Commit 3648dc6d authored by Christophe Ricard's avatar Christophe Ricard Committed by Samuel Ortiz
Browse files

NFC: st-nci: Add ese-present/uicc-present dts properties 



In order to align with st21nfca, dts configuration properties
ese_present and uicc_present are made available in st-nci driver.

So far, in early development firmware, because
nci_nfcee_mode_set(DISABLE) was not supported we had to try to
enable it during the secure element discovery phase.

After several trials on commercial and qualified firmware it appears
that nci_nfcee_mode_set(ENABLE) and nci_nfcee_mode_set(DISABLE) are
properly supported.

Such feature also help us to eventually save some time (~5ms) when
only one secure element is connected.

Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarChristophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent be73c2cb

Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt

+7 −0
Original line number Diff line number Diff line
@@ -11,6 +11,10 @@ Required properties: 
Optional SoC Specific Properties:

- pinctrl-names: Contains only one value - "default".

- pintctrl-0: Specifies the pin control groups used for this controller.

- ese-present: Specifies that an ese is physically connected to the nfc

controller.

- uicc-present: Specifies that the uicc swp signal can be physically

connected to the nfc controller.



Example (for ARM-based BeagleBoard xM with ST21NFCB on I2C2):
@@ -29,5 +33,8 @@ Example (for ARM-based BeagleBoard xM with ST21NFCB on I2C2): 
		interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;



		reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;



		ese-present;

		uicc-present;

	};

};

Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt

+8 −1
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 


Required properties:

- compatible: Should be "st,st21nfcb-spi"

- spi-max-frequency: Maximum SPI frequency (<= 10000000).

- spi-max-frequency: Maximum SPI frequency (<= 4000000).

- interrupt-parent: phandle for the interrupt gpio controller

- interrupts: GPIO interrupt to which the chip is connected

- reset-gpios: Output GPIO pin used to reset the ST21NFCB
@@ -10,6 +10,10 @@ Required properties: 
Optional SoC Specific Properties:

- pinctrl-names: Contains only one value - "default".

- pintctrl-0: Specifies the pin control groups used for this controller.

- ese-present: Specifies that an ese is physically connected to the nfc

controller.

- uicc-present: Specifies that the uicc swp signal can be physically

connected to the nfc controller.



Example (for ARM-based BeagleBoard xM with ST21NFCB on SPI4):
@@ -27,5 +31,8 @@ Example (for ARM-based BeagleBoard xM with ST21NFCB on SPI4): 
		interrupts = <2 IRQ_TYPE_EDGE_RISING>;



		reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;



		ese-present;

		uicc-present;

	};

};

drivers/nfc/st-nci/core.c

+2 −2
Original line number Diff line number Diff line
@@ -123,7 +123,7 @@ static struct nci_ops st_nci_ops = { 
};



int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,

		       int phy_tailroom)

		 int phy_tailroom, struct st_nci_se_status *se_status)

{

	struct st_nci_info *info;

	int r;
@@ -164,7 +164,7 @@ int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom, 
		goto err_reg_dev;

	}



	return st_nci_se_init(ndlc->ndev);

	return st_nci_se_init(ndlc->ndev, se_status);



err_reg_dev:

	nci_free_device(ndlc->ndev);

drivers/nfc/st-nci/i2c.c

+11 −1
Original line number Diff line number Diff line
@@ -52,6 +52,8 @@ struct st_nci_i2c_phy { 


	unsigned int gpio_reset;

	unsigned int irq_polarity;



	struct st_nci_se_status se_status;

};



#define I2C_DUMP_SKB(info, skb)					\
@@ -245,6 +247,11 @@ static int st_nci_i2c_of_request_resources(struct i2c_client *client) 


	phy->irq_polarity = irq_get_trigger_type(client->irq);



	phy->se_status.is_ese_present =

				of_property_read_bool(pp, "ese-present");

	phy->se_status.is_uicc_present =

				of_property_read_bool(pp, "uicc-present");



	return 0;

}

#else
@@ -277,6 +284,9 @@ static int st_nci_i2c_request_resources(struct i2c_client *client) 
		return r;

	}



	phy->se_status.is_ese_present = pdata->is_ese_present;

	phy->se_status.is_uicc_present = pdata->is_uicc_present;



	return 0;

}
@@ -326,7 +336,7 @@ static int st_nci_i2c_probe(struct i2c_client *client, 


	r = ndlc_probe(phy, &i2c_phy_ops, &client->dev,

			ST_NCI_FRAME_HEADROOM, ST_NCI_FRAME_TAILROOM,

			&phy->ndlc);

			&phy->ndlc, &phy->se_status);

	if (r < 0) {

		nfc_err(&client->dev, "Unable to register ndlc layer\n");

		return r;

drivers/nfc/st-nci/ndlc.c

+4 −2
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <net/nfc/nci_core.h>



#include "st-nci.h"

#include "ndlc.h"



#define NDLC_TIMER_T1		100

#define NDLC_TIMER_T1_WAIT	400
@@ -265,7 +266,8 @@ static void ndlc_t2_timeout(unsigned long data) 
}



int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,

	       int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id)

	       int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id,

	       struct st_nci_se_status *se_status)

{

	struct llt_ndlc *ndlc;
@@ -295,7 +297,7 @@ int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev, 


	INIT_WORK(&ndlc->sm_work, llt_ndlc_sm_work);



	return st_nci_probe(ndlc, phy_headroom, phy_tailroom);

	return st_nci_probe(ndlc, phy_headroom, phy_tailroom, se_status);

}

EXPORT_SYMBOL(ndlc_probe);

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