Realtek cr: Add autosuspend function.
The autosuspend function can be disabled by unchecking the Macro CONFIG_REALTEK_AUTOPM in kernel config file, by default, this macro is turned on. Signed-off-by: edwin_rong <edwin_rong@realsil.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
edwin_rong
Greg Kroah-Hartman
parent
b6507df482
commit
e931830bb8
2 changed files with 369 additions and 12 deletions
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@ -40,6 +40,10 @@ config USB_STORAGE_REALTEK
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If this driver is compiled as a module, it will be named ums-realtek.
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config REALTEK_AUTOPM
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bool "Realtek Card Reader autosuspend support"
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depends on USB_STORAGE_REALTEK && CONFIG_PM_RUNTIME
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default y
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config USB_STORAGE_DATAFAB
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tristate "Datafab Compact Flash Reader support"
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@ -24,7 +24,6 @@
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#include <linux/blkdev.h>
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#include <linux/kthread.h>
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#include <linux/sched.h>
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#include <linux/workqueue.h>
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#include <linux/kernel.h>
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#include <linux/version.h>
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@ -51,6 +50,35 @@ static int auto_delink_en = 1;
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module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
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#ifdef CONFIG_REALTEK_AUTOPM
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static int ss_en = 1;
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module_param(ss_en, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ss_en, "enable selective suspend");
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static int ss_delay = 50;
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module_param(ss_delay, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ss_delay,
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"seconds to delay before entering selective suspend");
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enum RTS51X_STAT {
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RTS51X_STAT_INIT,
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RTS51X_STAT_IDLE,
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RTS51X_STAT_RUN,
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RTS51X_STAT_SS
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};
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#define POLLING_INTERVAL 50
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#define rts51x_set_stat(chip, stat) \
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((chip)->state = (enum RTS51X_STAT)(stat))
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#define rts51x_get_stat(chip) ((chip)->state)
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#define SET_LUN_READY(chip, lun) ((chip)->lun_ready |= ((u8)1 << (lun)))
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#define CLR_LUN_READY(chip, lun) ((chip)->lun_ready &= ~((u8)1 << (lun)))
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#define TST_LUN_READY(chip, lun) ((chip)->lun_ready & ((u8)1 << (lun)))
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#endif
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struct rts51x_status {
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u16 vid;
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u16 pid;
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@ -78,6 +106,17 @@ struct rts51x_chip {
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int status_len;
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u32 flag;
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#ifdef CONFIG_REALTEK_AUTOPM
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struct us_data *us;
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struct timer_list rts51x_suspend_timer;
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unsigned long timer_expires;
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int pwr_state;
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u8 lun_ready;
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enum RTS51X_STAT state;
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int support_auto_delink;
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#endif
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/* used to back up the protocal choosen in probe1 phase */
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proto_cmnd proto_handler_backup;
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};
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/* flag definition */
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@ -97,9 +136,14 @@ struct rts51x_chip {
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#define RTS51X_GET_VID(chip) ((chip)->vendor_id)
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#define RTS51X_GET_PID(chip) ((chip)->product_id)
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#define VENDOR_ID(chip) ((chip)->status[0].vid)
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#define PRODUCT_ID(chip) ((chip)->status[0].pid)
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#define FW_VERSION(chip) ((chip)->status[0].fw_ver)
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#define STATUS_LEN(chip) ((chip)->status_len)
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#define STATUS_SUCCESS 0
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#define STATUS_FAIL 1
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/* Check card reader function */
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#define SUPPORT_DETAILED_TYPE1(chip) \
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CHK_BIT((chip)->status[0].function[0], 1)
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@ -423,6 +467,8 @@ static int config_autodelink_after_power_on(struct us_data *us)
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int retval;
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u8 value;
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US_DEBUGP("%s: <---\n", __func__);
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if (!CHK_AUTO_DELINK(chip))
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return 0;
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@ -478,6 +524,8 @@ static int config_autodelink_after_power_on(struct us_data *us)
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}
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}
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US_DEBUGP("%s: --->\n", __func__);
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return 0;
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}
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@ -487,6 +535,8 @@ static int config_autodelink_before_power_down(struct us_data *us)
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int retval;
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u8 value;
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US_DEBUGP("%s: <---\n", __func__);
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if (!CHK_AUTO_DELINK(chip))
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return 0;
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@ -547,25 +597,323 @@ static int config_autodelink_before_power_down(struct us_data *us)
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}
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}
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US_DEBUGP("%s: --->\n", __func__);
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return 0;
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}
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static void fw5895_init(struct us_data *us)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
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int retval;
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u8 val;
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US_DEBUGP("%s: <---\n", __func__);
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if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
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US_DEBUGP("Not the specified device, return immediately!\n");
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} else {
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retval = rts51x_read_mem(us, 0xFD6F, &val, 1);
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if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) {
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val = 0x1F;
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retval = rts51x_write_mem(us, 0xFD70, &val, 1);
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if (retval != STATUS_SUCCESS)
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US_DEBUGP("Write memory fail\n");
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} else {
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US_DEBUGP("Read memory fail, OR (val & 0x1F) != 0\n");
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}
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}
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US_DEBUGP("%s: --->\n", __func__);
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}
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#ifdef CONFIG_REALTEK_AUTOPM
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static void fw5895_set_mmc_wp(struct us_data *us)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
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int retval;
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u8 buf[13];
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US_DEBUGP("%s: <---\n", __func__);
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if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
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US_DEBUGP("Not the specified device, return immediately!\n");
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} else {
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retval = rts51x_read_mem(us, 0xFD6F, buf, 1);
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if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) {
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/* SD Exist and SD WP */
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retval = rts51x_read_mem(us, 0xD04E, buf, 1);
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if (retval == STATUS_SUCCESS) {
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buf[0] |= 0x04;
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retval = rts51x_write_mem(us, 0xFD70, buf, 1);
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if (retval != STATUS_SUCCESS)
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US_DEBUGP("Write memory fail\n");
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} else {
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US_DEBUGP("Read memory fail\n");
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}
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} else {
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US_DEBUGP("Read memory fail, OR (buf[0]&0x24)!=0x24\n");
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}
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}
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US_DEBUGP("%s: --->\n", __func__);
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}
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static void rts51x_modi_suspend_timer(struct rts51x_chip *chip)
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{
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US_DEBUGP("%s: <---, state:%d\n", __func__, rts51x_get_stat(chip));
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chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay);
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mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires);
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US_DEBUGP("%s: --->\n", __func__);
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}
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static void rts51x_suspend_timer_fn(unsigned long data)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)data;
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struct us_data *us = chip->us;
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US_DEBUGP("%s: <---\n", __func__);
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switch (rts51x_get_stat(chip)) {
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case RTS51X_STAT_INIT:
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case RTS51X_STAT_RUN:
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rts51x_modi_suspend_timer(chip);
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break;
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case RTS51X_STAT_IDLE:
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case RTS51X_STAT_SS:
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US_DEBUGP("%s: RTS51X_STAT_SS, intf->pm_usage_cnt:%d,"
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"power.usage:%d\n", __func__,
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atomic_read(&us->pusb_intf->pm_usage_cnt),
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atomic_read(&us->pusb_intf->dev.power.usage_count));
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if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) {
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US_DEBUGP("%s: Ready to enter SS state.\n",
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__func__);
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rts51x_set_stat(chip, RTS51X_STAT_SS);
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/* ignore mass storage interface's children */
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pm_suspend_ignore_children(&us->pusb_intf->dev, true);
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usb_autopm_put_interface(us->pusb_intf);
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US_DEBUGP("%s: RTS51X_STAT_SS 01,"
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"intf->pm_usage_cnt:%d, power.usage:%d\n",
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__func__,
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atomic_read(&us->pusb_intf->pm_usage_cnt),
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atomic_read(
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&us->pusb_intf->dev.power.usage_count));
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}
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break;
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default:
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US_DEBUGP("%s: Unknonwn state !!!\n", __func__);
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break;
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}
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US_DEBUGP("%s: --->\n", __func__);
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}
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static inline int working_scsi(struct scsi_cmnd *srb)
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{
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if ((srb->cmnd[0] == TEST_UNIT_READY) ||
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(srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) {
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return 0;
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}
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return 1;
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}
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void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
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static int card_first_show = 1;
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static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0,
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10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0
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};
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static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0,
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10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0
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};
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int ret;
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US_DEBUGP("%s: <---\n", __func__);
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if (working_scsi(srb)) {
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US_DEBUGP("%s: working scsi, intf->pm_usage_cnt:%d,"
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"power.usage:%d\n", __func__,
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atomic_read(&us->pusb_intf->pm_usage_cnt),
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atomic_read(&us->pusb_intf->dev.power.usage_count));
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if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) {
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ret = usb_autopm_get_interface(us->pusb_intf);
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US_DEBUGP("%s: working scsi, ret=%d\n", __func__, ret);
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}
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if (rts51x_get_stat(chip) != RTS51X_STAT_RUN)
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rts51x_set_stat(chip, RTS51X_STAT_RUN);
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chip->proto_handler_backup(srb, us);
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} else {
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if (rts51x_get_stat(chip) == RTS51X_STAT_SS) {
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US_DEBUGP("%s: NOT working scsi\n", __func__);
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if ((srb->cmnd[0] == TEST_UNIT_READY) &&
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(chip->pwr_state == US_SUSPEND)) {
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if (TST_LUN_READY(chip, srb->device->lun)) {
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srb->result = SAM_STAT_GOOD;
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} else {
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srb->result = SAM_STAT_CHECK_CONDITION;
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memcpy(srb->sense_buffer,
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media_not_present,
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US_SENSE_SIZE);
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}
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US_DEBUGP("%s: TEST_UNIT_READY--->\n",
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__func__);
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goto out;
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}
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if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
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int prevent = srb->cmnd[4] & 0x1;
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if (prevent) {
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srb->result = SAM_STAT_CHECK_CONDITION;
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memcpy(srb->sense_buffer,
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invalid_cmd_field,
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US_SENSE_SIZE);
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} else {
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srb->result = SAM_STAT_GOOD;
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}
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US_DEBUGP("%s: ALLOW_MEDIUM_REMOVAL--->\n",
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__func__);
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goto out;
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}
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} else {
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US_DEBUGP("%s: NOT working scsi, not SS\n", __func__);
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chip->proto_handler_backup(srb, us);
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/* Check wether card is plugged in */
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if (srb->cmnd[0] == TEST_UNIT_READY) {
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if (srb->result == SAM_STAT_GOOD) {
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SET_LUN_READY(chip, srb->device->lun);
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if (card_first_show) {
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card_first_show = 0;
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fw5895_set_mmc_wp(us);
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}
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} else {
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CLR_LUN_READY(chip, srb->device->lun);
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card_first_show = 1;
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}
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}
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if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE)
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rts51x_set_stat(chip, RTS51X_STAT_IDLE);
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}
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}
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out:
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US_DEBUGP("%s: state:%d\n", __func__, rts51x_get_stat(chip));
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if (rts51x_get_stat(chip) == RTS51X_STAT_RUN)
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rts51x_modi_suspend_timer(chip);
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US_DEBUGP("%s: --->\n", __func__);
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}
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static int realtek_cr_autosuspend_setup(struct us_data *us)
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{
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struct rts51x_chip *chip;
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struct rts51x_status *status = NULL;
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u8 buf[16];
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int retval;
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chip = (struct rts51x_chip *)us->extra;
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chip->support_auto_delink = 0;
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chip->pwr_state = US_RESUME;
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chip->lun_ready = 0;
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rts51x_set_stat(chip, RTS51X_STAT_INIT);
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retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len));
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if (retval != STATUS_SUCCESS) {
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US_DEBUGP("Read status fail\n");
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return -EIO;
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}
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status = chip->status;
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status->vid = ((u16) buf[0] << 8) | buf[1];
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status->pid = ((u16) buf[2] << 8) | buf[3];
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status->cur_lun = buf[4];
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status->card_type = buf[5];
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status->total_lun = buf[6];
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status->fw_ver = ((u16) buf[7] << 8) | buf[8];
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status->phy_exist = buf[9];
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status->multi_flag = buf[10];
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status->multi_card = buf[11];
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status->log_exist = buf[12];
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if (chip->status_len == 16) {
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status->detailed_type.detailed_type1 = buf[13];
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status->function[0] = buf[14];
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status->function[1] = buf[15];
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}
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/* back up the proto_handler in us->extra */
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chip = (struct rts51x_chip *)(us->extra);
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chip->proto_handler_backup = us->proto_handler;
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/* Set the autosuspend_delay to 0 */
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pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0);
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/* override us->proto_handler setted in get_protocol() */
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us->proto_handler = rts51x_invoke_transport;
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chip->timer_expires = 0;
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setup_timer(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn,
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(unsigned long)chip);
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fw5895_init(us);
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/* enable autosuspend funciton of the usb device */
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usb_enable_autosuspend(us->pusb_dev);
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return 0;
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}
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#endif
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static void realtek_cr_destructor(void *extra)
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{
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struct rts51x_chip *chip = (struct rts51x_chip *)extra;
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US_DEBUGP("%s: <---\n", __func__);
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if (!chip)
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return;
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#ifdef CONFIG_REALTEK_AUTOPM
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if (ss_en) {
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del_timer(&chip->rts51x_suspend_timer);
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chip->timer_expires = 0;
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}
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#endif
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kfree(chip->status);
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}
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#ifdef CONFIG_PM
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static void realtek_pm_hook(struct us_data *us, int pm_state)
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int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message)
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{
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if (pm_state == US_SUSPEND)
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(void)config_autodelink_before_power_down(us);
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struct us_data *us = usb_get_intfdata(iface);
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US_DEBUGP("%s: <---\n", __func__);
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/* wait until no command is running */
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mutex_lock(&us->dev_mutex);
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config_autodelink_before_power_down(us);
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mutex_unlock(&us->dev_mutex);
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US_DEBUGP("%s: --->\n", __func__);
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return 0;
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}
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static int realtek_cr_resume(struct usb_interface *iface)
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{
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struct us_data *us = usb_get_intfdata(iface);
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US_DEBUGP("%s: <---\n", __func__);
|
||||
|
||||
fw5895_init(us);
|
||||
config_autodelink_after_power_on(us);
|
||||
|
||||
US_DEBUGP("%s: --->\n", __func__);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define realtek_cr_suspend NULL
|
||||
#define realtek_cr_resume NULL
|
||||
#endif
|
||||
|
||||
static int init_realtek_cr(struct us_data *us)
|
||||
|
|
@ -579,10 +927,6 @@ static int init_realtek_cr(struct us_data *us)
|
|||
|
||||
us->extra = chip;
|
||||
us->extra_destructor = realtek_cr_destructor;
|
||||
#ifdef CONFIG_PM
|
||||
us->suspend_resume_hook = realtek_pm_hook;
|
||||
#endif
|
||||
|
||||
us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
|
||||
|
||||
US_DEBUGP("chip->max_lun = %d\n", chip->max_lun);
|
||||
|
|
@ -605,6 +949,12 @@ static int init_realtek_cr(struct us_data *us)
|
|||
if (SUPPORT_AUTO_DELINK(chip))
|
||||
SET_AUTO_DELINK(chip);
|
||||
}
|
||||
#ifdef CONFIG_REALTEK_AUTOPM
|
||||
if (ss_en) {
|
||||
chip->us = us;
|
||||
realtek_cr_autosuspend_setup(us);
|
||||
}
|
||||
#endif
|
||||
|
||||
US_DEBUGP("chip->flag = 0x%x\n", chip->flag);
|
||||
|
||||
|
|
@ -645,13 +995,16 @@ static struct usb_driver realtek_cr_driver = {
|
|||
.name = "ums-realtek",
|
||||
.probe = realtek_cr_probe,
|
||||
.disconnect = usb_stor_disconnect,
|
||||
.suspend = usb_stor_suspend,
|
||||
.resume = usb_stor_resume,
|
||||
/* .suspend = usb_stor_suspend, */
|
||||
/* .resume = usb_stor_resume, */
|
||||
.reset_resume = usb_stor_reset_resume,
|
||||
.suspend = realtek_cr_suspend,
|
||||
.resume = realtek_cr_resume,
|
||||
.pre_reset = usb_stor_pre_reset,
|
||||
.post_reset = usb_stor_post_reset,
|
||||
.id_table = realtek_cr_ids,
|
||||
.soft_unbind = 1,
|
||||
.supports_autosuspend = 1,
|
||||
};
|
||||
|
||||
static int __init realtek_cr_init(void)
|
||||
|
|
|
|||
Loading…
Reference in a new issue