diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/misc/tifm_7xx1.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/misc/tifm_7xx1.c | 454 |
1 files changed, 0 insertions, 454 deletions
diff --git a/ANDROID_3.4.5/drivers/misc/tifm_7xx1.c b/ANDROID_3.4.5/drivers/misc/tifm_7xx1.c deleted file mode 100644 index ba247902..00000000 --- a/ANDROID_3.4.5/drivers/misc/tifm_7xx1.c +++ /dev/null @@ -1,454 +0,0 @@ -/* - * tifm_7xx1.c - TI FlashMedia driver - * - * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#include <linux/tifm.h> -#include <linux/dma-mapping.h> -#include <linux/module.h> - -#define DRIVER_NAME "tifm_7xx1" -#define DRIVER_VERSION "0.8" - -#define TIFM_IRQ_ENABLE 0x80000000 -#define TIFM_IRQ_SOCKMASK(x) (x) -#define TIFM_IRQ_CARDMASK(x) ((x) << 8) -#define TIFM_IRQ_FIFOMASK(x) ((x) << 16) -#define TIFM_IRQ_SETALL 0xffffffff - -static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm, - struct tifm_dev *sock) -{ -} - -static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock) -{ - unsigned long flags; - - spin_lock_irqsave(&fm->lock, flags); - fm->socket_change_set |= 1 << sock->socket_id; - tifm_queue_work(&fm->media_switcher); - spin_unlock_irqrestore(&fm->lock, flags); -} - -static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id) -{ - struct tifm_adapter *fm = dev_id; - struct tifm_dev *sock; - unsigned int irq_status, cnt; - - spin_lock(&fm->lock); - irq_status = readl(fm->addr + FM_INTERRUPT_STATUS); - if (irq_status == 0 || irq_status == (~0)) { - spin_unlock(&fm->lock); - return IRQ_NONE; - } - - if (irq_status & TIFM_IRQ_ENABLE) { - writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); - - for (cnt = 0; cnt < fm->num_sockets; cnt++) { - sock = fm->sockets[cnt]; - if (sock) { - if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1)) - sock->data_event(sock); - if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1)) - sock->card_event(sock); - } - } - - fm->socket_change_set |= irq_status - & ((1 << fm->num_sockets) - 1); - } - writel(irq_status, fm->addr + FM_INTERRUPT_STATUS); - - if (fm->finish_me) - complete_all(fm->finish_me); - else if (!fm->socket_change_set) - writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); - else - tifm_queue_work(&fm->media_switcher); - - spin_unlock(&fm->lock); - return IRQ_HANDLED; -} - -static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr) -{ - unsigned int s_state; - int cnt; - - writel(0x0e00, sock_addr + SOCK_CONTROL); - - for (cnt = 16; cnt <= 256; cnt <<= 1) { - if (!(TIFM_SOCK_STATE_POWERED - & readl(sock_addr + SOCK_PRESENT_STATE))) - break; - - msleep(cnt); - } - - s_state = readl(sock_addr + SOCK_PRESENT_STATE); - if (!(TIFM_SOCK_STATE_OCCUPIED & s_state)) - return 0; - - writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED, - sock_addr + SOCK_CONTROL); - - /* xd needs some extra time before power on */ - if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) - == TIFM_TYPE_XD) - msleep(40); - - writel((s_state & TIFM_CTRL_POWER_MASK) | 0x0c00, - sock_addr + SOCK_CONTROL); - /* wait for power to stabilize */ - msleep(20); - for (cnt = 16; cnt <= 256; cnt <<= 1) { - if ((TIFM_SOCK_STATE_POWERED - & readl(sock_addr + SOCK_PRESENT_STATE))) - break; - - msleep(cnt); - } - - writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED), - sock_addr + SOCK_CONTROL); - - return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7; -} - -inline static void tifm_7xx1_sock_power_off(char __iomem *sock_addr) -{ - writel((~TIFM_CTRL_POWER_MASK) & readl(sock_addr + SOCK_CONTROL), - sock_addr + SOCK_CONTROL); -} - -inline static char __iomem * -tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num) -{ - return base_addr + ((sock_num + 1) << 10); -} - -static void tifm_7xx1_switch_media(struct work_struct *work) -{ - struct tifm_adapter *fm = container_of(work, struct tifm_adapter, - media_switcher); - struct tifm_dev *sock; - char __iomem *sock_addr; - unsigned long flags; - unsigned char media_id; - unsigned int socket_change_set, cnt; - - spin_lock_irqsave(&fm->lock, flags); - socket_change_set = fm->socket_change_set; - fm->socket_change_set = 0; - - dev_dbg(fm->dev.parent, "checking media set %x\n", - socket_change_set); - - if (!socket_change_set) { - spin_unlock_irqrestore(&fm->lock, flags); - return; - } - - for (cnt = 0; cnt < fm->num_sockets; cnt++) { - if (!(socket_change_set & (1 << cnt))) - continue; - sock = fm->sockets[cnt]; - if (sock) { - printk(KERN_INFO - "%s : demand removing card from socket %u:%u\n", - dev_name(&fm->dev), fm->id, cnt); - fm->sockets[cnt] = NULL; - sock_addr = sock->addr; - spin_unlock_irqrestore(&fm->lock, flags); - device_unregister(&sock->dev); - spin_lock_irqsave(&fm->lock, flags); - tifm_7xx1_sock_power_off(sock_addr); - writel(0x0e00, sock_addr + SOCK_CONTROL); - } - - spin_unlock_irqrestore(&fm->lock, flags); - - media_id = tifm_7xx1_toggle_sock_power( - tifm_7xx1_sock_addr(fm->addr, cnt)); - - // tifm_alloc_device will check if media_id is valid - sock = tifm_alloc_device(fm, cnt, media_id); - if (sock) { - sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt); - - if (!device_register(&sock->dev)) { - spin_lock_irqsave(&fm->lock, flags); - if (!fm->sockets[cnt]) { - fm->sockets[cnt] = sock; - sock = NULL; - } - spin_unlock_irqrestore(&fm->lock, flags); - } - if (sock) - tifm_free_device(&sock->dev); - } - spin_lock_irqsave(&fm->lock, flags); - } - - writel(TIFM_IRQ_FIFOMASK(socket_change_set) - | TIFM_IRQ_CARDMASK(socket_change_set), - fm->addr + FM_CLEAR_INTERRUPT_ENABLE); - - writel(TIFM_IRQ_FIFOMASK(socket_change_set) - | TIFM_IRQ_CARDMASK(socket_change_set), - fm->addr + FM_SET_INTERRUPT_ENABLE); - - writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); - spin_unlock_irqrestore(&fm->lock, flags); -} - -#ifdef CONFIG_PM - -static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state) -{ - struct tifm_adapter *fm = pci_get_drvdata(dev); - int cnt; - - dev_dbg(&dev->dev, "suspending host\n"); - - for (cnt = 0; cnt < fm->num_sockets; cnt++) { - if (fm->sockets[cnt]) - tifm_7xx1_sock_power_off(fm->sockets[cnt]->addr); - } - - pci_save_state(dev); - pci_enable_wake(dev, pci_choose_state(dev, state), 0); - pci_disable_device(dev); - pci_set_power_state(dev, pci_choose_state(dev, state)); - return 0; -} - -static int tifm_7xx1_resume(struct pci_dev *dev) -{ - struct tifm_adapter *fm = pci_get_drvdata(dev); - int rc; - unsigned int good_sockets = 0, bad_sockets = 0; - unsigned long flags; - unsigned char new_ids[fm->num_sockets]; - DECLARE_COMPLETION_ONSTACK(finish_resume); - - pci_set_power_state(dev, PCI_D0); - pci_restore_state(dev); - rc = pci_enable_device(dev); - if (rc) - return rc; - pci_set_master(dev); - - dev_dbg(&dev->dev, "resuming host\n"); - - for (rc = 0; rc < fm->num_sockets; rc++) - new_ids[rc] = tifm_7xx1_toggle_sock_power( - tifm_7xx1_sock_addr(fm->addr, rc)); - spin_lock_irqsave(&fm->lock, flags); - for (rc = 0; rc < fm->num_sockets; rc++) { - if (fm->sockets[rc]) { - if (fm->sockets[rc]->type == new_ids[rc]) - good_sockets |= 1 << rc; - else - bad_sockets |= 1 << rc; - } - } - - writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), - fm->addr + FM_SET_INTERRUPT_ENABLE); - dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n", - good_sockets, bad_sockets); - - fm->socket_change_set = 0; - if (good_sockets) { - fm->finish_me = &finish_resume; - spin_unlock_irqrestore(&fm->lock, flags); - rc = wait_for_completion_timeout(&finish_resume, HZ); - dev_dbg(&dev->dev, "wait returned %d\n", rc); - writel(TIFM_IRQ_FIFOMASK(good_sockets) - | TIFM_IRQ_CARDMASK(good_sockets), - fm->addr + FM_CLEAR_INTERRUPT_ENABLE); - writel(TIFM_IRQ_FIFOMASK(good_sockets) - | TIFM_IRQ_CARDMASK(good_sockets), - fm->addr + FM_SET_INTERRUPT_ENABLE); - spin_lock_irqsave(&fm->lock, flags); - fm->finish_me = NULL; - fm->socket_change_set ^= good_sockets & fm->socket_change_set; - } - - fm->socket_change_set |= bad_sockets; - if (fm->socket_change_set) - tifm_queue_work(&fm->media_switcher); - - spin_unlock_irqrestore(&fm->lock, flags); - writel(TIFM_IRQ_ENABLE, - fm->addr + FM_SET_INTERRUPT_ENABLE); - - return 0; -} - -#else - -#define tifm_7xx1_suspend NULL -#define tifm_7xx1_resume NULL - -#endif /* CONFIG_PM */ - -static int tifm_7xx1_dummy_has_ms_pif(struct tifm_adapter *fm, - struct tifm_dev *sock) -{ - return 0; -} - -static int tifm_7xx1_has_ms_pif(struct tifm_adapter *fm, struct tifm_dev *sock) -{ - if (((fm->num_sockets == 4) && (sock->socket_id == 2)) - || ((fm->num_sockets == 2) && (sock->socket_id == 0))) - return 1; - - return 0; -} - -static int tifm_7xx1_probe(struct pci_dev *dev, - const struct pci_device_id *dev_id) -{ - struct tifm_adapter *fm; - int pci_dev_busy = 0; - int rc; - - rc = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); - if (rc) - return rc; - - rc = pci_enable_device(dev); - if (rc) - return rc; - - pci_set_master(dev); - - rc = pci_request_regions(dev, DRIVER_NAME); - if (rc) { - pci_dev_busy = 1; - goto err_out; - } - - pci_intx(dev, 1); - - fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM - ? 4 : 2, &dev->dev); - if (!fm) { - rc = -ENOMEM; - goto err_out_int; - } - - INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media); - fm->eject = tifm_7xx1_eject; - fm->has_ms_pif = tifm_7xx1_has_ms_pif; - pci_set_drvdata(dev, fm); - - fm->addr = pci_ioremap_bar(dev, 0); - if (!fm->addr) - goto err_out_free; - - rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm); - if (rc) - goto err_out_unmap; - - rc = tifm_add_adapter(fm); - if (rc) - goto err_out_irq; - - writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), - fm->addr + FM_CLEAR_INTERRUPT_ENABLE); - writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), - fm->addr + FM_SET_INTERRUPT_ENABLE); - return 0; - -err_out_irq: - free_irq(dev->irq, fm); -err_out_unmap: - iounmap(fm->addr); -err_out_free: - pci_set_drvdata(dev, NULL); - tifm_free_adapter(fm); -err_out_int: - pci_intx(dev, 0); - pci_release_regions(dev); -err_out: - if (!pci_dev_busy) - pci_disable_device(dev); - return rc; -} - -static void tifm_7xx1_remove(struct pci_dev *dev) -{ - struct tifm_adapter *fm = pci_get_drvdata(dev); - int cnt; - - fm->eject = tifm_7xx1_dummy_eject; - fm->has_ms_pif = tifm_7xx1_dummy_has_ms_pif; - writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); - mmiowb(); - free_irq(dev->irq, fm); - - tifm_remove_adapter(fm); - - for (cnt = 0; cnt < fm->num_sockets; cnt++) - tifm_7xx1_sock_power_off(tifm_7xx1_sock_addr(fm->addr, cnt)); - - pci_set_drvdata(dev, NULL); - - iounmap(fm->addr); - pci_intx(dev, 0); - pci_release_regions(dev); - - pci_disable_device(dev); - tifm_free_adapter(fm); -} - -static struct pci_device_id tifm_7xx1_pci_tbl [] = { - { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID, - PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */ - { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID, - PCI_ANY_ID, 0, 0, 0 }, - { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID, - PCI_ANY_ID, 0, 0, 0 }, - { } -}; - -static struct pci_driver tifm_7xx1_driver = { - .name = DRIVER_NAME, - .id_table = tifm_7xx1_pci_tbl, - .probe = tifm_7xx1_probe, - .remove = tifm_7xx1_remove, - .suspend = tifm_7xx1_suspend, - .resume = tifm_7xx1_resume, -}; - -static int __init tifm_7xx1_init(void) -{ - return pci_register_driver(&tifm_7xx1_driver); -} - -static void __exit tifm_7xx1_exit(void) -{ - pci_unregister_driver(&tifm_7xx1_driver); -} - -MODULE_AUTHOR("Alex Dubov"); -MODULE_DESCRIPTION("TI FlashMedia host driver"); -MODULE_LICENSE("GPL"); -MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl); -MODULE_VERSION(DRIVER_VERSION); - -module_init(tifm_7xx1_init); -module_exit(tifm_7xx1_exit); |