HSI: nokia-modem: Add cmt-speech support

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

Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

2 files changed, 32 insertions, 2 deletions

diff --git a/drivers/hsi/clients/Kconfig b/drivers/hsi/clients/Kconfig
index 86c849506f34..d6126200361f 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 9be4867fa224..bbb19231fa82 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 +216,35 @@ 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");
+                err = -ENOMEM;
+                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 +263,11 @@ 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;