clean up ssc driver

[openwrt.git] / target / linux / ifxmips / files / drivers / char / ifxmips_ssc.c

diff --git a/target/linux/ifxmips/files/drivers/char/ifxmips_ssc.c b/target/linux/ifxmips/files/drivers/char/ifxmips_ssc.c
index 9f5c004..0c2bf93 100644 (file)
--- a/target/linux/ifxmips/files/drivers/char/ifxmips_ssc.c
+++ b/target/linux/ifxmips/files/drivers/char/ifxmips_ssc.c
@@ -58,16 +58,6 @@
 #include <asm/ifxmips/ifx_ssc_defines.h>
 #include <asm/ifxmips/ifx_ssc.h>
 
 #include <asm/ifxmips/ifx_ssc_defines.h>
 #include <asm/ifxmips/ifx_ssc.h>
 

-#ifdef SSC_FRAME_INT_ENABLE
-#undef SSC_FRAME_INT_ENABLE
-#endif
-
-#define not_yet
-
-#define SPI_VINETIC
-
-
-

 /* allow the user to set the major device number */
 static int maj = 0;
 
 /* allow the user to set the major device number */
 static int maj = 0;
 


@@ -78,15 +68,6 @@ static int maj = 0;
  */
 static struct ifx_ssc_port *isp;
 
  */
 static struct ifx_ssc_port *isp;
 

-/* prototypes for fops */
-static ssize_t ifx_ssc_read (struct file *, char *, size_t, loff_t *);
-static ssize_t ifx_ssc_write (struct file *, const char *, size_t, loff_t *);
-//static unsigned int ifx_ssc_poll(struct file *, struct poll_table_struct *);
-int ifx_ssc_ioctl (struct inode *, struct file *, unsigned int,
-                  unsigned long);
-int ifx_ssc_open (struct inode *, struct file *);
-int ifx_ssc_close (struct inode *, struct file *);
-

 /* other forward declarations */
 static unsigned int ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info);
 static void tx_int (struct ifx_ssc_port *);
 /* other forward declarations */
 static unsigned int ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info);
 static void tx_int (struct ifx_ssc_port *);


@@ -94,15 +75,6 @@ static void tx_int (struct ifx_ssc_port *);
 extern unsigned int ifxmips_get_fpi_hz (void);
 extern void mask_and_ack_ifxmips_irq (unsigned int irq_nr);
 
 extern unsigned int ifxmips_get_fpi_hz (void);
 extern void mask_and_ack_ifxmips_irq (unsigned int irq_nr);
 

-static struct file_operations ifx_ssc_fops = {
-      .owner = THIS_MODULE,
-      .read = ifx_ssc_read,
-      .write = ifx_ssc_write,
-      .ioctl = ifx_ssc_ioctl,
-      .open = ifx_ssc_open,
-      .release = ifx_ssc_close,
-};
-

 static inline unsigned int
 ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info)
 {
 static inline unsigned int
 ifx_ssc_get_kernel_clk (struct ifx_ssc_port *info)
 {


@@ -203,7 +175,7 @@ rx_int (struct ifx_ssc_port *info)
        // check if transfer is complete
        if (info->rxbuf_ptr >= info->rxbuf_end)
        {
        // check if transfer is complete
        if (info->rxbuf_ptr >= info->rxbuf_end)
        {

-               disable_irq(info->rxirq);
+               disable_irq(IFXMIPS_SSC_RIR);

                wake_up_interruptible (&info->rwait);
        } else if ((info->opts.modeRxTx == IFX_SSC_MODE_RX) && (readl(IFXMIPS_SSC_RXCNT) == 0))
        {
                wake_up_interruptible (&info->rwait);
        } else if ((info->opts.modeRxTx == IFX_SSC_MODE_RX) && (readl(IFXMIPS_SSC_RXCNT) == 0))
        {


@@ -261,7 +233,7 @@ tx_int (struct ifx_ssc_port *info)
        // check if transmission complete
        if (info->txbuf_ptr >= info->txbuf_end)
        {
        // check if transmission complete
        if (info->txbuf_ptr >= info->txbuf_end)
        {

-               disable_irq(info->txirq);
+               disable_irq(IFXMIPS_SSC_TIR);

                kfree (info->txbuf);
                info->txbuf = NULL;
        }
                kfree (info->txbuf);
                info->txbuf = NULL;
        }


@@ -338,9 +310,9 @@ ifx_ssc_abort (struct ifx_ssc_port *info)
 
        local_irq_save (flags);
 
 
        local_irq_save (flags);
 

-       disable_irq(info->rxirq);
-       disable_irq(info->txirq);
-       disable_irq(info->errirq);
+       disable_irq(IFXMIPS_SSC_RIR);
+       disable_irq(IFXMIPS_SSC_TIR);
+       disable_irq(IFXMIPS_SSC_EIR);

 
        local_irq_restore (flags);
 
 
        local_irq_restore (flags);
 


@@ -368,9 +340,9 @@ ifx_ssc_abort (struct ifx_ssc_port *info)
                wake_up_interruptible (&info->rwait);
 
        // clear pending int's 
                wake_up_interruptible (&info->rwait);
 
        // clear pending int's 

-       mask_and_ack_ifxmips_irq(info->rxirq);
-       mask_and_ack_ifxmips_irq(info->txirq);
-       mask_and_ack_ifxmips_irq(info->errirq);
+       mask_and_ack_ifxmips_irq(IFXMIPS_SSC_RIR);
+       mask_and_ack_ifxmips_irq(IFXMIPS_SSC_TIR);
+       mask_and_ack_ifxmips_irq(IFXMIPS_SSC_EIR);

 
        // clear error flags
        writel(IFX_SSC_WHBSTATE_CLR_ALL_ERROR, IFXMIPS_SSC_WHBSTATE);
 
        // clear error flags
        writel(IFX_SSC_WHBSTATE_CLR_ALL_ERROR, IFXMIPS_SSC_WHBSTATE);


@@ -396,7 +368,6 @@ ifx_ssc_open (struct inode *inode, struct file *filp)
                line = (int) inode;
        } else {
                line = MINOR (filp->f_dentry->d_inode->i_rdev);
                line = (int) inode;
        } else {
                line = MINOR (filp->f_dentry->d_inode->i_rdev);

-               filp->f_op = &ifx_ssc_fops;

        }
 
        /* don't open more minor devices than we can support */
        }
 
        /* don't open more minor devices than we can support */


@@ -410,9 +381,9 @@ ifx_ssc_open (struct inode *inode, struct file *filp)
                return -EBUSY;
        info->port_is_open++;
 
                return -EBUSY;
        info->port_is_open++;
 

-       disable_irq(info->rxirq);
-       disable_irq(info->txirq);
-       disable_irq(info->errirq);
+       disable_irq(IFXMIPS_SSC_RIR);
+       disable_irq(IFXMIPS_SSC_TIR);
+       disable_irq(IFXMIPS_SSC_EIR);

 
        /* Flush and enable TX/RX FIFO */
        writel((IFX_SSC_DEF_TXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_FLUSH | IFX_SSC_XFCON_FIFO_ENABLE, IFXMIPS_SSC_TXFCON);
 
        /* Flush and enable TX/RX FIFO */
        writel((IFX_SSC_DEF_TXFIFO_FL << IFX_SSC_XFCON_ITL_OFFSET) | IFX_SSC_XFCON_FIFO_FLUSH | IFX_SSC_XFCON_FIFO_ENABLE, IFXMIPS_SSC_TXFCON);


@@ -426,9 +397,9 @@ ifx_ssc_open (struct inode *inode, struct file *filp)
        writel(IFX_SSC_WHBSTATE_CLR_ALL_ERROR, IFXMIPS_SSC_WHBSTATE);
 
        // clear pending interrupts
        writel(IFX_SSC_WHBSTATE_CLR_ALL_ERROR, IFXMIPS_SSC_WHBSTATE);
 
        // clear pending interrupts

-       mask_and_ack_ifxmips_irq(info->rxirq);
-       mask_and_ack_ifxmips_irq(info->txirq);
-       mask_and_ack_ifxmips_irq(info->errirq);
+       mask_and_ack_ifxmips_irq(IFXMIPS_SSC_RIR);
+       mask_and_ack_ifxmips_irq(IFXMIPS_SSC_TIR);
+       mask_and_ack_ifxmips_irq(IFXMIPS_SSC_EIR);

 
        writel(IFX_SSC_WHBSTATE_SET_ENABLE, IFXMIPS_SSC_WHBSTATE);
 
 
        writel(IFX_SSC_WHBSTATE_SET_ENABLE, IFXMIPS_SSC_WHBSTATE);
 


@@ -518,14 +489,14 @@ ifx_ssc_read_helper (struct ifx_ssc_port *info, char *buf, size_t len, int from_
                tx_int (info);
 
                if (info->txbuf_ptr < info->txbuf_end)
                tx_int (info);
 
                if (info->txbuf_ptr < info->txbuf_end)

-                       enable_irq(info->txirq);
+                       enable_irq(IFXMIPS_SSC_TIR);

 
 

-               enable_irq(info->rxirq);
+               enable_irq(IFXMIPS_SSC_RIR);

        } else {
                local_irq_restore(flags);
                if (readl(IFXMIPS_SSC_RXCNT) & IFX_SSC_RXCNT_TODO_MASK)
                        return -EBUSY;
        } else {
                local_irq_restore(flags);
                if (readl(IFXMIPS_SSC_RXCNT) & IFX_SSC_RXCNT_TODO_MASK)
                        return -EBUSY;

-               enable_irq(info->rxirq);
+               enable_irq(IFXMIPS_SSC_RIR);

                if (len < IFX_SSC_RXREQ_BLOCK_SIZE)
                        writel(len << IFX_SSC_RXREQ_RXCOUNT_OFFSET, IFXMIPS_SSC_RXREQ);
                else
                if (len < IFX_SSC_RXREQ_BLOCK_SIZE)
                        writel(len << IFX_SSC_RXREQ_RXCOUNT_OFFSET, IFXMIPS_SSC_RXREQ);
                else


@@ -574,7 +545,7 @@ ifx_ssc_write_helper (struct ifx_ssc_port *info, const char *buf,
                tx_int (info);
                if (info->txbuf_ptr < info->txbuf_end)
                {
                tx_int (info);
                if (info->txbuf_ptr < info->txbuf_end)
                {

-                       enable_irq(info->txirq);
+                       enable_irq(IFXMIPS_SSC_TIR);

                }
        }
 
                }
        }
 


@@ -611,7 +582,7 @@ ifx_ssc_kread (int port, char *kbuf, size_t len)
        ret_val = ifx_ssc_read_helper_poll (info, kbuf, len, 1);
        info->rxbuf = NULL;
 
        ret_val = ifx_ssc_read_helper_poll (info, kbuf, len, 1);
        info->rxbuf = NULL;
 

-       disable_irq(info->rxirq);
+       disable_irq(IFXMIPS_SSC_RIR);

 
        return ret_val;
 }
 
        return ret_val;
 }


@@ -667,7 +638,7 @@ ifx_ssc_read (struct file *filp, char *ubuf, size_t len, loff_t * off)
        if (copy_to_user ((void *) ubuf, info->rxbuf, ret_val) != 0)
                ret_val = -EFAULT;
 
        if (copy_to_user ((void *) ubuf, info->rxbuf, ret_val) != 0)
                ret_val = -EFAULT;
 

-       disable_irq(info->rxirq);
+       disable_irq(IFXMIPS_SSC_RIR);

 
        kfree (info->rxbuf);
        info->rxbuf = NULL;
 
        kfree (info->rxbuf);
        info->rxbuf = NULL;


@@ -1161,6 +1132,15 @@ ifx_ssc_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigne
 }
 EXPORT_SYMBOL(ifx_ssc_ioctl);
 
 }
 EXPORT_SYMBOL(ifx_ssc_ioctl);
 

+static struct file_operations ifx_ssc_fops = {
+      .owner = THIS_MODULE,
+      .read = ifx_ssc_read,
+      .write = ifx_ssc_write,
+      .ioctl = ifx_ssc_ioctl,
+      .open = ifx_ssc_open,
+      .release = ifx_ssc_close,
+};
+

 int __init
 ifx_ssc_init (void)
 {
 int __init
 ifx_ssc_init (void)
 {


@@ -1227,9 +1207,6 @@ ifx_ssc_init (void)
                /* values specific to SSC1 */
                if (i == 0) {
                        info->mapbase = IFXMIPS_SSC_BASE_ADDR;
                /* values specific to SSC1 */
                if (i == 0) {
                        info->mapbase = IFXMIPS_SSC_BASE_ADDR;

-                       info->txirq = IFXMIPS_SSC_TIR;
-                       info->rxirq = IFXMIPS_SSC_RIR;
-                       info->errirq = IFXMIPS_SSC_EIR;

                }
 
                writel(IFX_SSC_DEF_RMC << IFX_CLC_RUN_DIVIDER_OFFSET, IFXMIPS_SSC_CLC);
                }
 
                writel(IFX_SSC_DEF_RMC << IFX_CLC_RUN_DIVIDER_OFFSET, IFXMIPS_SSC_CLC);


@@ -1241,34 +1218,34 @@ ifx_ssc_init (void)
                // init serial framing register
                writel(IFX_SSC_DEF_SFCON, IFXMIPS_SSC_SFCON);
 
                // init serial framing register
                writel(IFX_SSC_DEF_SFCON, IFXMIPS_SSC_SFCON);
 

-               ret_val = request_irq(info->txirq, ifx_ssc_tx_int, SA_INTERRUPT, "ifx_ssc_tx", info);
+               ret_val = request_irq(IFXMIPS_SSC_TIR, ifx_ssc_tx_int, IRQF_DISABLED, "ifx_ssc_tx", info);

                if (ret_val)
                {
                if (ret_val)
                {

-                       printk("%s: unable to get irq %d\n", __func__, info->txirq);
+                       printk("%s: unable to get irq %d\n", __func__, IFXMIPS_SSC_TIR);

                        local_irq_restore(flags);
                        goto errout;
                }
 
                        local_irq_restore(flags);
                        goto errout;
                }
 

-               ret_val = request_irq(info->rxirq, ifx_ssc_rx_int, SA_INTERRUPT, "ifx_ssc_rx", info);
+               ret_val = request_irq(IFXMIPS_SSC_RIR, ifx_ssc_rx_int, IRQF_DISABLED, "ifx_ssc_rx", info);

                if (ret_val)
                {
                if (ret_val)
                {

-                       printk ("%s: unable to get irq %d\n", __func__, info->rxirq);
+                       printk ("%s: unable to get irq %d\n", __func__, IFXMIPS_SSC_RIR);

                        local_irq_restore (flags);
                        goto irqerr;
                }
 
                        local_irq_restore (flags);
                        goto irqerr;
                }
 

-               ret_val = request_irq(info->errirq, ifx_ssc_err_int, SA_INTERRUPT,"ifx_ssc_err", info);
+               ret_val = request_irq(IFXMIPS_SSC_EIR, ifx_ssc_err_int, IRQF_DISABLED, "ifx_ssc_err", info);

                if (ret_val)
                {
                if (ret_val)
                {

-                       printk ("%s: unable to get irq %d\n", __func__, info->errirq);
+                       printk ("%s: unable to get irq %d\n", __func__, IFXMIPS_SSC_EIR);

                        local_irq_restore (flags);
                        goto irqerr;
                }
                writel(IFX_SSC_DEF_IRNEN, IFXMIPS_SSC_IRN);
 
                        local_irq_restore (flags);
                        goto irqerr;
                }
                writel(IFX_SSC_DEF_IRNEN, IFXMIPS_SSC_IRN);
 

-               enable_irq(info->txirq);
-               enable_irq(info->rxirq);
-               enable_irq(info->errirq);
+               //enable_irq(IFXMIPS_SSC_TIR);
+               //enable_irq(IFXMIPS_SSC_RIR);
+               //enable_irq(IFXMIPS_SSC_EIR);

 
                local_irq_restore (flags);
        }
 
                local_irq_restore (flags);
        }


@@ -1286,9 +1263,9 @@ ifx_ssc_init (void)
        return 0;
 
 irqerr:
        return 0;
 
 irqerr:

-       free_irq(isp[0].txirq, &isp[0]);
-       free_irq(isp[0].rxirq, &isp[0]);
-       free_irq(isp[0].errirq, &isp[0]);
+       free_irq(IFXMIPS_SSC_TIR, &isp[0]);
+       free_irq(IFXMIPS_SSC_RIR, &isp[0]);
+       free_irq(IFXMIPS_SSC_EIR, &isp[0]);

 errout:
        kfree (isp);
        return (ret_val);
 errout:
        kfree (isp);
        return (ret_val);


@@ -1301,9 +1278,9 @@ ifx_ssc_cleanup_module (void)
 
        for (i = 0; i < PORT_CNT; i++) {
                writel(IFX_SSC_WHBSTATE_CLR_ENABLE, IFXMIPS_SSC_WHBSTATE);
 
        for (i = 0; i < PORT_CNT; i++) {
                writel(IFX_SSC_WHBSTATE_CLR_ENABLE, IFXMIPS_SSC_WHBSTATE);

-               free_irq(isp[i].txirq, &isp[i]);
-               free_irq(isp[i].rxirq, &isp[i]);
-               free_irq(isp[i].errirq, &isp[i]);
+               free_irq(IFXMIPS_SSC_TIR, &isp[i]);
+               free_irq(IFXMIPS_SSC_RIR, &isp[i]);
+               free_irq(IFXMIPS_SSC_EIR, &isp[i]);

        }
        kfree (isp);
 }
        }
        kfree (isp);
 }