415 lines
10 KiB
C
415 lines
10 KiB
C
#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/reboot.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/mfd/core.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/err.h>
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#include <linux/power/aw_pm.h>
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#include "../axp-core.h"
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#include "../axp-charger.h"
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#include "axp20.h"
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static struct axp_dev *axp20_pm_power;
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struct axp_config_info axp20_config;
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struct wakeup_source *axp20_ws;
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static int axp20_pmu_num;
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static struct axp_regmap_irq_chip axp20_regmap_irq_chip = {
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.name = "axp20_irq_chip",
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.status_base = AXP20_INTSTS1,
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.enable_base = AXP20_INTEN1,
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.num_regs = 5,
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};
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static struct resource axp20_pek_resources[] = {
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{AXP20_IRQ_PEKRE, AXP20_IRQ_PEKRE, "PEK_DBR", IORESOURCE_IRQ,},
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{AXP20_IRQ_PEKFE, AXP20_IRQ_PEKFE, "PEK_DBF", IORESOURCE_IRQ,},
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};
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static struct resource axp20_charger_resources[] = {
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{AXP20_IRQ_USBIN, AXP20_IRQ_USBIN, "usb in", IORESOURCE_IRQ,},
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{AXP20_IRQ_USBRE, AXP20_IRQ_USBRE, "usb out", IORESOURCE_IRQ,},
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{AXP20_IRQ_ACIN, AXP20_IRQ_ACIN, "ac in", IORESOURCE_IRQ,},
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{AXP20_IRQ_ACRE, AXP20_IRQ_ACRE, "ac out", IORESOURCE_IRQ,},
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{AXP20_IRQ_BATIN, AXP20_IRQ_BATIN, "bat in", IORESOURCE_IRQ,},
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{AXP20_IRQ_BATRE, AXP20_IRQ_BATRE, "bat out", IORESOURCE_IRQ,},
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{AXP20_IRQ_TEMLO, AXP20_IRQ_TEMLO, "bat temp low", IORESOURCE_IRQ,},
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{AXP20_IRQ_TEMOV, AXP20_IRQ_TEMOV, "bat temp over", IORESOURCE_IRQ,},
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{AXP20_IRQ_CHAST, AXP20_IRQ_CHAST, "charging", IORESOURCE_IRQ,},
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{AXP20_IRQ_CHAOV, AXP20_IRQ_CHAOV, "charge over", IORESOURCE_IRQ,},
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};
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static struct mfd_cell axp20_cells[] = {
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{
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.name = "axp20-powerkey",
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.num_resources = ARRAY_SIZE(axp20_pek_resources),
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.resources = axp20_pek_resources,
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},
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{
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.name = "axp20-regulator",
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},
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{
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.name = "axp20-charger",
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.num_resources = ARRAY_SIZE(axp20_charger_resources),
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.resources = axp20_charger_resources,
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},
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{
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.name = "axp20-gpio",
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},
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};
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void axp20_power_off(void)
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{
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uint8_t val;
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if (axp20_config.pmu_pwroff_vol >= 2600
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&& axp20_config.pmu_pwroff_vol <= 3300) {
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if (axp20_config.pmu_pwroff_vol > 3200)
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val = 0x7;
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else if (axp20_config.pmu_pwroff_vol > 3100)
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val = 0x6;
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else if (axp20_config.pmu_pwroff_vol > 3000)
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val = 0x5;
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else if (axp20_config.pmu_pwroff_vol > 2900)
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val = 0x4;
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else if (axp20_config.pmu_pwroff_vol > 2800)
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val = 0x3;
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else if (axp20_config.pmu_pwroff_vol > 2700)
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val = 0x2;
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else if (axp20_config.pmu_pwroff_vol > 2600)
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val = 0x1;
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else
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val = 0x0;
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axp_regmap_update(axp20_pm_power->regmap,
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AXP20_VOFF_SET, val, 0x7);
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}
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/* led auto */
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axp_regmap_clr_bits(axp20_pm_power->regmap, 0x32, 0x38);
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axp_regmap_clr_bits(axp20_pm_power->regmap, 0xb9, 0x80);
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pr_info("[axp] send power-off command!\n");
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mdelay(20);
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if (axp20_config.power_start != 1) {
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axp_regmap_write(axp20_pm_power->regmap, AXP20_INTSTS3, 0x03);
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axp_regmap_read(axp20_pm_power->regmap, AXP20_STATUS, &val);
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if (val & 0xF0) {
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axp_regmap_read(axp20_pm_power->regmap,
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AXP20_MODE_CHGSTATUS, &val);
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if (val & 0x20) {
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pr_info("[axp] set flag!\n");
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axp_regmap_write(axp20_pm_power->regmap,
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AXP20_DATA_BUFFERC, 0x0f);
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mdelay(20);
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pr_info("[axp] reboot!\n");
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machine_restart(NULL);
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pr_warn("[axp] warning!!! arch can't reboot,\"\
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\" maybe some error happend!\n");
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}
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}
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}
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axp_regmap_write(axp20_pm_power->regmap, AXP20_DATA_BUFFERC, 0x00);
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axp_regmap_set_bits(axp20_pm_power->regmap, AXP20_OFF_CTL, 0x80);
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mdelay(20);
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pr_warn("[axp] warning!!! axp can't power-off,\"\
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\" maybe some error happend!\n");
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}
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static int axp20_init_chip(struct axp_dev *axp20)
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{
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uint8_t chip_id, dcdc2_ctl;
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int err;
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err = axp_regmap_read(axp20->regmap, AXP20_IC_TYPE, &chip_id);
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if (err) {
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pr_err("[%s] try to read chip id failed!\n",
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axp_name[axp20_pmu_num]);
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return err;
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}
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if ((chip_id & 0x0f) == 0x1)
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pr_info("[%s] chip id detect 0x%x !\n",
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axp_name[axp20_pmu_num], chip_id);
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else
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pr_info("[%s] chip id not detect 0x%x !\n",
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axp_name[axp20_pmu_num], chip_id);
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/* enable dcdc2 dvm */
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err = axp_regmap_read(axp20->regmap, AXP20_LDO3_DC2_DVM, &dcdc2_ctl);
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if (err) {
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pr_err("[%s] try to read dcdc2 dvm failed!\n",
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axp_name[axp20_pmu_num]);
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return err;
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}
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dcdc2_ctl |= (0x1<<2);
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err = axp_regmap_write(axp20->regmap, AXP20_LDO3_DC2_DVM, dcdc2_ctl);
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if (err) {
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pr_err("[%s] try to enable dcdc2 dvm failed!\n",
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axp_name[axp20_pmu_num]);
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return err;
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}
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pr_info("[%s] enable dcdc2 dvm.\n", axp_name[axp20_pmu_num]);
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/*init 16's reset pmu en */
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if (axp20_config.pmu_reset)
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axp_regmap_set_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x08);
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else
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axp_regmap_clr_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x08);
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/*init irq wakeup en*/
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if (axp20_config.pmu_irq_wakeup)
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axp_regmap_set_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x80);
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else
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axp_regmap_clr_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x80);
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/*init pmu over temperature protection*/
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if (axp20_config.pmu_hot_shutdown)
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axp_regmap_set_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x04);
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else
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axp_regmap_clr_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x04);
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/*init inshort status*/
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if (axp20_config.pmu_inshort)
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axp_regmap_set_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x60);
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else
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axp_regmap_clr_bits(axp20->regmap, AXP20_HOTOVER_CTL, 0x60);
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return 0;
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}
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static void axp20_wakeup_event(void)
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{
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__pm_wakeup_event(axp20_ws, 0);
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}
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static s32 axp20_usb_det(void)
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{
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u8 value = 0;
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int ret = 0;
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axp_regmap_read(axp20_pm_power->regmap, AXP20_STATUS, &value);
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if (value & 0x10) {
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axp_usb_connect = 1;
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ret = 1;
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}
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return ret;
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}
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static s32 axp20_usb_vbus_output(int high)
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{
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return 0;
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}
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static int axp20_cfg_pmux_para(int num, struct aw_pm_info *api, int *pmu_id)
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{
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char name[8];
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struct device_node *np;
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sprintf(name, "pmu%d", num);
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np = of_find_node_by_type(NULL, name);
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if (NULL == np) {
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pr_err("can not find device_type for %s\n", name);
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return -1;
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}
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if (!of_device_is_available(np)) {
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pr_err("can not find node for %s\n", name);
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return -1;
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}
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api->pmu_arg.twi_port = axp20_pm_power->regmap->client->adapter->nr;
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api->pmu_arg.dev_addr = axp20_pm_power->regmap->client->addr;
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*pmu_id = axp20_config.pmu_id;
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return 0;
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}
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static const char *axp20_get_pmu_name(void)
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{
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return axp_name[axp20_pmu_num];
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}
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static struct axp_dev *axp20_get_pmu_dev(void)
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{
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return axp20_pm_power;
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}
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struct axp_platform_ops axp20_plat_ops = {
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.usb_det = axp20_usb_det,
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.usb_vbus_output = axp20_usb_vbus_output,
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.cfg_pmux_para = axp20_cfg_pmux_para,
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.get_pmu_name = axp20_get_pmu_name,
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.get_pmu_dev = axp20_get_pmu_dev,
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.powerkey_name = {
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"axp209-powerkey"
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},
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.charger_name = {
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"axp209-charger"
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},
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.regulator_name = {
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"axp209-regulator"
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},
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.gpio_name = {
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"axp209-gpio"
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},
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};
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static const struct i2c_device_id axp20_id_table[] = {
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{ "axp209", 0 },
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{}
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};
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static const struct of_device_id axp20_dt_ids[] = {
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{ .compatible = "axp209", },
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{},
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};
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MODULE_DEVICE_TABLE(of, axp20_dt_ids);
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static int axp20_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int ret;
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struct axp_dev *axp20;
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struct device_node *node = client->dev.of_node;
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axp20_pmu_num = axp_get_pmu_num(axp20_dt_ids, ARRAY_SIZE(axp20_dt_ids));
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if (axp20_pmu_num < 0) {
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pr_err("%s get pmu num failed\n", __func__);
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return axp20_pmu_num;
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}
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if (node) {
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/* get dt and sysconfig */
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if (!of_device_is_available(node)) {
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axp20_config.pmu_used = 0;
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pr_err("%s: pmu_used = %u\n", __func__,
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axp20_config.pmu_used);
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return -EPERM;
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} else {
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axp20_config.pmu_used = 1;
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ret = axp_dt_parse(node, axp20_pmu_num, &axp20_config);
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if (ret) {
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pr_err("%s parse device tree err\n", __func__);
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return -EINVAL;
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}
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}
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} else {
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pr_err("AXP20x device tree err!\n");
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return -EBUSY;
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}
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axp20 = devm_kzalloc(&client->dev, sizeof(*axp20), GFP_KERNEL);
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if (!axp20)
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return -ENOMEM;
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axp20->dev = &client->dev;
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axp20->nr_cells = ARRAY_SIZE(axp20_cells);
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axp20->cells = axp20_cells;
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axp20->pmu_num = axp20_pmu_num;
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ret = axp_mfd_cell_name_init(&axp20_plat_ops,
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ARRAY_SIZE(axp20_dt_ids), axp20->pmu_num,
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axp20->nr_cells, axp20->cells);
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if (ret)
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return ret;
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axp20->regmap = axp_regmap_init_i2c(&client->dev);
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if (IS_ERR(axp20->regmap)) {
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ret = PTR_ERR(axp20->regmap);
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dev_err(&client->dev, "regmap init failed: %d\n", ret);
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return ret;
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}
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ret = axp20_init_chip(axp20);
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if (ret)
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return ret;
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ret = axp_mfd_add_devices(axp20);
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if (ret) {
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dev_err(axp20->dev, "failed to add MFD devices: %d\n", ret);
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return ret;
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}
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axp20->irq_data = axp_irq_chip_register(axp20->regmap, client->irq,
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IRQF_SHARED
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| IRQF_DISABLED
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| IRQF_NO_SUSPEND,
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&axp20_regmap_irq_chip,
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axp20_wakeup_event);
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if (IS_ERR(axp20->irq_data)) {
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ret = PTR_ERR(axp20->irq_data);
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dev_err(&client->dev, "axp init irq failed: %d\n", ret);
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return ret;
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}
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axp20_pm_power = axp20;
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if (!pm_power_off)
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pm_power_off = axp20_power_off;
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axp_platform_ops_set(axp20->pmu_num, &axp20_plat_ops);
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axp20_ws = wakeup_source_register("axp20_wakeup_source");
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return 0;
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}
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static int axp20_remove(struct i2c_client *client)
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{
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struct axp_dev *axp20 = i2c_get_clientdata(client);
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if (axp20 == axp20_pm_power) {
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axp20_pm_power = NULL;
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pm_power_off = NULL;
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}
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axp_mfd_remove_devices(axp20);
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axp_irq_chip_unregister(client->irq, axp20->irq_data);
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return 0;
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}
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static struct i2c_driver axp20_driver = {
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.driver = {
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.name = "axp20",
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.owner = THIS_MODULE,
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.of_match_table = axp20_dt_ids,
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},
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.probe = axp20_probe,
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.remove = axp20_remove,
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.id_table = axp20_id_table,
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};
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static int __init axp20_i2c_init(void)
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{
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int ret;
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ret = i2c_add_driver(&axp20_driver);
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if (ret != 0)
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pr_err("Failed to register axp20 I2C driver: %d\n", ret);
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return ret;
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}
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subsys_initcall(axp20_i2c_init);
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static void __exit axp20_i2c_exit(void)
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{
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i2c_del_driver(&axp20_driver);
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}
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module_exit(axp20_i2c_exit);
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MODULE_DESCRIPTION("PMIC Driver for AXP20X");
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MODULE_AUTHOR("Qin <qinyongshen@allwinnertech.com>");
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MODULE_LICENSE("GPL");
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