504 lines
12 KiB
C
504 lines
12 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_irq.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 "../axp-regulator.h"
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#include "axp22.h"
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#include "axp22-regu.h"
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static struct axp_dev *axp22_pm_power;
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struct axp_config_info axp22_config;
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struct wakeup_source *axp22_ws;
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static int axp22_pmu_num;
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static struct axp_regmap_irq_chip axp22_regmap_irq_chip = {
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.name = "axp22_irq_chip",
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.status_base = AXP22_INTSTS1,
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.enable_base = AXP22_INTEN1,
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.num_regs = 5,
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};
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static struct resource axp22_pek_resources[] = {
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{AXP22_IRQ_PEKRE, AXP22_IRQ_PEKRE, "PEK_DBR", IORESOURCE_IRQ,},
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{AXP22_IRQ_PEKFE, AXP22_IRQ_PEKFE, "PEK_DBF", IORESOURCE_IRQ,},
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};
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static struct resource axp22_charger_resources[] = {
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{AXP22_IRQ_USBIN, AXP22_IRQ_USBIN, "usb in", IORESOURCE_IRQ,},
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{AXP22_IRQ_USBRE, AXP22_IRQ_USBRE, "usb out", IORESOURCE_IRQ,},
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{AXP22_IRQ_ACIN, AXP22_IRQ_ACIN, "ac in", IORESOURCE_IRQ,},
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{AXP22_IRQ_ACRE, AXP22_IRQ_ACRE, "ac out", IORESOURCE_IRQ,},
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{AXP22_IRQ_BATIN, AXP22_IRQ_BATIN, "bat in", IORESOURCE_IRQ,},
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{AXP22_IRQ_BATRE, AXP22_IRQ_BATRE, "bat out", IORESOURCE_IRQ,},
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{AXP22_IRQ_TEMLO, AXP22_IRQ_TEMLO, "bat templow", IORESOURCE_IRQ,},
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{AXP22_IRQ_TEMOV, AXP22_IRQ_TEMOV, "bat tempover", IORESOURCE_IRQ,},
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{AXP22_IRQ_CHAST, AXP22_IRQ_CHAST, "charging", IORESOURCE_IRQ,},
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{AXP22_IRQ_CHAOV, AXP22_IRQ_CHAOV, "charge over", IORESOURCE_IRQ,},
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{AXP22_IRQ_LOWN1, AXP22_IRQ_LOWN1, "low warning1", IORESOURCE_IRQ,},
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{AXP22_IRQ_LOWN2, AXP22_IRQ_LOWN2, "low warning2", IORESOURCE_IRQ,},
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};
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static struct resource axp22_gpio_resources[] = {
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{AXP22_IRQ_GPIO0, AXP22_IRQ_GPIO0, "gpio0", IORESOURCE_IRQ,},
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{AXP22_IRQ_GPIO1, AXP22_IRQ_GPIO1, "gpio1", IORESOURCE_IRQ,},
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};
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static struct mfd_cell axp22_cells[] = {
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{
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.name = "axp22-powerkey",
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.num_resources = ARRAY_SIZE(axp22_pek_resources),
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.resources = axp22_pek_resources,
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},
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{
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.name = "axp22-regulator",
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},
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{
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.name = "axp22-charger",
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.num_resources = ARRAY_SIZE(axp22_charger_resources),
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.resources = axp22_charger_resources,
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},
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{
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.name = "axp22-gpio",
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.num_resources = ARRAY_SIZE(axp22_gpio_resources),
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.resources = axp22_gpio_resources,
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},
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};
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void axp22_power_off(void)
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{
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uint8_t val;
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pr_info("[axp] send power-off command!\n");
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mdelay(20);
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if (axp22_config.power_start != 1) {
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axp_regmap_read(axp22_pm_power->regmap, AXP22_STATUS, &val);
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if (val & 0xF0) {
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axp_regmap_read(axp22_pm_power->regmap,
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AXP22_MODE_CHGSTATUS, &val);
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if ((axp22_config.pmu_bat_unused == 0)
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&& (val & 0x20)
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&& (val & 0x10)) {
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pr_info("[axp] set flag!\n");
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axp_regmap_read(axp22_pm_power->regmap,
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AXP22_BUFFERC, &val);
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if (0x0d != val)
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axp_regmap_write(axp22_pm_power->regmap,
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AXP22_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_read(axp22_pm_power->regmap, AXP22_BUFFERC, &val);
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if (0x0d != val)
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axp_regmap_write(axp22_pm_power->regmap, AXP22_BUFFERC, 0x00);
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mdelay(20);
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axp_regmap_set_bits(axp22_pm_power->regmap, AXP22_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 axp22_init_chip(struct axp_dev *axp22)
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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(axp22->regmap, AXP22_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[axp22_pmu_num]);
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return err;
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}
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if (((chip_id & 0xc0) == 0x00) &&
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(((chip_id & 0x0f) == 0x06)
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|| ((chip_id & 0x0f) == 0x07)
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|| ((chip_id & 0xff) == 0x42))
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) {
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if ((chip_id & 0x0f) == 0x07)
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axp22_need_save_regulator = 1;
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pr_info("[%s] chip id detect 0x%x !\n",
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axp_name[axp22_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[axp22_pmu_num], chip_id);
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}
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/* enable dcdc2 dvm */
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err = axp_regmap_read(axp22->regmap, AXP22_DC23_DVM_CTL, &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[axp22_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(axp22->regmap, AXP22_DC23_DVM_CTL, 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[axp22_pmu_num]);
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return err;
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}
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pr_info("[%s] enable dcdc2 dvm.\n",
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axp_name[axp22_pmu_num]);
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/*init N_VBUSEN status*/
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if (axp22_config.pmu_vbusen_func)
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axp_regmap_set_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x10);
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else
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axp_regmap_clr_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x10);
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/*init 16's reset pmu en */
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if (axp22_config.pmu_reset)
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axp_regmap_set_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x08);
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else
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axp_regmap_clr_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x08);
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/*init irq wakeup en*/
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if (axp22_config.pmu_irq_wakeup)
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axp_regmap_set_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x80);
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else
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axp_regmap_clr_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x80);
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/*init pmu over temperature protection*/
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if (axp22_config.pmu_hot_shutdown)
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axp_regmap_set_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x04);
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else
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axp_regmap_clr_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x04);
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/*init inshort status*/
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if (axp22_config.pmu_inshort)
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axp_regmap_set_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x60);
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else
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axp_regmap_clr_bits(axp22->regmap, AXP22_HOTOVER_CTL, 0x60);
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return 0;
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}
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static void axp22_wakeup_event(void)
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{
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__pm_wakeup_event(axp22_ws, 0);
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}
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static s32 axp22_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(axp22_pm_power->regmap, AXP22_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 axp22_usb_vbus_output(int high)
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{
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u8 ret = 0;
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ret = axp_regmap_clr_bits_sync(axp22_pm_power->regmap,
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AXP22_HOTOVER_CTL, 0x10);
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if (ret)
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return ret;
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if (high)
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ret = axp_regmap_set_bits_sync(axp22_pm_power->regmap,
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AXP22_IPS_SET, 0x04);
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else
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ret = axp_regmap_clr_bits_sync(axp22_pm_power->regmap,
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AXP22_IPS_SET, 0x04);
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return ret;
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}
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static int axp22_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 = axp22_pm_power->regmap->client->adapter->nr;
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api->pmu_arg.dev_addr = axp22_pm_power->regmap->client->addr;
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*pmu_id = axp22_config.pmu_id;
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return 0;
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}
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static const char *axp22_get_pmu_name(void)
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{
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return axp_name[axp22_pmu_num];
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}
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static struct axp_dev *axp22_get_pmu_dev(void)
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{
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return axp22_pm_power;
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}
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struct axp_platform_ops axp22_platform_ops = {
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.usb_det = axp22_usb_det,
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.usb_vbus_output = axp22_usb_vbus_output,
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.cfg_pmux_para = axp22_cfg_pmux_para,
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.get_pmu_name = axp22_get_pmu_name,
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.get_pmu_dev = axp22_get_pmu_dev,
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.pmu_regulator_save = axp22_regulator_save,
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.pmu_regulator_restore = axp22_regulator_restore,
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.powerkey_name = {
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"axp221s-powerkey",
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"axp227-powerkey",
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"axp223-powerkey"
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},
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.charger_name = {
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"axp221s-charger",
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"axp227-charger",
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"axp223-charger"
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},
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.regulator_name = {
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"axp221s-regulator",
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"axp227-regulator",
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"axp223-regulator"
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},
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.gpio_name = {
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"axp221s-gpio",
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"axp227-gpio",
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"axp223-gpio"
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},
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};
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static const struct of_device_id axp22_dt_ids[] = {
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{ .compatible = "axp221s", },
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{ .compatible = "axp227", },
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{ .compatible = "axp223", },
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{},
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};
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MODULE_DEVICE_TABLE(of, axp22_dt_ids);
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#ifdef CONFIG_AXP_TWI_USED
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static int axp22_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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#else
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static int axp22_probe(struct platform_device *pdev)
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#endif
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{
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int ret;
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struct axp_dev *axp22;
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struct device_node *node;
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struct device *device;
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#ifdef CONFIG_AXP_TWI_USED
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node = client->dev.of_node;
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device = &client->dev;
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#else
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node = pdev->dev.of_node;
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device = &pdev->dev;
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#endif
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axp22_pmu_num = axp_get_pmu_num(axp22_dt_ids, ARRAY_SIZE(axp22_dt_ids));
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if (axp22_pmu_num < 0) {
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pr_err("%s get pmu num failed\n", __func__);
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return axp22_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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axp22_config.pmu_used = 0;
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pr_err("%s: pmu_used = %u\n", __func__,
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axp22_config.pmu_used);
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return -EPERM;
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} else {
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axp22_config.pmu_used = 1;
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ret = axp_dt_parse(node, axp22_pmu_num, &axp22_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("AXP22x device tree err!\n");
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return -EBUSY;
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}
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axp22 = devm_kzalloc(device, sizeof(*axp22), GFP_KERNEL);
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if (!axp22)
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return -ENOMEM;
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axp22->dev = device;
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axp22->nr_cells = ARRAY_SIZE(axp22_cells);
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axp22->cells = axp22_cells;
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axp22->pmu_num = axp22_pmu_num;
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ret = axp_mfd_cell_name_init(&axp22_platform_ops,
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ARRAY_SIZE(axp22_dt_ids), axp22->pmu_num,
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axp22->nr_cells, axp22->cells);
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if (ret)
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return ret;
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#ifdef CONFIG_AXP_TWI_USED
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axp22->regmap = axp_regmap_init_i2c(device);
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#else
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axp22->regmap = axp_regmap_init_arisc_rsb(device, AXP22_RSB_RTSADDR);
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#endif
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if (IS_ERR(axp22->regmap)) {
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ret = PTR_ERR(axp22->regmap);
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dev_err(device, "regmap init failed: %d\n", ret);
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return ret;
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}
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#ifdef CONFIG_AXP_TWI_USED
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i2c_set_clientdata(client, axp22);
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#else
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platform_set_drvdata(pdev, axp22);
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#endif
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ret = axp22_init_chip(axp22);
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if (ret)
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return ret;
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axp22_pm_power = axp22;
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axp_platform_ops_set(axp22->pmu_num, &axp22_platform_ops);
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ret = axp_mfd_add_devices(axp22);
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if (ret) {
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dev_err(axp22->dev, "failed to add MFD devices: %d\n", ret);
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return ret;
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}
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#ifdef CONFIG_AXP_TWI_USED
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axp22->irq = client->irq;
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#else
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axp22->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
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#endif
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axp22->irq_data = axp_irq_chip_register(axp22->regmap, axp22->irq,
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IRQF_SHARED
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| IRQF_DISABLED
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| IRQF_NO_SUSPEND,
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&axp22_regmap_irq_chip,
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axp22_wakeup_event);
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if (IS_ERR(axp22->irq_data)) {
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ret = PTR_ERR(axp22->irq_data);
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dev_err(device, "axp init irq failed: %d\n", ret);
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return ret;
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}
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if (!pm_power_off)
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pm_power_off = axp22_power_off;
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axp22_ws = wakeup_source_register("axp22_wakeup_source");
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return 0;
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}
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#ifdef CONFIG_AXP_TWI_USED
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static int axp22_remove(struct i2c_client *client)
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#else
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static int axp22_remove(struct platform_device *pdev)
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#endif
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{
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struct axp_dev *axp22;
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#ifdef CONFIG_AXP_TWI_USED
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axp22 = i2c_get_clientdata(client);
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#else
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axp22 = platform_get_drvdata(pdev);
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#endif
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if (axp22 == axp22_pm_power) {
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axp22_pm_power = NULL;
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pm_power_off = NULL;
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}
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axp_mfd_remove_devices(axp22);
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axp_irq_chip_unregister(axp22->irq, axp22->irq_data);
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return 0;
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}
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static const struct i2c_device_id axp22_id_table[] = {
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{ "axp221s", 0 },
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{ "axp227", 0 },
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{ "axp223", 0 },
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{}
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};
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#ifdef CONFIG_AXP_TWI_USED
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static struct i2c_driver axp22_driver = {
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#else
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static struct platform_driver axp22_driver = {
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#endif
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.driver = {
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.name = "axp22",
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.owner = THIS_MODULE,
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.of_match_table = axp22_dt_ids,
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},
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.probe = axp22_probe,
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.remove = axp22_remove,
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#ifdef CONFIG_AXP_TWI_USED
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.id_table = axp22_id_table,
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#endif
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|
};
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|
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static int __init axp22_init(void)
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|
{
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|
int ret;
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|
|
|
#ifdef CONFIG_AXP_TWI_USED
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ret = i2c_add_driver(&axp22_driver);
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|
#else
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ret = platform_driver_register(&axp22_driver);
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|
#endif
|
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if (ret != 0)
|
|
pr_err("Failed to register axp22x driver: %d\n", ret);
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|
|
|
return ret;
|
|
}
|
|
subsys_initcall_sync(axp22_init);
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|
|
|
static void __exit axp22_exit(void)
|
|
{
|
|
#ifdef CONFIG_AXP_TWI_USED
|
|
i2c_del_driver(&axp22_driver);
|
|
#else
|
|
platform_driver_unregister(&axp22_driver);
|
|
#endif
|
|
}
|
|
module_exit(axp22_exit);
|
|
|
|
MODULE_DESCRIPTION("PMIC Driver for AXP22X");
|
|
MODULE_AUTHOR("Qin <qinyongshen@allwinnertech.com>");
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MODULE_LICENSE("GPL");
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