diff options
Diffstat (limited to 'drivers/usb/otg/ab8500-usb.c')
-rw-r--r-- | drivers/usb/otg/ab8500-usb.c | 822 |
1 files changed, 614 insertions, 208 deletions
diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c index 74fe6e62e0f..5987c9bbc94 100644 --- a/drivers/usb/otg/ab8500-usb.c +++ b/drivers/usb/otg/ab8500-usb.c @@ -29,24 +29,58 @@ #include <linux/notifier.h> #include <linux/interrupt.h> #include <linux/delay.h> +#include <linux/clk.h> +#include <linux/err.h> #include <linux/mfd/abx500.h> #include <linux/mfd/abx500/ab8500.h> +#include <linux/regulator/consumer.h> +#include <linux/mfd/dbx500-prcmu.h> +#include <linux/kernel_stat.h> +#include <linux/pm_qos.h> + +#include <asm/io.h> + +#include <mach/usb.h> #define AB8500_MAIN_WD_CTRL_REG 0x01 #define AB8500_USB_LINE_STAT_REG 0x80 #define AB8500_USB_PHY_CTRL_REG 0x8A +#define AB8500_VBUS_CTRL_REG 0x82 +#define AB8500_IT_SOURCE2_REG 0x01 +#define AB8500_IT_SOURCE20_REG 0x13 +#define AB8500_SRC_INT_USB_HOST 0x04 +#define AB8500_SRC_INT_USB_DEVICE 0x80 #define AB8500_BIT_OTG_STAT_ID (1 << 0) #define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0) #define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1) #define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) #define AB8500_BIT_WD_CTRL_KICK (1 << 1) +#define AB8500_BIT_VBUS_ENABLE (1 << 0) #define AB8500_V1x_LINK_STAT_WAIT (HZ/10) #define AB8500_WD_KICK_DELAY_US 100 /* usec */ #define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ +#define AB8500_V20_31952_DISABLE_DELAY_US 100 /* usec */ #define AB8500_WD_V10_DISABLE_DELAY_MS 100 /* ms */ +/* Registers in bank 0x11 */ +#define AB8500_BANK12_ACCESS 0x00 + +/* Registers in bank 0x12 */ +#define AB8500_USB_PHY_TUNE1 0x05 +#define AB8500_USB_PHY_TUNE2 0x06 +#define AB8500_USB_PHY_TUNE3 0x07 + +static struct pm_qos_request usb_pm_qos_latency; +static bool usb_pm_qos_is_latency_0; + +#define USB_PROBE_DELAY 1000 /* 1 seconds */ +#define USB_LIMIT (200) /* If we have more than 200 irqs per second */ + +#define PUBLIC_ID_BACKUPRAM1 (U8500_BACKUPRAM1_BASE + 0x0FC0) +#define MAX_USB_SERIAL_NUMBER_LEN 31 + /* Usb line status register */ enum ab8500_usb_link_status { USB_LINK_NOT_CONFIGURED = 0, @@ -67,6 +101,13 @@ enum ab8500_usb_link_status { USB_LINK_NOT_VALID_LINK }; +enum ab8500_usb_mode { + USB_IDLE = 0, + USB_PERIPHERAL, + USB_HOST, + USB_DEDICATED_CHG +}; + struct ab8500_usb { struct otg_transceiver otg; struct device *dev; @@ -80,6 +121,14 @@ struct ab8500_usb { struct work_struct phy_dis_work; unsigned long link_status_wait; int rev; + enum ab8500_usb_mode mode; + struct clk *sysclk; + struct regulator *v_ape; + struct regulator *v_musb; + struct regulator *v_ulpi; + struct abx500_usbgpio_platform_data *usb_gpio; + struct delayed_work work_usb_workaround; + bool sysfs_flag; }; static inline struct ab8500_usb *xceiv_to_ab(struct otg_transceiver *x) @@ -102,10 +151,8 @@ static void ab8500_usb_wd_workaround(struct ab8500_usb *ab) (AB8500_BIT_WD_CTRL_ENABLE | AB8500_BIT_WD_CTRL_KICK)); - if (ab->rev > 0x10) /* v1.1 v2.0 */ + if (ab->rev > 0x10) /* v2.0 v3.0 */ udelay(AB8500_WD_V11_DISABLE_DELAY_US); - else /* v1.0 */ - msleep(AB8500_WD_V10_DISABLE_DELAY_MS); abx500_set_register_interruptible(ab->dev, AB8500_SYS_CTRL2_BLOCK, @@ -113,46 +160,167 @@ static void ab8500_usb_wd_workaround(struct ab8500_usb *ab) 0); } -static void ab8500_usb_phy_ctrl(struct ab8500_usb *ab, bool sel_host, +static void ab8500_usb_load(struct work_struct *work) +{ + int cpu; + unsigned int num_irqs = 0; + static unsigned int old_num_irqs = UINT_MAX; + struct delayed_work *work_usb_workaround = to_delayed_work(work); + struct ab8500_usb *ab = container_of(work_usb_workaround, + struct ab8500_usb, work_usb_workaround); + + for_each_online_cpu(cpu) + num_irqs += kstat_irqs_cpu(IRQ_DB8500_USBOTG, cpu); + + if ((num_irqs > old_num_irqs) && + (num_irqs - old_num_irqs) > USB_LIMIT) { + + prcmu_qos_update_requirement(PRCMU_QOS_ARM_OPP, + "usb", 125); + if (!usb_pm_qos_is_latency_0) { + + pm_qos_add_request(&usb_pm_qos_latency, + PM_QOS_CPU_DMA_LATENCY, 0); + usb_pm_qos_is_latency_0 = true; + } + } else { + + if (usb_pm_qos_is_latency_0) { + + pm_qos_remove_request(&usb_pm_qos_latency); + usb_pm_qos_is_latency_0 = false; + } + + prcmu_qos_update_requirement(PRCMU_QOS_ARM_OPP, + "usb", 25); + } + old_num_irqs = num_irqs; + + schedule_delayed_work_on(0, + &ab->work_usb_workaround, + msecs_to_jiffies(USB_PROBE_DELAY)); +} + +static void ab8500_usb_regulator_ctrl(struct ab8500_usb *ab, bool sel_host, bool enable) { - u8 ctrl_reg; - abx500_get_register_interruptible(ab->dev, + int ret = 0, volt = 0; + + if (enable) { + regulator_enable(ab->v_ape); + if (ab->rev >= 0x30) { + ret = regulator_set_voltage(ab->v_ulpi, + 1300000, 1350000); + if (ret < 0) + dev_err(ab->dev, "Failed to set the Vintcore" + " to 1.3V, ret=%d\n", ret); + ret = regulator_set_optimum_mode(ab->v_ulpi, + 28000); + if (ret < 0) + dev_err(ab->dev, "Failed to set optimum mode" + " (ret=%d)\n", ret); + + } + regulator_enable(ab->v_ulpi); + if (ab->rev >= 0x30) { + volt = regulator_get_voltage(ab->v_ulpi); + if ((volt != 1300000) && (volt != 1350000)) + dev_err(ab->dev, "Vintcore is not" + " set to 1.3V" + " volt=%d\n", volt); + } + regulator_enable(ab->v_musb); + + } else { + regulator_disable(ab->v_musb); + regulator_disable(ab->v_ulpi); + regulator_disable(ab->v_ape); + } +} + + +static void ab8500_usb_phy_enable(struct ab8500_usb *ab, bool sel_host) +{ + u8 bit; + bit = sel_host ? AB8500_BIT_PHY_CTRL_HOST_EN : + AB8500_BIT_PHY_CTRL_DEVICE_EN; + + ab->usb_gpio->enable(); + clk_enable(ab->sysclk); + + ab8500_usb_regulator_ctrl(ab, sel_host, true); + + prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP, + (char *)dev_name(ab->dev), 100); + + schedule_delayed_work_on(0, + &ab->work_usb_workaround, + msecs_to_jiffies(USB_PROBE_DELAY)); + + abx500_mask_and_set_register_interruptible(ab->dev, AB8500_USB, AB8500_USB_PHY_CTRL_REG, - &ctrl_reg); - if (sel_host) { - if (enable) - ctrl_reg |= AB8500_BIT_PHY_CTRL_HOST_EN; - else - ctrl_reg &= ~AB8500_BIT_PHY_CTRL_HOST_EN; - } else { - if (enable) - ctrl_reg |= AB8500_BIT_PHY_CTRL_DEVICE_EN; - else - ctrl_reg &= ~AB8500_BIT_PHY_CTRL_DEVICE_EN; + bit, + bit); + +} + +static void ab8500_usb_wd_linkstatus(struct ab8500_usb *ab,u8 bit) +{ + /* Wrokaround for v2.0 bug # 31952 */ + if (ab->rev == 0x20) { + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + bit, + bit); + udelay(AB8500_V20_31952_DISABLE_DELAY_US); } +} - abx500_set_register_interruptible(ab->dev, +static void ab8500_usb_phy_disable(struct ab8500_usb *ab, bool sel_host) +{ + u8 bit; + bit = sel_host ? AB8500_BIT_PHY_CTRL_HOST_EN : + AB8500_BIT_PHY_CTRL_DEVICE_EN; + + ab8500_usb_wd_linkstatus(ab,bit); + + abx500_mask_and_set_register_interruptible(ab->dev, AB8500_USB, AB8500_USB_PHY_CTRL_REG, - ctrl_reg); + bit, + 0); + + /* Needed to disable the phy.*/ + ab8500_usb_wd_workaround(ab); + + clk_disable(ab->sysclk); + + ab8500_usb_regulator_ctrl(ab, sel_host, false); - /* Needed to enable the phy.*/ - if (enable) - ab8500_usb_wd_workaround(ab); + ab->usb_gpio->disable(); + + prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP, + (char *)dev_name(ab->dev), 50); + + if (!sel_host) { + + cancel_delayed_work_sync(&ab->work_usb_workaround); + prcmu_qos_update_requirement(PRCMU_QOS_ARM_OPP, + "usb", 25); + } } -#define ab8500_usb_host_phy_en(ab) ab8500_usb_phy_ctrl(ab, true, true) -#define ab8500_usb_host_phy_dis(ab) ab8500_usb_phy_ctrl(ab, true, false) -#define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_ctrl(ab, false, true) -#define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_ctrl(ab, false, false) +#define ab8500_usb_host_phy_en(ab) ab8500_usb_phy_enable(ab, true) +#define ab8500_usb_host_phy_dis(ab) ab8500_usb_phy_disable(ab, true) +#define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_enable(ab, false) +#define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_disable(ab, false) static int ab8500_usb_link_status_update(struct ab8500_usb *ab) { u8 reg; enum ab8500_usb_link_status lsts; - void *v = NULL; enum usb_xceiv_events event; abx500_get_register_interruptible(ab->dev, @@ -162,93 +330,118 @@ static int ab8500_usb_link_status_update(struct ab8500_usb *ab) lsts = (reg >> 3) & 0x0F; - switch (lsts) { - case USB_LINK_NOT_CONFIGURED: - case USB_LINK_RESERVED: - case USB_LINK_NOT_VALID_LINK: - /* TODO: Disable regulators. */ - ab8500_usb_host_phy_dis(ab); - ab8500_usb_peri_phy_dis(ab); - ab->otg.state = OTG_STATE_B_IDLE; - ab->otg.default_a = false; - ab->vbus_draw = 0; - event = USB_EVENT_NONE; - break; - - case USB_LINK_STD_HOST_NC: - case USB_LINK_STD_HOST_C_NS: - case USB_LINK_STD_HOST_C_S: - case USB_LINK_HOST_CHG_NM: - case USB_LINK_HOST_CHG_HS: - case USB_LINK_HOST_CHG_HS_CHIRP: - if (ab->otg.gadget) { - /* TODO: Enable regulators. */ - ab8500_usb_peri_phy_en(ab); - v = ab->otg.gadget; + if (!(ab->sysfs_flag)) { + switch (lsts) { + case USB_LINK_ACA_RID_B: + event = USB_EVENT_RIDB; + case USB_LINK_NOT_CONFIGURED: + case USB_LINK_RESERVED: + case USB_LINK_NOT_VALID_LINK: + if (ab->mode == USB_HOST) + ab8500_usb_host_phy_dis(ab); + else if (ab->mode == USB_PERIPHERAL) + ab8500_usb_peri_phy_dis(ab); + ab->mode = USB_IDLE; + ab->otg.default_a = false; + ab->vbus_draw = 0; + if (event != USB_EVENT_RIDB) + event = USB_EVENT_NONE; + break; + case USB_LINK_ACA_RID_C_NM: + case USB_LINK_ACA_RID_C_HS: + case USB_LINK_ACA_RID_C_HS_CHIRP: + event = USB_EVENT_RIDC; + case USB_LINK_STD_HOST_NC: + case USB_LINK_STD_HOST_C_NS: + case USB_LINK_STD_HOST_C_S: + case USB_LINK_HOST_CHG_NM: + case USB_LINK_HOST_CHG_HS: + case USB_LINK_HOST_CHG_HS_CHIRP: + if (ab->mode == USB_HOST) { + ab->mode = USB_PERIPHERAL; + ab8500_usb_host_phy_dis(ab); + ux500_restore_context(); + ab8500_usb_peri_phy_en(ab); + } + if (ab->mode == USB_IDLE) { + ab->mode = USB_PERIPHERAL; + ux500_restore_context(); + ab8500_usb_peri_phy_en(ab); + } + if (event != USB_EVENT_RIDC) + event = USB_EVENT_VBUS; + break; + + case USB_LINK_ACA_RID_A: + event = USB_EVENT_RIDA; + case USB_LINK_HM_IDGND: + if (ab->mode == USB_PERIPHERAL) { + ab->mode = USB_HOST; + ab8500_usb_peri_phy_dis(ab); + ux500_restore_context(); + ab8500_usb_host_phy_en(ab); + } + if (ab->mode == USB_IDLE) { + ab->mode = USB_HOST; + ux500_restore_context(); + ab8500_usb_host_phy_en(ab); + } + ab->otg.default_a = true; + if (event != USB_EVENT_RIDA) + event = USB_EVENT_ID; + break; + + case USB_LINK_DEDICATED_CHG: + /* TODO: vbus_draw */ + ab->mode = USB_DEDICATED_CHG; + event = USB_EVENT_CHARGER; + break; } - event = USB_EVENT_VBUS; - break; - - case USB_LINK_HM_IDGND: - if (ab->otg.host) { - /* TODO: Enable regulators. */ - ab8500_usb_host_phy_en(ab); - v = ab->otg.host; - } - ab->otg.state = OTG_STATE_A_IDLE; - ab->otg.default_a = true; - event = USB_EVENT_ID; - break; - - case USB_LINK_ACA_RID_A: - case USB_LINK_ACA_RID_B: - /* TODO */ - case USB_LINK_ACA_RID_C_NM: - case USB_LINK_ACA_RID_C_HS: - case USB_LINK_ACA_RID_C_HS_CHIRP: - case USB_LINK_DEDICATED_CHG: - /* TODO: vbus_draw */ - event = USB_EVENT_CHARGER; - break; + atomic_notifier_call_chain(&ab->otg.notifier, event, + &ab->vbus_draw); } - atomic_notifier_call_chain(&ab->otg.notifier, event, v); - return 0; } static void ab8500_usb_delayed_work(struct work_struct *work) { - struct ab8500_usb *ab = container_of(work, struct ab8500_usb, - dwork.work); + struct delayed_work *dwork = to_delayed_work(work); + struct ab8500_usb *ab = container_of(dwork, struct ab8500_usb, dwork); ab8500_usb_link_status_update(ab); } -static irqreturn_t ab8500_usb_v1x_common_irq(int irq, void *data) -{ - struct ab8500_usb *ab = (struct ab8500_usb *) data; - - /* Wait for link status to become stable. */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); - - return IRQ_HANDLED; -} - -static irqreturn_t ab8500_usb_v1x_vbus_fall_irq(int irq, void *data) +static irqreturn_t ab8500_usb_disconnect_irq(int irq, void *data) { struct ab8500_usb *ab = (struct ab8500_usb *) data; + enum usb_xceiv_events event; /* Link status will not be updated till phy is disabled. */ - ab8500_usb_peri_phy_dis(ab); - - /* Wait for link status to become stable. */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); + if (ab->mode == USB_HOST) { + event = USB_EVENT_NONE; + ab->otg.default_a = false; + ab->vbus_draw = 0; + atomic_notifier_call_chain(&ab->otg.notifier, + event, &ab->vbus_draw); + ab8500_usb_host_phy_dis(ab); + } + else if (ab->mode == USB_PERIPHERAL) + ab8500_usb_peri_phy_dis(ab); + else if (ab->mode == USB_DEDICATED_CHG && ab->rev == 0x20) { + ab8500_usb_wd_linkstatus(ab,AB8500_BIT_PHY_CTRL_DEVICE_EN); + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_DEVICE_EN, + 0); + } + ab->mode = USB_IDLE; return IRQ_HANDLED; } -static irqreturn_t ab8500_usb_v20_irq(int irq, void *data) +static irqreturn_t ab8500_usb_v20_link_status_irq(int irq, void *data) { struct ab8500_usb *ab = (struct ab8500_usb *) data; @@ -267,6 +460,19 @@ static void ab8500_usb_phy_disable_work(struct work_struct *work) if (!ab->otg.gadget) ab8500_usb_peri_phy_dis(ab); + +} + +static unsigned ab8500_eyediagram_workaroud(struct ab8500_usb *ab, unsigned mA) +{ + /* AB V2 has eye diagram issues when drawing more + * than 100mA from VBUS.So setting charging current + * to 100mA in case of standard host + */ + if ((ab->rev < 0x30) && (mA > 100)) + mA = 100; + + return mA; } static int ab8500_usb_set_power(struct otg_transceiver *otg, unsigned mA) @@ -278,18 +484,15 @@ static int ab8500_usb_set_power(struct otg_transceiver *otg, unsigned mA) ab = xceiv_to_ab(otg); + mA = ab8500_eyediagram_workaroud(ab, mA); + ab->vbus_draw = mA; - if (mA) - atomic_notifier_call_chain(&ab->otg.notifier, - USB_EVENT_ENUMERATED, ab->otg.gadget); + atomic_notifier_call_chain(&ab->otg.notifier, + USB_EVENT_VBUS, &ab->vbus_draw); return 0; } -/* TODO: Implement some way for charging or other drivers to read - * ab->vbus_draw. - */ - static int ab8500_usb_set_suspend(struct otg_transceiver *x, int suspend) { /* TODO */ @@ -306,25 +509,13 @@ static int ab8500_usb_set_peripheral(struct otg_transceiver *otg, ab = xceiv_to_ab(otg); + ab->otg.gadget = gadget; /* Some drivers call this function in atomic context. * Do not update ab8500 registers directly till this * is fixed. */ - - if (!gadget) { - /* TODO: Disable regulators. */ - ab->otg.gadget = NULL; + if (!gadget) schedule_work(&ab->phy_dis_work); - } else { - ab->otg.gadget = gadget; - ab->otg.state = OTG_STATE_B_IDLE; - - /* Phy will not be enabled if cable is already - * plugged-in. Schedule to enable phy. - * Use same delay to avoid any race condition. - */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); - } return 0; } @@ -339,148 +530,278 @@ static int ab8500_usb_set_host(struct otg_transceiver *otg, ab = xceiv_to_ab(otg); + ab->otg.host = host; + /* Some drivers call this function in atomic context. * Do not update ab8500 registers directly till this * is fixed. */ - - if (!host) { - /* TODO: Disable regulators. */ - ab->otg.host = NULL; + if (!host) schedule_work(&ab->phy_dis_work); - } else { - ab->otg.host = host; - /* Phy will not be enabled if cable is already - * plugged-in. Schedule to enable phy. - * Use same delay to avoid any race condition. - */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); + + return 0; +} +/** + * ab8500_usb_boot_detect : detect the USB cable during boot time. + * @device: value for device. + * + * This function is used to detect the USB cable during boot time. + */ +static int ab8500_usb_boot_detect(struct ab8500_usb *ab) +{ + /* Disabling PHY before selective enable or disable */ + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_DEVICE_EN, + AB8500_BIT_PHY_CTRL_DEVICE_EN); + + udelay(100); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_DEVICE_EN, + 0); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_HOST_EN, + AB8500_BIT_PHY_CTRL_HOST_EN); + + udelay(100); + + abx500_mask_and_set_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + AB8500_BIT_PHY_CTRL_HOST_EN, + 0); + + return 0; +} + +static void ab8500_usb_regulator_put(struct ab8500_usb *ab) +{ + + if (ab->v_ape) + regulator_put(ab->v_ape); + + if (ab->v_ulpi) + regulator_put(ab->v_ulpi); + + if (ab->v_musb) + regulator_put(ab->v_musb); +} + +static int ab8500_usb_regulator_get(struct ab8500_usb *ab) +{ + int err; + + ab->v_ape = regulator_get(ab->dev, "v-ape"); + if (IS_ERR(ab->v_ape)) { + dev_err(ab->dev, "Could not get v-ape supply\n"); + err = PTR_ERR(ab->v_ape); + goto reg_error; + } + + ab->v_ulpi = regulator_get(ab->dev, "vddulpivio18"); + if (IS_ERR(ab->v_ulpi)) { + dev_err(ab->dev, "Could not get vddulpivio18 supply\n"); + err = PTR_ERR(ab->v_ulpi); + goto reg_error; + } + + ab->v_musb = regulator_get(ab->dev, "musb_1v8"); + if (IS_ERR(ab->v_musb)) { + dev_err(ab->dev, "Could not get musb_1v8 supply\n"); + err = PTR_ERR(ab->v_musb); + goto reg_error; } return 0; + +reg_error: + ab8500_usb_regulator_put(ab); + return err; } static void ab8500_usb_irq_free(struct ab8500_usb *ab) { - if (ab->rev < 0x20) { + if (ab->irq_num_id_rise) free_irq(ab->irq_num_id_rise, ab); + + if (ab->irq_num_id_fall) free_irq(ab->irq_num_id_fall, ab); + + if (ab->irq_num_vbus_rise) free_irq(ab->irq_num_vbus_rise, ab); + + if (ab->irq_num_vbus_fall) free_irq(ab->irq_num_vbus_fall, ab); - } else { + + if (ab->irq_num_link_status) free_irq(ab->irq_num_link_status, ab); - } } -static int ab8500_usb_v1x_res_setup(struct platform_device *pdev, +static int ab8500_usb_irq_setup(struct platform_device *pdev, struct ab8500_usb *ab) { int err; + int irq; + + if (ab->rev > 0x10) { /* 0x20 0x30 */ + irq = platform_get_irq_byname(pdev, "USB_LINK_STATUS"); + if (irq < 0) { + err = irq; + dev_err(&pdev->dev, "Link status irq not found\n"); + goto irq_fail; + } - ab->irq_num_id_rise = platform_get_irq_byname(pdev, "ID_WAKEUP_R"); - if (ab->irq_num_id_rise < 0) { - dev_err(&pdev->dev, "ID rise irq not found\n"); - return ab->irq_num_id_rise; - } - err = request_threaded_irq(ab->irq_num_id_rise, NULL, - ab8500_usb_v1x_common_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-id-rise", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for ID rise irq\n"); - goto fail0; + err = request_threaded_irq(irq, NULL, + ab8500_usb_v20_link_status_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-link-status", ab); + if (err < 0) { + dev_err(ab->dev, + "request_irq failed for link status irq\n"); + return err; + } + ab->irq_num_link_status = irq; } - ab->irq_num_id_fall = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); - if (ab->irq_num_id_fall < 0) { + irq = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); + if (irq < 0) { + err = irq; dev_err(&pdev->dev, "ID fall irq not found\n"); return ab->irq_num_id_fall; } - err = request_threaded_irq(ab->irq_num_id_fall, NULL, - ab8500_usb_v1x_common_irq, + err = request_threaded_irq(irq, NULL, + ab8500_usb_disconnect_irq, IRQF_NO_SUSPEND | IRQF_SHARED, "usb-id-fall", ab); if (err < 0) { dev_err(ab->dev, "request_irq failed for ID fall irq\n"); - goto fail1; - } - - ab->irq_num_vbus_rise = platform_get_irq_byname(pdev, "VBUS_DET_R"); - if (ab->irq_num_vbus_rise < 0) { - dev_err(&pdev->dev, "VBUS rise irq not found\n"); - return ab->irq_num_vbus_rise; - } - err = request_threaded_irq(ab->irq_num_vbus_rise, NULL, - ab8500_usb_v1x_common_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-vbus-rise", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for Vbus rise irq\n"); - goto fail2; + goto irq_fail; } + ab->irq_num_id_fall = irq; - ab->irq_num_vbus_fall = platform_get_irq_byname(pdev, "VBUS_DET_F"); - if (ab->irq_num_vbus_fall < 0) { + irq = platform_get_irq_byname(pdev, "VBUS_DET_F"); + if (irq < 0) { + err = irq; dev_err(&pdev->dev, "VBUS fall irq not found\n"); - return ab->irq_num_vbus_fall; + goto irq_fail; } - err = request_threaded_irq(ab->irq_num_vbus_fall, NULL, - ab8500_usb_v1x_vbus_fall_irq, + err = request_threaded_irq(irq, NULL, + ab8500_usb_disconnect_irq, IRQF_NO_SUSPEND | IRQF_SHARED, "usb-vbus-fall", ab); if (err < 0) { dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); - goto fail3; + goto irq_fail; } + ab->irq_num_vbus_fall = irq; return 0; -fail3: - free_irq(ab->irq_num_vbus_rise, ab); -fail2: - free_irq(ab->irq_num_id_fall, ab); -fail1: - free_irq(ab->irq_num_id_rise, ab); -fail0: + +irq_fail: + ab8500_usb_irq_free(ab); return err; } -static int ab8500_usb_v2_res_setup(struct platform_device *pdev, - struct ab8500_usb *ab) +/* Sys interfaces */ +static ssize_t +serial_number_show(struct device *dev, + struct device_attribute *attr, char *buf) { - int err; + u32 bufer[5]; + void __iomem *backup_ram = NULL; - ab->irq_num_link_status = platform_get_irq_byname(pdev, - "USB_LINK_STATUS"); - if (ab->irq_num_link_status < 0) { - dev_err(&pdev->dev, "Link status irq not found\n"); - return ab->irq_num_link_status; - } + backup_ram = ioremap(PUBLIC_ID_BACKUPRAM1, 0x14); - err = request_threaded_irq(ab->irq_num_link_status, NULL, - ab8500_usb_v20_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-link-status", ab); - if (err < 0) { - dev_err(ab->dev, - "request_irq failed for link status irq\n"); - return err; - } + if (backup_ram) { + bufer[0] = readl(backup_ram); + bufer[1] = readl(backup_ram + 4); + bufer[2] = readl(backup_ram + 8); + bufer[3] = readl(backup_ram + 0x0c); + bufer[4] = readl(backup_ram + 0x10); - return 0; + snprintf(buf, MAX_USB_SERIAL_NUMBER_LEN+1, + "%.8X%.8X%.8X%.8X%.8X", + bufer[0], bufer[1], bufer[2], bufer[3], bufer[4]); + + iounmap(backup_ram); + } else + dev_err(dev, "$$\n"); + + return strlen(buf); +} + +static DEVICE_ATTR(serial_number, 0644, serial_number_show, NULL); + +static ssize_t +boot_time_device_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ab8500_usb *ab = dev_get_drvdata(dev); + u8 val = ab->sysfs_flag; + + snprintf(buf, 2, "%d", val); + + return strlen(buf); +} + +static ssize_t +boot_time_device_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t n) +{ + struct ab8500_usb *ab = dev_get_drvdata(dev); + + ab->sysfs_flag = false; + + ab8500_usb_link_status_update(ab); + + return n; +} +static DEVICE_ATTR(boot_time_device, 0644, + boot_time_device_show, boot_time_device_store); + + +static struct attribute *ab8500_usb_attributes[] = { + &dev_attr_serial_number.attr, + &dev_attr_boot_time_device.attr, + NULL +}; +static const struct attribute_group ab8500_attr_group = { + .attrs = ab8500_usb_attributes, +}; + +static int ab8500_create_sysfsentries(struct ab8500_usb *ab) +{ + int err; + + err = sysfs_create_group(&ab->dev->kobj, &ab8500_attr_group); + if (err) + sysfs_remove_group(&ab->dev->kobj, &ab8500_attr_group); + + return err; } static int __devinit ab8500_usb_probe(struct platform_device *pdev) { struct ab8500_usb *ab; + struct ab8500_platform_data *ab8500_pdata = + dev_get_platdata(pdev->dev.parent); int err; int rev; + int ret = -1; rev = abx500_get_chip_id(&pdev->dev); if (rev < 0) { dev_err(&pdev->dev, "Chip id read failed\n"); return rev; - } else if (rev < 0x10) { - dev_err(&pdev->dev, "Unsupported AB8500 chip\n"); + } else if (rev < 0x20) { + dev_err(&pdev->dev, "Unsupported AB8500 chip rev=%d\n", rev); return -ENODEV; } @@ -492,14 +813,16 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev) ab->rev = rev; ab->otg.dev = ab->dev; ab->otg.label = "ab8500"; - ab->otg.state = OTG_STATE_UNDEFINED; + ab->otg.state = OTG_STATE_B_IDLE; ab->otg.set_host = ab8500_usb_set_host; ab->otg.set_peripheral = ab8500_usb_set_peripheral; ab->otg.set_suspend = ab8500_usb_set_suspend; ab->otg.set_power = ab8500_usb_set_power; + ab->usb_gpio = ab8500_pdata->usb; + ab->sysfs_flag = true; platform_set_drvdata(pdev, ab); - + dev_set_drvdata(ab->dev, ab); ATOMIC_INIT_NOTIFIER_HEAD(&ab->otg.notifier); /* v1: Wait for link status to become stable. @@ -510,27 +833,102 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev) /* all: Disable phy when called from set_host and set_peripheral */ INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); - if (ab->rev < 0x20) { - err = ab8500_usb_v1x_res_setup(pdev, ab); - ab->link_status_wait = AB8500_V1x_LINK_STAT_WAIT; - } else { - err = ab8500_usb_v2_res_setup(pdev, ab); + INIT_DELAYED_WORK_DEFERRABLE(&ab->work_usb_workaround, + ab8500_usb_load); + err = ab8500_usb_regulator_get(ab); + if (err) + goto fail0; + + ab->sysclk = clk_get(ab->dev, "sysclk"); + if (IS_ERR(ab->sysclk)) { + err = PTR_ERR(ab->sysclk); + goto fail1; } + err = ab8500_usb_irq_setup(pdev, ab); if (err < 0) - goto fail0; + goto fail2; err = otg_set_transceiver(&ab->otg); if (err) { dev_err(&pdev->dev, "Can't register transceiver\n"); - goto fail1; + goto fail3; } - dev_info(&pdev->dev, "AB8500 usb driver initialized\n"); + /* Write Phy tuning values */ + if (ab->rev >= 0x30) { + /* Enable the PBT/Bank 0x12 access */ + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, + AB8500_BANK12_ACCESS, + 0x01); + if (ret < 0) + printk(KERN_ERR "Failed to enable bank12" + " access ret=%d\n", ret); + + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, + AB8500_USB_PHY_TUNE1, + 0xC8); + if (ret < 0) + printk(KERN_ERR "Failed to set PHY_TUNE1" + " register ret=%d\n", ret); + + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, + AB8500_USB_PHY_TUNE2, + 0x00); + if (ret < 0) + printk(KERN_ERR "Failed to set PHY_TUNE2" + " register ret=%d\n", ret); + + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, + AB8500_USB_PHY_TUNE3, + 0x78); + + if (ret < 0) + printk(KERN_ERR "Failed to set PHY_TUNE3" + " regester ret=%d\n", ret); + + /* Switch to normal mode/disable Bank 0x12 access */ + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, + AB8500_BANK12_ACCESS, + 0x00); + + if (ret < 0) + printk(KERN_ERR "Failed to switch bank12" + " access ret=%d\n", ret); + } + /* Needed to enable ID detection. */ + ab8500_usb_wd_workaround(ab); + + err = ab->usb_gpio->get(ab->dev); + if (err < 0) + goto fail3; + + prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, + (char *)dev_name(ab->dev), 50); + dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", ab->rev); + + prcmu_qos_add_requirement(PRCMU_QOS_ARM_OPP, "usb", 25); + + err = ab8500_usb_boot_detect(ab); + if (err < 0) + goto fail3; + + err = ab8500_create_sysfsentries(ab); + if (err) + goto fail3; return 0; -fail1: +fail3: ab8500_usb_irq_free(ab); +fail2: + clk_put(ab->sysclk); +fail1: + ab8500_usb_regulator_put(ab); fail0: kfree(ab); return err; @@ -548,8 +946,16 @@ static int __devexit ab8500_usb_remove(struct platform_device *pdev) otg_set_transceiver(NULL); - ab8500_usb_host_phy_dis(ab); - ab8500_usb_peri_phy_dis(ab); + if (ab->mode == USB_HOST) + ab8500_usb_host_phy_dis(ab); + else if (ab->mode == USB_PERIPHERAL) + ab8500_usb_peri_phy_dis(ab); + + clk_put(ab->sysclk); + + ab8500_usb_regulator_put(ab); + + ab->usb_gpio->put(); platform_set_drvdata(pdev, NULL); |