ALSA: lx6464es - cleanup of rmh message bus function

the rmh bus is not used asynchronously, so it is safe to remove the
specific code pieces.

Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 1 insertions, 98 deletions

diff --git a/sound/pci/lx6464es/lx6464es.h b/sound/pci/lx6464es/lx6464es.h
index 012c010c8c89..16442dad58d1 100644
--- a/sound/pci/lx6464es/lx6464es.h
+++ b/sound/pci/lx6464es/lx6464es.h
@@ -86,7 +86,6 @@ struct lx6464es {
 
         /* messaging */
         spinlock_t              msg_lock;          /* message spinlock */
-        atomic_t                send_message_locked;
         struct lx_rmh           rmh;
 
         /* configuration */
diff --git a/sound/pci/lx6464es/lx_core.c b/sound/pci/lx6464es/lx_core.c
index 5812780d6e89..3086b751da4a 100644
--- a/sound/pci/lx6464es/lx_core.c
+++ b/sound/pci/lx6464es/lx_core.c
@@ -314,98 +314,6 @@ static inline void lx_message_dump(struct lx_rmh *rmh)
 #define XILINX_POLL_NO_SLEEP    100
 #define XILINX_POLL_ITERATIONS  150
 
-#if 0 /* not used now */
-static int lx_message_send(struct lx6464es *chip, struct lx_rmh *rmh)
-{
-        u32 reg = ED_DSP_TIMED_OUT;
-        int dwloop;
-        int answer_received;
-
-        if (lx_dsp_reg_read(chip, eReg_CSM) & (Reg_CSM_MC | Reg_CSM_MR)) {
-                snd_printk(KERN_ERR LXP "PIOSendMessage eReg_CSM %x\n", reg);
-                return -EBUSY;
-        }
-
-        /* write command */
-        lx_dsp_reg_writebuf(chip, eReg_CRM1, rmh->cmd, rmh->cmd_len);
-
-        snd_BUG_ON(atomic_read(&chip->send_message_locked) != 0);
-        atomic_set(&chip->send_message_locked, 1);
-
-        /* MicoBlaze gogogo */
-        lx_dsp_reg_write(chip, eReg_CSM, Reg_CSM_MC);
-
-        /* wait for interrupt to answer */
-        for (dwloop = 0; dwloop != XILINX_TIMEOUT_MS; ++dwloop) {
-                answer_received = atomic_read(&chip->send_message_locked);
-                if (answer_received == 0)
-                        break;
-                msleep(1);
-        }
-
-        if (answer_received == 0) {
-                /* in Debug mode verify Reg_CSM_MR */
-                snd_BUG_ON(!(lx_dsp_reg_read(chip, eReg_CSM) & Reg_CSM_MR));
-
-                /* command finished, read status */
-                if (rmh->dsp_stat == 0)
-                        reg = lx_dsp_reg_read(chip, eReg_CRM1);
-                else
-                        reg = 0;
-        } else {
-                int i;
-                snd_printk(KERN_WARNING LXP "TIMEOUT lx_message_send! "
-                           "Interrupts disabled?\n");
-
-                /* attente bit Reg_CSM_MR */
-                for (i = 0; i != XILINX_POLL_ITERATIONS; i++) {
-                        if ((lx_dsp_reg_read(chip, eReg_CSM) & Reg_CSM_MR)) {
-                                if (rmh->dsp_stat == 0)
-                                        reg = lx_dsp_reg_read(chip, eReg_CRM1);
-                                else
-                                        reg = 0;
-                                goto polling_successful;
-                        }
-
-                        if (i > XILINX_POLL_NO_SLEEP)
-                                msleep(1);
-                }
-                snd_printk(KERN_WARNING LXP "TIMEOUT lx_message_send! "
-                           "polling failed\n");
-
-polling_successful:
-                atomic_set(&chip->send_message_locked, 0);
-        }
-
-        if ((reg & ERROR_VALUE) == 0) {
-                /* read response */
-                if (rmh->stat_len) {
-                        snd_BUG_ON(rmh->stat_len >= (REG_CRM_NUMBER-1));
-
-                        lx_dsp_reg_readbuf(chip, eReg_CRM2, rmh->stat,
-                                           rmh->stat_len);
-                }
-        } else
-                snd_printk(KERN_WARNING LXP "lx_message_send: error_value %x\n",
-                           reg);
-
-        /* clear Reg_CSM_MR */
-        lx_dsp_reg_write(chip, eReg_CSM, 0);
-
-        switch (reg) {
-        case ED_DSP_TIMED_OUT:
-                snd_printk(KERN_WARNING LXP "lx_message_send: dsp timeout\n");
-                return -ETIMEDOUT;
-
-        case ED_DSP_CRASHED:
-                snd_printk(KERN_WARNING LXP "lx_message_send: dsp crashed\n");
-                return -EAGAIN;
-        }
-
-        lx_message_dump(rmh);
-        return 0;
-}
-#endif /* not used now */
 
 static int lx_message_send_atomic(struct lx6464es *chip, struct lx_rmh *rmh)
 {
@@ -423,7 +331,7 @@ static int lx_message_send_atomic(struct lx6464es *chip, struct lx_rmh *rmh)
         /* MicoBlaze gogogo */
         lx_dsp_reg_write(chip, eReg_CSM, Reg_CSM_MC);
 
-        /* wait for interrupt to answer */
+        /* wait for device to answer */
         for (dwloop = 0; dwloop != XILINX_TIMEOUT_MS * 1000; ++dwloop) {
                 if (lx_dsp_reg_read(chip, eReg_CSM) & Reg_CSM_MR) {
                         if (rmh->dsp_stat == 0)
@@ -1175,10 +1083,6 @@ static int lx_interrupt_ack(struct lx6464es *chip, u32 *r_irqsrc,
                 *r_async_escmd = 1;
         }
 
-        if (irqsrc & MASK_SYS_STATUS_CMD_DONE)
-                /* xilinx command notification */
-                atomic_set(&chip->send_message_locked, 0);
-
         if (irq_async) {
                 /* snd_printd("interrupt: async event pending\n"); */
                 *r_async_pending = 1;