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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-07 12:49:05 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-07 12:49:05 +0400
commit0b8e74c6f44094189dbe78baf4101acc7570c6af (patch)
tree6440561d09fb71ba5928664604ec92f29940be6b /drivers/media/usb/dvb-usb/friio-fe.c
parent7f60ba388f5b9dd8b0da463b394412dace3ab814 (diff)
parentbd0d10498826ed150da5e4c45baf8b9c7088fb71 (diff)
downloadlinux-0b8e74c6f44094189dbe78baf4101acc7570c6af.tar.xz
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: "The first part of the media updates for Kernel 3.7. This series contain: - A major tree renaming patch series: now, drivers are organized internally by their used bus, instead of by V4L2 and/or DVB API, providing a cleaner driver location for hybrid drivers that implement both APIs, and allowing to cleanup the Kconfig items and make them more intuitive for the end user; - Media Kernel developers are typically very lazy with their duties of keeping the MAINTAINERS entries for their drivers updated. As now the tree is more organized, we're doing an effort to add/update those entries for the drivers that aren't currently orphan; - Several DVB USB drivers got moved to a new DVB USB v2 core; the new core fixes several bugs (as the existing one that got bitroted). Now, suspend/resume finally started to work fine (at least with some devices - we should expect more work with regards to it); - added multistream support for DVB-T2, and unified the API for DVB-S2 and ISDB-S. Backward binary support is preserved; - as usual, a few new drivers, some V4L2 core improvements and lots of drivers improvements and fixes. There are some points to notice on this series: 1) you should expect a trivial merge conflict on your tree, with the removal of Documentation/feature-removal-schedule.txt: this series would be adding two additional entries there. I opted to not rebase it due to this recent change; 2) With regards to the PCTV 520e udev-related breakage, I opted to fix it in a way that the patches can be backported to 3.5 even without your firmware fix patch. This way, Greg doesn't need to rush backporting your patch (as there are still the firmware cache and firmware path customization issues to be addressed there). I'll send later a patch (likely after the end of the merge window) reverting the rest of the DRX-K async firmware request, fully restoring its original behaviour to allow media drivers to initialize everything serialized as before for 3.7 and upper. 3) I'm planning to work on this weekend to test the DMABUF patches for V4L2. The patches are on my queue for several Kernel cycles, but, up to now, there is/was no way to test the series locally. I have some concerns about this particular changeset with regards to security issues, and with regards to the replacement of the old VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to GPU drivers change. The Overlay API allows direct PCI2PCI transfers from a media capture card into the GPU framebuffer, but its API is crappy. Also, the only existing X11 driver that implements it requires a XV extension that is not available anymore on modern drivers. The DMABUF can do the same thing, but with it is promising to be a properly-designed API. If I can successfully test this series and be happy with it, I should be asking you to pull them next week." * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits) em28xx: regression fix: use DRX-K sync firmware requests on em28xx drxk: allow loading firmware synchrousnously em28xx: Make all em28xx extensions to be initialized asynchronously [media] tda18271: properly report read errors in tda18271_get_id [media] tda18271: delay IR & RF calibration until init() if delay_cal is set [media] MAINTAINERS: add Michael Krufky as tda827x maintainer [media] MAINTAINERS: add Michael Krufky as tda8290 maintainer [media] MAINTAINERS: add Michael Krufky as cxusb maintainer [media] MAINTAINERS: add Michael Krufky as lg2160 maintainer [media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer [media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer [media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer [media] MAINTAINERS: add Michael Krufky as tda18271 maintainer [media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap [media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend() [media] exynos-gsc: Add missing static storage class specifiers [media] exynos-gsc: Remove <linux/version.h> header file inclusion [media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs() [media] s5p-tv: Fix potential NULL pointer dereference error [media] s5k6aa: Fix possible NULL pointer dereference ...
Diffstat (limited to 'drivers/media/usb/dvb-usb/friio-fe.c')
-rw-r--r--drivers/media/usb/dvb-usb/friio-fe.c473
1 files changed, 473 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb/friio-fe.c b/drivers/media/usb/dvb-usb/friio-fe.c
new file mode 100644
index 000000000000..90a70c66a96e
--- /dev/null
+++ b/drivers/media/usb/dvb-usb/friio-fe.c
@@ -0,0 +1,473 @@
+/* DVB USB compliant Linux driver for the Friio USB2.0 ISDB-T receiver.
+ *
+ * Copyright (C) 2009 Akihiro Tsukada <tskd2@yahoo.co.jp>
+ *
+ * This module is based off the the gl861 and vp702x modules.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 2.
+ *
+ * see Documentation/dvb/README.dvb-usb for more information
+ */
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include "friio.h"
+
+struct jdvbt90502_state {
+ struct i2c_adapter *i2c;
+ struct dvb_frontend frontend;
+ struct jdvbt90502_config config;
+};
+
+/* NOTE: TC90502 has 16bit register-address? */
+/* register 0x0100 is used for reading PLL status, so reg is u16 here */
+static int jdvbt90502_reg_read(struct jdvbt90502_state *state,
+ const u16 reg, u8 *buf, const size_t count)
+{
+ int ret;
+ u8 wbuf[3];
+ struct i2c_msg msg[2];
+
+ wbuf[0] = reg & 0xFF;
+ wbuf[1] = 0;
+ wbuf[2] = reg >> 8;
+
+ msg[0].addr = state->config.demod_address;
+ msg[0].flags = 0;
+ msg[0].buf = wbuf;
+ msg[0].len = sizeof(wbuf);
+
+ msg[1].addr = msg[0].addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].buf = buf;
+ msg[1].len = count;
+
+ ret = i2c_transfer(state->i2c, msg, 2);
+ if (ret != 2) {
+ deb_fe(" reg read failed.\n");
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+/* currently 16bit register-address is not used, so reg is u8 here */
+static int jdvbt90502_single_reg_write(struct jdvbt90502_state *state,
+ const u8 reg, const u8 val)
+{
+ struct i2c_msg msg;
+ u8 wbuf[2];
+
+ wbuf[0] = reg;
+ wbuf[1] = val;
+
+ msg.addr = state->config.demod_address;
+ msg.flags = 0;
+ msg.buf = wbuf;
+ msg.len = sizeof(wbuf);
+
+ if (i2c_transfer(state->i2c, &msg, 1) != 1) {
+ deb_fe(" reg write failed.");
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+static int _jdvbt90502_write(struct dvb_frontend *fe, const u8 buf[], int len)
+{
+ struct jdvbt90502_state *state = fe->demodulator_priv;
+ int err, i;
+ for (i = 0; i < len - 1; i++) {
+ err = jdvbt90502_single_reg_write(state,
+ buf[0] + i, buf[i + 1]);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+/* read pll status byte via the demodulator's I2C register */
+/* note: Win box reads it by 8B block at the I2C addr 0x30 from reg:0x80 */
+static int jdvbt90502_pll_read(struct jdvbt90502_state *state, u8 *result)
+{
+ int ret;
+
+ /* +1 for reading */
+ u8 pll_addr_byte = (state->config.pll_address << 1) + 1;
+
+ *result = 0;
+
+ ret = jdvbt90502_single_reg_write(state, JDVBT90502_2ND_I2C_REG,
+ pll_addr_byte);
+ if (ret)
+ goto error;
+
+ ret = jdvbt90502_reg_read(state, 0x0100, result, 1);
+ if (ret)
+ goto error;
+
+ deb_fe("PLL read val:%02x\n", *result);
+ return 0;
+
+error:
+ deb_fe("%s:ret == %d\n", __func__, ret);
+ return -EREMOTEIO;
+}
+
+
+/* set pll frequency via the demodulator's I2C register */
+static int jdvbt90502_pll_set_freq(struct jdvbt90502_state *state, u32 freq)
+{
+ int ret;
+ int retry;
+ u8 res1;
+ u8 res2[9];
+
+ u8 pll_freq_cmd[PLL_CMD_LEN];
+ u8 pll_agc_cmd[PLL_CMD_LEN];
+ struct i2c_msg msg[2];
+ u32 f;
+
+ deb_fe("%s: freq=%d, step=%d\n", __func__, freq,
+ state->frontend.ops.info.frequency_stepsize);
+ /* freq -> oscilator frequency conversion. */
+ /* freq: 473,000,000 + n*6,000,000 [+ 142857 (center freq. shift)] */
+ f = freq / state->frontend.ops.info.frequency_stepsize;
+ /* add 399[1/7 MHZ] = 57MHz for the IF */
+ f += 399;
+ /* add center frequency shift if necessary */
+ if (f % 7 == 0)
+ f++;
+ pll_freq_cmd[DEMOD_REDIRECT_REG] = JDVBT90502_2ND_I2C_REG; /* 0xFE */
+ pll_freq_cmd[ADDRESS_BYTE] = state->config.pll_address << 1;
+ pll_freq_cmd[DIVIDER_BYTE1] = (f >> 8) & 0x7F;
+ pll_freq_cmd[DIVIDER_BYTE2] = f & 0xFF;
+ pll_freq_cmd[CONTROL_BYTE] = 0xB2; /* ref.divider:28, 4MHz/28=1/7MHz */
+ pll_freq_cmd[BANDSWITCH_BYTE] = 0x08; /* UHF band */
+
+ msg[0].addr = state->config.demod_address;
+ msg[0].flags = 0;
+ msg[0].buf = pll_freq_cmd;
+ msg[0].len = sizeof(pll_freq_cmd);
+
+ ret = i2c_transfer(state->i2c, &msg[0], 1);
+ if (ret != 1)
+ goto error;
+
+ udelay(50);
+
+ pll_agc_cmd[DEMOD_REDIRECT_REG] = pll_freq_cmd[DEMOD_REDIRECT_REG];
+ pll_agc_cmd[ADDRESS_BYTE] = pll_freq_cmd[ADDRESS_BYTE];
+ pll_agc_cmd[DIVIDER_BYTE1] = pll_freq_cmd[DIVIDER_BYTE1];
+ pll_agc_cmd[DIVIDER_BYTE2] = pll_freq_cmd[DIVIDER_BYTE2];
+ pll_agc_cmd[CONTROL_BYTE] = 0x9A; /* AGC_CTRL instead of BANDSWITCH */
+ pll_agc_cmd[AGC_CTRL_BYTE] = 0x50;
+ /* AGC Time Constant 2s, AGC take-over point:103dBuV(lowest) */
+
+ msg[1].addr = msg[0].addr;
+ msg[1].flags = 0;
+ msg[1].buf = pll_agc_cmd;
+ msg[1].len = sizeof(pll_agc_cmd);
+
+ ret = i2c_transfer(state->i2c, &msg[1], 1);
+ if (ret != 1)
+ goto error;
+
+ /* I don't know what these cmds are for, */
+ /* but the USB log on a windows box contains them */
+ ret = jdvbt90502_single_reg_write(state, 0x01, 0x40);
+ ret |= jdvbt90502_single_reg_write(state, 0x01, 0x00);
+ if (ret)
+ goto error;
+ udelay(100);
+
+ /* wait for the demod to be ready? */
+#define RETRY_COUNT 5
+ for (retry = 0; retry < RETRY_COUNT; retry++) {
+ ret = jdvbt90502_reg_read(state, 0x0096, &res1, 1);
+ if (ret)
+ goto error;
+ /* if (res1 != 0x00) goto error; */
+ ret = jdvbt90502_reg_read(state, 0x00B0, res2, sizeof(res2));
+ if (ret)
+ goto error;
+ if (res2[0] >= 0xA7)
+ break;
+ msleep(100);
+ }
+ if (retry >= RETRY_COUNT) {
+ deb_fe("%s: FE does not get ready after freq setting.\n",
+ __func__);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+error:
+ deb_fe("%s:ret == %d\n", __func__, ret);
+ return -EREMOTEIO;
+}
+
+static int jdvbt90502_read_status(struct dvb_frontend *fe, fe_status_t *state)
+{
+ u8 result;
+ int ret;
+
+ *state = FE_HAS_SIGNAL;
+
+ ret = jdvbt90502_pll_read(fe->demodulator_priv, &result);
+ if (ret) {
+ deb_fe("%s:ret == %d\n", __func__, ret);
+ return -EREMOTEIO;
+ }
+
+ *state = FE_HAS_SIGNAL
+ | FE_HAS_CARRIER
+ | FE_HAS_VITERBI
+ | FE_HAS_SYNC;
+
+ if (result & PLL_STATUS_LOCKED)
+ *state |= FE_HAS_LOCK;
+
+ return 0;
+}
+
+static int jdvbt90502_read_signal_strength(struct dvb_frontend *fe,
+ u16 *strength)
+{
+ int ret;
+ u8 rbuf[37];
+
+ *strength = 0;
+
+ /* status register (incl. signal strength) : 0x89 */
+ /* TODO: read just the necessary registers [0x8B..0x8D]? */
+ ret = jdvbt90502_reg_read(fe->demodulator_priv, 0x0089,
+ rbuf, sizeof(rbuf));
+
+ if (ret) {
+ deb_fe("%s:ret == %d\n", __func__, ret);
+ return -EREMOTEIO;
+ }
+
+ /* signal_strength: rbuf[2-4] (24bit BE), use lower 16bit for now. */
+ *strength = (rbuf[3] << 8) + rbuf[4];
+ if (rbuf[2])
+ *strength = 0xffff;
+
+ return 0;
+}
+
+
+/* filter out un-supported properties to notify users */
+static int jdvbt90502_set_property(struct dvb_frontend *fe,
+ struct dtv_property *tvp)
+{
+ int r = 0;
+
+ switch (tvp->cmd) {
+ case DTV_DELIVERY_SYSTEM:
+ if (tvp->u.data != SYS_ISDBT)
+ r = -EINVAL;
+ break;
+ case DTV_CLEAR:
+ case DTV_TUNE:
+ case DTV_FREQUENCY:
+ break;
+ default:
+ r = -EINVAL;
+ }
+ return r;
+}
+
+static int jdvbt90502_get_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ p->inversion = INVERSION_AUTO;
+ p->bandwidth_hz = 6000000;
+ p->code_rate_HP = FEC_AUTO;
+ p->code_rate_LP = FEC_AUTO;
+ p->modulation = QAM_64;
+ p->transmission_mode = TRANSMISSION_MODE_AUTO;
+ p->guard_interval = GUARD_INTERVAL_AUTO;
+ p->hierarchy = HIERARCHY_AUTO;
+ return 0;
+}
+
+static int jdvbt90502_set_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+
+ /**
+ * NOTE: ignore all the parameters except frequency.
+ * others should be fixed to the proper value for ISDB-T,
+ * but don't check here.
+ */
+
+ struct jdvbt90502_state *state = fe->demodulator_priv;
+ int ret;
+
+ deb_fe("%s: Freq:%d\n", __func__, p->frequency);
+
+ /* for recovery from DTV_CLEAN */
+ fe->dtv_property_cache.delivery_system = SYS_ISDBT;
+
+ ret = jdvbt90502_pll_set_freq(state, p->frequency);
+ if (ret) {
+ deb_fe("%s:ret == %d\n", __func__, ret);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+
+/**
+ * (reg, val) commad list to initialize this module.
+ * captured on a Windows box.
+ */
+static u8 init_code[][2] = {
+ {0x01, 0x40},
+ {0x04, 0x38},
+ {0x05, 0x40},
+ {0x07, 0x40},
+ {0x0F, 0x4F},
+ {0x11, 0x21},
+ {0x12, 0x0B},
+ {0x13, 0x2F},
+ {0x14, 0x31},
+ {0x16, 0x02},
+ {0x21, 0xC4},
+ {0x22, 0x20},
+ {0x2C, 0x79},
+ {0x2D, 0x34},
+ {0x2F, 0x00},
+ {0x30, 0x28},
+ {0x31, 0x31},
+ {0x32, 0xDF},
+ {0x38, 0x01},
+ {0x39, 0x78},
+ {0x3B, 0x33},
+ {0x3C, 0x33},
+ {0x48, 0x90},
+ {0x51, 0x68},
+ {0x5E, 0x38},
+ {0x71, 0x00},
+ {0x72, 0x08},
+ {0x77, 0x00},
+ {0xC0, 0x21},
+ {0xC1, 0x10},
+ {0xE4, 0x1A},
+ {0xEA, 0x1F},
+ {0x77, 0x00},
+ {0x71, 0x00},
+ {0x71, 0x00},
+ {0x76, 0x0C},
+};
+
+static const int init_code_len = sizeof(init_code) / sizeof(u8[2]);
+
+static int jdvbt90502_init(struct dvb_frontend *fe)
+{
+ int i = -1;
+ int ret;
+ struct i2c_msg msg;
+
+ struct jdvbt90502_state *state = fe->demodulator_priv;
+
+ deb_fe("%s called.\n", __func__);
+
+ msg.addr = state->config.demod_address;
+ msg.flags = 0;
+ msg.len = 2;
+ for (i = 0; i < init_code_len; i++) {
+ msg.buf = init_code[i];
+ ret = i2c_transfer(state->i2c, &msg, 1);
+ if (ret != 1)
+ goto error;
+ }
+ fe->dtv_property_cache.delivery_system = SYS_ISDBT;
+ msleep(100);
+
+ return 0;
+
+error:
+ deb_fe("%s: init_code[%d] failed. ret==%d\n", __func__, i, ret);
+ return -EREMOTEIO;
+}
+
+
+static void jdvbt90502_release(struct dvb_frontend *fe)
+{
+ struct jdvbt90502_state *state = fe->demodulator_priv;
+ kfree(state);
+}
+
+
+static struct dvb_frontend_ops jdvbt90502_ops;
+
+struct dvb_frontend *jdvbt90502_attach(struct dvb_usb_device *d)
+{
+ struct jdvbt90502_state *state = NULL;
+
+ deb_info("%s called.\n", __func__);
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct jdvbt90502_state), GFP_KERNEL);
+ if (state == NULL)
+ goto error;
+
+ /* setup the state */
+ state->i2c = &d->i2c_adap;
+ memcpy(&state->config, &friio_fe_config, sizeof(friio_fe_config));
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &jdvbt90502_ops,
+ sizeof(jdvbt90502_ops));
+ state->frontend.demodulator_priv = state;
+
+ if (jdvbt90502_init(&state->frontend) < 0)
+ goto error;
+
+ return &state->frontend;
+
+error:
+ kfree(state);
+ return NULL;
+}
+
+static struct dvb_frontend_ops jdvbt90502_ops = {
+ .delsys = { SYS_ISDBT },
+ .info = {
+ .name = "Comtech JDVBT90502 ISDB-T",
+ .frequency_min = 473000000, /* UHF 13ch, center */
+ .frequency_max = 767142857, /* UHF 62ch, center */
+ .frequency_stepsize = JDVBT90502_PLL_CLK / JDVBT90502_PLL_DIVIDER,
+ .frequency_tolerance = 0,
+
+ /* NOTE: this driver ignores all parameters but frequency. */
+ .caps = FE_CAN_INVERSION_AUTO |
+ FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
+ FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
+ FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO |
+ FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_HIERARCHY_AUTO,
+ },
+
+ .release = jdvbt90502_release,
+
+ .init = jdvbt90502_init,
+ .write = _jdvbt90502_write,
+
+ .set_property = jdvbt90502_set_property,
+
+ .set_frontend = jdvbt90502_set_frontend,
+ .get_frontend = jdvbt90502_get_frontend,
+
+ .read_status = jdvbt90502_read_status,
+ .read_signal_strength = jdvbt90502_read_signal_strength,
+};