Implement suspend and resume routines for mpc52xx ata driver. Tested on Lite5200b with deep-sleep and low-power (not yet in-tree) modes.
Signed-off-by: Domen Puncer <[EMAIL PROTECTED]> --- If anyone cares, I attached ATA_DEBUG messages at the end of patch. Should it take almost 5 seconds? drivers/ata/pata_mpc52xx.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) Index: work-powerpc.git/drivers/ata/pata_mpc52xx.c =================================================================== --- work-powerpc.git.orig/drivers/ata/pata_mpc52xx.c +++ work-powerpc.git/drivers/ata/pata_mpc52xx.c @@ -467,13 +467,27 @@ mpc52xx_ata_remove(struct of_device *op) static int mpc52xx_ata_suspend(struct of_device *op, pm_message_t state) { - return 0; /* FIXME : What to do here ? */ + struct ata_host *host = dev_get_drvdata(&op->dev); + + return ata_host_suspend(host, state); } static int mpc52xx_ata_resume(struct of_device *op) { - return 0; /* FIXME : What to do here ? */ + struct ata_host *host = dev_get_drvdata(&op->dev); + struct mpc52xx_ata_priv *priv = host->private_data; + int rv; + + rv = mpc52xx_ata_hw_init(priv); + if (rv) { + printk(KERN_ERR DRV_NAME ": Error during HW init\n"); + return rv; + } + + ata_host_resume(host); + + return 0; } #endif [ 1039.434045] Stopping tasks ... done. [ 1039.438193] Suspending console(s) [ 1039.441662] sd 0:0:0:0: [sda] Synchronizing SCSI cache [ 1039.441749] ata_scsi_dump_cdb: CDB (1:0,0,0) 35 00 00 00 00 00 00 00 00 [ 1039.441817] ata_exec_command: ata1: cmd 0xE7 [ 1039.442191] ata_hsm_move: ata1: protocol 1 task_state 3 (dev_stat 0x50) [ 1039.442208] ata_hsm_move: ata1: dev 0 command complete, drv_stat 0x50 [ 1039.442310] sd 0:0:0:0: [sda] Stopping disk [ 1039.442378] ata_scsi_dump_cdb: CDB (1:0,0,0) 1b 00 00 00 00 00 00 00 00 [ 1039.442442] ata_exec_command: ata1: cmd 0xE0 [ 1039.442738] ata_hsm_move: ata1: protocol 1 task_state 3 (dev_stat 0x50) [ 1039.442754] ata_hsm_move: ata1: dev 0 command complete, drv_stat 0x50 [ 1039.442881] usb_endpoint usbdev1.1_ep81: PM: suspend 0->2, parent 1-0:1.0 already 2 [ 1039.442903] hub 1-0:1.0: PM: suspend 2->2, parent usb1 already 2 [ 1039.442919] usb_endpoint usbdev1.1_ep00: PM: suspend 0->2, parent usb1 already 2 [ 1039.444022] ata_port_schedule_eh: port EH scheduled [ 1039.444056] ata_scsi_error: ENTER [ 1039.444065] ata_port_flush_task: ENTER [ 1039.444074] ata_port_flush_task: flush #1 [ 1039.444087] ata1: ata_port_flush_task: flush #2 [ 1039.444097] ata1: ata_port_flush_task: EXIT [ 1039.444116] ata_eh_autopsy: ENTER [ 1039.444133] ata_eh_autopsy: EXIT [ 1039.444141] ata_eh_recover: ENTER [ 1039.444151] ata_eh_revalidate_and_attach: ENTER [ 1039.444162] ata_eh_recover: EXIT, rc=0 [ 1039.444179] __ata_port_freeze: ata1 port frozen [ 1039.444198] ata_scsi_error: EXIT [ 1039.447207] ata_port_schedule_eh: port EH scheduled [ 1039.447270] eth0: Phy @ 0x0, type LXT971 (0x001378e2) [ 1039.448257] usb_endpoint usbdev1.1_ep00: PM: resume from 0, parent usb1 still 2 [ 1039.448276] usb_endpoint usbdev1.1_ep81: PM: resume from 0, parent 1-0:1.0 still 2 [ 1039.448306] sd 0:0:0:0: [sda] Starting disk [ 1039.448384] ata_scsi_error: ENTER [ 1039.448398] ata_port_flush_task: ENTER [ 1039.448407] ata_port_flush_task: flush #1 [ 1039.448420] ata1: ata_port_flush_task: flush #2 [ 1039.448430] ata1: ata_port_flush_task: EXIT [ 1039.448451] ata_eh_autopsy: ENTER [ 1039.448467] ata_eh_recover: ENTER [ 1039.448481] __ata_port_freeze: ata1 port frozen [ 1039.956600] ata_std_softreset: ENTER [ 1039.956648] ata_std_softreset: about to softreset, devmask=3 [ 1039.956661] ata_bus_softreset: ata1: bus reset via SRST [ 1040.107612] ata_dev_classify: found ATA device by sig [ 1040.107643] ata_dev_classify: found ATA device by sig [ 1040.107656] ata_std_softreset: EXIT, classes[0]=1 [1]=5 [ 1040.107667] ata_std_postreset: ENTER [ 1040.107680] ata_std_postreset: EXIT [ 1040.107708] ata_eh_thaw_port: ata1 port thawed [ 1040.107717] ata_eh_revalidate_and_attach: ENTER [ 1040.107732] ata1.00: ata_dev_read_id: ENTER [ 1040.107833] ata_exec_command: ata1: cmd 0xEC [ 1040.110597] ata_hsm_move: ata1: protocol 2 task_state 2 (dev_stat 0x58) [ 1040.110616] ata_pio_sector: data read [ 1040.110852] ata_hsm_move: ata1: protocol 2 task_state 3 (dev_stat 0x50) [ 1040.110867] ata_hsm_move: ata1: dev 0 command complete, drv_stat 0x50 [ 1040.110920] ata_port_flush_task: ENTER [ 1040.110929] ata_port_flush_task: flush #1 [ 1040.110941] ata1: ata_port_flush_task: flush #2 [ 1040.110952] ata1: ata_port_flush_task: EXIT [ 1040.111032] ata_dev_set_xfermode: set features - xfer mode [ 1040.111102] ata_exec_command: ata1: cmd 0xEF [ 1040.111263] ata_hsm_move: ata1: protocol 1 task_state 3 (dev_stat 0x50) [ 1040.111281] ata_hsm_move: ata1: dev 0 command complete, drv_stat 0x50 [ 1040.111329] ata_port_flush_task: ENTER [ 1040.111339] ata_port_flush_task: flush #1 [ 1040.111351] ata1: ata_port_flush_task: flush #2 [ 1040.111361] ata1: ata_port_flush_task: EXIT [ 1040.111373] ata_dev_set_xfermode: EXIT, err_mask=0 [ 1040.111385] ata1.00: ata_dev_read_id: ENTER [ 1040.111474] ata_exec_command: ata1: cmd 0xEC [ 1040.114596] ata_hsm_move: ata1: protocol 2 task_state 2 (dev_stat 0x58) [ 1040.114615] ata_pio_sector: data read [ 1040.114713] ata_hsm_move: ata1: protocol 2 task_state 3 (dev_stat 0x50) [ 1040.114727] ata_hsm_move: ata1: dev 0 command complete, drv_stat 0x50 [ 1040.114775] ata_port_flush_task: ENTER [ 1040.114784] ata_port_flush_task: flush #1 [ 1040.114796] ata1: ata_port_flush_task: flush #2 [ 1040.114806] ata1: ata_port_flush_task: EXIT [ 1040.114861] ata_dev_set_mode: xfer_shift=0, xfer_mode=0xc [ 1040.114873] ata1.00: configured for PIO4 [ 1040.114883] ata_eh_recover: EXIT, rc=0 [ 1040.114907] ata_scsi_error: EXIT [ 1040.114957] ata_scsi_dump_cdb: CDB (1:0,0,0) 00 00 00 00 00 00 00 00 00 [ 1040.115051] ata_scsi_dump_cdb: CDB (1:0,0,0) 1b 00 00 00 01 00 00 00 00 [ 1040.115118] ata_exec_command: ata1: cmd 0x40 [ 1043.605018] ata_hsm_move: ata1: protocol 1 task_state 3 (dev_stat 0x50) [ 1043.605039] ata_hsm_move: ata1: dev 0 command complete, drv_stat 0x50 [ 1043.605128] ata_scsi_dump_cdb: CDB (1:0,0,0) 25 00 00 00 00 00 00 00 00 [ 1043.990208] Restarting tasks ... done. [ 1043.995913] sd 0:0:0:0: [sda] 8404830 512-byte hardware sectors (4303 MB) [ 1044.004169] ata_scsi_dump_cdb: CDB (1:0,0,0) 5a 00 3f 00 00 00 00 00 08 [ 1044.011083] sd 0:0:0:0: [sda] Write Protect is off [ 1044.016047] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 [ 1044.016134] ata_scsi_dump_cdb: CDB (1:0,0,0) 5a 00 08 00 00 00 00 00 08 [ 1044.023085] ata_scsi_dump_cdb: CDB (1:0,0,0) 5a 00 08 00 00 00 00 00 24 [ 1044.029978] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html