[linuxtv-commits] [hg:v4l-dvb] Disable PLL Loop while tuning

[Patch from Ales Jurik]

The patch number 9470 was added via Manu Abraham <[EMAIL PROTECTED]>
to http://linuxtv.org/hg/v4l-dvb master development tree.

Kernel patches in this development tree may be modified to be backward
compatible with older kernels. Compatibility modifications will be
removed before inclusion into the mainstream Kernel

If anyone has any objections, please let us know by sending a message to:
        [EMAIL PROTECTED]

------

From: Ales Jurik  <[EMAIL PROTECTED]>
Disable PLL Loop while tuning


Signed-off-by: Ales Jurik <[EMAIL PROTECTED]>
Signed-off-by: Manu Abraham <[EMAIL PROTECTED]>


---

 linux/drivers/media/dvb/frontends/stb6100.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff -r 73efe37a69d7 -r 02bc4a7d7cb2 linux/drivers/media/dvb/frontends/stb6100.c
--- a/linux/drivers/media/dvb/frontends/stb6100.c       Mon Oct 27 01:28:52 
2008 +0400
+++ b/linux/drivers/media/dvb/frontends/stb6100.c       Mon Oct 27 01:45:59 
2008 +0400
@@ -326,6 +326,13 @@ static int stb6100_set_frequency(struct 
                fe->ops.get_frontend(fe, &p);
        }
        srate = p.u.qpsk.symbol_rate;
+
+       regs[STB6100_DLB] = 0xdc;
+       /* Disable LPEN */
+       regs[STB6100_LPEN] &= ~STB6100_LPEN_LPEN; /* PLL Loop disabled */
+
+       if ((rc = stb6100_write_regs(state, regs)) < 0)
+               return rc;
 
        /* Baseband gain.       */
        if (srate >= 15000000)
@@ -383,9 +390,11 @@ static int stb6100_set_frequency(struct 
        /* Power up. */
        regs[STB6100_LPEN] |= STB6100_LPEN_SYNP | STB6100_LPEN_OSCP | 
STB6100_LPEN_BEN;
 
+       msleep(2);
        if ((rc = stb6100_write_regs(state, regs)) < 0)
                return rc;
 
+       msleep(2);
        regs[STB6100_LPEN] |= STB6100_LPEN_LPEN;        /* PLL loop enabled     
        */
        if ((rc = stb6100_write_reg(state, STB6100_LPEN, regs[STB6100_LPEN])) < 
0)
                return rc;
@@ -400,7 +409,8 @@ static int stb6100_set_frequency(struct 
        if ((rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO])) < 0)
                return rc;
        regs[STB6100_FCCK] &= ~STB6100_FCCK_FCCK;       /* LPF BW clock 
disabled        */
-       if ((rc = stb6100_write_reg(state, STB6100_FCCK, regs[STB6100_FCCK])) < 
0)
+       stb6100_normalise_regs(regs);
+       if ((rc = stb6100_write_reg_range(state, &regs[1], 1, STB6100_NUMREGS - 
3)) < 0)
                return rc;
 
        msleep(30);


---

Patch is available at: 
http://linuxtv.org/hg/v4l-dvb/rev/02bc4a7d7cb2f9203676370306b06078289cffa5

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