diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/core/core.c | 6 | ||||
| -rw-r--r-- | drivers/mmc/core/core.h | 4 | ||||
| -rw-r--r-- | drivers/mmc/core/host.c | 39 | ||||
| -rw-r--r-- | drivers/mmc/core/sdio_irq.c | 4 | ||||
| -rw-r--r-- | drivers/mmc/core/sdio_ops.c | 1 | ||||
| -rw-r--r-- | drivers/mmc/host/omap.c | 995 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 100 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 9 |
8 files changed, 776 insertions, 382 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index b96667448eb5..01ced4c5a61d 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -35,10 +35,6 @@ #include "sd_ops.h" #include "sdio_ops.h" -extern int mmc_attach_mmc(struct mmc_host *host, u32 ocr); -extern int mmc_attach_sd(struct mmc_host *host, u32 ocr); -extern int mmc_attach_sdio(struct mmc_host *host, u32 ocr); - static struct workqueue_struct *workqueue; /* @@ -516,7 +512,7 @@ static void mmc_power_off(struct mmc_host *host) /* * Cleanup when the last reference to the bus operator is dropped. */ -void __mmc_release_bus(struct mmc_host *host) +static void __mmc_release_bus(struct mmc_host *host) { BUG_ON(!host); BUG_ON(host->bus_refs); diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index cfa8e15b5923..cdb332b7dedc 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -46,6 +46,10 @@ void mmc_rescan(struct work_struct *work); void mmc_start_host(struct mmc_host *host); void mmc_stop_host(struct mmc_host *host); +int mmc_attach_mmc(struct mmc_host *host, u32 ocr); +int mmc_attach_sd(struct mmc_host *host, u32 ocr); +int mmc_attach_sdio(struct mmc_host *host, u32 ocr); + extern int use_spi_crc; #endif diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index c65d203a846d..1d795c5379b5 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -2,7 +2,7 @@ * linux/drivers/mmc/core/host.c * * Copyright (C) 2003 Russell King, All Rights Reserved. - * Copyright (C) 2007 Pierre Ossman + * Copyright (C) 2007-2008 Pierre Ossman * * 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 @@ -57,12 +57,25 @@ static DEFINE_SPINLOCK(mmc_host_lock); */ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) { + int err; struct mmc_host *host; + if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL)) + return NULL; + host = kzalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL); if (!host) return NULL; + spin_lock(&mmc_host_lock); + err = idr_get_new(&mmc_host_idr, host, &host->index); + spin_unlock(&mmc_host_lock); + if (err) + goto free; + + snprintf(host->class_dev.bus_id, BUS_ID_SIZE, + "mmc%d", host->index); + host->parent = dev; host->class_dev.parent = dev; host->class_dev.class = &mmc_host_class; @@ -85,6 +98,10 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) host->max_blk_count = PAGE_CACHE_SIZE / 512; return host; + +free: + kfree(host); + return NULL; } EXPORT_SYMBOL(mmc_alloc_host); @@ -104,18 +121,6 @@ int mmc_add_host(struct mmc_host *host) WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) && !host->ops->enable_sdio_irq); - if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL)) - return -ENOMEM; - - spin_lock(&mmc_host_lock); - err = idr_get_new(&mmc_host_idr, host, &host->index); - spin_unlock(&mmc_host_lock); - if (err) - return err; - - snprintf(host->class_dev.bus_id, BUS_ID_SIZE, - "mmc%d", host->index); - led_trigger_register_simple(host->class_dev.bus_id, &host->led); err = device_add(&host->class_dev); @@ -144,10 +149,6 @@ void mmc_remove_host(struct mmc_host *host) device_del(&host->class_dev); led_trigger_unregister_simple(host->led); - - spin_lock(&mmc_host_lock); - idr_remove(&mmc_host_idr, host->index); - spin_unlock(&mmc_host_lock); } EXPORT_SYMBOL(mmc_remove_host); @@ -160,6 +161,10 @@ EXPORT_SYMBOL(mmc_remove_host); */ void mmc_free_host(struct mmc_host *host) { + spin_lock(&mmc_host_lock); + idr_remove(&mmc_host_idr, host->index); + spin_unlock(&mmc_host_lock); + put_device(&host->class_dev); } diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c index 3bd3021f5e80..c292e124107a 100644 --- a/drivers/mmc/core/sdio_irq.c +++ b/drivers/mmc/core/sdio_irq.c @@ -128,12 +128,12 @@ static int sdio_irq_thread(void *_host) } } - set_task_state(current, TASK_INTERRUPTIBLE); + set_current_state(TASK_INTERRUPTIBLE); if (host->caps & MMC_CAP_SDIO_IRQ) host->ops->enable_sdio_irq(host, 1); if (!kthread_should_stop()) schedule_timeout(period); - set_task_state(current, TASK_RUNNING); + set_current_state(TASK_RUNNING); } while (!kthread_should_stop()); if (host->caps & MMC_CAP_SDIO_IRQ) diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c index e1fca588e385..c8fa095a4488 100644 --- a/drivers/mmc/core/sdio_ops.c +++ b/drivers/mmc/core/sdio_ops.c @@ -17,6 +17,7 @@ #include <linux/mmc/sdio.h> #include "core.h" +#include "sdio_ops.h" int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) { diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c index 90c358b57d1c..14759e9f42ad 100644 --- a/drivers/mmc/host/omap.c +++ b/drivers/mmc/host/omap.c @@ -32,6 +32,7 @@ #include <asm/mach-types.h> #include <asm/arch/board.h> +#include <asm/arch/mmc.h> #include <asm/arch/gpio.h> #include <asm/arch/dma.h> #include <asm/arch/mux.h> @@ -93,9 +94,27 @@ /* Specifies how often in millisecs to poll for card status changes * when the cover switch is open */ -#define OMAP_MMC_SWITCH_POLL_DELAY 500 - -static int mmc_omap_enable_poll = 1; +#define OMAP_MMC_COVER_POLL_DELAY 500 + +struct mmc_omap_host; + +struct mmc_omap_slot { + int id; + unsigned int vdd; + u16 saved_con; + u16 bus_mode; + unsigned int fclk_freq; + unsigned powered:1; + + struct tasklet_struct cover_tasklet; + struct timer_list cover_timer; + unsigned cover_open; + + struct mmc_request *mrq; + struct mmc_omap_host *host; + struct mmc_host *mmc; + struct omap_mmc_slot_data *pdata; +}; struct mmc_omap_host { int initialized; @@ -115,6 +134,15 @@ struct mmc_omap_host { unsigned char bus_mode; unsigned char hw_bus_mode; + struct work_struct cmd_abort_work; + unsigned abort:1; + struct timer_list cmd_abort_timer; + + struct work_struct slot_release_work; + struct mmc_omap_slot *next_slot; + struct work_struct send_stop_work; + struct mmc_data *stop_data; + unsigned int sg_len; int sg_idx; u16 * buffer; @@ -131,63 +159,178 @@ struct mmc_omap_host { unsigned dma_len; short power_pin; - short wp_pin; - int switch_pin; - struct work_struct switch_work; - struct timer_list switch_timer; - int switch_last_state; + struct mmc_omap_slot *slots[OMAP_MMC_MAX_SLOTS]; + struct mmc_omap_slot *current_slot; + spinlock_t slot_lock; + wait_queue_head_t slot_wq; + int nr_slots; + + struct timer_list clk_timer; + spinlock_t clk_lock; /* for changing enabled state */ + unsigned int fclk_enabled:1; + + struct omap_mmc_platform_data *pdata; }; -static inline int -mmc_omap_cover_is_open(struct mmc_omap_host *host) +void mmc_omap_fclk_offdelay(struct mmc_omap_slot *slot) { - if (host->switch_pin < 0) - return 0; - return omap_get_gpio_datain(host->switch_pin); + unsigned long tick_ns; + + if (slot != NULL && slot->host->fclk_enabled && slot->fclk_freq > 0) { + tick_ns = (1000000000 + slot->fclk_freq - 1) / slot->fclk_freq; + ndelay(8 * tick_ns); + } } -static ssize_t -mmc_omap_show_cover_switch(struct device *dev, - struct device_attribute *attr, char *buf) +void mmc_omap_fclk_enable(struct mmc_omap_host *host, unsigned int enable) { - struct mmc_omap_host *host = dev_get_drvdata(dev); + unsigned long flags; - return sprintf(buf, "%s\n", mmc_omap_cover_is_open(host) ? "open" : - "closed"); + spin_lock_irqsave(&host->clk_lock, flags); + if (host->fclk_enabled != enable) { + host->fclk_enabled = enable; + if (enable) + clk_enable(host->fclk); + else + clk_disable(host->fclk); + } + spin_unlock_irqrestore(&host->clk_lock, flags); } -static DEVICE_ATTR(cover_switch, S_IRUGO, mmc_omap_show_cover_switch, NULL); +static void mmc_omap_select_slot(struct mmc_omap_slot *slot, int claimed) +{ + struct mmc_omap_host *host = slot->host; + unsigned long flags; -static ssize_t -mmc_omap_show_enable_poll(struct device *dev, - struct device_attribute *attr, char *buf) + if (claimed) + goto no_claim; + spin_lock_irqsave(&host->slot_lock, flags); + while (host->mmc != NULL) { + spin_unlock_irqrestore(&host->slot_lock, flags); + wait_event(host->slot_wq, host->mmc == NULL); + spin_lock_irqsave(&host->slot_lock, flags); + } + host->mmc = slot->mmc; + spin_unlock_irqrestore(&host->slot_lock, flags); +no_claim: + del_timer(&host->clk_timer); + if (host->current_slot != slot || !claimed) + mmc_omap_fclk_offdelay(host->current_slot); + + if (host->current_slot != slot) { + OMAP_MMC_WRITE(host, CON, slot->saved_con & 0xFC00); + if (host->pdata->switch_slot != NULL) + host->pdata->switch_slot(mmc_dev(slot->mmc), slot->id); + host->current_slot = slot; + } + + if (claimed) { + mmc_omap_fclk_enable(host, 1); + + /* Doing the dummy read here seems to work around some bug + * at least in OMAP24xx silicon where the command would not + * start after writing the CMD register. Sigh. */ + OMAP_MMC_READ(host, CON); + + OMAP_MMC_WRITE(host, CON, slot->saved_con); + } else + mmc_omap_fclk_enable(host, 0); +} + +static void mmc_omap_start_request(struct mmc_omap_host *host, + struct mmc_request *req); + +static void mmc_omap_slot_release_work(struct work_struct *work) { - return snprintf(buf, PAGE_SIZE, "%d\n", mmc_omap_enable_poll); + struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, + slot_release_work); + struct mmc_omap_slot *next_slot = host->next_slot; + struct mmc_request *rq; + + host->next_slot = NULL; + mmc_omap_select_slot(next_slot, 1); + + rq = next_slot->mrq; + next_slot->mrq = NULL; + mmc_omap_start_request(host, rq); } -static ssize_t -mmc_omap_store_enable_poll(struct device *dev, - struct device_attribute *attr, const char *buf, - size_t size) +static void mmc_omap_release_slot(struct mmc_omap_slot *slot, int clk_enabled) { - int enable_poll; + struct mmc_omap_host *host = slot->host; + unsigned long flags; + int i; + + BUG_ON(slot == NULL || host->mmc == NULL); + + if (clk_enabled) + /* Keeps clock running for at least 8 cycles on valid freq */ + mod_timer(&host->clk_timer, jiffies + HZ/10); + else { + del_timer(&host->clk_timer); + mmc_omap_fclk_offdelay(slot); + mmc_omap_fclk_enable(host, 0); + } - if (sscanf(buf, "%10d", &enable_poll) != 1) - return -EINVAL; + spin_lock_irqsave(&host->slot_lock, flags); + /* Check for any pending requests */ + for (i = 0; i < host->nr_slots; i++) { + struct mmc_omap_slot *new_slot; - if (enable_poll != mmc_omap_enable_poll) { - struct mmc_omap_host *host = dev_get_drvdata(dev); + if (host->slots[i] == NULL || host->slots[i]->mrq == NULL) + continue; - mmc_omap_enable_poll = enable_poll; - if (enable_poll && host->switch_pin >= 0) - schedule_work(&host->switch_work); + BUG_ON(host->next_slot != NULL); + new_slot = host->slots[i]; + /* The current slot should not have a request in queue */ + BUG_ON(new_slot == host->current_slot); + + host->next_slot = new_slot; + host->mmc = new_slot->mmc; + spin_unlock_irqrestore(&host->slot_lock, flags); + schedule_work(&host->slot_release_work); + return; } - return size; + + host->mmc = NULL; + wake_up(&host->slot_wq); + spin_unlock_irqrestore(&host->slot_lock, flags); +} + +static inline +int mmc_omap_cover_is_open(struct mmc_omap_slot *slot) +{ + if (slot->pdata->get_cover_state) + return slot->pdata->get_cover_state(mmc_dev(slot->mmc), + slot->id); + return 0; +} + +static ssize_t +mmc_omap_show_cover_switch(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); + struct mmc_omap_slot *slot = mmc_priv(mmc); + + return sprintf(buf, "%s\n", mmc_omap_cover_is_open(slot) ? "open" : + "closed"); } -static DEVICE_ATTR(enable_poll, 0664, - mmc_omap_show_enable_poll, mmc_omap_store_enable_poll); +static DEVICE_ATTR(cover_switch, S_IRUGO, mmc_omap_show_cover_switch, NULL); + +static ssize_t +mmc_omap_show_slot_name(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); + struct mmc_omap_slot *slot = mmc_priv(mmc); + + return sprintf(buf, "%s\n", slot->pdata->name); +} + +static DEVICE_ATTR(slot_name, S_IRUGO, mmc_omap_show_slot_name, NULL); static void mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd) @@ -233,7 +376,7 @@ mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd) cmdreg = cmd->opcode | (resptype << 8) | (cmdtype << 12); - if (host->bus_mode == MMC_BUSMODE_OPENDRAIN) + if (host->current_slot->bus_mode == MMC_BUSMODE_OPENDRAIN) cmdreg |= 1 << 6; if (cmd->flags & MMC_RSP_BUSY) @@ -242,7 +385,7 @@ mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd) if (host->data && !(host->data->flags & MMC_DATA_WRITE)) cmdreg |= 1 << 15; - clk_enable(host->fclk); + mod_timer(&host->cmd_abort_timer, jiffies + HZ/2); OMAP_MMC_WRITE(host, CTO, 200); OMAP_MMC_WRITE(host, ARGL, cmd->arg & 0xffff); @@ -257,26 +400,46 @@ mmc_omap_start_command(struct mmc_omap_host *host, struct mmc_command *cmd) } static void +mmc_omap_release_dma(struct mmc_omap_host *host, struct mmc_data *data, + int abort) +{ + enum dma_data_direction dma_data_dir; + + BUG_ON(host->dma_ch < 0); + if (data->error) + omap_stop_dma(host->dma_ch); + /* Release DMA channel lazily */ + mod_timer(&host->dma_timer, jiffies + HZ); + if (data->flags & MMC_DATA_WRITE) + dma_data_dir = DMA_TO_DEVICE; + else + dma_data_dir = DMA_FROM_DEVICE; + dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len, + dma_data_dir); +} + +static void mmc_omap_send_stop_work(struct work_struct *work) +{ + struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, + send_stop_work); + struct mmc_omap_slot *slot = host->current_slot; + struct mmc_data *data = host->stop_data; + unsigned long tick_ns; + + tick_ns = (1000000000 + slot->fclk_freq - 1)/slot->fclk_freq; + ndelay(8*tick_ns); + + mmc_omap_start_command(host, data->stop); +} + +static void mmc_omap_xfer_done(struct mmc_omap_host *host, struct mmc_data *data) { - if (host->dma_in_use) { - enum dma_data_direction dma_data_dir; - - BUG_ON(host->dma_ch < 0); - if (data->error) - omap_stop_dma(host->dma_ch); - /* Release DMA channel lazily */ - mod_timer(&host->dma_timer, jiffies + HZ); - if (data->flags & MMC_DATA_WRITE) - dma_data_dir = DMA_TO_DEVICE; - else - dma_data_dir = DMA_FROM_DEVICE; - dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len, - dma_data_dir); - } + if (host->dma_in_use) + mmc_omap_release_dma(host, data, data->error); + host->data = NULL; host->sg_len = 0; - clk_disable(host->fclk); /* NOTE: MMC layer will sometimes poll-wait CMD13 next, issuing * dozens of requests until the card finishes writing data. @@ -284,12 +447,58 @@ mmc_omap_xfer_done(struct mmc_omap_host *host, struct mmc_data *data) */ if (!data->stop) { + struct mmc_host *mmc; + host->mrq = NULL; - mmc_request_done(host->mmc, data->mrq); + mmc = host->mmc; + mmc_omap_release_slot(host->current_slot, 1); + mmc_request_done(mmc, data->mrq); return; } - mmc_omap_start_command(host, data->stop); + host->stop_data = data; + schedule_work(&host->send_stop_work); +} + +static void +mmc_omap_send_abort(struct mmc_omap_host *host, int maxloops) +{ + struct mmc_omap_slot *slot = host->current_slot; + unsigned int restarts, passes, timeout; + u16 stat = 0; + + /* Sending abort takes 80 clocks. Have some extra and round up */ + timeout = (120*1000000 + slot->fclk_freq - 1)/slot->fclk_freq; + restarts = 0; + while (restarts < maxloops) { + OMAP_MMC_WRITE(host, STAT, 0xFFFF); + OMAP_MMC_WRITE(host, CMD, (3 << 12) | (1 << 7)); + + passes = 0; + while (passes < timeout) { + stat = OMAP_MMC_READ(host, STAT); + if (stat & OMAP_MMC_STAT_END_OF_CMD) + goto out; + udelay(1); + passes++; + } + + restarts++; + } +out: + OMAP_MMC_WRITE(host, STAT, stat); +} + +static void +mmc_omap_abort_xfer(struct mmc_omap_host *host, struct mmc_data *data) +{ + if (host->dma_in_use) + mmc_omap_release_dma(host, data, 1); + + host->data = NULL; + host->sg_len = 0; + + mmc_omap_send_abort(host, 10000); } static void @@ -345,6 +554,8 @@ mmc_omap_cmd_done(struct mmc_omap_host *host, struct mmc_command *cmd) { host->cmd = NULL; + del_timer(&host->cmd_abort_timer); + if (cmd->flags & MMC_RSP_PRESENT) { if (cmd->flags & MMC_RSP_136) { /* response type 2 */ @@ -369,10 +580,66 @@ mmc_omap_cmd_done(struct mmc_omap_host *host, struct mmc_command *cmd) } if (host->data == NULL || cmd->error) { + struct mmc_host *mmc; + + if (host->data != NULL) + mmc_omap_abort_xfer(host, host->data); host->mrq = NULL; - clk_disable(host->fclk); - mmc_request_done(host->mmc, cmd->mrq); + mmc = host->mmc; + mmc_omap_release_slot(host->current_slot, 1); + mmc_request_done(mmc, cmd->mrq); + } +} + +/* + * Abort stuck command. Can occur when card is removed while it is being + * read. + */ +static void mmc_omap_abort_command(struct work_struct *work) +{ + struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, + cmd_abort_work); + BUG_ON(!host->cmd); + + dev_dbg(mmc_dev(host->mmc), "Aborting stuck command CMD%d\n", + host->cmd->opcode); + + if (host->cmd->error == 0) + host->cmd->error = -ETIMEDOUT; + + if (host->data == NULL) { + struct mmc_command *cmd; + struct mmc_host *mmc; + + cmd = host->cmd; + host->cmd = NULL; + mmc_omap_send_abort(host, 10000); + + host->mrq = NULL; + mmc = host->mmc; + mmc_omap_release_slot(host->current_slot, 1); + mmc_request_done(mmc, cmd->mrq); + } else + mmc_omap_cmd_done(host, host->cmd); + + host->abort = 0; + enable_irq(host->irq); +} + +static void +mmc_omap_cmd_timer(unsigned long data) +{ + struct mmc_omap_host *host = (struct mmc_omap_host *) data; + unsigned long flags; + + spin_lock_irqsave(&host->slot_lock, flags); + if (host->cmd != NULL && !host->abort) { + OMAP_MMC_WRITE(host, IE, 0); + disable_irq(host->irq); + host->abort = 1; + schedule_work(&host->cmd_abort_work); } + spin_unlock_irqrestore(&host->slot_lock, flags); } /* PIO only */ @@ -388,6 +655,14 @@ mmc_omap_sg_to_buf(struct mmc_omap_host *host) host->buffer_bytes_left = host->total_bytes_left; } +static void +mmc_omap_clk_timer(unsigned long data) +{ + struct mmc_omap_host *host = (struct mmc_omap_host *) data; + + mmc_omap_fclk_enable(host, 0); +} + /* PIO only */ static void mmc_omap_xfer_data(struct mmc_omap_host *host, int write) @@ -436,11 +711,12 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) u16 status; int end_command; int end_transfer; - int transfer_error; + int transfer_error, cmd_error; if (host->cmd == NULL && host->data == NULL) { status = OMAP_MMC_READ(host, STAT); - dev_info(mmc_dev(host->mmc),"spurious irq 0x%04x\n", status); + dev_info(mmc_dev(host->slots[0]->mmc), + "Spurious IRQ 0x%04x\n", status); if (status != 0) { OMAP_MMC_WRITE(host, STAT, status); OMAP_MMC_WRITE(host, IE, 0); @@ -451,12 +727,19 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) end_command = 0; end_transfer = 0; transfer_error = 0; + cmd_error = 0; while ((status = OMAP_MMC_READ(host, STAT)) != 0) { + int cmd; + OMAP_MMC_WRITE(host, STAT, status); + if (host->cmd != NULL) + cmd = host->cmd->opcode; + else + cmd = -1; #ifdef CONFIG_MMC_DEBUG dev_dbg(mmc_dev(host->mmc), "MMC IRQ %04x (CMD %d): ", - status, host->cmd != NULL ? host->cmd->opcode : -1); + status, cmd); mmc_omap_report_irq(status); printk("\n"); #endif @@ -468,12 +751,12 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) mmc_omap_xfer_data(host, 1); } - if (status & OMAP_MMC_STAT_END_OF_DATA) { + if (status & OMAP_MMC_STAT_END_OF_DATA) end_transfer = 1; - } if (status & OMAP_MMC_STAT_DATA_TOUT) { - dev_dbg(mmc_dev(host->mmc), "data timeout\n"); + dev_dbg(mmc_dev(host->mmc), "data timeout (CMD%d)\n", + cmd); if (host->data) { host->data->error = -ETIMEDOUT; transfer_error = 1; @@ -495,17 +778,16 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) if (status & OMAP_MMC_STAT_CMD_TOUT) { /* Timeouts are routine with some commands */ if (host->cmd) { - if (host->cmd->opcode != MMC_ALL_SEND_CID && - host->cmd->opcode != - MMC_SEND_OP_COND && - host->cmd->opcode != - MMC_APP_CMD && - !mmc_omap_cover_is_open(host)) + struct mmc_omap_slot *slot = + host->current_slot; + if (slot == NULL || + !mmc_omap_cover_is_open(slot)) dev_err(mmc_dev(host->mmc), - "command timeout, CMD %d\n", - host->cmd->opcode); + "command timeout (CMD%d)\n", + cmd); host->cmd->error = -ETIMEDOUT; end_command = 1; + cmd_error = 1; } } @@ -513,9 +795,10 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) if (host->cmd) { dev_err(mmc_dev(host->mmc), "command CRC error (CMD%d, arg 0x%08x)\n", - host->cmd->opcode, host->cmd->arg); + cmd, host->cmd->arg); host->cmd->error = -EILSEQ; end_command = 1; + cmd_error = 1; } else dev_err(mmc_dev(host->mmc), "command CRC error without cmd?\n"); @@ -524,13 +807,13 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) if (status & OMAP_MMC_STAT_CARD_ERR) { dev_dbg(mmc_dev(host->mmc), "ignoring card status error (CMD%d)\n", - host->cmd->opcode); + cmd); end_command = 1; } /* * NOTE: On 1610 the END_OF_CMD may come too early when - * starting a write + * starting a write */ if ((status & OMAP_MMC_STAT_END_OF_CMD) && (!(status & OMAP_MMC_STAT_A_EMPTY))) { @@ -538,63 +821,72 @@ static irqreturn_t mmc_omap_irq(int irq, void *dev_id) } } - if (end_command) { + if (cmd_error && host->data) { + del_timer(&host->cmd_abort_timer); + host->abort = 1; + OMAP_MMC_WRITE(host, IE, 0); + disable_irq(host->irq); + schedule_work(&host->cmd_abort_work); + return IRQ_HANDLED; + } + + if (end_command) mmc_omap_cmd_done(host, host->cmd); + if (host->data != NULL) { + if (transfer_error) + mmc_omap_xfer_done(host, host->data); + else if (end_transfer) + mmc_omap_end_of_data(host, host->data); } - if (transfer_error) - mmc_omap_xfer_done(host, host->data); - else if (end_transfer) - mmc_omap_end_of_data(host, host->data); return IRQ_HANDLED; } -static irqreturn_t mmc_omap_switch_irq(int irq, void *dev_id) +void omap_mmc_notify_cover_event(struct device *dev, int num, int is_closed) { - struct mmc_omap_host *host = (struct mmc_omap_host *) dev_id; + int cover_open; + struct mmc_omap_host *host = dev_get_drvdata(dev); + struct mmc_omap_slot *slot = host->slots[num]; - schedule_work(&host->switch_work); + BUG_ON(num >= host->nr_slots); - return IRQ_HANDLED; + /* Other subsystems can call in here before we're initialised. */ + if (host->nr_slots == 0 || !host->slots[num]) + return; + + cover_open = mmc_omap_cover_is_open(slot); + if (cover_open != slot->cover_open) { + slot->cover_open = cover_open; + sysfs_notify(&slot->mmc->class_dev.kobj, NULL, "cover_switch"); + } + + tasklet_hi_schedule(&slot->cover_tasklet); } -static void mmc_omap_switch_timer(unsigned long arg) +static void mmc_omap_cover_timer(unsigned long arg) { - struct mmc_omap_host *host = (struct mmc_omap_host *) arg; - - schedule_work(&host->switch_work); + struct mmc_omap_slot *slot = (struct mmc_omap_slot *) arg; + tasklet_schedule(&slot->cover_tasklet); } -static void mmc_omap_switch_handler(struct work_struct *work) +static void mmc_omap_cover_handler(unsigned long param) { - struct mmc_omap_host *host = container_of(work, struct mmc_omap_host, switch_work); - struct mmc_card *card; - static int complained = 0; - int cards = 0, cover_open; + struct mmc_omap_slot *slot = (struct mmc_omap_slot *)param; + int cover_open = mmc_omap_cover_is_open(slot); - if (host->switch_pin == -1) + mmc_detect_change(slot->mmc, 0); + if (!cover_open) return; - cover_open = mmc_omap_cover_is_open(host); - if (cover_open != host->switch_last_state) { - kobject_uevent(&host->dev->kobj, KOBJ_CHANGE); - host->switch_last_state = cover_open; - } - mmc_detect_change(host->mmc, 0); - list_for_each_entry(card, &host->mmc->cards, node) { - if (mmc_card_present(card)) - cards++; - } - if (mmc_omap_cover_is_open(host)) { - if (!complained) { - dev_info(mmc_dev(host->mmc), "cover is open\n"); - complained = 1; - } - if (mmc_omap_enable_poll) - mod_timer(&host->switch_timer, jiffies + - msecs_to_jiffies(OMAP_MMC_SWITCH_POLL_DELAY)); - } else { - complained = 0; - } + + /* + * If no card is inserted, we postpone polling until + * the cover has been closed. + */ + if (slot->mmc->card == NULL || !mmc_card_present(slot->mmc->card)) + return; + + mod_timer(&slot->cover_timer, + jiffies + msecs_to_jiffies(OMAP_MMC_COVER_POLL_DELAY)); } /* Prepare to transfer the next segment of a scatterlist */ @@ -765,13 +1057,12 @@ static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_reques static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req) { - int timeout; + unsigned int timeout, cycle_ns; u16 reg; - /* Convert ns to clock cycles by assuming 20MHz frequency - * 1 cycle at 20MHz = 500 ns - */ - timeout = req->data->timeout_clks + req->data->timeout_ns / 500; + cycle_ns = 1000000000 / host->current_slot->fclk_freq; + timeout = req->data->timeout_ns / cycle_ns; + timeout += req->data->timeout_clks; /* Check if we need to use timeout multiplier register */ reg = OMAP_MMC_READ(host, SDIO); @@ -854,11 +1145,10 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req) } } -static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req) +static void mmc_omap_start_request(struct mmc_omap_host *host, + struct mmc_request *req) { - struct mmc_omap_host *host = mmc_priv(mmc); - - WARN_ON(host->mrq != NULL); + BUG_ON(host->mrq != NULL); host->mrq = req; @@ -867,60 +1157,56 @@ static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req) mmc_omap_start_command(host, req->cmd); if (host->dma_in_use) omap_start_dma(host->dma_ch); + BUG_ON(irqs_disabled()); } -static void innovator_fpga_socket_power(int on) +static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req) { -#if defined(CONFIG_MACH_OMAP_INNOVATOR) && defined(CONFIG_ARCH_OMAP15XX) - if (on) { - fpga_write(fpga_read(OMAP1510_FPGA_POWER) | (1 << 3), - OMAP1510_FPGA_POWER); - } else { - fpga_write(fpga_read(OMAP1510_FPGA_POWER) & ~(1 << 3), - OMAP1510_FPGA_POWER); - } -#endif + struct mmc_omap_slot *slot = mmc_priv(mmc); + struct mmc_omap_host *host = slot->host; + unsigned long flags; + + spin_lock_irqsave(&host->slot_lock, flags); + if (host->mmc != NULL) { + BUG_ON(slot->mrq != NULL); + slot->mrq = req; + spin_unlock_irqrestore(&host->slot_lock, flags); + return; + } else + host->mmc = mmc; + spin_unlock_irqrestore(&host->slot_lock, flags); + mmc_omap_select_slot(slot, 1); + mmc_omap_start_request(host, req); } -/* - * Turn the socket power on/off. Innovator uses FPGA, most boards - * probably use GPIO. - */ -static void mmc_omap_power(struct mmc_omap_host *host, int on) +static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on, + int vdd) { - if (on) { - if (machine_is_omap_innovator()) - innovator_fpga_socket_power(1); - else if (machine_is_omap_h2()) - tps65010_set_gpio_out_value(GPIO3, HIGH); - else if (machine_is_omap_h3()) - /* GPIO 4 of TPS65010 sends SD_EN signal */ - tps65010_set_gpio_out_value(GPIO4, HIGH); - else if (cpu_is_omap24xx()) { - u16 reg = OMAP_MMC_READ(host, CON); - OMAP_MMC_WRITE(host, CON, reg | (1 << 11)); - } else - if (host->power_pin >= 0) - omap_set_gpio_dataout(host->power_pin, 1); - } else { - if (machine_is_omap_innovator()) - innovator_fpga_socket_power(0); - else if (machine_is_omap_h2()) - tps65010_set_gpio_out_value(GPIO3, LOW); - else if (machine_is_omap_h3()) - tps65010_set_gpio_out_value(GPIO4, LOW); - else if (cpu_is_omap24xx()) { - u16 reg = OMAP_MMC_READ(host, CON); - OMAP_MMC_WRITE(host, CON, reg & ~(1 << 11)); - } else - if (host->power_pin >= 0) - omap_set_gpio_dataout(host->power_pin, 0); + struct mmc_omap_host *host; + + host = slot->host; + + if (slot->pdata->set_power != NULL) + slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on, + vdd); + + if (cpu_is_omap24xx()) { + u16 w; + + if (power_on) { + w = OMAP_MMC_READ(host, CON); + OMAP_MMC_WRITE(host, CON, w | (1 << 11)); + } else { + w = OMAP_MMC_READ(host, CON); + OMAP_MMC_WRITE(host, CON, w & ~(1 << 11)); + } } } static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios) { - struct mmc_omap_host *host = mmc_priv(mmc); + struct mmc_omap_slot *slot = mmc_priv(mmc); + struct mmc_omap_host *host = slot->host; int func_clk_rate = clk_get_rate(host->fclk); int dsor; @@ -936,7 +1222,8 @@ static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios) if (dsor > 250) dsor = 250; - dsor++; + + slot->fclk_freq = func_clk_rate / dsor; if (ios->bus_width == MMC_BUS_WIDTH_4) dsor |= 1 << 15; @@ -946,28 +1233,40 @@ static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios) static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { - struct mmc_omap_host *host = mmc_priv(mmc); - int dsor; - int i; + struct mmc_omap_slot *slot = mmc_priv(mmc); + struct mmc_omap_host *host = slot->host; + int i, dsor; + int clk_enabled; + + mmc_omap_select_slot(slot, 0); dsor = mmc_omap_calc_divisor(mmc, ios); - host->bus_mode = ios->bus_mode; - host->hw_bus_mode = host->bus_mode; + if (ios->vdd != slot->vdd) + slot->vdd = ios->vdd; + + clk_enabled = 0; switch (ios->power_mode) { case MMC_POWER_OFF: - mmc_omap_power(host, 0); + mmc_omap_set_power(slot, 0, ios->vdd); break; case MMC_POWER_UP: /* Cannot touch dsor yet, just power up MMC */ - mmc_omap_power(host, 1); - return; + mmc_omap_set_power(slot, 1, ios->vdd); + goto exit; case MMC_POWER_ON: + mmc_omap_fclk_enable(host, 1); + clk_enabled = 1; dsor |= 1 << 11; break; } - clk_enable(host->fclk); + if (slot->bus_mode != ios->bus_mode) { + if (slot->pdata->set_bus_mode != NULL) + slot->pdata->set_bus_mode(mmc_dev(mmc), slot->id, + ios->bus_mode); + slot->bus_mode = ios->bus_mode; + } /* On insanely high arm_per frequencies something sometimes * goes somehow out of sync, and the POW bit is not being set, @@ -975,43 +1274,143 @@ static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) * Writing to the CON register twice seems to do the trick. */ for (i = 0; i < 2; i++) OMAP_MMC_WRITE(host, CON, dsor); + slot->saved_con = dsor; if (ios->power_mode == MMC_POWER_ON) { + /* worst case at 400kHz, 80 cycles makes 200 microsecs */ + int usecs = 250; + /* Send clock cycles, poll completion */ OMAP_MMC_WRITE(host, IE, 0); OMAP_MMC_WRITE(host, STAT, 0xffff); OMAP_MMC_WRITE(host, CMD, 1 << 7); - while ((OMAP_MMC_READ(host, STAT) & 1) == 0); + while (usecs > 0 && (OMAP_MMC_READ(host, STAT) & 1) == 0) { + udelay(1); + usecs--; + } OMAP_MMC_WRITE(host, STAT, 1); } - clk_disable(host->fclk); -} - -static int mmc_omap_get_ro(struct mmc_host *mmc) -{ - struct mmc_omap_host *host = mmc_priv(mmc); - return host->wp_pin && omap_get_gpio_datain(host->wp_pin); +exit: + mmc_omap_release_slot(slot, clk_enabled); } static const struct mmc_host_ops mmc_omap_ops = { .request = mmc_omap_request, .set_ios = mmc_omap_set_ios, - .get_ro = mmc_omap_get_ro, }; -static int __init mmc_omap_probe(struct platform_device *pdev) +static int __init mmc_omap_new_slot(struct mmc_omap_host *host, int id) { - struct omap_mmc_conf *minfo = pdev->dev.platform_data; + struct mmc_omap_slot *slot = NULL; struct mmc_host *mmc; + int r; + + mmc = mmc_alloc_host(sizeof(struct mmc_omap_slot), host->dev); + if (mmc == NULL) + return -ENOMEM; + + slot = mmc_priv(mmc); + slot->host = host; + slot->mmc = mmc; + slot->id = id; + slot->pdata = &host->pdata->slots[id]; + + host->slots[id] = slot; + + mmc->caps = MMC_CAP_MULTIWRITE; + if (host->pdata->conf.wire4) + mmc->caps |= MMC_CAP_4_BIT_DATA; + + mmc->ops = &mmc_omap_ops; + mmc->f_min = 400000; + + if (cpu_class_is_omap2()) + mmc->f_max = 48000000; + else + mmc->f_max = 24000000; + if (host->pdata->max_freq) + mmc->f_max = min(host->pdata->max_freq, mmc->f_max); + mmc->ocr_avail = slot->pdata->ocr_mask; + + /* Use scatterlist DMA to reduce per-transfer costs. + * NOTE max_seg_size assumption that small blocks aren't + * normally used (except e.g. for reading SD registers). + */ + mmc->max_phys_segs = 32; + mmc->max_hw_segs = 32; + mmc->max_blk_size = 2048; /* BLEN is 11 bits (+1) */ + mmc->max_blk_count = 2048; /* NBLK is 11 bits (+1) */ + mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; + mmc->max_seg_size = mmc->max_req_size; + + r = mmc_add_host(mmc); + if (r < 0) + goto err_remove_host; + + if (slot->pdata->name != NULL) { + r = device_create_file(&mmc->class_dev, + &dev_attr_slot_name); + if (r < 0) + goto err_remove_host; + } + + if (slot->pdata->get_cover_state != NULL) { + r = device_create_file(&mmc->class_dev, + &dev_attr_cover_switch); + if (r < 0) + goto err_remove_slot_name; + + setup_timer(&slot->cover_timer, mmc_omap_cover_timer, + (unsigned long)slot); + tasklet_init(&slot->cover_tasklet, mmc_omap_cover_handler, + (unsigned long)slot); + tasklet_schedule(&slot->cover_tasklet); + } + + return 0; + +err_remove_slot_name: + if (slot->pdata->name != NULL) + device_remove_file(&mmc->class_dev, &dev_attr_slot_name); +err_remove_host: + mmc_remove_host(mmc); + mmc_free_host(mmc); + return r; +} + +static void mmc_omap_remove_slot(struct mmc_omap_slot *slot) +{ + struct mmc_host *mmc = slot->mmc; + + if (slot->pdata->name != NULL) + device_remove_file(&mmc->class_dev, &dev_attr_slot_name); + if (slot->pdata->get_cover_state != NULL) + device_remove_file(&mmc->class_dev, &dev_attr_cover_switch); + + tasklet_kill(&slot->cover_tasklet); + del_timer_sync(&slot->cover_timer); + flush_scheduled_work(); + + mmc_remove_host(mmc); + mmc_free_host(mmc); +} + +static int __init mmc_omap_probe(struct platform_device *pdev) +{ + struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; struct mmc_omap_host *host = NULL; struct resource *res; - int ret = 0; + int i, ret = 0; int irq; - if (minfo == NULL) { + if (pdata == NULL) { dev_err(&pdev->dev, "platform data missing\n"); return -ENXIO; } + if (pdata->nr_slots == 0) { + dev_err(&pdev->dev, "no slots\n"); + return -ENXIO; + } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); @@ -1019,28 +1418,46 @@ static int __init mmc_omap_probe(struct platform_device *pdev) return -ENXIO; res = request_mem_region(res->start, res->end - res->start + 1, - pdev->name); + pdev->name); if (res == NULL) return -EBUSY; - mmc = mmc_alloc_host(sizeof(struct mmc_omap_host), &pdev->dev); - if (mmc == NULL) { + host = kzalloc(sizeof(struct mmc_omap_host), GFP_KERNEL); + if (host == NULL) { ret = -ENOMEM; goto err_free_mem_region; } - host = mmc_priv(mmc); - host->mmc = mmc; + INIT_WORK(&host->slot_release_work, mmc_omap_slot_release_work); + INIT_WORK(&host->send_stop_work, mmc_omap_send_stop_work); + + INIT_WORK(&host->cmd_abort_work, mmc_omap_abort_command); + setup_timer(&host->cmd_abort_timer, mmc_omap_cmd_timer, + (unsigned long) host); + + spin_lock_init(&host->clk_lock); + setup_timer(&host->clk_timer, mmc_omap_clk_timer, (unsigned long) host); spin_lock_init(&host->dma_lock); - init_timer(&host->dma_timer); - host->dma_timer.function = mmc_omap_dma_timer; - host->dma_timer.data = (unsigned long) host; + setup_timer(&host->dma_timer, mmc_omap_dma_timer, (unsigned long) host); + spin_lock_init(&host->slot_lock); + init_waitqueue_head(&host->slot_wq); + + host->pdata = pdata; + host->dev = &pdev->dev; + platform_set_drvdata(pdev, host); host->id = pdev->id; host->mem_res = res; host->irq = irq; + host->use_dma = 1; + host->dma_ch = -1; + + host->irq = irq; + host->phys_base = host->mem_res->start; + host->virt_base = (void __iomem *) IO_ADDRESS(host->phys_base); + if (cpu_is_omap24xx()) { host->iclk = clk_get(&pdev->dev, "mmc_ick"); if (IS_ERR(host->iclk)) @@ -1058,109 +1475,34 @@ static int __init mmc_omap_probe(struct platform_device *pdev) goto err_free_iclk; } - /* REVISIT: - * Also, use minfo->cover to decide how to manage - * the card detect sensing. - */ - host->power_pin = minfo->power_pin; - host->switch_pin = minfo->switch_pin; - host->wp_pin = minfo->wp_pin; - host->use_dma = 1; - host->dma_ch = -1; - - host->irq = irq; - host->phys_base = host->mem_res->start; - host->virt_base = (void __iomem *) IO_ADDRESS(host->phys_base); - - mmc->ops = &mmc_omap_ops; - mmc->f_min = 400000; - mmc->f_max = 24000000; - mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; - mmc->caps = MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK; - - if (minfo->wire4) - mmc->caps |= MMC_CAP_4_BIT_DATA; - - /* Use scatterlist DMA to reduce per-transfer costs. - * NOTE max_seg_size assumption that small blocks aren't - * normally used (except e.g. for reading SD registers). - */ - mmc->max_phys_segs = 32; - mmc->max_hw_segs = 32; - mmc->max_blk_size = 2048; /* BLEN is 11 bits (+1) */ - mmc->max_blk_count = 2048; /* NBLK is 11 bits (+1) */ - mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; - mmc->max_seg_size = mmc->max_req_size; - - if (host->power_pin >= 0) { - if ((ret = omap_request_gpio(host->power_pin)) != 0) { - dev_err(mmc_dev(host->mmc), - "Unable to get GPIO pin for MMC power\n"); - goto err_free_fclk; - } - omap_set_gpio_direction(host->power_pin, 0); - } - ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host); if (ret) - goto err_free_power_gpio; + goto err_free_fclk; - host->dev = &pdev->dev; - platform_set_drvdata(pdev, host); + if (pdata->init != NULL) { + ret = pdata->init(&pdev->dev); + if (ret < 0) + goto err_free_irq; + } - if (host->switch_pin >= 0) { - INIT_WORK(&host->switch_work, mmc_omap_switch_handler); - init_timer(&host->switch_timer); - host->switch_timer.function = mmc_omap_switch_timer; - host->switch_timer.data = (unsigned long) host; - if (omap_request_gpio(host->switch_pin) != 0) { - dev_warn(mmc_dev(host->mmc), "Unable to get GPIO pin for MMC cover switch\n"); - host->switch_pin = -1; - goto no_switch; - } + host->nr_slots = pdata->nr_slots; + for (i = 0; i < pdata->nr_slots; i++) { + ret = mmc_omap_new_slot(host, i); + if (ret < 0) { + while (--i >= 0) + mmc_omap_remove_slot(host->slots[i]); - omap_set_gpio_direction(host->switch_pin, 1); - ret = request_irq(OMAP_GPIO_IRQ(host->switch_pin), - mmc_omap_switch_irq, IRQF_TRIGGER_RISING, DRIVER_NAME, host); - if (ret) { - dev_warn(mmc_dev(host->mmc), "Unable to get IRQ for MMC cover switch\n"); - omap_free_gpio(host->switch_pin); - host->switch_pin = -1; - goto no_switch; - } - ret = device_create_file(&pdev->dev, &dev_attr_cover_switch); - if (ret == 0) { - ret = device_create_file(&pdev->dev, &dev_attr_enable_poll); - if (ret != 0) - device_remove_file(&pdev->dev, &dev_attr_cover_switch); + goto err_plat_cleanup; } - if (ret) { - dev_warn(mmc_dev(host->mmc), "Unable to create sysfs attributes\n"); - free_irq(OMAP_GPIO_IRQ(host->switch_pin), host); - omap_free_gpio(host->switch_pin); - host->switch_pin = -1; - goto no_switch; - } - if (mmc_omap_enable_poll && mmc_omap_cover_is_open(host)) - schedule_work(&host->switch_work); } - mmc_add_host(mmc); - return 0; -no_switch: - /* FIXME: Free other resources too. */ - if (host) { - if (host->iclk && !IS_ERR(host->iclk)) - clk_put(host->iclk); - if (host->fclk && !IS_ERR(host->fclk)) - clk_put(host->fclk); - mmc_free_host(host->mmc); - } -err_free_power_gpio: - if (host->power_pin >= 0) - omap_free_gpio(host->power_pin); +err_plat_cleanup: + if (pdata->cleanup) + pdata->cleanup(&pdev->dev); +err_free_irq: + free_irq(host->irq, host); err_free_fclk: clk_put(host->fclk); err_free_iclk: @@ -1169,7 +1511,7 @@ err_free_iclk: clk_put(host->iclk); } err_free_mmc_host: - mmc_free_host(host->mmc); + kfree(host); err_free_mem_region: release_mem_region(res->start, res->end - res->start + 1); return ret; @@ -1178,25 +1520,18 @@ err_free_mem_region: static int mmc_omap_remove(struct platform_device *pdev) { struct mmc_omap_host *host = platform_get_drvdata(pdev); + int i; platform_set_drvdata(pdev, NULL); BUG_ON(host == NULL); - mmc_remove_host(host->mmc); - free_irq(host->irq, host); + for (i = 0; i < host->nr_slots; i++) + mmc_omap_remove_slot(host->slots[i]); + + if (host->pdata->cleanup) + host->pdata->cleanup(&pdev->dev); - if (host->power_pin >= 0) - omap_free_gpio(host->power_pin); - if (host->switch_pin >= 0) { - device_remove_file(&pdev->dev, &dev_attr_enable_poll); - device_remove_file(&pdev->dev, &dev_attr_cover_switch); - free_irq(OMAP_GPIO_IRQ(host->switch_pin), host); - omap_free_gpio(host->switch_pin); - host->switch_pin = -1; - del_timer_sync(&host->switch_timer); - flush_scheduled_work(); - } if (host->iclk && !IS_ERR(host->iclk)) clk_put(host->iclk); if (host->fclk && !IS_ERR(host->fclk)) @@ -1205,7 +1540,7 @@ static int mmc_omap_remove(struct platform_device *pdev) release_mem_region(pdev->resource[0].start, pdev->resource[0].end - pdev->resource[0].start + 1); - mmc_free_host(host->mmc); + kfree(host); return 0; } @@ -1213,35 +1548,47 @@ static int mmc_omap_remove(struct platform_device *pdev) #ifdef CONFIG_PM static int mmc_omap_suspend(struct platform_device *pdev, pm_message_t mesg) { - int ret = 0; + int i, ret = 0; struct mmc_omap_host *host = platform_get_drvdata(pdev); - if (host && host->suspended) + if (host == NULL || host->suspended) return 0; - if (host) { - ret = mmc_suspend_host(host->mmc, mesg); - if (ret == 0) - host->suspended = 1; + for (i = 0; i < host->nr_slots; i++) { + struct mmc_omap_slot *slot; + + slot = host->slots[i]; + ret = mmc_suspend_host(slot->mmc, mesg); + if (ret < 0) { + while (--i >= 0) { + slot = host->slots[i]; + mmc_resume_host(slot->mmc); + } + return ret; + } } - return ret; + host->suspended = 1; + return 0; } static int mmc_omap_resume(struct platform_device *pdev) { - int ret = 0; + int i, ret = 0; struct mmc_omap_host *host = platform_get_drvdata(pdev); - if (host && !host->suspended) + if (host == NULL || !host->suspended) return 0; - if (host) { - ret = mmc_resume_host(host->mmc); - if (ret == 0) - host->suspended = 0; - } + for (i = 0; i < host->nr_slots; i++) { + struct mmc_omap_slot *slot; + slot = host->slots[i]; + ret = mmc_resume_host(slot->mmc); + if (ret < 0) + return ret; - return ret; + host->suspended = 0; + } + return 0; } #else #define mmc_omap_suspend NULL diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 4b673aa2dc3c..07c2048b230b 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1,7 +1,7 @@ /* * linux/drivers/mmc/host/sdhci.c - Secure Digital Host Controller Interface driver * - * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. + * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -19,6 +19,8 @@ #include <linux/dma-mapping.h> #include <linux/scatterlist.h> +#include <linux/leds.h> + #include <linux/mmc/host.h> #include "sdhci.h" @@ -30,10 +32,6 @@ static unsigned int debug_quirks = 0; -/* For multi controllers in one platform case */ -static u16 chip_index = 0; -static spinlock_t index_lock; - /* * Different quirks to handle when the hardware deviates from a strict * interpretation of the SDHCI specification. @@ -43,7 +41,7 @@ static spinlock_t index_lock; #define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) /* Controller has bad caps bits, but really supports DMA */ #define SDHCI_QUIRK_FORCE_DMA (1<<1) -/* Controller doesn't like some resets when there is no card inserted. */ +/* Controller doesn't like to be reset when there is no card inserted. */ #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) /* Controller doesn't like clearing the power reg before a change */ #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) @@ -71,13 +69,21 @@ static const struct pci_device_id pci_ids[] __devinitdata = { { .vendor = PCI_VENDOR_ID_RICOH, .device = PCI_DEVICE_ID_RICOH_R5C822, - .subvendor = PCI_ANY_ID, + .subvendor = PCI_VENDOR_ID_SAMSUNG, .subdevice = PCI_ANY_ID, .driver_data = SDHCI_QUIRK_FORCE_DMA | SDHCI_QUIRK_NO_CARD_NO_RESET, }, { + .vendor = PCI_VENDOR_ID_RICOH, + .device = PCI_DEVICE_ID_RICOH_R5C822, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = SDHCI_QUIRK_FORCE_DMA, + }, + + { .vendor = PCI_VENDOR_ID_TI, .device = PCI_DEVICE_ID_TI_XX21_XX11_SD, .subvendor = PCI_ANY_ID, @@ -256,6 +262,24 @@ static void sdhci_deactivate_led(struct sdhci_host *host) writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); } +#ifdef CONFIG_LEDS_CLASS +static void sdhci_led_control(struct led_classdev *led, + enum led_brightness brightness) +{ + struct sdhci_host *host = container_of(led, struct sdhci_host, led); + unsigned long flags; + + spin_lock_irqsave(&host->lock, flags); + + if (brightness == LED_OFF) + sdhci_deactivate_led(host); + else + sdhci_activate_led(host); + + spin_unlock_irqrestore(&host->lock, flags); +} +#endif + /*****************************************************************************\ * * * Core functions * @@ -773,7 +797,9 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) WARN_ON(host->mrq != NULL); +#ifndef CONFIG_LEDS_CLASS sdhci_activate_led(host); +#endif host->mrq = mrq; @@ -965,7 +991,9 @@ static void sdhci_tasklet_finish(unsigned long param) host->cmd = NULL; host->data = NULL; +#ifndef CONFIG_LEDS_CLASS sdhci_deactivate_led(host); +#endif mmiowb(); spin_unlock_irqrestore(&host->lock, flags); @@ -1105,7 +1133,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) goto out; } - DBG("*** %s got interrupt: 0x%08x\n", host->slot_descr, intmask); + DBG("*** %s got interrupt: 0x%08x\n", + mmc_hostname(host->mmc), intmask); if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { writel(intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE), @@ -1235,7 +1264,7 @@ static int sdhci_resume (struct pci_dev *pdev) if (chip->hosts[i]->flags & SDHCI_USE_DMA) pci_set_master(pdev); ret = request_irq(chip->hosts[i]->irq, sdhci_irq, - IRQF_SHARED, chip->hosts[i]->slot_descr, + IRQF_SHARED, mmc_hostname(chip->hosts[i]->mmc), chip->hosts[i]); if (ret) return ret; @@ -1324,9 +1353,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq); - snprintf(host->slot_descr, 20, "sdhc%d:slot%d", chip->index, slot); - - ret = pci_request_region(pdev, host->bar, host->slot_descr); + ret = pci_request_region(pdev, host->bar, mmc_hostname(mmc)); if (ret) goto free; @@ -1343,7 +1370,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) version = (version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT; if (version > 1) { printk(KERN_ERR "%s: Unknown controller version (%d). " - "You may experience problems.\n", host->slot_descr, + "You may experience problems.\n", mmc_hostname(mmc), version); } @@ -1366,13 +1393,13 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) (host->flags & SDHCI_USE_DMA)) { printk(KERN_WARNING "%s: Will use DMA " "mode even though HW doesn't fully " - "claim to support it.\n", host->slot_descr); + "claim to support it.\n", mmc_hostname(mmc)); } if (host->flags & SDHCI_USE_DMA) { if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING "%s: No suitable DMA available. " - "Falling back to PIO.\n", host->slot_descr); + "Falling back to PIO.\n", mmc_hostname(mmc)); host->flags &= ~SDHCI_USE_DMA; } } @@ -1386,7 +1413,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; if (host->max_clk == 0) { printk(KERN_ERR "%s: Hardware doesn't specify base clock " - "frequency.\n", host->slot_descr); + "frequency.\n", mmc_hostname(mmc)); ret = -ENODEV; goto unmap; } @@ -1396,7 +1423,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; if (host->timeout_clk == 0) { printk(KERN_ERR "%s: Hardware doesn't specify timeout clock " - "frequency.\n", host->slot_descr); + "frequency.\n", mmc_hostname(mmc)); ret = -ENODEV; goto unmap; } @@ -1424,7 +1451,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) if (mmc->ocr_avail == 0) { printk(KERN_ERR "%s: Hardware doesn't report any " - "support voltages.\n", host->slot_descr); + "support voltages.\n", mmc_hostname(mmc)); ret = -ENODEV; goto unmap; } @@ -1458,8 +1485,8 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) */ mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT; if (mmc->max_blk_size >= 3) { - printk(KERN_WARNING "%s: Invalid maximum block size, assuming 512\n", - host->slot_descr); + printk(KERN_WARNING "%s: Invalid maximum block size, " + "assuming 512 bytes\n", mmc_hostname(mmc)); mmc->max_blk_size = 512; } else mmc->max_blk_size = 512 << mmc->max_blk_size; @@ -1480,7 +1507,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host); ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, - host->slot_descr, host); + mmc_hostname(mmc), host); if (ret) goto untasklet; @@ -1490,16 +1517,32 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) sdhci_dumpregs(host); #endif +#ifdef CONFIG_LEDS_CLASS + host->led.name = mmc_hostname(mmc); + host->led.brightness = LED_OFF; + host->led.default_trigger = mmc_hostname(mmc); + host->led.brightness_set = sdhci_led_control; + + ret = led_classdev_register(&pdev->dev, &host->led); + if (ret) + goto reset; +#endif + mmiowb(); mmc_add_host(mmc); - printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n", mmc_hostname(mmc), - host->addr, host->irq, + printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n", + mmc_hostname(mmc), host->addr, host->irq, (host->flags & SDHCI_USE_DMA)?"DMA":"PIO"); return 0; +#ifdef CONFIG_LEDS_CLASS +reset: + sdhci_reset(host, SDHCI_RESET_ALL); + free_irq(host->irq, host); +#endif untasklet: tasklet_kill(&host->card_tasklet); tasklet_kill(&host->finish_tasklet); @@ -1527,6 +1570,10 @@ static void sdhci_remove_slot(struct pci_dev *pdev, int slot) mmc_remove_host(mmc); +#ifdef CONFIG_LEDS_CLASS + led_classdev_unregister(&host->led); +#endif + sdhci_reset(host, SDHCI_RESET_ALL); free_irq(host->irq, host); @@ -1589,11 +1636,6 @@ static int __devinit sdhci_probe(struct pci_dev *pdev, chip->num_slots = slots; pci_set_drvdata(pdev, chip); - /* Add for multi controller case */ - spin_lock(&index_lock); - chip->index = chip_index++; - spin_unlock(&index_lock); - for (i = 0;i < slots;i++) { ret = sdhci_probe_slot(pdev, i); if (ret) { @@ -1654,8 +1696,6 @@ static int __init sdhci_drv_init(void) ": Secure Digital Host Controller Interface driver\n"); printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); - spin_lock_init(&index_lock); - return pci_register_driver(&sdhci_driver); } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index d5a38f1b755a..7fb02e177a3d 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -1,7 +1,7 @@ /* * linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver * - * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. + * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -168,6 +168,10 @@ struct sdhci_host { struct sdhci_chip *chip; struct mmc_host *mmc; /* MMC structure */ +#ifdef CONFIG_LEDS_CLASS + struct led_classdev led; /* LED control */ +#endif + spinlock_t lock; /* Mutex */ int flags; /* Host attributes */ @@ -190,8 +194,6 @@ struct sdhci_host { int offset; /* Offset into current sg */ int remain; /* Bytes left in current */ - char slot_descr[20]; /* Name for reservations */ - int irq; /* Device IRQ */ int bar; /* PCI BAR index */ unsigned long addr; /* Bus address */ @@ -208,7 +210,6 @@ struct sdhci_chip { unsigned long quirks; - int index; /* Index for chip0, chip1 ...*/ int num_slots; /* Slots on controller */ struct sdhci_host *hosts[0]; /* Pointers to hosts */ }; |