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path: root/drivers/net/wireless/wl12xx/spi.c
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* Merge branch 'master' of ↵John W. Linville2011-07-08
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
| * net: wl12xx: remove unnecessary printsFelipe Balbi2011-06-27
| | | | | | | | | | | | | | | | Those have little value. Remove those to make the driver less noisy. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* | net: remove interrupt.h inclusion from netdevice.hAlexey Dobriyan2011-06-07
|/ | | | | | | | * remove interrupt.g inclusion from netdevice.h -- not needed * fixup fallout, add interrupt.h and hardirq.h back where needed. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* wl12xx: Handle platforms without level trigger interruptsIdo Yariv2011-04-19
| | | | | | | | | | | | | | | | | | | | Some platforms are incapable of triggering on level interrupts. Add a platform quirks member in the platform data structure, as well as an edge interrupt quirk which can be set on such platforms. When the interrupt is requested with IRQF_TRIGGER_RISING, IRQF_ONESHOT cannot be used, as we might miss interrupts that occur after the FW status is cleared and before the threaded interrupt handler exits. Moreover, when IRQF_ONESHOT is not set, iterating more than once in the threaded interrupt handler introduces a few race conditions between this handler and the hardirq handler. Currently this is worked around by limiting the loop to one iteration only. This workaround has an impact on performance. To remove to this restriction, the race conditions will need to be addressed. Signed-off-by: Ido Yariv <ido@wizery.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: 1281/1283 support - Use different FW file for AP mode wl127x/wl128x ↵Arik Nemtsov2011-04-19
| | | | | | | | | | | chips Choose a different FW for AP-mode wl127x and wl128x chips, base on chip ID at boot time. Signed-off-by: Arik Nemtsov <arik@wizery.com> Reviewed-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: 1281/1283 support - New boot sequenceShahar Levi2011-04-19
| | | | | | | | | | | | | | | | | | Boot sequence support FREF clock and TCXO clock. WL128x has two clocks input - TCXO and FREF. TCXO is the main clock of the device, while FREF is used to sync between the GPS and the cellular modem. Auto-detection checks where TCXO is 32.736MHz or 16.368MHz, in that case the FREF will be used as the WLAN/BT main clock. [Use clock enumeration as defined in linux/wl12xx.h; remove unnecessary else block in wl128x_switch_fref; remove unnecessary change in main.c; remove some unnecessary debug prints and comments; fix potential use of uninitialized value (pll_config) -- Luca] Signed-off-by: Shahar Levi <shahar_levi@ti.com> Reviewed-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: 1281/1283 support - add block size handling for sdio and spiLuciano Coelho2011-04-19
| | | | | | | | Add the the set_block_size op in the SDIO and in the SPI modules. Since it is only used with SDIO, just explicitly set the op to NULL in spi.c Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: 1281/1283 support - Add DefinitionsShahar Levi2011-04-19
| | | | | | | | | | | | | | | | | | Definitions to support wl128x: - New FW file name - Chip ID - New PLL Configuration Algorithm macros that will be used at wl128x boot stage - Rename NVS macro name: wl127x and wl128x are using the same NVS file name. However, the ini parameters between them are different. The driver will validate the correct NVS size in wl1271_boot_upload_nvs(). [Cleaned up some of the definitions. -- Luca] Signed-off-by: Shahar Levi <shahar_levi@ti.com> Reviewed-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: fix module author's email address in the spi and sdio modulesLuciano Coelho2011-04-04
| | | | | | | | | | The MODULE_AUTHOR() macro in the main module (wl12xx) has been updated to reflect one of the author's new email address, but the wl12xx_spi and wl12xx_sdio modules haven't been updated. This patches updates them. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: Switch to level trigger interruptsIdo Yariv2011-03-03
| | | | | | | | | | | | | | | | | | | | | | | The interrupt of the wl12xx is a level interrupt in nature, since the interrupt line is not auto-reset. However, since resetting the interrupt requires bus transactions, this cannot be done from an interrupt context. Thus, requesting a level interrupt would require to disable the irq and re-enable it after the HW is acknowledged. Since we now request a threaded irq, this can also be done by specifying the IRQF_ONESHOT flag. Triggering on an edge can be problematic in some platforms, if the sampling frequency is not sufficient for detecting very frequent interrupts. In case an interrupt is missed, the driver will hang as the interrupt line will stay high until it is acknowledged by the driver, which will never happen. Fix this by requesting a level triggered interrupt, with the IRQF_ONESHOT flag. Signed-off-by: Ido Yariv <ido@wizery.com> Reviewed-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: Switch to a threaded interrupt handlerIdo Yariv2011-03-03
| | | | | | | | | | | | | | | | | | | | | | | | | To achieve maximal throughput, it is very important to react to interrupts as soon as possible. Currently the interrupt handler wakes up a worker for handling interrupts in process context. A cleaner and more efficient design would be to request a threaded interrupt handler. This handler's priority is very high, and can do blocking operations such as SDIO/SPI transactions. Some work can be deferred, mostly calls to mac80211 APIs (ieee80211_rx_ni and ieee80211_tx_status). By deferring such work to a different worker, we can keep the irq handler thread more I/O responsive. In addition, on multi-core systems the two threads can be scheduled on different cores, which will improve overall performance. The use of WL1271_FLAG_IRQ_PENDING & WL1271_FLAG_IRQ_RUNNING was changed. For simplicity, always query the FW for more pending interrupts. Since there are relatively long bursts of interrupts, the extra FW status read overhead is negligible. In addition, this enables registering the IRQ handler with the ONESHOT option. Signed-off-by: Ido Yariv <ido@wizery.com> Reviewed-by: Luciano Coelho <coelho@ti.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: add missing MODULE_FIRMWARE statment for AP-mode FWArik Nemtsov2011-01-24
| | | | | | | | In wl12xx cards AP-mode requires a separate FW file. Add this file to the module info. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
* wl12xx: use after free in debug codeDan Carpenter2011-01-24
| | | | | | | | If debugging is turned on, then wl1271_dump() dereferences a freed variable. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
* wl1271: Change wl12xx Files NamesShahar Levi2010-11-22
| | | | | | | | | All files name prefix removed due to the fact that wl12xx driver supports wl1271 and wl1273. Also the definition in Kconfig and header files changed respectively. Signed-off-by: Shahar Levi <shahar_levi@ti.com> Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
* wl1251: add wl1251 prefix to all 1251 filesKalle Valo2009-07-10
| | | | | | | | | Now that all 1271 files are split, we can add wl1251_ prefix to the files. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com> Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: Add support for block reading from a fixed register addressJuuso Oikarinen2009-07-10
| | | | | | | | | | Add support for block reading (multiple bytes) from a fixed chipset register address. This is required for the wl1271 TX data path. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: add support for fixed address in wl12xx_spi_readLuciano Coelho2009-07-10
| | | | | | | | | | In the wl1271 implementation, we need to read memory from the register partition using fixed addresses. This change adds the possibility to request fixed address when calling wl12xx_spi_read() or wl12xx_spi_reg_read(). Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: add wl12xx_spi_reg_read() and wl12xx_spi_reg_write() functionsLuciano Coelho2009-07-10
| | | | | | | | | | | In some cases we need to read more than 32 bits from the register area. These functions were added to support that, like the existing wl12xx_spi_mem_read() and wl12xx_spi_mem_write() already do for large blocks in the memory area. Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: allocate buffer the spi busy word from struct wl12xxKalle Valo2009-07-10
| | | | | | | Needed for DMA transfers. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: allocate buffer spi read/write command buffer kzalloc()Kalle Valo2009-07-10
| | | | | | | Needed for DMA safe transfers. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: reserve buffer for partition command in struct wl12xxKalle Valo2009-07-10
| | | | | | | This is now DMA safe. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* wl12xx: add driverKalle Valo2009-05-06
wl12xx is a driver for TI wl1251 802.11 chipset designed for embedded devices, supporting both SDIO and SPI busses. Currently the driver supports only SPI. Adding support 1253 (the 5 GHz version) should be relatively easy. More information here: http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?contentId=4711&navigationId=12494&templateId=6123 (Collapsed original sequence of pre-merge patches into single commit for initial merge. -- JWL) Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-07-28 23:33:18 -0400