Lines Matching refs:dev
221 static int spear_smi_read_sr(struct spear_smi *dev, u32 bank) in spear_smi_read_sr() argument
226 mutex_lock(&dev->lock); in spear_smi_read_sr()
227 dev->status = 0; /* Will be set in interrupt handler */ in spear_smi_read_sr()
229 ctrlreg1 = readl(dev->io_base + SMI_CR1); in spear_smi_read_sr()
231 writel(ctrlreg1 & ~(SW_MODE | WB_MODE), dev->io_base + SMI_CR1); in spear_smi_read_sr()
235 dev->io_base + SMI_CR2); in spear_smi_read_sr()
238 ret = wait_event_interruptible_timeout(dev->cmd_complete, in spear_smi_read_sr()
239 dev->status & TFF, SMI_CMD_TIMEOUT); in spear_smi_read_sr()
243 ret = dev->status & 0xffff; in spear_smi_read_sr()
248 writel(ctrlreg1, dev->io_base + SMI_CR1); in spear_smi_read_sr()
249 writel(0, dev->io_base + SMI_CR2); in spear_smi_read_sr()
250 mutex_unlock(&dev->lock); in spear_smi_read_sr()
264 static int spear_smi_wait_till_ready(struct spear_smi *dev, u32 bank, in spear_smi_wait_till_ready() argument
272 status = spear_smi_read_sr(dev, bank); in spear_smi_wait_till_ready()
284 dev_err(&dev->pdev->dev, "smi controller is busy, timeout\n"); in spear_smi_wait_till_ready()
299 struct spear_smi *dev = dev_id; in spear_smi_int_handler() local
301 status = readl(dev->io_base + SMI_SR); in spear_smi_int_handler()
307 writel(0, dev->io_base + SMI_SR); in spear_smi_int_handler()
310 dev->status |= status; in spear_smi_int_handler()
313 wake_up_interruptible(&dev->cmd_complete); in spear_smi_int_handler()
324 static void spear_smi_hw_init(struct spear_smi *dev) in spear_smi_hw_init() argument
330 rate = clk_get_rate(dev->clk); in spear_smi_hw_init()
333 prescale = DIV_ROUND_UP(rate, dev->clk_rate); in spear_smi_hw_init()
341 mutex_lock(&dev->lock); in spear_smi_hw_init()
343 writel(0, dev->io_base + SMI_SR); in spear_smi_hw_init()
345 writel(val, dev->io_base + SMI_CR1); in spear_smi_hw_init()
346 mutex_unlock(&dev->lock); in spear_smi_hw_init()
379 static int spear_smi_write_enable(struct spear_smi *dev, u32 bank) in spear_smi_write_enable() argument
384 mutex_lock(&dev->lock); in spear_smi_write_enable()
385 dev->status = 0; /* Will be set in interrupt handler */ in spear_smi_write_enable()
387 ctrlreg1 = readl(dev->io_base + SMI_CR1); in spear_smi_write_enable()
389 writel(ctrlreg1 & ~SW_MODE, dev->io_base + SMI_CR1); in spear_smi_write_enable()
392 writel((bank << BANK_SHIFT) | WE | TFIE, dev->io_base + SMI_CR2); in spear_smi_write_enable()
394 ret = wait_event_interruptible_timeout(dev->cmd_complete, in spear_smi_write_enable()
395 dev->status & TFF, SMI_CMD_TIMEOUT); in spear_smi_write_enable()
398 writel(ctrlreg1, dev->io_base + SMI_CR1); in spear_smi_write_enable()
399 writel(0, dev->io_base + SMI_CR2); in spear_smi_write_enable()
403 dev_err(&dev->pdev->dev, in spear_smi_write_enable()
407 if (dev->status & (1 << (bank + WM_SHIFT))) in spear_smi_write_enable()
410 dev_err(&dev->pdev->dev, "couldn't enable write\n"); in spear_smi_write_enable()
415 mutex_unlock(&dev->lock); in spear_smi_write_enable()
444 static int spear_smi_erase_sector(struct spear_smi *dev, in spear_smi_erase_sector() argument
450 ret = spear_smi_wait_till_ready(dev, bank, SMI_MAX_TIME_OUT); in spear_smi_erase_sector()
454 ret = spear_smi_write_enable(dev, bank); in spear_smi_erase_sector()
458 mutex_lock(&dev->lock); in spear_smi_erase_sector()
460 ctrlreg1 = readl(dev->io_base + SMI_CR1); in spear_smi_erase_sector()
461 writel((ctrlreg1 | SW_MODE) & ~WB_MODE, dev->io_base + SMI_CR1); in spear_smi_erase_sector()
464 writel(command, dev->io_base + SMI_TR); in spear_smi_erase_sector()
467 dev->io_base + SMI_CR2); in spear_smi_erase_sector()
469 ret = wait_event_interruptible_timeout(dev->cmd_complete, in spear_smi_erase_sector()
470 dev->status & TFF, SMI_CMD_TIMEOUT); in spear_smi_erase_sector()
474 dev_err(&dev->pdev->dev, "sector erase failed\n"); in spear_smi_erase_sector()
479 writel(ctrlreg1, dev->io_base + SMI_CR1); in spear_smi_erase_sector()
480 writel(0, dev->io_base + SMI_CR2); in spear_smi_erase_sector()
482 mutex_unlock(&dev->lock); in spear_smi_erase_sector()
497 struct spear_smi *dev = mtd->priv; in spear_mtd_erase() local
501 if (!flash || !dev) in spear_mtd_erase()
505 if (bank > dev->num_flashes - 1) { in spear_mtd_erase()
506 dev_err(&dev->pdev->dev, "Invalid Bank Num"); in spear_mtd_erase()
519 ret = spear_smi_erase_sector(dev, bank, command, 4); in spear_mtd_erase()
549 struct spear_smi *dev = mtd->priv; in spear_mtd_read() local
554 if (!flash || !dev) in spear_mtd_read()
557 if (flash->bank > dev->num_flashes - 1) { in spear_mtd_read()
558 dev_err(&dev->pdev->dev, "Invalid Bank Num"); in spear_mtd_read()
568 ret = spear_smi_wait_till_ready(dev, flash->bank, SMI_MAX_TIME_OUT); in spear_mtd_read()
574 mutex_lock(&dev->lock); in spear_mtd_read()
576 ctrlreg1 = val = readl(dev->io_base + SMI_CR1); in spear_mtd_read()
581 writel(val, dev->io_base + SMI_CR1); in spear_mtd_read()
586 writel(ctrlreg1, dev->io_base + SMI_CR1); in spear_mtd_read()
587 mutex_unlock(&dev->lock); in spear_mtd_read()
615 static inline int spear_smi_cpy_toio(struct spear_smi *dev, u32 bank, in spear_smi_cpy_toio() argument
622 ret = spear_smi_wait_till_ready(dev, bank, SMI_MAX_TIME_OUT); in spear_smi_cpy_toio()
627 ret = spear_smi_write_enable(dev, bank); in spear_smi_cpy_toio()
632 mutex_lock(&dev->lock); in spear_smi_cpy_toio()
634 ctrlreg1 = readl(dev->io_base + SMI_CR1); in spear_smi_cpy_toio()
635 writel((ctrlreg1 | WB_MODE) & ~SW_MODE, dev->io_base + SMI_CR1); in spear_smi_cpy_toio()
655 writel(ctrlreg1, dev->io_base + SMI_CR1); in spear_smi_cpy_toio()
657 mutex_unlock(&dev->lock); in spear_smi_cpy_toio()
678 struct spear_smi *dev = mtd->priv; in spear_mtd_write() local
683 if (!flash || !dev) in spear_mtd_write()
686 if (flash->bank > dev->num_flashes - 1) { in spear_mtd_write()
687 dev_err(&dev->pdev->dev, "Invalid Bank Num"); in spear_mtd_write()
699 ret = spear_smi_cpy_toio(dev, flash->bank, dest, buf, len); in spear_mtd_write()
708 ret = spear_smi_cpy_toio(dev, flash->bank, dest, buf, in spear_mtd_write()
721 ret = spear_smi_cpy_toio(dev, flash->bank, dest + i, in spear_mtd_write()
745 static int spear_smi_probe_flash(struct spear_smi *dev, u32 bank) in spear_smi_probe_flash() argument
750 ret = spear_smi_wait_till_ready(dev, bank, SMI_PROBE_TIMEOUT); in spear_smi_probe_flash()
754 mutex_lock(&dev->lock); in spear_smi_probe_flash()
756 dev->status = 0; /* Will be set in interrupt handler */ in spear_smi_probe_flash()
758 val = readl(dev->io_base + SMI_CR1); in spear_smi_probe_flash()
759 writel(val | SW_MODE, dev->io_base + SMI_CR1); in spear_smi_probe_flash()
762 writel(OPCODE_RDID, dev->io_base + SMI_TR); in spear_smi_probe_flash()
766 writel(val, dev->io_base + SMI_CR2); in spear_smi_probe_flash()
769 ret = wait_event_interruptible_timeout(dev->cmd_complete, in spear_smi_probe_flash()
770 dev->status & TFF, SMI_CMD_TIMEOUT); in spear_smi_probe_flash()
777 val = readl(dev->io_base + SMI_RR); in spear_smi_probe_flash()
783 val = readl(dev->io_base + SMI_CR1); in spear_smi_probe_flash()
784 writel(val & ~SW_MODE, dev->io_base + SMI_CR1); in spear_smi_probe_flash()
786 mutex_unlock(&dev->lock); in spear_smi_probe_flash()
795 struct spear_smi_plat_data *pdata = dev_get_platdata(&pdev->dev); in spear_smi_probe_config_dt()
808 pdata->board_flash_info = devm_kzalloc(&pdev->dev, in spear_smi_probe_config_dt()
844 struct spear_smi *dev = platform_get_drvdata(pdev); in spear_smi_setup_banks() local
853 pdata = dev_get_platdata(&pdev->dev); in spear_smi_setup_banks()
861 flash = devm_kzalloc(&pdev->dev, sizeof(*flash), GFP_ATOMIC); in spear_smi_setup_banks()
869 flash_index = spear_smi_probe_flash(dev, bank); in spear_smi_setup_banks()
871 dev_info(&dev->pdev->dev, "smi-nor%d not found\n", bank); in spear_smi_setup_banks()
875 flash->base_addr = devm_ioremap(&pdev->dev, flash_info->mem_base, in spear_smi_setup_banks()
880 dev->flash[bank] = flash; in spear_smi_setup_banks()
881 flash->mtd.priv = dev; in spear_smi_setup_banks()
888 flash->mtd.dev.parent = &pdev->dev; in spear_smi_setup_banks()
903 dev_info(&dev->pdev->dev, "mtd .name=%s .size=%llx(%lluM)\n", in spear_smi_setup_banks()
907 dev_info(&dev->pdev->dev, ".erasesize = 0x%x(%uK)\n", in spear_smi_setup_banks()
919 dev_err(&dev->pdev->dev, "Err MTD partition=%d\n", ret); in spear_smi_setup_banks()
937 struct device_node *np = pdev->dev.of_node; in spear_smi_probe()
939 struct spear_smi *dev; in spear_smi_probe() local
944 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); in spear_smi_probe()
949 pdev->dev.platform_data = pdata; in spear_smi_probe()
953 dev_err(&pdev->dev, "no platform data\n"); in spear_smi_probe()
957 pdata = dev_get_platdata(&pdev->dev); in spear_smi_probe()
960 dev_err(&pdev->dev, "no platform data\n"); in spear_smi_probe()
971 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); in spear_smi_probe()
972 if (!dev) { in spear_smi_probe()
977 dev->io_base = devm_platform_ioremap_resource(pdev, 0); in spear_smi_probe()
978 if (IS_ERR(dev->io_base)) { in spear_smi_probe()
979 ret = PTR_ERR(dev->io_base); in spear_smi_probe()
983 dev->pdev = pdev; in spear_smi_probe()
984 dev->clk_rate = pdata->clk_rate; in spear_smi_probe()
986 if (dev->clk_rate > SMI_MAX_CLOCK_FREQ) in spear_smi_probe()
987 dev->clk_rate = SMI_MAX_CLOCK_FREQ; in spear_smi_probe()
989 dev->num_flashes = pdata->num_flashes; in spear_smi_probe()
991 if (dev->num_flashes > MAX_NUM_FLASH_CHIP) { in spear_smi_probe()
992 dev_err(&pdev->dev, "exceeding max number of flashes\n"); in spear_smi_probe()
993 dev->num_flashes = MAX_NUM_FLASH_CHIP; in spear_smi_probe()
996 dev->clk = devm_clk_get_enabled(&pdev->dev, NULL); in spear_smi_probe()
997 if (IS_ERR(dev->clk)) { in spear_smi_probe()
998 ret = PTR_ERR(dev->clk); in spear_smi_probe()
1002 ret = devm_request_irq(&pdev->dev, irq, spear_smi_int_handler, 0, in spear_smi_probe()
1003 pdev->name, dev); in spear_smi_probe()
1005 dev_err(&dev->pdev->dev, "SMI IRQ allocation failed\n"); in spear_smi_probe()
1009 mutex_init(&dev->lock); in spear_smi_probe()
1010 init_waitqueue_head(&dev->cmd_complete); in spear_smi_probe()
1011 spear_smi_hw_init(dev); in spear_smi_probe()
1012 platform_set_drvdata(pdev, dev); in spear_smi_probe()
1015 for (i = 0; i < dev->num_flashes; i++) { in spear_smi_probe()
1018 dev_err(&dev->pdev->dev, "bank setup failed\n"); in spear_smi_probe()
1036 struct spear_smi *dev; in spear_smi_remove() local
1040 dev = platform_get_drvdata(pdev); in spear_smi_remove()
1043 for (i = 0; i < dev->num_flashes; i++) { in spear_smi_remove()
1044 flash = dev->flash[i]; in spear_smi_remove()
1056 static int spear_smi_suspend(struct device *dev) in spear_smi_suspend() argument
1058 struct spear_smi *sdev = dev_get_drvdata(dev); in spear_smi_suspend()
1066 static int spear_smi_resume(struct device *dev) in spear_smi_resume() argument
1068 struct spear_smi *sdev = dev_get_drvdata(dev); in spear_smi_resume()