DVB (2428): Fixes for the topuptv/SCM mediaguard CAM module in KNC1 CI module

- Fixes for the topuptv/SCM mediaguard CAM module in KNC1 CI module

Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>

1 files changed, 23 insertions, 5 deletions

diff --git a/drivers/media/dvb/ttpci/budget-av.c b/drivers/media/dvb/ttpci/budget-av.c
index 9f51bae7194..8bc784ab197 100644
--- a/drivers/media/dvb/ttpci/budget-av.c
+++ b/drivers/media/dvb/ttpci/budget-av.c
@@ -127,7 +127,7 @@ static int ciintf_read_attribute_mem(struct dvb_ca_en50221 *ca, int slot, int ad
         saa7146_setgpio(budget_av->budget.dev, 1, SAA7146_GPIO_OUTHI);
         udelay(1);
 
-        result = ttpci_budget_debiread(&budget_av->budget, DEBICICAM, address & 0xfff, 1, 0, 0);
+        result = ttpci_budget_debiread(&budget_av->budget, DEBICICAM, address & 0xfff, 1, 0, 1);
 
         if (result == -ETIMEDOUT)
                 budget_av->slot_status = 0;
@@ -145,7 +145,7 @@ static int ciintf_write_attribute_mem(struct dvb_ca_en50221 *ca, int slot, int a
         saa7146_setgpio(budget_av->budget.dev, 1, SAA7146_GPIO_OUTHI);
         udelay(1);
 
-        result = ttpci_budget_debiwrite(&budget_av->budget, DEBICICAM, address & 0xfff, 1, value, 0, 0);
+        result = ttpci_budget_debiwrite(&budget_av->budget, DEBICICAM, address & 0xfff, 1, value, 0, 1);
 
         if (result == -ETIMEDOUT)
                 budget_av->slot_status = 0;
@@ -192,7 +192,7 @@ static int ciintf_slot_reset(struct dvb_ca_en50221 *ca, int slot)
 {
         struct budget_av *budget_av = (struct budget_av *) ca->data;
         struct saa7146_dev *saa = budget_av->budget.dev;
-        int timeout = 500; // 5 seconds (4.4.6 Ready)
+        int timeout = 50; // 5 seconds (4.4.6 Ready)
 
         if (slot != 0)
                 return -EINVAL;
@@ -256,19 +256,37 @@ static int ciintf_poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int open
 {
         struct budget_av *budget_av = (struct budget_av *) ca->data;
         struct saa7146_dev *saa = budget_av->budget.dev;
+        int cam_present = 0;
 
         if (slot != 0)
                 return -EINVAL;
 
-        if (!budget_av->slot_status) {
+        if (!budget_av->slot_status)
+        {
+                // first of all test the card detect line
                 saa7146_setgpio(saa, 3, SAA7146_GPIO_INPUT);
                 udelay(1);
                 if (saa7146_read(saa, PSR) & MASK_06)
                 {
+                        cam_present = 1;
+                }
+                saa7146_setgpio(saa, 3, SAA7146_GPIO_OUTLO);
+
+                // that is unreliable however, so try and read from IO memory
+                if (!cam_present)
+                {
+                        saa7146_setgpio(budget_av->budget.dev, 1, SAA7146_GPIO_OUTLO);
+                        if (ttpci_budget_debiread(&budget_av->budget, DEBICICAM, 0, 1, 0, 1) != -ETIMEDOUT)
+                        {
+                                cam_present = 1;
+                        }
+                }
+
+                // did we find something?
+                if (cam_present) {
                         printk(KERN_INFO "budget-av: cam inserted\n");
                         budget_av->slot_status = 1;
                 }
-                saa7146_setgpio(saa, 3, SAA7146_GPIO_OUTLO);
         } else if (!open) {
                 saa7146_setgpio(budget_av->budget.dev, 1, SAA7146_GPIO_OUTLO);
                 if (ttpci_budget_debiread(&budget_av->budget, DEBICICAM, 0, 1, 0, 1) == -ETIMEDOUT)