AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-27 03:35:36 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

staging: wfx: add proper "compatible" string

Browse Source 
Add "compatible" string matching "vendor,chip" template and proper
GPIO flags handling. Keep support for old name and reset polarity
for older devicetrees.

Cc: stable@vger.kernel.org   # d3a5bcb4a1 ("gpio: add gpiod_toggle_active_low()")
Cc: stable@vger.kernel.org
Fixes: 0096214a59 ("staging: wfx: add support for I/O access")
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/0e6dda06f145676861860f073a53dc95987c7ab5.1581416843.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michał Mirosław 2020-02-11 11:35:02 +01:00 committed by Greg Kroah-Hartman
parent e2525a95cc
commit eec6e3ee63
2 changed files with 14 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/staging/wfx/Documentation/devicetree/bindings/net/wireless/siliabs,wfx.txt
View File

@ -6,7 +6,7 @@ SPI
You have to declare the WFxxx chip in your device tree.
Required properties:
- compatible: Should be "silabs,wfx-spi"
- compatible: Should be "silabs,wf200"
- reg: Chip select address of device
- spi-max-frequency: Maximum SPI clocking speed of device in Hz
- interrupts-extended: Should contain interrupt line (interrupt-parent +
@ -15,6 +15,7 @@ Required properties:
Optional properties:
- reset-gpios: phandle of gpio that will be used to reset chip during probe.
Without this property, you may encounter issues with warm boot.
(Legacy: when compatible == "silabs,wfx-spi", the gpio is inverted.)
Please consult Documentation/devicetree/bindings/spi/spi-bus.txt for optional
SPI connection related properties,
@ -23,12 +24,12 @@ Example:
&spi1 {
wfx {
compatible = "silabs,wfx-spi";
compatible = "silabs,wf200";
pinctrl-names = "default";
pinctrl-0 = <&wfx_irq &wfx_gpios>;
interrupts-extended = <&gpio 16 IRQ_TYPE_EDGE_RISING>;
wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
reg = <0>;
spi-max-frequency = <42000000>;
};

14
drivers/staging/wfx/bus_spi.c
View File

@ -27,6 +27,8 @@ MODULE_PARM_DESC(gpio_reset, "gpio number for reset. -1 for none.");
#define SET_WRITE 0x7FFF /* usage: and operation */
#define SET_READ 0x8000 /* usage: or operation */
#define WFX_RESET_INVERTED 1
static const struct wfx_platform_data wfx_spi_pdata = {
.file_fw = "wfm_wf200",
.file_pds = "wf200.pds",
@ -206,9 +208,11 @@ static int wfx_spi_probe(struct spi_device *func)
if (!bus->gpio_reset) {
dev_warn(&func->dev, "try to load firmware anyway\n");
} else {
gpiod_set_value(bus->gpio_reset, 0);
udelay(100);
if (spi_get_device_id(func)->driver_data & WFX_RESET_INVERTED)
gpiod_toggle_active_low(bus->gpio_reset);
gpiod_set_value(bus->gpio_reset, 1);
udelay(100);
gpiod_set_value(bus->gpio_reset, 0);
udelay(2000);
}
@ -245,14 +249,16 @@ static int wfx_spi_remove(struct spi_device *func)
* stripped.
*/
static const struct spi_device_id wfx_spi_id[] = {
{ "wfx-spi", 0 },
{ "wfx-spi", WFX_RESET_INVERTED },
{ "wf200", 0 },
{ },
};
MODULE_DEVICE_TABLE(spi, wfx_spi_id);
#ifdef CONFIG_OF
static const struct of_device_id wfx_spi_of_match[] = {
{ .compatible = "silabs,wfx-spi" },
{ .compatible = "silabs,wfx-spi", .data = (void *)WFX_RESET_INVERTED },
{ .compatible = "silabs,wf200" },
{ },
};
MODULE_DEVICE_TABLE(of, wfx_spi_of_match);