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path: root/drivers/media/pci/mantis/mantis_pcmcia.c
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Diffstat (limited to 'drivers/media/pci/mantis/mantis_pcmcia.c')
-rw-r--r--drivers/media/pci/mantis/mantis_pcmcia.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/media/pci/mantis/mantis_pcmcia.c b/drivers/media/pci/mantis/mantis_pcmcia.c
new file mode 100644
index 000000000..e4eac069e
--- /dev/null
+++ b/drivers/media/pci/mantis/mantis_pcmcia.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ Mantis PCI bridge driver
+
+ Copyright (C) Manu Abraham (abraham.manu@gmail.com)
+
+*/
+
+#include <linux/kernel.h>
+
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+
+#include <media/dmxdev.h>
+#include <media/dvbdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_frontend.h>
+#include <media/dvb_net.h>
+
+#include "mantis_common.h"
+#include "mantis_link.h" /* temporary due to physical layer stuff */
+#include "mantis_reg.h"
+
+/*
+ * If Slot state is already PLUG_IN event and we are called
+ * again, definitely it is jitter alone
+ */
+void mantis_event_cam_plugin(struct mantis_ca *ca)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+
+ u32 gpif_irqcfg;
+
+ if (ca->slot_state == MODULE_XTRACTED) {
+ dprintk(MANTIS_DEBUG, 1, "Event: CAM Plugged IN: Adapter(%d) Slot(0)", mantis->num);
+ udelay(50);
+ mmwrite(0xda000000, MANTIS_CARD_RESET);
+ gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
+ gpif_irqcfg |= MANTIS_MASK_PLUGOUT;
+ gpif_irqcfg &= ~MANTIS_MASK_PLUGIN;
+ mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
+ udelay(500);
+ ca->slot_state = MODULE_INSERTED;
+ }
+ udelay(100);
+}
+
+/*
+ * If Slot state is already UN_PLUG event and we are called
+ * again, definitely it is jitter alone
+ */
+void mantis_event_cam_unplug(struct mantis_ca *ca)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+
+ u32 gpif_irqcfg;
+
+ if (ca->slot_state == MODULE_INSERTED) {
+ dprintk(MANTIS_DEBUG, 1, "Event: CAM Unplugged: Adapter(%d) Slot(0)", mantis->num);
+ udelay(50);
+ mmwrite(0x00da0000, MANTIS_CARD_RESET);
+ gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
+ gpif_irqcfg |= MANTIS_MASK_PLUGIN;
+ gpif_irqcfg &= ~MANTIS_MASK_PLUGOUT;
+ mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
+ udelay(500);
+ ca->slot_state = MODULE_XTRACTED;
+ }
+ udelay(100);
+}
+
+int mantis_pcmcia_init(struct mantis_ca *ca)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+
+ u32 gpif_stat, card_stat;
+
+ mantis_unmask_ints(mantis, MANTIS_INT_IRQ0);
+ gpif_stat = mmread(MANTIS_GPIF_STATUS);
+ card_stat = mmread(MANTIS_GPIF_IRQCFG);
+
+ if (gpif_stat & MANTIS_GPIF_DETSTAT) {
+ dprintk(MANTIS_DEBUG, 1, "CAM found on Adapter(%d) Slot(0)", mantis->num);
+ mmwrite(card_stat | MANTIS_MASK_PLUGOUT, MANTIS_GPIF_IRQCFG);
+ ca->slot_state = MODULE_INSERTED;
+ dvb_ca_en50221_camchange_irq(&ca->en50221,
+ 0,
+ DVB_CA_EN50221_CAMCHANGE_INSERTED);
+ } else {
+ dprintk(MANTIS_DEBUG, 1, "Empty Slot on Adapter(%d) Slot(0)", mantis->num);
+ mmwrite(card_stat | MANTIS_MASK_PLUGIN, MANTIS_GPIF_IRQCFG);
+ ca->slot_state = MODULE_XTRACTED;
+ dvb_ca_en50221_camchange_irq(&ca->en50221,
+ 0,
+ DVB_CA_EN50221_CAMCHANGE_REMOVED);
+ }
+
+ return 0;
+}
+
+void mantis_pcmcia_exit(struct mantis_ca *ca)
+{
+ struct mantis_pci *mantis = ca->ca_priv;
+
+ mmwrite(mmread(MANTIS_GPIF_STATUS) & (~MANTIS_CARD_PLUGOUT | ~MANTIS_CARD_PLUGIN), MANTIS_GPIF_STATUS);
+ mantis_mask_ints(mantis, MANTIS_INT_IRQ0);
+}