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Date: Wed, 22 Jul 2015 14:10:40 -0300
From: Mauro Carvalho Chehab <mchehab@....samsung.com>
To: Peter Griffin <peter.griffin@...aro.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
srinivas.kandagatla@...il.com, maxime.coquelin@...com,
patrice.chotard@...com, lee.jones@...aro.org,
hugues.fruchet@...com, linux-media@...r.kernel.org,
devicetree@...r.kernel.org
Subject: Re: [PATCH 02/12] [media] dvb-pll: Add support for THOMSON DTT7546X
tuner.
Em Wed, 24 Jun 2015 16:11:00 +0100
Peter Griffin <peter.griffin@...aro.org> escreveu:
> This is used in conjunction with the STV0367 demodulator on
> the STV0367-NIM-V1.0 NIM card which can be used with the STi
> STB SoC's.
>
> This tuner has a fifth register, so some changes have been made
> to accommodate this.
>
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
> ---
> drivers/media/dvb-frontends/dvb-pll.c | 74 +++++++++++++++++++++++++++++------
> drivers/media/dvb-frontends/dvb-pll.h | 1 +
> 2 files changed, 64 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/media/dvb-frontends/dvb-pll.c b/drivers/media/dvb-frontends/dvb-pll.c
> index 6d8fe88..f7381c7 100644
> --- a/drivers/media/dvb-frontends/dvb-pll.c
> +++ b/drivers/media/dvb-frontends/dvb-pll.c
> @@ -141,6 +141,35 @@ static struct dvb_pll_desc dvb_pll_thomson_dtt7520x = {
> },
> };
>
> +static void thomson_dtt7546x_bw(struct dvb_frontend *fe, u8 *buf)
> +{
> + /* set CB2 reg - set ATC, XTO */
> + buf[4] = 0xc3;
> +}
> +
> +static struct dvb_pll_desc dvb_pll_thomson_dtt7546x = {
> + .name = "Thomson dtt7546x",
> + .min = 44250000,
> + .max = 863250000,
> + .set = thomson_dtt7546x_bw,
> + .iffreq= 36166667,
Whitespace is missing. Please check the patchs with scripts/checkpatch.pl.
> + .count = 12,
> + .entries = {
> + { 121000000, 166667, 0x88, 0x01 },
> + { 141000000, 166667, 0x88, 0x41 },
> + { 166000000, 166667, 0x88, 0x81 },
> + { 182000000, 166667, 0x88, 0xc1 },
> + { 286000000, 166667, 0x88, 0x02 },
> + { 386000000, 166667, 0x88, 0x42 },
> + { 446000000, 166667, 0x88, 0x82 },
> + { 466000000, 166667, 0x88, 0xc2 },
> + { 506000000, 166667, 0x88, 0x08 },
> + { 761000000, 166667, 0x88, 0x48 },
> + { 846000000, 166667, 0x88, 0x88 },
> + { 905000000, 166667, 0x88, 0xc8 },
> + },
> +};
> +
> static struct dvb_pll_desc dvb_pll_lg_z201 = {
> .name = "LG z201",
> .min = 174000000,
> @@ -537,6 +566,7 @@ static struct dvb_pll_desc dvb_pll_alps_tdee4 = {
> static struct dvb_pll_desc *pll_list[] = {
> [DVB_PLL_UNDEFINED] = NULL,
> [DVB_PLL_THOMSON_DTT7579] = &dvb_pll_thomson_dtt7579,
> + [DVB_PLL_THOMSON_DTT7546X] = &dvb_pll_thomson_dtt7546x,
> [DVB_PLL_THOMSON_DTT759X] = &dvb_pll_thomson_dtt759x,
> [DVB_PLL_THOMSON_DTT7520X] = &dvb_pll_thomson_dtt7520x,
> [DVB_PLL_LG_Z201] = &dvb_pll_lg_z201,
> @@ -561,7 +591,7 @@ static struct dvb_pll_desc *pll_list[] = {
> /* code */
>
> static int dvb_pll_configure(struct dvb_frontend *fe, u8 *buf,
> - const u32 frequency)
> + const u32 frequency, const u32 len)
> {
> struct dvb_pll_priv *priv = fe->tuner_priv;
> struct dvb_pll_desc *desc = priv->pll_desc;
> @@ -593,11 +623,15 @@ static int dvb_pll_configure(struct dvb_frontend *fe, u8 *buf,
> if (desc->set)
> desc->set(fe, buf);
>
> - if (debug)
> - printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
> - desc->name, div, buf[0], buf[1], buf[2], buf[3]);
> + if (debug) {
> + printk(KERN_DEBUG "pll: %s: div=%d | buf=", desc->name, div);
> + for (i = 0; i < len; i++)
> + printk(KERN_DEBUG "0x%02x,", buf[i]);
>
> - // calculate the frequency we set it to
> + printk(KERN_DEBUG "\n");
> + }
Please use, instead, the Documentation/printk-formats.txt macros to
print an hex buffer:
"Raw buffer as a hex string:
%*ph 00 01 02 ... 3f
%*phC 00:01:02: ... :3f
%*phD 00-01-02- ... -3f
%*phN 000102 ... 3f"
> +
> + /* calculate the frequency we set it to */
> return (div * desc->entries[i].stepsize) - desc->iffreq;
> }
>
> @@ -634,21 +668,39 @@ static int dvb_pll_sleep(struct dvb_frontend *fe)
> return -EINVAL;
> }
>
> +static int dvb_pll_get_num_regs(struct dvb_pll_priv *priv)
> +{
> + int num_regs = 4;
> +
> + if (strncmp(priv->pll_desc->name, "Thomson dtt7546x", 16) == 0)
> + num_regs = 5;
> +
> + return num_regs;
> +}
> +
> static int dvb_pll_set_params(struct dvb_frontend *fe)
> {
> struct dtv_frontend_properties *c = &fe->dtv_property_cache;
> struct dvb_pll_priv *priv = fe->tuner_priv;
> - u8 buf[4];
> - struct i2c_msg msg =
> - { .addr = priv->pll_i2c_address, .flags = 0,
> - .buf = buf, .len = sizeof(buf) };
> + struct i2c_msg msg;
> + u8 *bufp;
> int result;
> u32 frequency = 0;
>
> + bufp = kzalloc(dvb_pll_get_num_regs(priv), GFP_KERNEL);
> +
> + if (!bufp)
> + return -ENOMEM;
> +
> + msg.addr = priv->pll_i2c_address;
> + msg.flags = 0;
> + msg.buf = bufp;
> + msg.len = dvb_pll_get_num_regs(priv);
> +
> if (priv->i2c == NULL)
> return -EINVAL;
>
> - result = dvb_pll_configure(fe, buf, c->frequency);
> + result = dvb_pll_configure(fe, bufp, c->frequency, msg.len);
> if (result < 0)
> return result;
> else
> @@ -677,7 +729,7 @@ static int dvb_pll_calc_regs(struct dvb_frontend *fe,
> if (buf_len < 5)
> return -EINVAL;
>
> - result = dvb_pll_configure(fe, buf + 1, c->frequency);
> + result = dvb_pll_configure(fe, buf + 1, c->frequency, buf_len - 1);
> if (result < 0)
> return result;
> else
> diff --git a/drivers/media/dvb-frontends/dvb-pll.h b/drivers/media/dvb-frontends/dvb-pll.h
> index bf9602a..f523f42 100644
> --- a/drivers/media/dvb-frontends/dvb-pll.h
> +++ b/drivers/media/dvb-frontends/dvb-pll.h
> @@ -28,6 +28,7 @@
> #define DVB_PLL_SAMSUNG_TBMU24112 17
> #define DVB_PLL_TDEE4 18
> #define DVB_PLL_THOMSON_DTT7520X 19
> +#define DVB_PLL_THOMSON_DTT7546X 20
>
> /**
> * Attach a dvb-pll to the supplied frontend structure.
--
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