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Date: Thu, 5 Nov 2015 15:38:18 -0800 From: Andrew Duggan <aduggan@...aptics.com> To: <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: Benjamin Tissoires <benjamin.tissoires@...hat.com>, Dmitry Torokhov <dmitry.torokhov@...il.com>, Linus Walleij <linus.walleij@...aro.org>, Benjamin Tissoires <benjamin.tissoires@...il.com>, Christopher Heiny <cheiny@...aptics.com>, Stephen Chandler Paul <cpaul@...hat.com> Subject: [PATCH 06/26] Input: synaptics-rmi4 - add a reset callback From: Benjamin Tissoires <benjamin.tissoires@...hat.com> When a device is physically reset, the transport layer may need to reset its state too and also do extra work to make the device accessible on the bus. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com> Tested-by: Andrew Duggan <aduggan@...aptics.com> --- drivers/input/rmi4/rmi_bus.h | 1 + drivers/input/rmi4/rmi_driver.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/input/rmi4/rmi_bus.h b/drivers/input/rmi4/rmi_bus.h index d4cfc85..41d6c3d 100644 --- a/drivers/input/rmi4/rmi_bus.h +++ b/drivers/input/rmi4/rmi_bus.h @@ -197,6 +197,7 @@ struct rmi_transport_ops { int (*enable_device) (struct rmi_transport_dev *xport); void (*disable_device) (struct rmi_transport_dev *xport); + int (*reset)(struct rmi_transport_dev *xport, u16 reset_addr); }; /** diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index 264bc62..81e7c55 100644 --- a/drivers/input/rmi4/rmi_driver.c +++ b/drivers/input/rmi4/rmi_driver.c @@ -611,6 +611,14 @@ static int rmi_initial_reset(struct rmi_device *rmi_dev, const struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev); + if (rmi_dev->xport->ops->reset) { + if (rmi_dev->xport->ops->reset(rmi_dev->xport, + cmd_addr)) + return error; + + return RMI_SCAN_DONE; + } + error = rmi_write_block(rmi_dev, cmd_addr, &cmd_buf, 1); if (error) { dev_err(&rmi_dev->dev, -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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