[media] move i2c files into drivers/media/i2c

Move ancillary I2C drivers into drivers/media/i2c, in order to
better organize them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 1281 deletions

diff --git a/drivers/media/video/cx25840/cx25840-ir.c b/drivers/media/video/cx25840/cx25840-ir.c
deleted file mode 100644
index 38ce76ed1924..000000000000
--- a/drivers/media/video/cx25840/cx25840-ir.c
+++ /dev/null
@@ -1,1281 +0,0 @@
-/*
- *  Driver for the Conexant CX2584x Audio/Video decoder chip and related cores
- *
- *  Integrated Consumer Infrared Controller
- *
- *  Copyright (C) 2010  Andy Walls <awalls@md.metrocast.net>
- *
- *  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; either version 2
- *  of the License, or (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- *  02110-1301, USA.
- */
-
-#include <linux/slab.h>
-#include <linux/kfifo.h>
-#include <linux/module.h>
-#include <media/cx25840.h>
-#include <media/rc-core.h>
-
-#include "cx25840-core.h"
-
-static unsigned int ir_debug;
-module_param(ir_debug, int, 0644);
-MODULE_PARM_DESC(ir_debug, "enable integrated IR debug messages");
-
-#define CX25840_IR_REG_BASE 	0x200
-
-#define CX25840_IR_CNTRL_REG	0x200
-#define CNTRL_WIN_3_3	0x00000000
-#define CNTRL_WIN_4_3	0x00000001
-#define CNTRL_WIN_3_4	0x00000002
-#define CNTRL_WIN_4_4	0x00000003
-#define CNTRL_WIN	0x00000003
-#define CNTRL_EDG_NONE	0x00000000
-#define CNTRL_EDG_FALL	0x00000004
-#define CNTRL_EDG_RISE	0x00000008
-#define CNTRL_EDG_BOTH	0x0000000C
-#define CNTRL_EDG	0x0000000C
-#define CNTRL_DMD	0x00000010
-#define CNTRL_MOD	0x00000020
-#define CNTRL_RFE	0x00000040
-#define CNTRL_TFE	0x00000080
-#define CNTRL_RXE	0x00000100
-#define CNTRL_TXE	0x00000200
-#define CNTRL_RIC	0x00000400
-#define CNTRL_TIC	0x00000800
-#define CNTRL_CPL	0x00001000
-#define CNTRL_LBM	0x00002000
-#define CNTRL_R		0x00004000
-
-#define CX25840_IR_TXCLK_REG	0x204
-#define TXCLK_TCD	0x0000FFFF
-
-#define CX25840_IR_RXCLK_REG	0x208
-#define RXCLK_RCD	0x0000FFFF
-
-#define CX25840_IR_CDUTY_REG	0x20C
-#define CDUTY_CDC	0x0000000F
-
-#define CX25840_IR_STATS_REG	0x210
-#define STATS_RTO	0x00000001
-#define STATS_ROR	0x00000002
-#define STATS_RBY	0x00000004
-#define STATS_TBY	0x00000008
-#define STATS_RSR	0x00000010
-#define STATS_TSR	0x00000020
-
-#define CX25840_IR_IRQEN_REG	0x214
-#define IRQEN_RTE	0x00000001
-#define IRQEN_ROE	0x00000002
-#define IRQEN_RSE	0x00000010
-#define IRQEN_TSE	0x00000020
-#define IRQEN_MSK	0x00000033
-
-#define CX25840_IR_FILTR_REG	0x218
-#define FILTR_LPF	0x0000FFFF
-
-#define CX25840_IR_FIFO_REG	0x23C
-#define FIFO_RXTX	0x0000FFFF
-#define FIFO_RXTX_LVL	0x00010000
-#define FIFO_RXTX_RTO	0x0001FFFF
-#define FIFO_RX_NDV	0x00020000
-#define FIFO_RX_DEPTH	8
-#define FIFO_TX_DEPTH	8
-
-#define CX25840_VIDCLK_FREQ	108000000 /* 108 MHz, BT.656 */
-#define CX25840_IR_REFCLK_FREQ	(CX25840_VIDCLK_FREQ / 2)
-
-/*
- * We use this union internally for convenience, but callers to tx_write
- * and rx_read will be expecting records of type struct ir_raw_event.
- * Always ensure the size of this union is dictated by struct ir_raw_event.
- */
-union cx25840_ir_fifo_rec {
-	u32 hw_fifo_data;
-	struct ir_raw_event ir_core_data;
-};
-
-#define CX25840_IR_RX_KFIFO_SIZE    (256 * sizeof(union cx25840_ir_fifo_rec))
-#define CX25840_IR_TX_KFIFO_SIZE    (256 * sizeof(union cx25840_ir_fifo_rec))
-
-struct cx25840_ir_state {
-	struct i2c_client *c;
-
-	struct v4l2_subdev_ir_parameters rx_params;
-	struct mutex rx_params_lock; /* protects Rx parameter settings cache */
-	atomic_t rxclk_divider;
-	atomic_t rx_invert;
-
-	struct kfifo rx_kfifo;
-	spinlock_t rx_kfifo_lock; /* protect Rx data kfifo */
-
-	struct v4l2_subdev_ir_parameters tx_params;
-	struct mutex tx_params_lock; /* protects Tx parameter settings cache */
-	atomic_t txclk_divider;
-};
-
-static inline struct cx25840_ir_state *to_ir_state(struct v4l2_subdev *sd)
-{
-	struct cx25840_state *state = to_state(sd);
-	return state ? state->ir_state : NULL;
-}
-
-
-/*
- * Rx and Tx Clock Divider register computations
- *
- * Note the largest clock divider value of 0xffff corresponds to:
- * 	(0xffff + 1) * 1000 / 108/2 MHz = 1,213,629.629... ns
- * which fits in 21 bits, so we'll use unsigned int for time arguments.
- */
-static inline u16 count_to_clock_divider(unsigned int d)
-{
-	if (d > RXCLK_RCD + 1)
-		d = RXCLK_RCD;
-	else if (d < 2)
-		d = 1;
-	else
-		d--;
-	return (u16) d;
-}
-
-static inline u16 ns_to_clock_divider(unsigned int ns)
-{
-	return count_to_clock_divider(
-		DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ / 1000000 * ns, 1000));
-}
-
-static inline unsigned int clock_divider_to_ns(unsigned int divider)
-{
-	/* Period of the Rx or Tx clock in ns */
-	return DIV_ROUND_CLOSEST((divider + 1) * 1000,
-				 CX25840_IR_REFCLK_FREQ / 1000000);
-}
-
-static inline u16 carrier_freq_to_clock_divider(unsigned int freq)
-{
-	return count_to_clock_divider(
-			  DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ, freq * 16));
-}
-
-static inline unsigned int clock_divider_to_carrier_freq(unsigned int divider)
-{
-	return DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ, (divider + 1) * 16);
-}
-
-static inline u16 freq_to_clock_divider(unsigned int freq,
-					unsigned int rollovers)
-{
-	return count_to_clock_divider(
-		   DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ, freq * rollovers));
-}
-
-static inline unsigned int clock_divider_to_freq(unsigned int divider,
-						 unsigned int rollovers)
-{
-	return DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ,
-				 (divider + 1) * rollovers);
-}
-
-/*
- * Low Pass Filter register calculations
- *
- * Note the largest count value of 0xffff corresponds to:
- * 	0xffff * 1000 / 108/2 MHz = 1,213,611.11... ns
- * which fits in 21 bits, so we'll use unsigned int for time arguments.
- */
-static inline u16 count_to_lpf_count(unsigned int d)
-{
-	if (d > FILTR_LPF)
-		d = FILTR_LPF;
-	else if (d < 4)
-		d = 0;
-	return (u16) d;
-}
-
-static inline u16 ns_to_lpf_count(unsigned int ns)
-{
-	return count_to_lpf_count(
-		DIV_ROUND_CLOSEST(CX25840_IR_REFCLK_FREQ / 1000000 * ns, 1000));
-}
-
-static inline unsigned int lpf_count_to_ns(unsigned int count)
-{
-	/* Duration of the Low Pass Filter rejection window in ns */
-	return DIV_ROUND_CLOSEST(count * 1000,
-				 CX25840_IR_REFCLK_FREQ / 1000000);
-}
-
-static inline unsigned int lpf_count_to_us(unsigned int count)
-{
-	/* Duration of the Low Pass Filter rejection window in us */
-	return DIV_ROUND_CLOSEST(count, CX25840_IR_REFCLK_FREQ / 1000000);
-}
-
-/*
- * FIFO register pulse width count compuations
- */
-static u32 clock_divider_to_resolution(u16 divider)
-{
-	/*
-	 * Resolution is the duration of 1 tick of the readable portion of
-	 * of the pulse width counter as read from the FIFO.  The two lsb's are
-	 * not readable, hence the << 2.  This function returns ns.
-	 */
-	return DIV_ROUND_CLOSEST((1 << 2)  * ((u32) divider + 1) * 1000,
-				 CX25840_IR_REFCLK_FREQ / 1000000);
-}
-
-static u64 pulse_width_count_to_ns(u16 count, u16 divider)
-{
-	u64 n;
-	u32 rem;
-
-	/*
-	 * The 2 lsb's of the pulse width timer count are not readable, hence
-	 * the (count << 2) | 0x3
-	 */
-	n = (((u64) count << 2) | 0x3) * (divider + 1) * 1000; /* millicycles */
-	rem = do_div(n, CX25840_IR_REFCLK_FREQ / 1000000);     /* / MHz => ns */
-	if (rem >= CX25840_IR_REFCLK_FREQ / 1000000 / 2)
-		n++;
-	return n;
-}
-
-#if 0
-/* Keep as we will need this for Transmit functionality */
-static u16 ns_to_pulse_width_count(u32 ns, u16 divider)
-{
-	u64 n;
-	u32 d;
-	u32 rem;
-
-	/*
-	 * The 2 lsb's of the pulse width timer count are not accessible, hence
-	 * the (1 << 2)
-	 */
-	n = ((u64) ns) * CX25840_IR_REFCLK_FREQ / 1000000; /* millicycles */
-	d = (1 << 2) * ((u32) divider + 1) * 1000; /* millicycles/count */
-	rem = do_div(n, d);
-	if (rem >= d / 2)
-		n++;
-
-	if (n > FIFO_RXTX)
-		n = FIFO_RXTX;
-	else if (n == 0)
-		n = 1;
-	return (u16) n;
-}
-
-#endif
-static unsigned int pulse_width_count_to_us(u16 count, u16 divider)
-{
-	u64 n;
-	u32 rem;
-
-	/*
-	 * The 2 lsb's of the pulse width timer count are not readable, hence
-	 * the (count << 2) | 0x3
-	 */
-	n = (((u64) count << 2) | 0x3) * (divider + 1);    /* cycles      */
-	rem = do_div(n, CX25840_IR_REFCLK_FREQ / 1000000); /* / MHz => us */
-	if (rem >= CX25840_IR_REFCLK_FREQ / 1000000 / 2)
-		n++;
-	return (unsigned int) n;
-}
-
-/*
- * Pulse Clocks computations: Combined Pulse Width Count & Rx Clock Counts
- *
- * The total pulse clock count is an 18 bit pulse width timer count as the most
- * significant part and (up to) 16 bit clock divider count as a modulus.
- * When the Rx clock divider ticks down to 0, it increments the 18 bit pulse
- * width timer count's least significant bit.
- */
-static u64 ns_to_pulse_clocks(u32 ns)
-{
-	u64 clocks;
-	u32 rem;
-	clocks = CX25840_IR_REFCLK_FREQ / 1000000 * (u64) ns; /* millicycles  */
-	rem = do_div(clocks, 1000);                         /* /1000 = cycles */
-	if (rem >= 1000 / 2)
-		clocks++;
-	return clocks;
-}
-
-static u16 pulse_clocks_to_clock_divider(u64 count)
-{
-	do_div(count, (FIFO_RXTX << 2) | 0x3);
-
-	/* net result needs to be rounded down and decremented by 1 */
-	if (count > RXCLK_RCD + 1)
-		count = RXCLK_RCD;
-	else if (count < 2)
-		count = 1;
-	else
-		count--;
-	return (u16) count;
-}
-
-/*
- * IR Control Register helpers
- */
-enum tx_fifo_watermark {
-	TX_FIFO_HALF_EMPTY = 0,
-	TX_FIFO_EMPTY      = CNTRL_TIC,
-};
-
-enum rx_fifo_watermark {
-	RX_FIFO_HALF_FULL = 0,
-	RX_FIFO_NOT_EMPTY = CNTRL_RIC,
-};
-
-static inline void control_tx_irq_watermark(struct i2c_client *c,
-					    enum tx_fifo_watermark level)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~CNTRL_TIC, level);
-}
-
-static inline void control_rx_irq_watermark(struct i2c_client *c,
-					    enum rx_fifo_watermark level)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~CNTRL_RIC, level);
-}
-
-static inline void control_tx_enable(struct i2c_client *c, bool enable)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~(CNTRL_TXE | CNTRL_TFE),
-			enable ? (CNTRL_TXE | CNTRL_TFE) : 0);
-}
-
-static inline void control_rx_enable(struct i2c_client *c, bool enable)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~(CNTRL_RXE | CNTRL_RFE),
-			enable ? (CNTRL_RXE | CNTRL_RFE) : 0);
-}
-
-static inline void control_tx_modulation_enable(struct i2c_client *c,
-						bool enable)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~CNTRL_MOD,
-			enable ? CNTRL_MOD : 0);
-}
-
-static inline void control_rx_demodulation_enable(struct i2c_client *c,
-						  bool enable)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~CNTRL_DMD,
-			enable ? CNTRL_DMD : 0);
-}
-
-static inline void control_rx_s_edge_detection(struct i2c_client *c,
-					       u32 edge_types)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~CNTRL_EDG_BOTH,
-			edge_types & CNTRL_EDG_BOTH);
-}
-
-static void control_rx_s_carrier_window(struct i2c_client *c,
-					unsigned int carrier,
-					unsigned int *carrier_range_low,
-					unsigned int *carrier_range_high)
-{
-	u32 v;
-	unsigned int c16 = carrier * 16;
-
-	if (*carrier_range_low < DIV_ROUND_CLOSEST(c16, 16 + 3)) {
-		v = CNTRL_WIN_3_4;
-		*carrier_range_low = DIV_ROUND_CLOSEST(c16, 16 + 4);
-	} else {
-		v = CNTRL_WIN_3_3;
-		*carrier_range_low = DIV_ROUND_CLOSEST(c16, 16 + 3);
-	}
-
-	if (*carrier_range_high > DIV_ROUND_CLOSEST(c16, 16 - 3)) {
-		v |= CNTRL_WIN_4_3;
-		*carrier_range_high = DIV_ROUND_CLOSEST(c16, 16 - 4);
-	} else {
-		v |= CNTRL_WIN_3_3;
-		*carrier_range_high = DIV_ROUND_CLOSEST(c16, 16 - 3);
-	}
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~CNTRL_WIN, v);
-}
-
-static inline void control_tx_polarity_invert(struct i2c_client *c,
-					      bool invert)
-{
-	cx25840_and_or4(c, CX25840_IR_CNTRL_REG, ~CNTRL_CPL,
-			invert ? CNTRL_CPL : 0);
-}
-
-/*
- * IR Rx & Tx Clock Register helpers
- */
-static unsigned int txclk_tx_s_carrier(struct i2c_client *c,
-				       unsigned int freq,
-				       u16 *divider)
-{
-	*divider = carrier_freq_to_clock_divider(freq);
-	cx25840_write4(c, CX25840_IR_TXCLK_REG, *divider);
-	return clock_divider_to_carrier_freq(*divider);
-}
-
-static unsigned int rxclk_rx_s_carrier(struct i2c_client *c,
-				       unsigned int freq,
-				       u16 *divider)
-{
-	*divider = carrier_freq_to_clock_divider(freq);
-	cx25840_write4(c, CX25840_IR_RXCLK_REG, *divider);
-	return clock_divider_to_carrier_freq(*divider);
-}
-
-static u32 txclk_tx_s_max_pulse_width(struct i2c_client *c, u32 ns,
-				      u16 *divider)
-{
-	u64 pulse_clocks;
-
-	if (ns > IR_MAX_DURATION)
-		ns = IR_MAX_DURATION;
-	pulse_clocks = ns_to_pulse_clocks(ns);
-	*divider = pulse_clocks_to_clock_divider(pulse_clocks);
-	cx25840_write4(c, CX25840_IR_TXCLK_REG, *divider);
-	return (u32) pulse_width_count_to_ns(FIFO_RXTX, *divider);
-}
-
-static u32 rxclk_rx_s_max_pulse_width(struct i2c_client *c, u32 ns,
-				      u16 *divider)
-{
-	u64 pulse_clocks;
-
-	if (ns > IR_MAX_DURATION)
-		ns = IR_MAX_DURATION;
-	pulse_clocks = ns_to_pulse_clocks(ns);
-	*divider = pulse_clocks_to_clock_divider(pulse_clocks);
-	cx25840_write4(c, CX25840_IR_RXCLK_REG, *divider);
-	return (u32) pulse_width_count_to_ns(FIFO_RXTX, *divider);
-}
-
-/*
- * IR Tx Carrier Duty Cycle register helpers
- */
-static unsigned int cduty_tx_s_duty_cycle(struct i2c_client *c,
-					  unsigned int duty_cycle)
-{
-	u32 n;
-	n = DIV_ROUND_CLOSEST(duty_cycle * 100, 625); /* 16ths of 100% */
-	if (n != 0)
-		n--;
-	if (n > 15)
-		n = 15;
-	cx25840_write4(c, CX25840_IR_CDUTY_REG, n);
-	return DIV_ROUND_CLOSEST((n + 1) * 100, 16);
-}
-
-/*
- * IR Filter Register helpers
- */
-static u32 filter_rx_s_min_width(struct i2c_client *c, u32 min_width_ns)
-{
-	u32 count = ns_to_lpf_count(min_width_ns);
-	cx25840_write4(c, CX25840_IR_FILTR_REG, count);
-	return lpf_count_to_ns(count);
-}
-
-/*
- * IR IRQ Enable Register helpers
- */
-static inline void irqenable_rx(struct v4l2_subdev *sd, u32 mask)
-{
-	struct cx25840_state *state = to_state(sd);
-
-	if (is_cx23885(state) || is_cx23887(state))
-		mask ^= IRQEN_MSK;
-	mask &= (IRQEN_RTE | IRQEN_ROE | IRQEN_RSE);
-	cx25840_and_or4(state->c, CX25840_IR_IRQEN_REG,
-			~(IRQEN_RTE | IRQEN_ROE | IRQEN_RSE), mask);
-}
-
-static inline void irqenable_tx(struct v4l2_subdev *sd, u32 mask)
-{
-	struct cx25840_state *state = to_state(sd);
-
-	if (is_cx23885(state) || is_cx23887(state))
-		mask ^= IRQEN_MSK;
-	mask &= IRQEN_TSE;
-	cx25840_and_or4(state->c, CX25840_IR_IRQEN_REG, ~IRQEN_TSE, mask);
-}
-
-/*
- * V4L2 Subdevice IR Ops
- */
-int cx25840_ir_irq_handler(struct v4l2_subdev *sd, u32 status, bool *handled)
-{
-	struct cx25840_state *state = to_state(sd);
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-	struct i2c_client *c = NULL;
-	unsigned long flags;
-
-	union cx25840_ir_fifo_rec rx_data[FIFO_RX_DEPTH];
-	unsigned int i, j, k;
-	u32 events, v;
-	int tsr, rsr, rto, ror, tse, rse, rte, roe, kror;
-	u32 cntrl, irqen, stats;
-
-	*handled = false;
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	c = ir_state->c;
-
-	/* Only support the IR controller for the CX2388[57] AV Core for now */
-	if (!(is_cx23885(state) || is_cx23887(state)))
-		return -ENODEV;
-
-	cntrl = cx25840_read4(c, CX25840_IR_CNTRL_REG);
-	irqen = cx25840_read4(c, CX25840_IR_IRQEN_REG);
-	if (is_cx23885(state) || is_cx23887(state))
-		irqen ^= IRQEN_MSK;
-	stats = cx25840_read4(c, CX25840_IR_STATS_REG);
-
-	tsr = stats & STATS_TSR; /* Tx FIFO Service Request */
-	rsr = stats & STATS_RSR; /* Rx FIFO Service Request */
-	rto = stats & STATS_RTO; /* Rx Pulse Width Timer Time Out */
-	ror = stats & STATS_ROR; /* Rx FIFO Over Run */
-
-	tse = irqen & IRQEN_TSE; /* Tx FIFO Service Request IRQ Enable */
-	rse = irqen & IRQEN_RSE; /* Rx FIFO Service Reuqest IRQ Enable */
-	rte = irqen & IRQEN_RTE; /* Rx Pulse Width Timer Time Out IRQ Enable */
-	roe = irqen & IRQEN_ROE; /* Rx FIFO Over Run IRQ Enable */
-
-	v4l2_dbg(2, ir_debug, sd, "IR IRQ Status:  %s %s %s %s %s %s\n",
-		 tsr ? "tsr" : "   ", rsr ? "rsr" : "   ",
-		 rto ? "rto" : "   ", ror ? "ror" : "   ",
-		 stats & STATS_TBY ? "tby" : "   ",
-		 stats & STATS_RBY ? "rby" : "   ");
-
-	v4l2_dbg(2, ir_debug, sd, "IR IRQ Enables: %s %s %s %s\n",
-		 tse ? "tse" : "   ", rse ? "rse" : "   ",
-		 rte ? "rte" : "   ", roe ? "roe" : "   ");
-
-	/*
-	 * Transmitter interrupt service
-	 */
-	if (tse && tsr) {
-		/*
-		 * TODO:
-		 * Check the watermark threshold setting
-		 * Pull FIFO_TX_DEPTH or FIFO_TX_DEPTH/2 entries from tx_kfifo
-		 * Push the data to the hardware FIFO.
-		 * If there was nothing more to send in the tx_kfifo, disable
-		 *	the TSR IRQ and notify the v4l2_device.
-		 * If there was something in the tx_kfifo, check the tx_kfifo
-		 *      level and notify the v4l2_device, if it is low.
-		 */
-		/* For now, inhibit TSR interrupt until Tx is implemented */
-		irqenable_tx(sd, 0);
-		events = V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ;
-		v4l2_subdev_notify(sd, V4L2_SUBDEV_IR_TX_NOTIFY, &events);
-		*handled = true;
-	}
-
-	/*
-	 * Receiver interrupt service
-	 */
-	kror = 0;
-	if ((rse && rsr) || (rte && rto)) {
-		/*
-		 * Receive data on RSR to clear the STATS_RSR.
-		 * Receive data on RTO, since we may not have yet hit the RSR
-		 * watermark when we receive the RTO.
-		 */
-		for (i = 0, v = FIFO_RX_NDV;
-		     (v & FIFO_RX_NDV) && !kror; i = 0) {
-			for (j = 0;
-			     (v & FIFO_RX_NDV) && j < FIFO_RX_DEPTH; j++) {
-				v = cx25840_read4(c, CX25840_IR_FIFO_REG);
-				rx_data[i].hw_fifo_data = v & ~FIFO_RX_NDV;
-				i++;
-			}
-			if (i == 0)
-				break;
-			j = i * sizeof(union cx25840_ir_fifo_rec);
-			k = kfifo_in_locked(&ir_state->rx_kfifo,
-					    (unsigned char *) rx_data, j,
-					    &ir_state->rx_kfifo_lock);
-			if (k != j)
-				kror++; /* rx_kfifo over run */
-		}
-		*handled = true;
-	}
-
-	events = 0;
-	v = 0;
-	if (kror) {
-		events |= V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN;
-		v4l2_err(sd, "IR receiver software FIFO overrun\n");
-	}
-	if (roe && ror) {
-		/*
-		 * The RX FIFO Enable (CNTRL_RFE) must be toggled to clear
-		 * the Rx FIFO Over Run status (STATS_ROR)
-		 */
-		v |= CNTRL_RFE;
-		events |= V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN;
-		v4l2_err(sd, "IR receiver hardware FIFO overrun\n");
-	}
-	if (rte && rto) {
-		/*
-		 * The IR Receiver Enable (CNTRL_RXE) must be toggled to clear
-		 * the Rx Pulse Width Timer Time Out (STATS_RTO)
-		 */
-		v |= CNTRL_RXE;
-		events |= V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED;
-	}
-	if (v) {
-		/* Clear STATS_ROR & STATS_RTO as needed by reseting hardware */
-		cx25840_write4(c, CX25840_IR_CNTRL_REG, cntrl & ~v);
-		cx25840_write4(c, CX25840_IR_CNTRL_REG, cntrl);
-		*handled = true;
-	}
-	spin_lock_irqsave(&ir_state->rx_kfifo_lock, flags);
-	if (kfifo_len(&ir_state->rx_kfifo) >= CX25840_IR_RX_KFIFO_SIZE / 2)
-		events |= V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ;
-	spin_unlock_irqrestore(&ir_state->rx_kfifo_lock, flags);
-
-	if (events)
-		v4l2_subdev_notify(sd, V4L2_SUBDEV_IR_RX_NOTIFY, &events);
-	return 0;
-}
-
-/* Receiver */
-static int cx25840_ir_rx_read(struct v4l2_subdev *sd, u8 *buf, size_t count,
-			      ssize_t *num)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-	bool invert;
-	u16 divider;
-	unsigned int i, n;
-	union cx25840_ir_fifo_rec *p;
-	unsigned u, v, w;
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	invert = (bool) atomic_read(&ir_state->rx_invert);
-	divider = (u16) atomic_read(&ir_state->rxclk_divider);
-
-	n = count / sizeof(union cx25840_ir_fifo_rec)
-		* sizeof(union cx25840_ir_fifo_rec);
-	if (n == 0) {
-		*num = 0;
-		return 0;
-	}
-
-	n = kfifo_out_locked(&ir_state->rx_kfifo, buf, n,
-			     &ir_state->rx_kfifo_lock);
-
-	n /= sizeof(union cx25840_ir_fifo_rec);
-	*num = n * sizeof(union cx25840_ir_fifo_rec);
-
-	for (p = (union cx25840_ir_fifo_rec *) buf, i = 0; i < n; p++, i++) {
-
-		if ((p->hw_fifo_data & FIFO_RXTX_RTO) == FIFO_RXTX_RTO) {
-			/* Assume RTO was because of no IR light input */
-			u = 0;
-			w = 1;
-		} else {
-			u = (p->hw_fifo_data & FIFO_RXTX_LVL) ? 1 : 0;
-			if (invert)
-				u = u ? 0 : 1;
-			w = 0;
-		}
-
-		v = (unsigned) pulse_width_count_to_ns(
-				  (u16) (p->hw_fifo_data & FIFO_RXTX), divider);
-		if (v > IR_MAX_DURATION)
-			v = IR_MAX_DURATION;
-
-		init_ir_raw_event(&p->ir_core_data);
-		p->ir_core_data.pulse = u;
-		p->ir_core_data.duration = v;
-		p->ir_core_data.timeout = w;
-
-		v4l2_dbg(2, ir_debug, sd, "rx read: %10u ns  %s  %s\n",
-			 v, u ? "mark" : "space", w ? "(timed out)" : "");
-		if (w)
-			v4l2_dbg(2, ir_debug, sd, "rx read: end of rx\n");
-	}
-	return 0;
-}
-
-static int cx25840_ir_rx_g_parameters(struct v4l2_subdev *sd,
-				      struct v4l2_subdev_ir_parameters *p)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	mutex_lock(&ir_state->rx_params_lock);
-	memcpy(p, &ir_state->rx_params,
-				      sizeof(struct v4l2_subdev_ir_parameters));
-	mutex_unlock(&ir_state->rx_params_lock);
-	return 0;
-}
-
-static int cx25840_ir_rx_shutdown(struct v4l2_subdev *sd)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-	struct i2c_client *c;
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	c = ir_state->c;
-	mutex_lock(&ir_state->rx_params_lock);
-
-	/* Disable or slow down all IR Rx circuits and counters */
-	irqenable_rx(sd, 0);
-	control_rx_enable(c, false);
-	control_rx_demodulation_enable(c, false);
-	control_rx_s_edge_detection(c, CNTRL_EDG_NONE);
-	filter_rx_s_min_width(c, 0);
-	cx25840_write4(c, CX25840_IR_RXCLK_REG, RXCLK_RCD);
-
-	ir_state->rx_params.shutdown = true;
-
-	mutex_unlock(&ir_state->rx_params_lock);
-	return 0;
-}
-
-static int cx25840_ir_rx_s_parameters(struct v4l2_subdev *sd,
-				      struct v4l2_subdev_ir_parameters *p)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-	struct i2c_client *c;
-	struct v4l2_subdev_ir_parameters *o;
-	u16 rxclk_divider;
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	if (p->shutdown)
-		return cx25840_ir_rx_shutdown(sd);
-
-	if (p->mode != V4L2_SUBDEV_IR_MODE_PULSE_WIDTH)
-		return -ENOSYS;
-
-	c = ir_state->c;
-	o = &ir_state->rx_params;
-
-	mutex_lock(&ir_state->rx_params_lock);
-
-	o->shutdown = p->shutdown;
-
-	p->mode = V4L2_SUBDEV_IR_MODE_PULSE_WIDTH;
-	o->mode = p->mode;
-
-	p->bytes_per_data_element = sizeof(union cx25840_ir_fifo_rec);
-	o->bytes_per_data_element = p->bytes_per_data_element;
-
-	/* Before we tweak the hardware, we have to disable the receiver */
-	irqenable_rx(sd, 0);
-	control_rx_enable(c, false);
-
-	control_rx_demodulation_enable(c, p->modulation);
-	o->modulation = p->modulation;
-
-	if (p->modulation) {
-		p->carrier_freq = rxclk_rx_s_carrier(c, p->carrier_freq,
-						     &rxclk_divider);
-
-		o->carrier_freq = p->carrier_freq;
-
-		p->duty_cycle = 50;
-		o->duty_cycle = p->duty_cycle;
-
-		control_rx_s_carrier_window(c, p->carrier_freq,
-					    &p->carrier_range_lower,
-					    &p->carrier_range_upper);
-		o->carrier_range_lower = p->carrier_range_lower;
-		o->carrier_range_upper = p->carrier_range_upper;
-
-		p->max_pulse_width =
-			(u32) pulse_width_count_to_ns(FIFO_RXTX, rxclk_divider);
-	} else {
-		p->max_pulse_width =
-			    rxclk_rx_s_max_pulse_width(c, p->max_pulse_width,
-						       &rxclk_divider);
-	}
-	o->max_pulse_width = p->max_pulse_width;
-	atomic_set(&ir_state->rxclk_divider, rxclk_divider);
-
-	p->noise_filter_min_width =
-			    filter_rx_s_min_width(c, p->noise_filter_min_width);
-	o->noise_filter_min_width = p->noise_filter_min_width;
-
-	p->resolution = clock_divider_to_resolution(rxclk_divider);
-	o->resolution = p->resolution;
-
-	/* FIXME - make this dependent on resolution for better performance */
-	control_rx_irq_watermark(c, RX_FIFO_HALF_FULL);
-
-	control_rx_s_edge_detection(c, CNTRL_EDG_BOTH);
-
-	o->invert_level = p->invert_level;
-	atomic_set(&ir_state->rx_invert, p->invert_level);
-
-	o->interrupt_enable = p->interrupt_enable;
-	o->enable = p->enable;
-	if (p->enable) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&ir_state->rx_kfifo_lock, flags);
-		kfifo_reset(&ir_state->rx_kfifo);
-		spin_unlock_irqrestore(&ir_state->rx_kfifo_lock, flags);
-		if (p->interrupt_enable)
-			irqenable_rx(sd, IRQEN_RSE | IRQEN_RTE | IRQEN_ROE);
-		control_rx_enable(c, p->enable);
-	}
-
-	mutex_unlock(&ir_state->rx_params_lock);
-	return 0;
-}
-
-/* Transmitter */
-static int cx25840_ir_tx_write(struct v4l2_subdev *sd, u8 *buf, size_t count,
-			       ssize_t *num)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-#if 0
-	/*
-	 * FIXME - the code below is an incomplete and untested sketch of what
-	 * may need to be done.  The critical part is to get 4 (or 8) pulses
-	 * from the tx_kfifo, or converted from ns to the proper units from the
-	 * input, and push them off to the hardware Tx FIFO right away, if the
-	 * HW TX fifo needs service.  The rest can be pushed to the tx_kfifo in
-	 * a less critical timeframe.  Also watch out for overruning the
-	 * tx_kfifo - don't let it happen and let the caller know not all his
-	 * pulses were written.
-	 */
-	u32 *ns_pulse = (u32 *) buf;
-	unsigned int n;
-	u32 fifo_pulse[FIFO_TX_DEPTH];
-	u32 mark;
-
-	/* Compute how much we can fit in the tx kfifo */
-	n = CX25840_IR_TX_KFIFO_SIZE - kfifo_len(ir_state->tx_kfifo);
-	n = min(n, (unsigned int) count);
-	n /= sizeof(u32);
-
-	/* FIXME - turn on Tx Fifo service interrupt
-	 * check hardware fifo level, and other stuff
-	 */
-	for (i = 0; i < n; ) {
-		for (j = 0; j < FIFO_TX_DEPTH / 2 && i < n; j++) {
-			mark = ns_pulse[i] & LEVEL_MASK;
-			fifo_pulse[j] = ns_to_pulse_width_count(
-					 ns_pulse[i] &
-					       ~LEVEL_MASK,
-					 ir_state->txclk_divider);
-			if (mark)
-				fifo_pulse[j] &= FIFO_RXTX_LVL;
-			i++;
-		}
-		kfifo_put(ir_state->tx_kfifo, (u8 *) fifo_pulse,
-							       j * sizeof(u32));
-	}
-	*num = n * sizeof(u32);
-#else
-	/* For now enable the Tx FIFO Service interrupt & pretend we did work */
-	irqenable_tx(sd, IRQEN_TSE);
-	*num = count;
-#endif
-	return 0;
-}
-
-static int cx25840_ir_tx_g_parameters(struct v4l2_subdev *sd,
-				      struct v4l2_subdev_ir_parameters *p)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	mutex_lock(&ir_state->tx_params_lock);
-	memcpy(p, &ir_state->tx_params,
-				      sizeof(struct v4l2_subdev_ir_parameters));
-	mutex_unlock(&ir_state->tx_params_lock);
-	return 0;
-}
-
-static int cx25840_ir_tx_shutdown(struct v4l2_subdev *sd)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-	struct i2c_client *c;
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	c = ir_state->c;
-	mutex_lock(&ir_state->tx_params_lock);
-
-	/* Disable or slow down all IR Tx circuits and counters */
-	irqenable_tx(sd, 0);
-	control_tx_enable(c, false);
-	control_tx_modulation_enable(c, false);
-	cx25840_write4(c, CX25840_IR_TXCLK_REG, TXCLK_TCD);
-
-	ir_state->tx_params.shutdown = true;
-
-	mutex_unlock(&ir_state->tx_params_lock);
-	return 0;
-}
-
-static int cx25840_ir_tx_s_parameters(struct v4l2_subdev *sd,
-				      struct v4l2_subdev_ir_parameters *p)
-{
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-	struct i2c_client *c;
-	struct v4l2_subdev_ir_parameters *o;
-	u16 txclk_divider;
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	if (p->shutdown)
-		return cx25840_ir_tx_shutdown(sd);
-
-	if (p->mode != V4L2_SUBDEV_IR_MODE_PULSE_WIDTH)
-		return -ENOSYS;
-
-	c = ir_state->c;
-	o = &ir_state->tx_params;
-	mutex_lock(&ir_state->tx_params_lock);
-
-	o->shutdown = p->shutdown;
-
-	p->mode = V4L2_SUBDEV_IR_MODE_PULSE_WIDTH;
-	o->mode = p->mode;
-
-	p->bytes_per_data_element = sizeof(union cx25840_ir_fifo_rec);
-	o->bytes_per_data_element = p->bytes_per_data_element;
-
-	/* Before we tweak the hardware, we have to disable the transmitter */
-	irqenable_tx(sd, 0);
-	control_tx_enable(c, false);
-
-	control_tx_modulation_enable(c, p->modulation);
-	o->modulation = p->modulation;
-
-	if (p->modulation) {
-		p->carrier_freq = txclk_tx_s_carrier(c, p->carrier_freq,
-						     &txclk_divider);
-		o->carrier_freq = p->carrier_freq;
-
-		p->duty_cycle = cduty_tx_s_duty_cycle(c, p->duty_cycle);
-		o->duty_cycle = p->duty_cycle;
-
-		p->max_pulse_width =
-			(u32) pulse_width_count_to_ns(FIFO_RXTX, txclk_divider);
-	} else {
-		p->max_pulse_width =
-			    txclk_tx_s_max_pulse_width(c, p->max_pulse_width,
-						       &txclk_divider);
-	}
-	o->max_pulse_width = p->max_pulse_width;
-	atomic_set(&ir_state->txclk_divider, txclk_divider);
-
-	p->resolution = clock_divider_to_resolution(txclk_divider);
-	o->resolution = p->resolution;
-
-	/* FIXME - make this dependent on resolution for better performance */
-	control_tx_irq_watermark(c, TX_FIFO_HALF_EMPTY);
-
-	control_tx_polarity_invert(c, p->invert_carrier_sense);
-	o->invert_carrier_sense = p->invert_carrier_sense;
-
-	/*
-	 * FIXME: we don't have hardware help for IO pin level inversion
-	 * here like we have on the CX23888.
-	 * Act on this with some mix of logical inversion of data levels,
-	 * carrier polarity, and carrier duty cycle.
-	 */
-	o->invert_level = p->invert_level;
-
-	o->interrupt_enable = p->interrupt_enable;
-	o->enable = p->enable;
-	if (p->enable) {
-		/* reset tx_fifo here */
-		if (p->interrupt_enable)
-			irqenable_tx(sd, IRQEN_TSE);
-		control_tx_enable(c, p->enable);
-	}
-
-	mutex_unlock(&ir_state->tx_params_lock);
-	return 0;
-}
-
-
-/*
- * V4L2 Subdevice Core Ops support
- */
-int cx25840_ir_log_status(struct v4l2_subdev *sd)
-{
-	struct cx25840_state *state = to_state(sd);
-	struct i2c_client *c = state->c;
-	char *s;
-	int i, j;
-	u32 cntrl, txclk, rxclk, cduty, stats, irqen, filtr;
-
-	/* The CX23888 chip doesn't have an IR controller on the A/V core */
-	if (is_cx23888(state))
-		return 0;
-
-	cntrl = cx25840_read4(c, CX25840_IR_CNTRL_REG);
-	txclk = cx25840_read4(c, CX25840_IR_TXCLK_REG) & TXCLK_TCD;
-	rxclk = cx25840_read4(c, CX25840_IR_RXCLK_REG) & RXCLK_RCD;
-	cduty = cx25840_read4(c, CX25840_IR_CDUTY_REG) & CDUTY_CDC;
-	stats = cx25840_read4(c, CX25840_IR_STATS_REG);
-	irqen = cx25840_read4(c, CX25840_IR_IRQEN_REG);
-	if (is_cx23885(state) || is_cx23887(state))
-		irqen ^= IRQEN_MSK;
-	filtr = cx25840_read4(c, CX25840_IR_FILTR_REG) & FILTR_LPF;
-
-	v4l2_info(sd, "IR Receiver:\n");
-	v4l2_info(sd, "\tEnabled:                           %s\n",
-		  cntrl & CNTRL_RXE ? "yes" : "no");
-	v4l2_info(sd, "\tDemodulation from a carrier:       %s\n",
-		  cntrl & CNTRL_DMD ? "enabled" : "disabled");
-	v4l2_info(sd, "\tFIFO:                              %s\n",
-		  cntrl & CNTRL_RFE ? "enabled" : "disabled");
-	switch (cntrl & CNTRL_EDG) {
-	case CNTRL_EDG_NONE:
-		s = "disabled";
-		break;
-	case CNTRL_EDG_FALL:
-		s = "falling edge";
-		break;
-	case CNTRL_EDG_RISE:
-		s = "rising edge";
-		break;
-	case CNTRL_EDG_BOTH:
-		s = "rising & falling edges";
-		break;
-	default:
-		s = "??? edge";
-		break;
-	}
-	v4l2_info(sd, "\tPulse timers' start/stop trigger:  %s\n", s);
-	v4l2_info(sd, "\tFIFO data on pulse timer overflow: %s\n",
-		  cntrl & CNTRL_R ? "not loaded" : "overflow marker");
-	v4l2_info(sd, "\tFIFO interrupt watermark:          %s\n",
-		  cntrl & CNTRL_RIC ? "not empty" : "half full or greater");
-	v4l2_info(sd, "\tLoopback mode:                     %s\n",
-		  cntrl & CNTRL_LBM ? "loopback active" : "normal receive");
-	if (cntrl & CNTRL_DMD) {
-		v4l2_info(sd, "\tExpected carrier (16 clocks):      %u Hz\n",
-			  clock_divider_to_carrier_freq(rxclk));
-		switch (cntrl & CNTRL_WIN) {
-		case CNTRL_WIN_3_3:
-			i = 3;
-			j = 3;
-			break;
-		case CNTRL_WIN_4_3:
-			i = 4;
-			j = 3;
-			break;
-		case CNTRL_WIN_3_4:
-			i = 3;
-			j = 4;
-			break;
-		case CNTRL_WIN_4_4:
-			i = 4;
-			j = 4;
-			break;
-		default:
-			i = 0;
-			j = 0;
-			break;
-		}
-		v4l2_info(sd, "\tNext carrier edge window:          16 clocks "
-			  "-%1d/+%1d, %u to %u Hz\n", i, j,
-			  clock_divider_to_freq(rxclk, 16 + j),
-			  clock_divider_to_freq(rxclk, 16 - i));
-	}
-	v4l2_info(sd, "\tMax measurable pulse width:        %u us, %llu ns\n",
-		  pulse_width_count_to_us(FIFO_RXTX, rxclk),
-		  pulse_width_count_to_ns(FIFO_RXTX, rxclk));
-	v4l2_info(sd, "\tLow pass filter:                   %s\n",
-		  filtr ? "enabled" : "disabled");
-	if (filtr)
-		v4l2_info(sd, "\tMin acceptable pulse width (LPF):  %u us, "
-			  "%u ns\n",
-			  lpf_count_to_us(filtr),
-			  lpf_count_to_ns(filtr));
-	v4l2_info(sd, "\tPulse width timer timed-out:       %s\n",
-		  stats & STATS_RTO ? "yes" : "no");
-	v4l2_info(sd, "\tPulse width timer time-out intr:   %s\n",
-		  irqen & IRQEN_RTE ? "enabled" : "disabled");
-	v4l2_info(sd, "\tFIFO overrun:                      %s\n",
-		  stats & STATS_ROR ? "yes" : "no");
-	v4l2_info(sd, "\tFIFO overrun interrupt:            %s\n",
-		  irqen & IRQEN_ROE ? "enabled" : "disabled");
-	v4l2_info(sd, "\tBusy:                              %s\n",
-		  stats & STATS_RBY ? "yes" : "no");
-	v4l2_info(sd, "\tFIFO service requested:            %s\n",
-		  stats & STATS_RSR ? "yes" : "no");
-	v4l2_info(sd, "\tFIFO service request interrupt:    %s\n",
-		  irqen & IRQEN_RSE ? "enabled" : "disabled");
-
-	v4l2_info(sd, "IR Transmitter:\n");
-	v4l2_info(sd, "\tEnabled:                           %s\n",
-		  cntrl & CNTRL_TXE ? "yes" : "no");
-	v4l2_info(sd, "\tModulation onto a carrier:         %s\n",
-		  cntrl & CNTRL_MOD ? "enabled" : "disabled");
-	v4l2_info(sd, "\tFIFO:                              %s\n",
-		  cntrl & CNTRL_TFE ? "enabled" : "disabled");
-	v4l2_info(sd, "\tFIFO interrupt watermark:          %s\n",
-		  cntrl & CNTRL_TIC ? "not empty" : "half full or less");
-	v4l2_info(sd, "\tCarrier polarity:                  %s\n",
-		  cntrl & CNTRL_CPL ? "space:burst mark:noburst"
-				    : "space:noburst mark:burst");
-	if (cntrl & CNTRL_MOD) {
-		v4l2_info(sd, "\tCarrier (16 clocks):               %u Hz\n",
-			  clock_divider_to_carrier_freq(txclk));
-		v4l2_info(sd, "\tCarrier duty cycle:                %2u/16\n",
-			  cduty + 1);
-	}
-	v4l2_info(sd, "\tMax pulse width:                   %u us, %llu ns\n",
-		  pulse_width_count_to_us(FIFO_RXTX, txclk),
-		  pulse_width_count_to_ns(FIFO_RXTX, txclk));
-	v4l2_info(sd, "\tBusy:                              %s\n",
-		  stats & STATS_TBY ? "yes" : "no");
-	v4l2_info(sd, "\tFIFO service requested:            %s\n",
-		  stats & STATS_TSR ? "yes" : "no");
-	v4l2_info(sd, "\tFIFO service request interrupt:    %s\n",
-		  irqen & IRQEN_TSE ? "enabled" : "disabled");
-
-	return 0;
-}
-
-
-const struct v4l2_subdev_ir_ops cx25840_ir_ops = {
-	.rx_read = cx25840_ir_rx_read,
-	.rx_g_parameters = cx25840_ir_rx_g_parameters,
-	.rx_s_parameters = cx25840_ir_rx_s_parameters,
-
-	.tx_write = cx25840_ir_tx_write,
-	.tx_g_parameters = cx25840_ir_tx_g_parameters,
-	.tx_s_parameters = cx25840_ir_tx_s_parameters,
-};
-
-
-static const struct v4l2_subdev_ir_parameters default_rx_params = {
-	.bytes_per_data_element = sizeof(union cx25840_ir_fifo_rec),
-	.mode = V4L2_SUBDEV_IR_MODE_PULSE_WIDTH,
-
-	.enable = false,
-	.interrupt_enable = false,
-	.shutdown = true,
-
-	.modulation = true,
-	.carrier_freq = 36000, /* 36 kHz - RC-5, and RC-6 carrier */
-
-	/* RC-5: 666,667 ns = 1/36 kHz * 32 cycles * 1 mark * 0.75 */
-	/* RC-6: 333,333 ns = 1/36 kHz * 16 cycles * 1 mark * 0.75 */
-	.noise_filter_min_width = 333333, /* ns */
-	.carrier_range_lower = 35000,
-	.carrier_range_upper = 37000,
-	.invert_level = false,
-};
-
-static const struct v4l2_subdev_ir_parameters default_tx_params = {
-	.bytes_per_data_element = sizeof(union cx25840_ir_fifo_rec),
-	.mode = V4L2_SUBDEV_IR_MODE_PULSE_WIDTH,
-
-	.enable = false,
-	.interrupt_enable = false,
-	.shutdown = true,
-
-	.modulation = true,
-	.carrier_freq = 36000, /* 36 kHz - RC-5 carrier */
-	.duty_cycle = 25,      /* 25 %   - RC-5 carrier */
-	.invert_level = false,
-	.invert_carrier_sense = false,
-};
-
-int cx25840_ir_probe(struct v4l2_subdev *sd)
-{
-	struct cx25840_state *state = to_state(sd);
-	struct cx25840_ir_state *ir_state;
-	struct v4l2_subdev_ir_parameters default_params;
-
-	/* Only init the IR controller for the CX2388[57] AV Core for now */
-	if (!(is_cx23885(state) || is_cx23887(state)))
-		return 0;
-
-	ir_state = kzalloc(sizeof(struct cx25840_ir_state), GFP_KERNEL);
-	if (ir_state == NULL)
-		return -ENOMEM;
-
-	spin_lock_init(&ir_state->rx_kfifo_lock);
-	if (kfifo_alloc(&ir_state->rx_kfifo,
-			CX25840_IR_RX_KFIFO_SIZE, GFP_KERNEL)) {
-		kfree(ir_state);
-		return -ENOMEM;
-	}
-
-	ir_state->c = state->c;
-	state->ir_state = ir_state;
-
-	/* Ensure no interrupts arrive yet */
-	if (is_cx23885(state) || is_cx23887(state))
-		cx25840_write4(ir_state->c, CX25840_IR_IRQEN_REG, IRQEN_MSK);
-	else
-		cx25840_write4(ir_state->c, CX25840_IR_IRQEN_REG, 0);
-
-	mutex_init(&ir_state->rx_params_lock);
-	memcpy(&default_params, &default_rx_params,
-		       sizeof(struct v4l2_subdev_ir_parameters));
-	v4l2_subdev_call(sd, ir, rx_s_parameters, &default_params);
-
-	mutex_init(&ir_state->tx_params_lock);
-	memcpy(&default_params, &default_tx_params,
-		       sizeof(struct v4l2_subdev_ir_parameters));
-	v4l2_subdev_call(sd, ir, tx_s_parameters, &default_params);
-
-	return 0;
-}
-
-int cx25840_ir_remove(struct v4l2_subdev *sd)
-{
-	struct cx25840_state *state = to_state(sd);
-	struct cx25840_ir_state *ir_state = to_ir_state(sd);
-
-	if (ir_state == NULL)
-		return -ENODEV;
-
-	cx25840_ir_rx_shutdown(sd);
-	cx25840_ir_tx_shutdown(sd);
-
-	kfifo_free(&ir_state->rx_kfifo);
-	kfree(ir_state);
-	state->ir_state = NULL;
-	return 0;
-}