V4L/DVB: Add support for SMT7020 to cx88

This patch adds support for the built-in dvb device
of a Samsung SMT7020s (x86 based STB) to the cx88 family.

Signed-off-by: Dirk Herrendoerfer <d.herrendoerfer@herrendoerfer.name>
Signed-off-by: Helmut Auer <helmut@helmutauer.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 216 insertions, 0 deletions

diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c
index b14296923250..5070deffcfc1 100644
--- a/drivers/media/video/cx88/cx88-dvb.c
+++ b/drivers/media/video/cx88/cx88-dvb.c
@@ -674,6 +674,194 @@ static int cx8802_alloc_frontends(struct cx8802_dev *dev)
         return 0;
 }
 
+
+
+static u8 samsung_smt_7020_inittab[] = {
+             0x01, 0x15,
+             0x02, 0x00,
+             0x03, 0x00,
+             0x04, 0x7D,
+             0x05, 0x0F,
+             0x06, 0x02,
+             0x07, 0x00,
+             0x08, 0x60,
+
+             0x0A, 0xC2,
+             0x0B, 0x00,
+             0x0C, 0x01,
+             0x0D, 0x81,
+             0x0E, 0x44,
+             0x0F, 0x09,
+             0x10, 0x3C,
+             0x11, 0x84,
+             0x12, 0xDA,
+             0x13, 0x99,
+             0x14, 0x8D,
+             0x15, 0xCE,
+             0x16, 0xE8,
+             0x17, 0x43,
+             0x18, 0x1C,
+             0x19, 0x1B,
+             0x1A, 0x1D,
+
+             0x1C, 0x12,
+             0x1D, 0x00,
+             0x1E, 0x00,
+             0x1F, 0x00,
+             0x20, 0x00,
+             0x21, 0x00,
+             0x22, 0x00,
+             0x23, 0x00,
+
+             0x28, 0x02,
+             0x29, 0x28,
+             0x2A, 0x14,
+             0x2B, 0x0F,
+             0x2C, 0x09,
+             0x2D, 0x05,
+
+             0x31, 0x1F,
+             0x32, 0x19,
+             0x33, 0xFC,
+             0x34, 0x13,
+             0xff, 0xff,
+};
+
+
+static int samsung_smt_7020_tuner_set_params(struct dvb_frontend *fe,
+        struct dvb_frontend_parameters *params)
+{
+        struct cx8802_dev *dev = fe->dvb->priv;
+        u8 buf[4];
+        u32 div;
+        struct i2c_msg msg = {
+                .addr = 0x61,
+                .flags = 0,
+                .buf = buf,
+                .len = sizeof(buf) };
+
+        div = params->frequency / 125;
+
+        buf[0] = (div >> 8) & 0x7f;
+        buf[1] = div & 0xff;
+        buf[2] = 0x84;  /* 0xC4 */
+        buf[3] = 0x00;
+
+        if (params->frequency < 1500000)
+                buf[3] |= 0x10;
+
+        if (fe->ops.i2c_gate_ctrl)
+                fe->ops.i2c_gate_ctrl(fe, 1);
+
+        if (i2c_transfer(&dev->core->i2c_adap, &msg, 1) != 1)
+                return -EIO;
+
+        return 0;
+}
+
+static int samsung_smt_7020_set_tone(struct dvb_frontend *fe,
+        fe_sec_tone_mode_t tone)
+{
+        struct cx8802_dev *dev = fe->dvb->priv;
+        struct cx88_core *core = dev->core;
+
+        cx_set(MO_GP0_IO, 0x0800);
+
+        switch (tone) {
+        case SEC_TONE_ON:
+                cx_set(MO_GP0_IO, 0x08);
+                break;
+        case SEC_TONE_OFF:
+                cx_clear(MO_GP0_IO, 0x08);
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+static int samsung_smt_7020_set_voltage(struct dvb_frontend *fe,
+        fe_sec_voltage_t voltage)
+{
+        struct cx8802_dev *dev = fe->dvb->priv;
+        struct cx88_core *core = dev->core;
+
+        u8 data;
+        struct i2c_msg msg = {
+                .addr = 8,
+                .flags = 0,
+                .buf = &data,
+                .len = sizeof(data) };
+
+        cx_set(MO_GP0_IO, 0x8000);
+
+        switch (voltage) {
+        case SEC_VOLTAGE_OFF:
+                break;
+        case SEC_VOLTAGE_13:
+                data = ISL6421_EN1 | ISL6421_LLC1;
+                cx_clear(MO_GP0_IO, 0x80);
+                break;
+        case SEC_VOLTAGE_18:
+                data = ISL6421_EN1 | ISL6421_LLC1 | ISL6421_VSEL1;
+                cx_clear(MO_GP0_IO, 0x80);
+                break;
+        default:
+                return -EINVAL;
+        };
+
+        return (i2c_transfer(&dev->core->i2c_adap, &msg, 1) == 1) ? 0 : -EIO;
+}
+
+static int samsung_smt_7020_stv0299_set_symbol_rate(struct dvb_frontend *fe,
+        u32 srate, u32 ratio)
+{
+        u8 aclk = 0;
+        u8 bclk = 0;
+
+        if (srate < 1500000) {
+                aclk = 0xb7;
+                bclk = 0x47;
+        } else if (srate < 3000000) {
+                aclk = 0xb7;
+                bclk = 0x4b;
+        } else if (srate < 7000000) {
+                aclk = 0xb7;
+                bclk = 0x4f;
+        } else if (srate < 14000000) {
+                aclk = 0xb7;
+                bclk = 0x53;
+        } else if (srate < 30000000) {
+                aclk = 0xb6;
+                bclk = 0x53;
+        } else if (srate < 45000000) {
+                aclk = 0xb4;
+                bclk = 0x51;
+        }
+
+        stv0299_writereg(fe, 0x13, aclk);
+        stv0299_writereg(fe, 0x14, bclk);
+        stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
+        stv0299_writereg(fe, 0x20, (ratio >>  8) & 0xff);
+        stv0299_writereg(fe, 0x21, ratio & 0xf0);
+
+        return 0;
+}
+
+
+static struct stv0299_config samsung_stv0299_config = {
+        .demod_address = 0x68,
+        .inittab = samsung_smt_7020_inittab,
+        .mclk = 88000000UL,
+        .invert = 0,
+        .skip_reinit = 0,
+        .lock_output = STV0299_LOCKOUTPUT_LK,
+        .volt13_op0_op1 = STV0299_VOLT13_OP1,
+        .min_delay_ms = 100,
+        .set_symbol_rate = samsung_smt_7020_stv0299_set_symbol_rate,
+};
+
 static int dvb_register(struct cx8802_dev *dev)
 {
         struct cx88_core *core = dev->core;
@@ -1203,6 +1391,34 @@ static int dvb_register(struct cx8802_dev *dev)
                 }
                 break;
                 }
+        case CX88_BOARD_SAMSUNG_SMT_7020:
+                dev->ts_gen_cntrl = 0x08;
+
+                struct cx88_core *core = dev->core;
+
+                cx_set(MO_GP0_IO, 0x0101);
+
+                cx_clear(MO_GP0_IO, 0x01);
+                mdelay(100);
+                cx_set(MO_GP0_IO, 0x01);
+                mdelay(200);
+
+                fe0->dvb.frontend = dvb_attach(stv0299_attach,
+                                        &samsung_stv0299_config,
+                                        &dev->core->i2c_adap);
+                if (fe0->dvb.frontend) {
+                        fe0->dvb.frontend->ops.tuner_ops.set_params =
+                                samsung_smt_7020_tuner_set_params;
+                        fe0->dvb.frontend->tuner_priv =
+                                &dev->core->i2c_adap;
+                        fe0->dvb.frontend->ops.set_voltage =
+                                samsung_smt_7020_set_voltage;
+                        fe0->dvb.frontend->ops.set_tone =
+                                samsung_smt_7020_set_tone;
+                }
+
+                break;
+
         default:
                 printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card isn't supported yet\n",
                        core->name);