linux-kernel - [PATCHv2 2/2] HSI: nokia-modem: Add cmt-speech support

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Date:	Tue,  3 Mar 2015 01:44:14 +0100
From:	Sebastian Reichel <sre@...nel.org>
To:	Sebastian Reichel <sre@...nel.org>
Cc:	Peter Ujfalusi <peter.ujfalusi@...com>,
	Kai Vehmanen <kvcontact@...ignal.fi>,
	Pavel Machek <pavel@....cz>, Pali Rohar <pali.rohar@...il.com>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org
Subject: [PATCHv2 2/2] HSI: nokia-modem: Add cmt-speech support

Register cmt-speech driver in nokia-modem driver and forward
hsi channel information.

Signed-off-by: Sebastian Reichel <sre@...nel.org>
---
 drivers/hsi/clients/Kconfig       |  2 +-
 drivers/hsi/clients/nokia-modem.c | 31 ++++++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/drivers/hsi/clients/Kconfig b/drivers/hsi/clients/Kconfig
index 26f62f8..77ee7bc 100644
--- a/drivers/hsi/clients/Kconfig
+++ b/drivers/hsi/clients/Kconfig
@@ -6,7 +6,7 @@ comment "HSI clients"
 
 config NOKIA_MODEM
 	tristate "Nokia Modem"
-	depends on HSI && SSI_PROTOCOL
+	depends on HSI && SSI_PROTOCOL && CMT_SPEECH
 	help
 	Say Y here if you want to add support for the modem on Nokia
 	N900 (Nokia RX-51) hardware.
diff --git a/drivers/hsi/clients/nokia-modem.c b/drivers/hsi/clients/nokia-modem.c
index 9be4867..ef6ebda 100644
--- a/drivers/hsi/clients/nokia-modem.c
+++ b/drivers/hsi/clients/nokia-modem.c
@@ -46,6 +46,7 @@ struct nokia_modem_device {
 	struct nokia_modem_gpio	*gpios;
 	int			gpio_amount;
 	struct hsi_client	*ssi_protocol;
+	struct hsi_client	*cmt_speech;
 };
 
 static void do_nokia_modem_rst_ind_tasklet(unsigned long data)
@@ -149,6 +150,7 @@ static int nokia_modem_probe(struct device *dev)
 	struct hsi_port *port = hsi_get_port(cl);
 	int irq, pflags, err;
 	struct hsi_board_info ssip;
+	struct hsi_board_info cmtspeech;
 
 	np = dev->of_node;
 	if (!np) {
@@ -214,12 +216,34 @@ static int nokia_modem_probe(struct device *dev)
 		goto error3;
 	}
 
-	/* TODO: register cmt-speech hsi client */
+	cmtspeech.name = "cmt-speech";
+	cmtspeech.tx_cfg = cl->tx_cfg;
+	cmtspeech.rx_cfg = cl->rx_cfg;
+	cmtspeech.platform_data = NULL;
+	cmtspeech.archdata = NULL;
+
+	modem->cmt_speech = hsi_new_client(port, &cmtspeech);
+	if (!modem->cmt_speech) {
+		dev_err(dev, "Could not register cmt-speech device\n");
+		goto error3;
+	}
+
+	err = device_attach(&modem->cmt_speech->device);
+	if (err == 0) {
+		dev_err(dev, "Missing cmt-speech driver\n");
+		err = -EPROBE_DEFER;
+		goto error4;
+	} else if (err < 0) {
+		dev_err(dev, "Could not load cmt-speech driver (%d)\n", err);
+		goto error4;
+	}
 
 	dev_info(dev, "Registered Nokia HSI modem\n");
 
 	return 0;
 
+error4:
+	hsi_remove_client(&modem->cmt_speech->device, NULL);
 error3:
 	hsi_remove_client(&modem->ssi_protocol->device, NULL);
 error2:
@@ -238,6 +262,11 @@ static int nokia_modem_remove(struct device *dev)
 	if (!modem)
 		return 0;
 
+	if (modem->cmt_speech) {
+		hsi_remove_client(&modem->cmt_speech->device, NULL);
+		modem->cmt_speech = NULL;
+	}
+
 	if (modem->ssi_protocol) {
 		hsi_remove_client(&modem->ssi_protocol->device, NULL);
 		modem->ssi_protocol = NULL;
-- 
2.1.4

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