From: Xinming Hu <[email protected]>
Add device tree binding documentation for MARVELL's sd8xxx
(sd8897 and sd8997) wlan chip.
Signed-off-by: Xinming Hu <[email protected]>
Signed-off-by: Amitkumar Karwar <[email protected]>
---
Listing changelist for both 1/2 and 2/2 patches
v3: Don't update adapter->dt_node if mwifiex_plt_dev is NULL
v4: a)Corrected the 'name' and 'compatible' property names.(Arnd Bergmann and Rob
Herring)
b)Patch description wraped in 72 columns(Rob Herring)
c)Moved DT binding file to bindings/net/wireless/(Rob Herring)
d)Renamed "mwifiex,chip-gpio" to "marvell,wakeup-gpios"(Rob Herring/
Arnd Bergmann)
e)Replaced #ifdef with __maybe_unused(Arnd Bergmann)
v5: a)Removed wildcards from compatible string(Arnd Bergmann)
b)Prepared single patch for all binding changes(Rob Herring)
c)Specified our node as a subnode of SDIO controller. With this approach, we
don't need to register new platform driver. (Rob herring)
v6: a)List out the specific property names for marvell,caldata* and size of the data(Rob Herring)
b)Use sdio function number for both the unit address and reg(Rob Herring)
---
.../bindings/net/wireless/marvell-sd8xxx.txt | 63 ++++++++++++++++++++++
1 file changed, 63 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
new file mode 100644
index 0000000..337fed4
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
@@ -0,0 +1,63 @@
+Marvell 8897/8997 (sd8897/sd8997) SDIO devices
+------
+
+This node provides properties for controlling the marvell sdio wireless device.
+The node is expected to be specified as a child node to the SDIO controller that
+connects the device to the system.
+
+Required properties:
+
+ - compatible : should be one of the following:
+ * "marvell,sd8897"
+ * "marvell,sd8997"
+
+Optional properties:
+
+ - marvell,caldata* : A series of properties with marvell,caldata prefix,
+ represent calibration data downloaded to the device during
+ initialization. This is an array of unsigned values.
+ the properties should follow below property name and
+ corresponding array length:
+ "marvell,caldata_00_txpwrlimit_2g_cfg_set" (length = 566).
+ "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub0" (length = 502).
+ "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub1" (length = 688).
+ "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub2" (length = 750).
+ "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub3" (length = 502).
+ - marvell,wakeup-pin : 'wakeuppin' is a wakeup pin number of wifi chip which will
+ be configured to firmware. firmware will wakeup host side use
+ the pin during suspend/resume stage.
+ - interrupt-parent: phandle of the parent interrupt controller
+ - interrupts : interrupt pin number to the cpu. driver will request an irq based on
+ this interrupt number. during system suspend, the irq will be enabled
+ as system wakeup source, so that the wifi chip can wakeup host
+ platform under certain condition. during system resume, the irq will
+ be disabled to make sure unnecessary interrupt is not received.
+
+Example:
+
+Tx power limit calibration data is configured in below example.
+The calibration data is an array of unsigned values, the length
+can vary between hw versions.
+IRQ pin 38 is used as system wakeup source interrupt. wakeup pin 3 is configured
+so that firmware can wakeup host using this device side pin.
+
+&mmc3 {
+ status = "okay";
+ vmmc-supply = <&wlan_en_reg>;
+ bus-width = <4>;
+ cap-power-off-card;
+ keep-power-in-suspend;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ mwifiex: mwifiex@1 {
+ compatible = "marvell,sd8897";
+ reg = <1>;
+ interrupt-parent = <&pio>;
+ interrupts = <38 IRQ_TYPE_LEVEL_LOW>;
+
+ marvell,caldata_00_txpwrlimit_2g_cfg_set = /bits/ 8 <
+ 0x01 0x00 0x06 0x00 0x08 0x02 0x89 0x01>;
+ marvell,wakeup-pin = <3>;
+ };
+};
--
1.8.1.4
From: Xinming Hu <[email protected]>
On some arm-based platforms, we need to configure platform specific
parameters by device tree node and also define our node as a child
node of parent SDIO host controller.
This patch parses these parameters from device tree. It includes
calibration data dowoload to firmware, wakeup pin configured to firmware,
and soc specific wake up gpio, which will be set as wakeup interrupt pin.
Signed-off-by: Xinming Hu <[email protected]>
Signed-off-by: Amitkumar Karwar <[email protected]>
---
drivers/net/wireless/marvell/mwifiex/main.h | 11 ++++
drivers/net/wireless/marvell/mwifiex/sdio.c | 77 ++++++++++++++++++++++++++
drivers/net/wireless/marvell/mwifiex/sdio.h | 7 +++
drivers/net/wireless/marvell/mwifiex/sta_cmd.c | 14 ++++-
4 files changed, 106 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
index eb2c90c..9da27cf 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -37,6 +37,17 @@
#include <linux/idr.h>
#include <linux/inetdevice.h>
#include <linux/devcoredump.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/of_gpio.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/of_irq.h>
#include "decl.h"
#include "ioctl.h"
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index 901c064..c55e69b 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -73,6 +73,66 @@ static struct memory_type_mapping mem_type_mapping_tbl[] = {
{"EXTLAST", NULL, 0, 0xFE},
};
+static const struct of_device_id mwifiex_sdio_of_match_table[] = {
+ { .compatible = "marvell,sd8897" },
+ { .compatible = "marvell,sd8997" },
+ { }
+};
+
+static irqreturn_t mwifiex_wake_irq_wifi(int irq, void *priv)
+{
+ struct mwifiex_plt_wake_cfg *cfg = priv;
+
+ if (cfg->irq_wifi >= 0) {
+ pr_info("%s: wake by wifi", __func__);
+ cfg->wake_by_wifi = true;
+ disable_irq_nosync(irq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/* This function parse device tree node using mmc subnode devicetree API.
+ * The device node is saved in card->plt_of_node.
+ * if the device tree node exist and include interrupts attributes, this
+ * function will also request platform specific wakeup interrupt.
+ */
+static int mwifiex_sdio_probe_of(struct device *dev, struct sdio_mmc_card *card)
+{
+ struct mwifiex_plt_wake_cfg *cfg;
+ int ret;
+
+ if (!dev->of_node ||
+ !of_match_node(mwifiex_sdio_of_match_table, dev->of_node)) {
+ pr_err("sdio platform data not available");
+ return -1;
+ }
+
+ card->plt_of_node = dev->of_node;
+ card->plt_wake_cfg = devm_kzalloc(dev, sizeof(*card->plt_wake_cfg),
+ GFP_KERNEL);
+ cfg = card->plt_wake_cfg;
+ if (cfg && card->plt_of_node) {
+ cfg->irq_wifi = irq_of_parse_and_map(card->plt_of_node, 0);
+ if (!cfg->irq_wifi) {
+ dev_err(dev, "fail to parse irq_wifi from device tree");
+ } else {
+ ret = devm_request_irq(dev, cfg->irq_wifi,
+ mwifiex_wake_irq_wifi,
+ IRQF_TRIGGER_LOW,
+ "wifi_wake", cfg);
+ if (ret) {
+ dev_err(dev,
+ "Failed to request irq_wifi %d (%d)\n",
+ cfg->irq_wifi, ret);
+ }
+ disable_irq(cfg->irq_wifi);
+ }
+ }
+
+ return 0;
+}
+
/*
* SDIO probe.
*
@@ -127,6 +187,9 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
return -EIO;
}
+ /* device tree node parsing and platform specific configuration*/
+ mwifiex_sdio_probe_of(&func->dev, card);
+
if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops,
MWIFIEX_SDIO)) {
pr_err("%s: add card failed\n", __func__);
@@ -183,6 +246,13 @@ static int mwifiex_sdio_resume(struct device *dev)
mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
MWIFIEX_SYNC_CMD);
+ /* Disable platform specific wakeup interrupt */
+ if (card->plt_wake_cfg && card->plt_wake_cfg->irq_wifi >= 0) {
+ disable_irq_wake(card->plt_wake_cfg->irq_wifi);
+ if (!card->plt_wake_cfg->wake_by_wifi)
+ disable_irq(card->plt_wake_cfg->irq_wifi);
+ }
+
return 0;
}
@@ -262,6 +332,13 @@ static int mwifiex_sdio_suspend(struct device *dev)
adapter = card->adapter;
+ /* Enable platform specific wakeup interrupt */
+ if (card->plt_wake_cfg && card->plt_wake_cfg->irq_wifi >= 0) {
+ card->plt_wake_cfg->wake_by_wifi = false;
+ enable_irq(card->plt_wake_cfg->irq_wifi);
+ enable_irq_wake(card->plt_wake_cfg->irq_wifi);
+ }
+
/* Enable the Host Sleep */
if (!mwifiex_enable_hs(adapter)) {
mwifiex_dbg(adapter, ERROR,
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.h b/drivers/net/wireless/marvell/mwifiex/sdio.h
index b9fbc5c..db837f1 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.h
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.h
@@ -154,6 +154,11 @@
a->mpa_rx.start_port = 0; \
} while (0)
+struct mwifiex_plt_wake_cfg {
+ int irq_wifi;
+ bool wake_by_wifi;
+};
+
/* data structure for SDIO MPA TX */
struct mwifiex_sdio_mpa_tx {
/* multiport tx aggregation buffer pointer */
@@ -237,6 +242,8 @@ struct mwifiex_sdio_card_reg {
struct sdio_mmc_card {
struct sdio_func *func;
struct mwifiex_adapter *adapter;
+ struct device_node *plt_of_node;
+ struct mwifiex_plt_wake_cfg *plt_wake_cfg;
const char *firmware;
const struct mwifiex_sdio_card_reg *reg;
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
index 30f1526..930495b 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_cmd.c
@@ -2134,6 +2134,7 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta, bool init)
enum state_11d_t state_11d;
struct mwifiex_ds_11n_tx_cfg tx_cfg;
u8 sdio_sp_rx_aggr_enable;
+ int data;
if (first_sta) {
if (priv->adapter->iface_type == MWIFIEX_PCIE) {
@@ -2154,9 +2155,16 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta, bool init)
* The cal-data can be read from device tree and/or
* a configuration file and downloaded to firmware.
*/
- adapter->dt_node =
- of_find_node_by_name(NULL, "marvell_cfgdata");
- if (adapter->dt_node) {
+ if (priv->adapter->iface_type == MWIFIEX_SDIO &&
+ adapter->dev->of_node) {
+ adapter->dt_node = adapter->dev->of_node;
+ if (of_property_read_u32(adapter->dt_node,
+ "marvell,wakeup-pin",
+ &data) == 0) {
+ pr_debug("Wakeup pin = 0x%x\n", data);
+ adapter->hs_cfg.gpio = data;
+ }
+
ret = mwifiex_dnld_dt_cfgdata(priv, adapter->dt_node,
"marvell,caldata");
if (ret)
--
1.8.1.4
On Wed, Mar 30, 2016 at 8:19 AM, Amitkumar Karwar <[email protected]> wrote:
> From: Xinming Hu <[email protected]>
>
> Add device tree binding documentation for MARVELL's sd8xxx
> (sd8897 and sd8997) wlan chip.
>
> Signed-off-by: Xinming Hu <[email protected]>
> Signed-off-by: Amitkumar Karwar <[email protected]>
> ---
> Listing changelist for both 1/2 and 2/2 patches
> v3: Don't update adapter->dt_node if mwifiex_plt_dev is NULL
>
> v4: a)Corrected the 'name' and 'compatible' property names.(Arnd Bergmann and Rob
> Herring)
> b)Patch description wraped in 72 columns(Rob Herring)
> c)Moved DT binding file to bindings/net/wireless/(Rob Herring)
> d)Renamed "mwifiex,chip-gpio" to "marvell,wakeup-gpios"(Rob Herring/
> Arnd Bergmann)
> e)Replaced #ifdef with __maybe_unused(Arnd Bergmann)
>
> v5: a)Removed wildcards from compatible string(Arnd Bergmann)
> b)Prepared single patch for all binding changes(Rob Herring)
> c)Specified our node as a subnode of SDIO controller. With this approach, we
> don't need to register new platform driver. (Rob herring)
>
> v6: a)List out the specific property names for marvell,caldata* and size of the data(Rob Herring)
> b)Use sdio function number for both the unit address and reg(Rob Herring)
> ---
> .../bindings/net/wireless/marvell-sd8xxx.txt | 63 ++++++++++++++++++++++
> 1 file changed, 63 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
>
> diff --git a/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt b/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> new file mode 100644
> index 0000000..337fed4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/wireless/marvell-sd8xxx.txt
> @@ -0,0 +1,63 @@
> +Marvell 8897/8997 (sd8897/sd8997) SDIO devices
> +------
> +
> +This node provides properties for controlling the marvell sdio wireless device.
> +The node is expected to be specified as a child node to the SDIO controller that
> +connects the device to the system.
> +
> +Required properties:
> +
> + - compatible : should be one of the following:
> + * "marvell,sd8897"
> + * "marvell,sd8997"
> +
> +Optional properties:
> +
> + - marvell,caldata* : A series of properties with marvell,caldata prefix,
> + represent calibration data downloaded to the device during
> + initialization. This is an array of unsigned values.
unsigned 8-bit values...
> + the properties should follow below property name and
> + corresponding array length:
> + "marvell,caldata_00_txpwrlimit_2g_cfg_set" (length = 566).
> + "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub0" (length = 502).
> + "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub1" (length = 688).
> + "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub2" (length = 750).
> + "marvell,caldata_00_txpwrlimit_5g_cfg_set_sub3" (length = 502).
The 00 and cfg_set seem pretty pointless, and '-' is preferred over '_'. So:
marvell,caldata-txpwrlimit-5g-sub3
> + - marvell,wakeup-pin : 'wakeuppin' is a wakeup pin number of wifi chip which will
Drop "wakeuppin is"
> + be configured to firmware. firmware will wakeup host side use
> + the pin during suspend/resume stage.
> + - interrupt-parent: phandle of the parent interrupt controller
> + - interrupts : interrupt pin number to the cpu. driver will request an irq based on
> + this interrupt number. during system suspend, the irq will be enabled
> + as system wakeup source, so that the wifi chip can wakeup host
You need to use the wakeup-source binding here
(bindings/power/wakeup-source.txt). Probably on the BT binding too?
> + platform under certain condition. during system resume, the irq will
> + be disabled to make sure unnecessary interrupt is not received.
> +
> +Example:
> +
> +Tx power limit calibration data is configured in below example.
> +The calibration data is an array of unsigned values, the length
> +can vary between hw versions.
> +IRQ pin 38 is used as system wakeup source interrupt. wakeup pin 3 is configured
> +so that firmware can wakeup host using this device side pin.
> +
> +&mmc3 {
> + status = "okay";
> + vmmc-supply = <&wlan_en_reg>;
> + bus-width = <4>;
> + cap-power-off-card;
> + keep-power-in-suspend;
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> + mwifiex: mwifiex@1 {
wifi@1
> + compatible = "marvell,sd8897";
> + reg = <1>;
> + interrupt-parent = <&pio>;
> + interrupts = <38 IRQ_TYPE_LEVEL_LOW>;
> +
> + marvell,caldata_00_txpwrlimit_2g_cfg_set = /bits/ 8 <
> + 0x01 0x00 0x06 0x00 0x08 0x02 0x89 0x01>;
> + marvell,wakeup-pin = <3>;
> + };
> +};
> --
> 1.8.1.4
>
> --
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