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Commit 9b22edd4 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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V4L/DVB: af9013: optimize code size 



Optimize af9013_set_coeff(). Move configuration values to own table.

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent d3bb73de

drivers/media/dvb/frontends/af9013.c

+36 −158
Original line number Diff line number Diff line
@@ -220,173 +220,50 @@ static u32 af913_div(u32 a, u32 b, u32 x) 


static int af9013_set_coeff(struct af9013_state *state, fe_bandwidth_t bw)

{

	int ret = 0;

	u8 i = 0;

	int ret, i, found;

	u8 buf[24];

	u32 uninitialized_var(ns_coeff1_2048nu);

	u32 uninitialized_var(ns_coeff1_8191nu);

	u32 uninitialized_var(ns_coeff1_8192nu);

	u32 uninitialized_var(ns_coeff1_8193nu);

	u32 uninitialized_var(ns_coeff2_2k);

	u32 uninitialized_var(ns_coeff2_8k);



	deb_info("%s: adc_clock:%d bw:%d\n", __func__,

		state->config.adc_clock, bw);



	switch (state->config.adc_clock) {

	case 28800: /* 28.800 MHz */

		switch (bw) {

		case BANDWIDTH_6_MHZ:

			ns_coeff1_2048nu = 0x01e79e7a;

			ns_coeff1_8191nu = 0x0079eb6e;

			ns_coeff1_8192nu = 0x0079e79e;

			ns_coeff1_8193nu = 0x0079e3cf;

			ns_coeff2_2k     = 0x00f3cf3d;

			ns_coeff2_8k     = 0x003cf3cf;

			break;

		case BANDWIDTH_7_MHZ:

			ns_coeff1_2048nu = 0x0238e38e;

			ns_coeff1_8191nu = 0x008e3d55;

			ns_coeff1_8192nu = 0x008e38e4;

			ns_coeff1_8193nu = 0x008e3472;

			ns_coeff2_2k     = 0x011c71c7;

			ns_coeff2_8k     = 0x00471c72;

			break;

		case BANDWIDTH_8_MHZ:

			ns_coeff1_2048nu = 0x028a28a3;

			ns_coeff1_8191nu = 0x00a28f3d;

			ns_coeff1_8192nu = 0x00a28a29;

			ns_coeff1_8193nu = 0x00a28514;

			ns_coeff2_2k     = 0x01451451;

			ns_coeff2_8k     = 0x00514514;

			break;

		default:

			ret = -EINVAL;

		}

	/* lookup coeff from table */

	for (i = 0, found = 0; i < ARRAY_SIZE(coeff_table); i++) {

		if (coeff_table[i].adc_clock == state->config.adc_clock &&

			coeff_table[i].bw == bw) {

			found = 1;

			break;

	case 20480: /* 20.480 MHz */

		switch (bw) {

		case BANDWIDTH_6_MHZ:

			ns_coeff1_2048nu = 0x02adb6dc;

			ns_coeff1_8191nu = 0x00ab7313;

			ns_coeff1_8192nu = 0x00ab6db7;

			ns_coeff1_8193nu = 0x00ab685c;

			ns_coeff2_2k     = 0x0156db6e;

			ns_coeff2_8k     = 0x0055b6dc;

			break;

		case BANDWIDTH_7_MHZ:

			ns_coeff1_2048nu = 0x03200001;

			ns_coeff1_8191nu = 0x00c80640;

			ns_coeff1_8192nu = 0x00c80000;

			ns_coeff1_8193nu = 0x00c7f9c0;

			ns_coeff2_2k     = 0x01900000;

			ns_coeff2_8k     = 0x00640000;

			break;

		case BANDWIDTH_8_MHZ:

			ns_coeff1_2048nu = 0x03924926;

			ns_coeff1_8191nu = 0x00e4996e;

			ns_coeff1_8192nu = 0x00e49249;

			ns_coeff1_8193nu = 0x00e48b25;

			ns_coeff2_2k     = 0x01c92493;

			ns_coeff2_8k     = 0x00724925;

			break;

		default:

			ret = -EINVAL;

		}

		break;

	case 28000: /* 28.000 MHz */

		switch (bw) {

		case BANDWIDTH_6_MHZ:

			ns_coeff1_2048nu = 0x01f58d10;

			ns_coeff1_8191nu = 0x007d672f;

			ns_coeff1_8192nu = 0x007d6344;

			ns_coeff1_8193nu = 0x007d5f59;

			ns_coeff2_2k     = 0x00fac688;

			ns_coeff2_8k     = 0x003eb1a2;

			break;

		case BANDWIDTH_7_MHZ:

			ns_coeff1_2048nu = 0x02492492;

			ns_coeff1_8191nu = 0x00924db7;

			ns_coeff1_8192nu = 0x00924925;

			ns_coeff1_8193nu = 0x00924492;

			ns_coeff2_2k     = 0x01249249;

			ns_coeff2_8k     = 0x00492492;

			break;

		case BANDWIDTH_8_MHZ:

			ns_coeff1_2048nu = 0x029cbc15;

			ns_coeff1_8191nu = 0x00a7343f;

			ns_coeff1_8192nu = 0x00a72f05;

			ns_coeff1_8193nu = 0x00a729cc;

			ns_coeff2_2k     = 0x014e5e0a;

			ns_coeff2_8k     = 0x00539783;

			break;

		default:

			ret = -EINVAL;

	}

		break;

	case 25000: /* 25.000 MHz */

		switch (bw) {

		case BANDWIDTH_6_MHZ:

			ns_coeff1_2048nu = 0x0231bcb5;

			ns_coeff1_8191nu = 0x008c7391;

			ns_coeff1_8192nu = 0x008c6f2d;

			ns_coeff1_8193nu = 0x008c6aca;

			ns_coeff2_2k     = 0x0118de5b;

			ns_coeff2_8k     = 0x00463797;

			break;

		case BANDWIDTH_7_MHZ:

			ns_coeff1_2048nu = 0x028f5c29;

			ns_coeff1_8191nu = 0x00a3dc29;

			ns_coeff1_8192nu = 0x00a3d70a;

			ns_coeff1_8193nu = 0x00a3d1ec;

			ns_coeff2_2k     = 0x0147ae14;

			ns_coeff2_8k     = 0x0051eb85;

			break;

		case BANDWIDTH_8_MHZ:

			ns_coeff1_2048nu = 0x02ecfb9d;

			ns_coeff1_8191nu = 0x00bb44c1;

			ns_coeff1_8192nu = 0x00bb3ee7;

			ns_coeff1_8193nu = 0x00bb390d;

			ns_coeff2_2k     = 0x01767dce;

			ns_coeff2_8k     = 0x005d9f74;

			break;

		default:



	if (!found) {

		err("invalid bw or clock");

		ret = -EINVAL;

		}

		break;

	default:

		err("invalid xtal");

		return -EINVAL;

	}

	if (ret) {

		err("invalid bandwidth");

		return ret;

		goto error;

	}



	buf[i++] = (u8) ((ns_coeff1_2048nu & 0x03000000) >> 24);

	buf[i++] = (u8) ((ns_coeff1_2048nu & 0x00ff0000) >> 16);

	buf[i++] = (u8) ((ns_coeff1_2048nu & 0x0000ff00) >> 8);

	buf[i++] = (u8) ((ns_coeff1_2048nu & 0x000000ff));

	buf[i++] = (u8) ((ns_coeff2_2k     & 0x01c00000) >> 22);

	buf[i++] = (u8) ((ns_coeff2_2k     & 0x003fc000) >> 14);

	buf[i++] = (u8) ((ns_coeff2_2k     & 0x00003fc0) >> 6);

	buf[i++] = (u8) ((ns_coeff2_2k     & 0x0000003f));

	buf[i++] = (u8) ((ns_coeff1_8191nu & 0x03000000) >> 24);

	buf[i++] = (u8) ((ns_coeff1_8191nu & 0x00ffc000) >> 16);

	buf[i++] = (u8) ((ns_coeff1_8191nu & 0x0000ff00) >> 8);

	buf[i++] = (u8) ((ns_coeff1_8191nu & 0x000000ff));

	buf[i++] = (u8) ((ns_coeff1_8192nu & 0x03000000) >> 24);

	buf[i++] = (u8) ((ns_coeff1_8192nu & 0x00ffc000) >> 16);

	buf[i++] = (u8) ((ns_coeff1_8192nu & 0x0000ff00) >> 8);

	buf[i++] = (u8) ((ns_coeff1_8192nu & 0x000000ff));

	buf[i++] = (u8) ((ns_coeff1_8193nu & 0x03000000) >> 24);

	buf[i++] = (u8) ((ns_coeff1_8193nu & 0x00ffc000) >> 16);

	buf[i++] = (u8) ((ns_coeff1_8193nu & 0x0000ff00) >> 8);

	buf[i++] = (u8) ((ns_coeff1_8193nu & 0x000000ff));

	buf[i++] = (u8) ((ns_coeff2_8k     & 0x01c00000) >> 22);

	buf[i++] = (u8) ((ns_coeff2_8k     & 0x003fc000) >> 14);

	buf[i++] = (u8) ((ns_coeff2_8k     & 0x00003fc0) >> 6);

	buf[i++] = (u8) ((ns_coeff2_8k     & 0x0000003f));

	buf[0]  = (u8) ((coeff_table[i].ns_coeff1_2048nu & 0x03000000) >> 24);

	buf[1]  = (u8) ((coeff_table[i].ns_coeff1_2048nu & 0x00ff0000) >> 16);

	buf[2]  = (u8) ((coeff_table[i].ns_coeff1_2048nu & 0x0000ff00) >> 8);

	buf[3]  = (u8) ((coeff_table[i].ns_coeff1_2048nu & 0x000000ff));

	buf[4]  = (u8) ((coeff_table[i].ns_coeff2_2k     & 0x01c00000) >> 22);

	buf[5]  = (u8) ((coeff_table[i].ns_coeff2_2k     & 0x003fc000) >> 14);

	buf[6]  = (u8) ((coeff_table[i].ns_coeff2_2k     & 0x00003fc0) >> 6);

	buf[7]  = (u8) ((coeff_table[i].ns_coeff2_2k     & 0x0000003f));

	buf[8]  = (u8) ((coeff_table[i].ns_coeff1_8191nu & 0x03000000) >> 24);

	buf[9]  = (u8) ((coeff_table[i].ns_coeff1_8191nu & 0x00ffc000) >> 16);

	buf[10] = (u8) ((coeff_table[i].ns_coeff1_8191nu & 0x0000ff00) >> 8);

	buf[11] = (u8) ((coeff_table[i].ns_coeff1_8191nu & 0x000000ff));

	buf[12] = (u8) ((coeff_table[i].ns_coeff1_8192nu & 0x03000000) >> 24);

	buf[13] = (u8) ((coeff_table[i].ns_coeff1_8192nu & 0x00ffc000) >> 16);

	buf[14] = (u8) ((coeff_table[i].ns_coeff1_8192nu & 0x0000ff00) >> 8);

	buf[15] = (u8) ((coeff_table[i].ns_coeff1_8192nu & 0x000000ff));

	buf[16] = (u8) ((coeff_table[i].ns_coeff1_8193nu & 0x03000000) >> 24);

	buf[17] = (u8) ((coeff_table[i].ns_coeff1_8193nu & 0x00ffc000) >> 16);

	buf[18] = (u8) ((coeff_table[i].ns_coeff1_8193nu & 0x0000ff00) >> 8);

	buf[19] = (u8) ((coeff_table[i].ns_coeff1_8193nu & 0x000000ff));

	buf[20] = (u8) ((coeff_table[i].ns_coeff2_8k     & 0x01c00000) >> 22);

	buf[21] = (u8) ((coeff_table[i].ns_coeff2_8k     & 0x003fc000) >> 14);

	buf[22] = (u8) ((coeff_table[i].ns_coeff2_8k     & 0x00003fc0) >> 6);

	buf[23] = (u8) ((coeff_table[i].ns_coeff2_8k     & 0x0000003f));



	deb_info("%s: coeff:", __func__);

	debug_dump(buf, sizeof(buf), deb_info);
@@ -398,6 +275,7 @@ static int af9013_set_coeff(struct af9013_state *state, fe_bandwidth_t bw) 
			break;

	}



error:

	return ret;

}

drivers/media/dvb/frontends/af9013_priv.h

+43 −0
Original line number Diff line number Diff line
@@ -60,6 +60,49 @@ struct snr_table { 
	u8 snr;

};



struct coeff {

	u32 adc_clock;

	fe_bandwidth_t bw;

	u32 ns_coeff1_2048nu;

	u32 ns_coeff1_8191nu;

	u32 ns_coeff1_8192nu;

	u32 ns_coeff1_8193nu;

	u32 ns_coeff2_2k;

	u32 ns_coeff2_8k;

};



/* coeff lookup table */

static struct coeff coeff_table[] = {

	/* 28.800 MHz */

	{ 28800, BANDWIDTH_6_MHZ, 0x01e79e7a, 0x0079eb6e, 0x0079e79e,

		0x0079e3cf, 0x00f3cf3d, 0x003cf3cf },

	{ 28800, BANDWIDTH_7_MHZ, 0x0238e38e, 0x008e3d55, 0x008e38e4,

		0x008e3472, 0x011c71c7, 0x00471c72 },

	{ 28800, BANDWIDTH_8_MHZ, 0x028a28a3, 0x00a28f3d, 0x00a28a29,

		0x00a28514, 0x01451451, 0x00514514 },

	/* 20.480 MHz */

	{ 20480, BANDWIDTH_6_MHZ, 0x02adb6dc, 0x00ab7313, 0x00ab6db7,

		0x00ab685c, 0x0156db6e, 0x0055b6dc },

	{ 20480, BANDWIDTH_7_MHZ, 0x03200001, 0x00c80640, 0x00c80000,

		0x00c7f9c0, 0x01900000, 0x00640000 },

	{ 20480, BANDWIDTH_8_MHZ, 0x03924926, 0x00e4996e, 0x00e49249,

		0x00e48b25, 0x01c92493, 0x00724925 },

	/* 28.000 MHz */

	{ 28000, BANDWIDTH_6_MHZ, 0x01f58d10, 0x007d672f, 0x007d6344,

		0x007d5f59, 0x00fac688, 0x003eb1a2 },

	{ 28000, BANDWIDTH_7_MHZ, 0x02492492, 0x00924db7, 0x00924925,

		0x00924492, 0x01249249, 0x00492492 },

	{ 28000, BANDWIDTH_8_MHZ, 0x029cbc15, 0x00a7343f, 0x00a72f05,

		0x00a729cc, 0x014e5e0a, 0x00539783 },

	/* 25.000 MHz */

	{ 25000, BANDWIDTH_6_MHZ, 0x0231bcb5, 0x008c7391, 0x008c6f2d,

		0x008c6aca, 0x0118de5b, 0x00463797 },

	{ 25000, BANDWIDTH_7_MHZ, 0x028f5c29, 0x00a3dc29, 0x00a3d70a,

		0x00a3d1ec, 0x0147ae14, 0x0051eb85 },

	{ 25000, BANDWIDTH_8_MHZ, 0x02ecfb9d, 0x00bb44c1, 0x00bb3ee7,

		0x00bb390d, 0x01767dce, 0x005d9f74 },

};



/* QPSK SNR lookup table */

static struct snr_table qpsk_snr_table[] = {

	{ 0x0b4771,  0 },