1 files changed, 209 insertions, 0 deletions

diff --git a/drivers/media/dvb/mantis/mantis_ca.c b/drivers/media/dvb/mantis/mantis_ca.c
new file mode 100644
index 00000000000..3d704690900
--- /dev/null
+++ b/drivers/media/dvb/mantis/mantis_ca.c
@@ -0,0 +1,209 @@
+/*
+        Mantis PCI bridge driver
+
+        Copyright (C) Manu Abraham (abraham.manu@gmail.com)
+
+        This program is free software; you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation; either version 2 of the License, or
+        (at your option) any later version.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program; if not, write to the Free Software
+        Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/signal.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+
+#include "dmxdev.h"
+#include "dvbdev.h"
+#include "dvb_demux.h"
+#include "dvb_frontend.h"
+#include "dvb_net.h"
+
+#include "mantis_common.h"
+#include "mantis_link.h"
+#include "mantis_hif.h"
+#include "mantis_reg.h"
+
+#include "mantis_ca.h"
+
+static int mantis_ca_read_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Read", slot);
+
+        if (slot != 0)
+                return -EINVAL;
+
+        return mantis_hif_read_mem(ca, addr);
+}
+
+static int mantis_ca_write_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr, u8 data)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Write", slot);
+
+        if (slot != 0)
+                return -EINVAL;
+
+        return mantis_hif_write_mem(ca, addr, data);
+}
+
+static int mantis_ca_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Read", slot);
+
+        if (slot != 0)
+                return -EINVAL;
+
+        return mantis_hif_read_iom(ca, addr);
+}
+
+static int mantis_ca_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr, u8 data)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Write", slot);
+
+        if (slot != 0)
+                return -EINVAL;
+
+        return mantis_hif_write_iom(ca, addr, data);
+}
+
+static int mantis_ca_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot RESET", slot);
+        udelay(500); /* Wait.. */
+        mmwrite(0xda, MANTIS_PCMCIA_RESET); /* Leading edge assert */
+        udelay(500);
+        mmwrite(0x00, MANTIS_PCMCIA_RESET); /* Trailing edge deassert */
+        msleep(1000);
+        dvb_ca_en50221_camready_irq(&ca->en50221, 0);
+
+        return 0;
+}
+
+static int mantis_ca_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot shutdown", slot);
+
+        return 0;
+}
+
+static int mantis_ts_control(struct dvb_ca_en50221 *en50221, int slot)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): TS control", slot);
+/*      mantis_set_direction(mantis, 1); */ /* Enable TS through CAM */
+
+        return 0;
+}
+
+static int mantis_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
+{
+        struct mantis_ca *ca = en50221->data;
+        struct mantis_pci *mantis = ca->ca_priv;
+
+        dprintk(MANTIS_DEBUG, 1, "Slot(%d): Poll Slot status", slot);
+
+        if (ca->slot_state == MODULE_INSERTED) {
+                dprintk(MANTIS_DEBUG, 1, "CA Module present and ready");
+                return DVB_CA_EN50221_POLL_CAM_PRESENT | DVB_CA_EN50221_POLL_CAM_READY;
+        } else {
+                dprintk(MANTIS_DEBUG, 1, "CA Module not present or not ready");
+        }
+
+        return 0;
+}
+
+int mantis_ca_init(struct mantis_pci *mantis)
+{
+        struct dvb_adapter *dvb_adapter = &mantis->dvb_adapter;
+        struct mantis_ca *ca;
+        int ca_flags = 0, result;
+
+        dprintk(MANTIS_DEBUG, 1, "Initializing Mantis CA");
+        ca = kzalloc(sizeof(struct mantis_ca), GFP_KERNEL);
+        if (!ca) {
+                dprintk(MANTIS_ERROR, 1, "Out of memory!, exiting ..");
+                result = -ENOMEM;
+                goto err;
+        }
+
+        ca->ca_priv             = mantis;
+        mantis->mantis_ca       = ca;
+        ca_flags                = DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE;
+        /* register CA interface */
+        ca->en50221.owner               = THIS_MODULE;
+        ca->en50221.read_attribute_mem  = mantis_ca_read_attr_mem;
+        ca->en50221.write_attribute_mem = mantis_ca_write_attr_mem;
+        ca->en50221.read_cam_control    = mantis_ca_read_cam_ctl;
+        ca->en50221.write_cam_control   = mantis_ca_write_cam_ctl;
+        ca->en50221.slot_reset          = mantis_ca_slot_reset;
+        ca->en50221.slot_shutdown       = mantis_ca_slot_shutdown;
+        ca->en50221.slot_ts_enable      = mantis_ts_control;
+        ca->en50221.poll_slot_status    = mantis_slot_status;
+        ca->en50221.data                = ca;
+
+        mutex_init(&ca->ca_lock);
+
+        init_waitqueue_head(&ca->hif_data_wq);
+        init_waitqueue_head(&ca->hif_opdone_wq);
+        init_waitqueue_head(&ca->hif_write_wq);
+
+        dprintk(MANTIS_ERROR, 1, "Registering EN50221 device");
+        result = dvb_ca_en50221_init(dvb_adapter, &ca->en50221, ca_flags, 1);
+        if (result != 0) {
+                dprintk(MANTIS_ERROR, 1, "EN50221: Initialization failed <%d>", result);
+                goto err;
+        }
+        dprintk(MANTIS_ERROR, 1, "Registered EN50221 device");
+        mantis_evmgr_init(ca);
+        return 0;
+err:
+        kfree(ca);
+        return result;
+}
+EXPORT_SYMBOL_GPL(mantis_ca_init);
+
+void mantis_ca_exit(struct mantis_pci *mantis)
+{
+        struct mantis_ca *ca = mantis->mantis_ca;
+
+        dprintk(MANTIS_DEBUG, 1, "Mantis CA exit");
+
+        mantis_evmgr_exit(ca);
+        dprintk(MANTIS_ERROR, 1, "Unregistering EN50221 device");
+        if (ca)
+                dvb_ca_en50221_release(&ca->en50221);
+
+        kfree(ca);
+}
+EXPORT_SYMBOL_GPL(mantis_ca_exit);