The probe function is not invoked because the controller does not allow to reach the max_speed_hz. I did not realize this before because, even if the debug messages were enabled, I did not see any warning message about this.
-- llandre DAVE Electronics System House - R&D Department web: http://www.dave-tech.it email: r&[EMAIL PROTECTED] > Hi all, > > I'm working with kernel 2.6.21.3 on Freescale iMXL-based platform. > I have to write a SPI protocol driver for Quantum QT510 touch controller. > As starting point for board-init code I used the driver released by > Pavel Pisa: > http://rtime.felk.cvut.cz/repos/ppisa-linux-devel/kernel-patches/current/pimx1-board-spi.patch > > In protocol driver I defined spi_driver like this: > > static struct spi_driver qt510_driver = { > .driver = { > .name = QT510_MODALIAS, > .owner = THIS_MODULE, > }, > .probe = qt510_probe, > .remove = __devexit_p(qt510_remove), > }; > > static int __init qt510_init(void) > { > return spi_register_driver(&qt510_driver); > } > module_init(qt510_init); > > > In board-init code I used the same name for modalias field: > > > static struct spi_board_info parsy_spi_board_infos[] __initdata = { > { > .modalias = "loopback", > .max_speed_hz = 1600000, > .bus_num = 1, > .chip_select = 0x00, > .mode = SPI_MODE_0, > .controller_data = &spi_controller_data[0], > }, > { > .modalias = QT510_MODALIAS, > .max_speed_hz = QT510_SPI_CLK_MAX, > .bus_num = 1, > .chip_select = 0x01, > .mode = SPI_MODE_3, > .controller_data = &spi_controller_data[1], > }, > { > .modalias = "tbd", > .max_speed_hz = 1600000, > .bus_num = 1, > .chip_select = 0x2, > .mode = SPI_MODE_0, > .controller_data = &spi_controller_data[2], > }, > }; > > > However the probe function (qt510_probe) is never invoked. > In my understanding this is due to the fact that there are no devices > associated to the bus: > > bash-3.00# ls -la /sys/bus/spi/devices/ > total 0 > drwxr-xr-x 2 root root 0 Jan 1 1970 . > drwxr-xr-x 4 root root 0 Jan 1 1970 .. > bash-3.00# ls -la /sys/bus/spi/drivers/ > total 0 > drwxr-xr-x 4 root root 0 Jan 1 1970 . > drwxr-xr-x 4 root root 0 Jan 1 1970 .. > drwxr-xr-x 2 root root 0 Jan 1 1970 qt510 > drwxr-xr-x 2 root root 0 Jan 1 1970 spidev > bash-3.00# > > Am I missing something? > > TIA, > llandre > > DAVE Electronics System House - R&D Department > web: http://www.dave-tech.it > email: r&[EMAIL PROTECTED] > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > spi-devel-general mailing list > spi-devel-general@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/spi-devel-general > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
