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linux/drivers/ata
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Aaron Lu 3dc67440d9 libata: check zero power ready status for ZPODD 
Per the Mount Fuji spec, the ODD is considered zero power ready when:
  - For slot type ODD, no media inside;
  - For tray type ODD, no media inside and tray closed.

The information can be retrieved by either the returned information of
command GET_EVENT_STATUS_NOTIFICATION(the command is used to poll for
media event) or sense code.

The information provided by the media status byte is not accurate, it
is possible that after a new disc is just inserted, the status byte
still returns media not present. So this information can not be used as
the deciding factor, we use sense code to decide if zpready status is
true.

When we first sensed the ODD in the zero power ready state, the
zp_sampled will be set and timestamp will be recoreded. And after ODD
stayed in this state for some pre-defined period, the ODD is considered
as power off ready and the zp_ready flag will be set. The zp_ready flag
serves as the deciding factor other code will use to see if power off is
OK for the ODD.

The Mount Fuji spec suggests a delay should be used here, to avoid the
case user ejects the ODD and then instantly inserts a new one again, so
that we can avoid a power transition. And some ODDs may be slow to place
its head to the home position after disc is ejected, so a delay here is
generally a good idea. And the delay time can be changed via the module
param zpodd_poweroff_delay.

The zero power ready status check is performed in the ata port's runtime
suspend code path, when port is not frozen yet, as we need to issue some
IOs to the ODD.

Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
 		2013-01-21 15:41:34 -05:00
..
Kconfig libata: identify and init ZPODD devices 2013-01-21 15:40:35 -05:00
Makefile libata: identify and init ZPODD devices 2013-01-21 15:40:35 -05:00
acard-ahci.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
ahci.c [libata] ahci: Add support for Enmotus Bobcat device. 2013-01-14 13:21:12 -05:00
ahci.h ata/ahci_platform: Add clock framework support 2012-09-13 01:10:18 -04:00
ahci_platform.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
ata_generic.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
ata_piix.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
libahci.c [libata] replace sata_settings with devslp_timing 2013-01-14 13:29:15 -05:00
libata-acpi.c libata: move acpi notification code to zpodd 2013-01-21 15:41:12 -05:00
libata-core.c libata: identify and init ZPODD devices 2013-01-21 15:40:35 -05:00
libata-eh.c libata: check zero power ready status for ZPODD 2013-01-21 15:41:34 -05:00
libata-pmp.c libata: migrate ACPI code over to new bindings 2012-06-29 11:38:11 -04:00
libata-scsi.c libata: identify and init ZPODD devices 2013-01-21 15:40:35 -05:00
libata-sff.c ata: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:16 +08:00
libata-transport.c libata: export host controller number thru /sys 2013-01-14 13:31:21 -05:00
libata-transport.h [libata] Add ATA transport class 2010-10-21 20:21:03 -04:00
libata-zpodd.c libata: check zero power ready status for ZPODD 2013-01-21 15:41:34 -05:00
libata.h libata: check zero power ready status for ZPODD 2013-01-21 15:41:34 -05:00
pata_acpi.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_ali.c pata_ali: fix "Satelite" typo 2011-10-14 13:10:42 -04:00
pata_amd.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_arasan_cf.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_artop.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_at32.c libata: remove ATA_FLAG_MMIO 2011-03-02 02:36:46 -05:00
pata_at91.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_atiixp.c pata_atiixp: override cable detection on MSI E350DM-E33 2012-08-17 13:26:51 -04:00
pata_atp867x.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_bf54x.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_cmd64x.c ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>( 2012-11-28 12:40:15 -05:00
pata_cmd640.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_cs5520.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_cs5530.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_cs5535.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_cs5536.c pata_cs5536: add quirk for broken udma 2012-11-28 12:38:41 -05:00
pata_cypress.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_efar.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_ep93xx.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_hpt3x2n.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_hpt3x3.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_hpt37x.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_hpt366.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_icside.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_imx.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_isapnp.c [libata] Improve timeout handling 2009-03-24 22:52:39 -04:00
pata_it821x.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_it8213.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_ixp4xx_cf.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_jmicron.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_legacy.c pata_legacy: correctly mask recovery field for HT6560B 2012-03-13 12:43:13 -04:00
pata_macio.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_marvell.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_mpc52xx.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_mpiix.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_netcell.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_ninja32.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_ns87410.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_ns87415.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_octeon_cf.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_of_platform.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_oldpiix.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_opti.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_optidma.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_palmld.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_pcmcia.c drivers/ata/pata_pcmcia.c: adjust suspicious bit operation 2012-07-25 15:06:20 -04:00
pata_pdc202xx_old.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_pdc2027x.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_piccolo.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_platform.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_pxa.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_radisys.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_rb532_cf.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_rdc.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_rz1000.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_samsung_cf.c pata_samsung_cf: Use devm_clk_get() 2013-01-14 13:31:19 -05:00
pata_sc1200.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_scc.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_sch.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_serverworks.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_sil680.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_sis.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_sl82c105.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_triflex.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pata_via.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
pdc_adma.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
sata_dwc_460ex.c sata_dwc_460ex: remove file exec bit (chmod 0755 -> 0644) 2012-12-14 09:43:39 -05:00
sata_fsl.c sata_fsl: add workaround for data length mismatch on freescale V2 controller 2012-09-13 01:09:19 -04:00
sata_highbank.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
sata_inic162x.c sata_inic162x: remove unused variable in inic_scr_read() 2012-11-28 12:39:09 -05:00
sata_mv.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
sata_nv.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
sata_promise.c sata_promise: fix hardreset lockdep error 2012-11-28 12:37:56 -05:00
sata_promise.h libata annotations and fixes 2008-01-23 05:24:15 -05:00
sata_qstor.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
sata_sil.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
sata_sil24.c sata_sil24: remove unused variable from sata_sil24.c 2012-11-28 12:39:20 -05:00
sata_sis.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
sata_svw.c sata_svw: check DMA start bit before reset 2012-11-15 23:54:41 -05:00
sata_sx4.c sata_sx4: pdc20621_{ata|host}_sg() do not need 'tf' parameter 2012-11-28 12:39:44 -05:00
sata_uli.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
sata_via.c ata: use module_pci_driver 2012-07-25 15:12:11 -04:00
sata_vsc.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
sis.h
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