Talos™ II Linux sources for OpenPOWER https://git.raptorcs.com/git/talos-op-linux/atom?h=v3.1-rc3 2011-06-27T20:08:05+00:00 2011-06-27T20:08:05+00:00 Igor Grinberg grinberg@compulab.co.il 2011-06-27T20:06:27+00:00 urn:sha1:58c244009ef6ca450f0d787828a7f2f27651db5b Use gpio_request_one() instead of multiple gpiolib calls. This also simplifies error handling a bit. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 2011-05-24T07:06:26+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2011-05-24T07:06:26+00:00 urn:sha1:b73077eb03f510a84b102fb97640e595a958403c 2011-05-12T15:28:57+00:00 Igor Grinberg grinberg@compulab.co.il 2011-05-11T22:45:05+00:00 urn:sha1:1201e7e67634624aec89317cf308cd0d3d8d4770 The pendown gpio was requested but not configured for input. Configure it for input. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 2011-05-12T15:28:56+00:00 Alexander Stein alexander.stein@systec-electronic.com 2011-05-11T23:24:08+00:00 urn:sha1:ebcaaad9d5e8fd284b8dcf25a24999420f0f56d8 Just set vref_mv in your platform config to use external vref. Otherwise the internal one is used. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 2011-05-05T15:50:53+00:00 Alexander Stein alexander.stein@systec-electronic.com 2011-05-05T15:40:46+00:00 urn:sha1:28350e330cfab46b60a1dbf763b678d859f9f3d9 Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 2011-05-05T15:50:47+00:00 Alexander Stein alexander.stein@systec-electronic.com 2011-05-05T15:40:14+00:00 urn:sha1:1dbe7dada2d03d1313183d439068f1f951a91244 req.sample needs its own cacheline otherwise accessing req.msg fetches it in again. Note: This effect doesn't occur if the underlying SPI driver doesn't use DMA at all. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 2011-03-19T06:38:50+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2011-03-19T06:38:50+00:00 urn:sha1:97eb3f24352ec6632c2127b35d8087d2a809a9b9 2011-02-11T08:58:24+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2011-02-04T08:37:26+00:00 urn:sha1:0fbc9fdb7e747500111dcc4a5f5f3ceed0360d71 When driver uses custom pendown detection method gpio_pendown is not set up and so we should not try to free it, otherwise we are presented with: ------------[ cut here ]------------ WARNING: at drivers/gpio/gpiolib.c:1258 gpio_free+0x100/0x12c() Modules linked in: [<c0061208>] (unwind_backtrace+0x0/0xe4) from [<c0091f58>](warn_slowpath_common+0x4c/0x64) [<c0091f58>] (warn_slowpath_common+0x4c/0x64) from [<c0091f88>](warn_slowpath_null+0x18/0x1c) [<c0091f88>] (warn_slowpath_null+0x18/0x1c) from [<c024e610>](gpio_free+0x100/0x12c) [<c024e610>] (gpio_free+0x100/0x12c) from [<c03e9fbc>](ads7846_probe+0xa38/0xc5c) [<c03e9fbc>] (ads7846_probe+0xa38/0xc5c) from [<c02cff14>](spi_drv_probe+0x18/0x1c) [<c02cff14>] (spi_drv_probe+0x18/0x1c) from [<c028bca4>](driver_probe_device+0xc8/0x184) [<c028bca4>] (driver_probe_device+0xc8/0x184) from [<c028bdc8>](__driver_attach+0x68/0x8c) [<c028bdc8>] (__driver_attach+0x68/0x8c) from [<c028b4c8>](bus_for_each_dev+0x48/0x74) [<c028b4c8>] (bus_for_each_dev+0x48/0x74) from [<c028ae08>](bus_add_driver+0xa0/0x220) [<c028ae08>] (bus_add_driver+0xa0/0x220) from [<c028c0c0>](driver_register+0xa8/0x134) [<c028c0c0>] (driver_register+0xa8/0x134) from [<c0050550>](do_one_initcall+0xcc/0x1a4) [<c0050550>] (do_one_initcall+0xcc/0x1a4) from [<c00084e4>](kernel_init+0x14c/0x214) [<c00084e4>] (kernel_init+0x14c/0x214) from [<c005b494>](kernel_thread_exit+0x0/0x8) ---[ end trace 4053287f8a5ec18f ]--- Also rearrange ads7846_setup_pendown() to have only one exit point returning success. Reported-by: Sourav Poddar <sourav.poddar@ti.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Reviewed-by: Charulatha V <charu@ti.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 2011-01-21T06:54:53+00:00 Mark Brown broonie@opensource.wolfsonmicro.com 2011-01-21T06:51:26+00:00 urn:sha1:3c36e719033ddc09aded770472cbdb477fcb4479 There is a move to deprecate bus-specific PM operations and move to using dev_pm_ops instead in order to reduce the amount of boilerplate code in buses and facilitate updates to the PM core. Do this move for the ads7846 driver. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Michael Hennerich <Michael.Hennerich@analog.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru> 2010-10-18T04:10:28+00:00 Jason Wang jason77.wang@gmail.com 2010-10-13T18:35:40+00:00 urn:sha1:2991a1ca6e9b13b639a82c0eec0cbc191bf1f42f Commit 9114337 introduces regulator operations in ads7846 touchscreen driver. Among these operations, some are called while holding a spinlock. On many platforms regulators reside on slow buses, such as I2C/SPI and require sleep while accessing them. The touchscreen itself is also a SPI device and currently relies on asynchronous SPI access to avoid sleeping in interrupt context. Let's switch to using threaded IRQ to be able to access SPI bus synchronously (which simplifies driver a bit); it also allows safe access to the regulators as well. This has been tested on the ti_omap3530evm board: 1) using ts_lib after normal boot 2) using ts_lib after "#echo 1/0 > /sys/bus/spi/devices/spi0.1/disable" 3) using ts_lib after "#echo mem > /sys/power/state" and "wake up" Also tested on pandora. Based on original patch by Dmitry Torokhov. Tested-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Jason Wang <jason77.wang@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>