY_SIZE(ab8500_usb_resources),
+ .resources = ab8500_usb_resources,
+ },
+};
+
+static struct mfd_cell __devinitdata ab9540_devs[] = {
+ {
+ .name = "ab8500-gpio",
+ .num_resources = ARRAY_SIZE(ab9540_gpio_resources),
+ .resources = ab9540_gpio_resources,
+ },
+ {
+ .name = "ab9540-usb",
+ .num_resources = ARRAY_SIZE(ab8500_usb_resources),
+ .resources = ab8500_usb_resources,
+ },
+};
+
+static ssize_t show_chip_id(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ab8500 *ab8500;
+
+ ab8500 = dev_get_drvdata(dev);
+ return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
+}
+
+/*
+ * ab8500 has switched off due to (SWITCH_OFF_STATUS):
+ * 0x01 Swoff bit programming
+ * 0x02 Thermal protection activation
+ * 0x04 Vbat lower then BattOk falling threshold
+ * 0x08 Watchdog expired
+ * 0x10 Non presence of 32kHz clock
+ * 0x20 Battery level lower than power on reset threshold
+ * 0x40 Power on key 1 pressed longer than 10 seconds
+ * 0x80 DB8500 thermal shutdown
+ */
+static ssize_t show_switch_off_status(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ u8 value;
+ struct ab8500 *ab8500;
+
+ ab8500 = dev_get_drvdata(dev);
+ ret = get_register_interruptible(ab8500, AB8500_RTC,
+ AB8500_SWITCH_OFF_STATUS, &value);
+ if (ret < 0)
+ return ret;
+ return sprintf(buf, "%#x\n", value);
+}
+
+/*
+ * ab8500 has turned on due to (TURN_ON_STATUS):
+ * 0x01 PORnVbat
+ * 0x02 PonKey1dbF
+ * 0x04 PonKey2dbF
+ * 0x08 RTCAlarm
+ * 0x10 MainChDet
+ * 0x20 VbusDet
+ * 0x40 UsbIDDetect
+ * 0x80 Reserved
+ */
+static ssize_t show_turn_on_status(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ u8 value;
+ struct ab8500 *ab8500;
+
+ ab8500 = dev_get_drvdata(dev);
+ ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
+ AB8500_TURN_ON_STATUS, &value);
+ if (ret < 0)
+ return ret;
+ return sprintf(buf, "%#x\n", value);
+}
+
+static ssize_t show_ab9540_dbbrstn(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ab8500 *ab8500;
+ int ret;
+ u8 value;
+
+ ab8500 = dev_get_drvdata(dev);
+
+ ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2,
+ AB9540_MODEM_CTRL2_REG, &value);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n",
+ (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0);
+}
+
+static ssize_t store_ab9540_dbbrstn(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct ab8500 *ab8500;
+ int ret = count;
+ int err;
+ u8 bitvalues;
+
+ ab8500 = dev_get_drvdata(dev);
+
+ if (count > 0) {
+ switch (buf[0]) {
+ case '0':
+ bitvalues = 0;
+ break;
+ case '1':
+ bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT;
+ break;
+ default:
+ goto exit;
+ }
+
+ err = mask_and_set_register_interruptible(ab8500,
+ AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG,
+ AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues);
+ if (err)
+ dev_info(ab8500->dev,
+ "Failed to set DBBRSTN %c, err %#x\n",
+ buf[0], err);
+ }
+
+exit:
+ return ret;
+}
+
+static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
+static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
+static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
+static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
+ show_ab9540_dbbrstn, store_ab9540_dbbrstn);
+
+static struct attribute *ab8500_sysfs_entries[] = {
+ &dev_attr_chip_id.attr,
+ &dev_attr_switch_off_status.attr,
+ &dev_attr_turn_on_status.attr,
+ NULL,
+};
+
+static struct attribute *ab9540_sysfs_entries[] = {
+ &dev_attr_chip_id.attr,
+ &dev_attr_switch_off_status.attr,
+ &dev_attr_turn_on_status.attr,
+ &dev_attr_dbbrstn.attr,
+ NULL,
+};
+
+static struct attribute_group ab8500_attr_group = {
+ .attrs = ab8500_sysfs_entries,
+};
+
+static struct attribute_group ab9540_attr_group = {
+ .attrs = ab9540_sysfs_entries,
+};
+
+int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
+{
+ struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
+ int ret;
+ int i;
+ u8 value;
+
+ if (plat)
+ ab8500->irq_base = plat->irq_base;
+
+ mutex_init(&ab8500->lock);
+ mutex_init(&ab8500->irq_lock);
+
+ if (version != AB8500_VERSION_UNDEFINED)
+ ab8500->version = version;
+ else {
+ ret = get_register_interruptible(ab8500, AB8500_MISC,
+ AB8500_IC_NAME_REG, &value);
+ if (ret < 0)
+ return ret;
+
+ ab8500->version = value;
+ }
+
+ ret = get_register_interruptible(ab8500, AB8500_MISC,
+ AB8500_REV_REG, &value);
+ if (ret < 0)
+ return ret;
+
+ ab8500->chip_id = value;
+
+ dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n",
+ ab8500_version_str[ab8500->version],
+ ab8500->chip_id >> 4,
+ ab8500->chip_id & 0x0F);
+
+ /* Configure AB8500 or AB9540 IRQ */
+ if (is_ab9540(ab8500) || is_ab8505(ab8500)) {
+ ab8500->mask_size = AB9540_NUM_IRQ_REGS;
+ ab8500->irq_reg_offset = ab9540_irq_regoffset;
+ } else {
+ ab8500->mask_size = AB8500_NUM_IRQ_REGS;
+ ab8500->irq_reg_offset = ab8500_irq_regoffset;
+ }
+ ab8500->mask = kzalloc(ab8500->mask_size, GFP_KERNEL);
+ if (!ab8500->mask)
+ return -ENOMEM;
+ ab8500->oldmask = kzalloc(ab8500->mask_size, GFP_KERNEL);
+ if (!ab8500->oldmask) {
+ ret = -ENOMEM;
+ goto out_freemask;
+ }
+ /*
+ * ab8500 has switched off due to (SWITCH_OFF_STATUS):
+ * 0x01 Swoff bit programming
+ * 0x02 Thermal protection activation
+ * 0x04 Vbat lower then BattOk falling threshold
+ * 0x08 Watchdog expired
+ * 0x10 Non presence of 32kHz clock
+ * 0x20 Battery level lower than power on reset threshold
+ * 0x40 Power on key 1 pressed longer than 10 seconds
+ * 0x80 DB8500 thermal shutdown
+ */
+
+ ret = get_register_interruptible(ab8500, AB8500_RTC,
+ AB8500_SWITCH_OFF_STATUS, &value);
+ if (ret < 0)
+ return ret;
+ dev_info(ab8500->dev, "switch off status: %#x", value);
+
+ if (plat && plat->init)
+ plat->init(ab8500);
+
+ /* Clear and mask all interrupts */
+ for (i = 0; i < ab8500->mask_size; i++) {
+ /*
+ * Interrupt register 12 doesn't exist prior to AB8500 version
+ * 2.0
+ */
+ if (ab8500->irq_reg_offset[i] == 11 &&
+ is_ab8500_1p1_or_earlier(ab8500))
+ continue;
+
+ get_register_interruptible(ab8500, AB8500_INTERRUPT,
+ AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i],
+ &value);
+ set_register_interruptible(ab8500, AB8500_INTERRUPT,
+ AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff);
+ }
+
+ ret = abx500_register_ops(ab8500->dev, &ab8500_ops);
+ if (ret)
+ goto out_freeoldmask;
+
+ for (i = 0; i < ab8500->mask_size; i++)
+ ab8500->mask[i] = ab8500->oldmask[i] = 0xff;
+
+ if (ab8500->irq_base) {
+ ret = ab8500_irq_init(ab8500);
+ if (ret)
+ goto out_freeoldmask;
+
+ ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq,
+ IRQF_ONESHOT | IRQF_NO_SUSPEND,
+ "ab8500", ab8500);
+ if (ret)
+ goto out_removeirq;
+ }
+
+ ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
+ ARRAY_SIZE(abx500_common_devs), NULL,
+ ab8500->irq_base);
+
+ if (ret)
+ goto out_freeirq;
+
+ if (is_ab9540(ab8500))
+ ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
+ ARRAY_SIZE(ab9540_devs), NULL,
+ ab8500->irq_base);
+ else
+ ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
+ ARRAY_SIZE(ab9540_devs), NULL,
+ ab8500->irq_base);
+ if (ret)
+ goto out_freeirq;
+
+ if (is_ab9540(ab8500))
+ ret = sysfs_create_group(&ab8500->dev->kobj,
+ &ab9540_attr_group);
+ else
+ ret = sysfs_create_group(&ab8500->dev->kobj,
+ &ab8500_attr_group);
+ if (ret)
+ dev_err(ab8500->dev, "error creating sysfs entries\n");
+ else
+ return ret;
+
+out_freeirq:
+ if (ab8500->irq_base)
+ free_irq(ab8500->irq, ab8500);
+out_removeirq:
+ if (ab8500->irq_base)
+ ab8500_irq_remove(ab8500);
+out_freeoldmask:
+ kfree(ab8500->oldmask);
+out_freemask:
+ kfree(ab8500->mask);
+
+ return ret;
+}
+
+int __devexit ab8500_exit(struct ab8500 *ab8500)
+{
+ if (is_ab9540(ab8500))
+ sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
+ else
+ sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
+ mfd_remove_devices(ab8500->dev);
+ if (ab8500->irq_base) {
+ free_irq(ab8500->irq, ab8500);
+ ab8500_irq_remove(ab8500);
+ }
+ kfree(ab8500->oldmask);
+ kfree(ab8500->mask);
+
+ return 0;
+}
+
+MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
+MODULE_DESCRIPTION("AB8500 MFD core");
+MODULE_LICENSE("GPL v2");
generated by cgit (git 2.34.1) at 2024-12-20 12:21:01 +0000