selphy_print/backend_shinkos1245.c

/*
 *   Shinko/Sinfonia CHC-S1245 CUPS backend -- libusb-1.0 version
 *
 *   (c) 2013-2015 Solomon Peachy <pizza@shaftnet.org>
 *
 *   Low-level documentation was provided by Sinfonia, Inc.  Thank you!
 *
 *   The latest version of this program can be found at:
 *
 *     http://git.shaftnet.org/cgit/selphy_print.git
 *
 *   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 3 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *          [http://www.gnu.org/licenses/gpl-3.0.html]
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>

#define BACKEND shinkos1245_backend

#include "backend_common.h"

/* Structure of printjob header.  All fields are LITTLE ENDIAN */
struct s1245_printjob_hdr {
	uint32_t len1;   /* Fixed at 0x10 */
	uint32_t model;  /* Equal to the printer model (eg '1245' or '2145' decimal) */
	uint32_t unk2;   /* Null */
	uint32_t unk3;   /* Fixed at 0x01 */

	uint32_t len2;   /* Fixed at 0x64 */
	uint32_t unk5;   /* Null */
	uint32_t media;  /* Fixed at 0x10 */
	uint32_t unk6;   /* Null */

	uint32_t method; /* Print Method */
	uint32_t mode;   /* Print Mode */
	uint32_t unk7;   /* Null */
	 int32_t mattedepth; /* 0x7fffffff for glossy, 0x00 +- 25 for matte */

	uint32_t dust;   /* Dust control */
	uint32_t columns;
	uint32_t rows;
	uint32_t copies;

	uint32_t unk10;  /* Null */
	uint32_t unk11;  /* Null */
	uint32_t unk12;  /* Null */
	uint32_t unk13;  /* 0xceffffff */

	uint32_t unk14;  /* Null */
	uint32_t unk15;  /* 0xceffffff */
	uint32_t dpi; /* Fixed at '300' (decimal) */
	uint32_t unk16;  /* 0xceffffff */

	uint32_t unk17;  /* Null */
	uint32_t unk18;  /* 0xceffffff */
	uint32_t unk19;  /* Null */
	uint32_t unk20;  /* Null */

	uint32_t unk21;  /* Null */
} __attribute__((packed));

/* Printer data structures */
struct shinkos1245_cmd_hdr {
	uint8_t prefix; /* 0x03 */
	uint8_t hdr[4]; /* 0x1b 0x43 0x48 0x43 */
} __attribute__((packed));

/* Get Printer ID */
struct shinkos1245_cmd_getid {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1]; /* 0x12 */
	uint8_t pad[11];
} __attribute__((packed));

struct shinkos1245_resp_getid {
	uint8_t id;       /* 0x00 */
	uint8_t data[23]; /* padded with 0x20 (space) */
	uint8_t reserved[8]; // XXX actual serial number?
} __attribute__((packed));

/* Set Printer ID -- Returns Status */
struct shinkos1245_cmd_setid {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[2];   /* 0x0a 0x22 */
	uint8_t id;       /* 0x00 */
	uint8_t data[23]; /* pad with 0x20 (space) */
} __attribute__((packed));

/* Print -- Returns Status */
struct shinkos1245_cmd_print {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t  cmd[2];   /* 0x0a 0x00 */
	uint8_t  id;       /* 1-255 */
	uint16_t count;    /* # Copies in BCD, 1-9999 */
	uint16_t columns;  /* Fixed at 2446 */
	uint16_t rows;
	uint8_t  media;    /* Fixed at 0x10 */
	uint8_t  mode;     /* dust removal and lamination mode */
	uint8_t  combo;    /* aka "print method" in the spool file */
} __attribute__((packed));

/* Get Status */
struct shinkos1245_cmd_getstatus {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1];   /* 0x03 */
	uint8_t pad[10]; 
} __attribute__((packed));

struct shinkos1245_resp_status {
	uint8_t  code;
	uint8_t  print_status;
	struct {
		uint8_t  status1;
		uint32_t status2; /* BE */
		uint8_t  error;
	} state;
	struct {
		uint32_t lifetime;  /* BE */
		uint32_t maint;     /* BE */
		uint32_t media;     /* BE */
		uint32_t cutter;    /* BE */
		uint8_t  reserved;
		uint8_t  ver_boot;
		uint8_t  ver_ctrl;
		uint8_t  control_flag; // 0x00 == epson, 0x01 == cypress
	} counters;
	struct {
		uint16_t main_boot;
		uint16_t main_control;
		uint16_t dsp_boot;
		uint16_t dsp_control;
	} versions;
	struct {
		uint8_t  bank1_id;
		uint8_t  bank2_id;
		uint16_t bank1_remain;   /* BE */
		uint16_t bank1_complete; /* BE */
		uint16_t bank1_spec;     /* BE */
		uint16_t bank2_remain;   /* BE */
		uint16_t bank2_complete; /* BE */
		uint16_t bank2_spec;     /* BE */
	} counters2;
	uint8_t curve_status;
} __attribute__((packed));

enum {
	CMD_CODE_OK = 1,
	CMD_CODE_BAD = 2,
};

enum {
	STATUS_PRINTING = 1,
	STATUS_IDLE = 2,
};

enum {
	STATE_STATUS1_STANDBY = 1,
	STATE_STATUS1_ERROR = 2,
	STATE_STATUS1_WAIT = 3,
};

#define STATE_STANDBY_STATUS2 0x0

enum {
	WAIT_STATUS2_INIT = 0,
	WAIT_STATUS2_RIBBON = 1,
	WAIT_STATUS2_THERMAL = 2,
	WAIT_STATUS2_OPERATING = 3,
	WAIT_STATUS2_BUSY = 4,
};

#define ERROR_STATUS2_CTRL_CIRCUIT   (1<<31)
#define ERROR_STATUS2_MECHANISM_CTRL (1<<30)
#define ERROR_STATUS2_SENSOR         (1<<13)
#define ERROR_STATUS2_COVER_OPEN     (1<<12)
#define ERROR_STATUS2_TEMP_SENSOR    (1<<9)
#define ERROR_STATUS2_PAPER_JAM      (1<<8)
#define ERROR_STATUS2_PAPER_EMPTY    (1<<6)
#define ERROR_STATUS2_RIBBON_ERR     (1<<4)

enum {
	CTRL_CIR_ERROR_EEPROM1  = 0x01,
	CTRL_CIR_ERROR_EEPROM2  = 0x02,
	CTRL_CIR_ERROR_DSP      = 0x04,
	CTRL_CIR_ERROR_CRC_MAIN = 0x06,
	CTRL_CIR_ERROR_DL_MAIN  = 0x07,
	CTRL_CIR_ERROR_CRC_DSP  = 0x08,
	CTRL_CIR_ERROR_DL_DSP   = 0x09,
	CTRL_CIR_ERROR_ASIC     = 0x0a,
	CTRL_CIR_ERROR_DRAM     = 0x0b,
	CTRL_CIR_ERROR_DSPCOMM  = 0x29,
};

enum {
	MECH_ERROR_HEAD_UP            = 0x01,
	MECH_ERROR_HEAD_DOWN          = 0x02,
	MECH_ERROR_MAIN_PINCH_UP      = 0x03,
	MECH_ERROR_MAIN_PINCH_DOWN    = 0x04,
	MECH_ERROR_SUB_PINCH_UP       = 0x05,
	MECH_ERROR_SUB_PINCH_DOWN     = 0x06,
	MECH_ERROR_FEEDIN_PINCH_UP    = 0x07,
	MECH_ERROR_FEEDIN_PINCH_DOWN  = 0x08,
	MECH_ERROR_FEEDOUT_PINCH_UP   = 0x09,
	MECH_ERROR_FEEDOUT_PINCH_DOWN = 0x0a,
	MECH_ERROR_CUTTER_LR          = 0x0b,
	MECH_ERROR_CUTTER_RL          = 0x0c,
};

enum {
	SENSOR_ERROR_CUTTER           = 0x05,
	SENSOR_ERROR_HEAD_DOWN        = 0x09,
	SENSOR_ERROR_HEAD_UP          = 0x0a,
	SENSOR_ERROR_MAIN_PINCH_DOWN  = 0x0b,
	SENSOR_ERROR_MAIN_PINCH_UP    = 0x0c,
	SENSOR_ERROR_FEED_PINCH_DOWN  = 0x0d,
	SENSOR_ERROR_FEED_PINCH_UP    = 0x0e,
	SENSOR_ERROR_EXIT_PINCH_DOWN  = 0x0f,
	SENSOR_ERROR_EXIT_PINCH_UP    = 0x10,
	SENSOR_ERROR_LEFT_CUTTER      = 0x11,
	SENSOR_ERROR_RIGHT_CUTTER     = 0x12,
	SENSOR_ERROR_CENTER_CUTTER    = 0x13,
	SENSOR_ERROR_UPPER_CUTTER     = 0x14,
	SENSOR_ERROR_PAPER_FEED_COVER = 0x15,
};

enum {
	TEMP_SENSOR_ERROR_HEAD_HIGH = 0x01,
	TEMP_SENSOR_ERROR_HEAD_LOW  = 0x02,
	TEMP_SENSOR_ERROR_ENV_HIGH  = 0x03,
	TEMP_SENSOR_ERROR_ENV_LOW   = 0x04,
};

enum {
	COVER_OPEN_ERROR_UPPER = 0x01,
	COVER_OPEN_ERROR_LOWER = 0x02,
};

enum {
	PAPER_EMPTY_ERROR = 0x00,
};

enum {
	RIBBON_ERROR = 0x00,
};

enum {
	CURVE_TABLE_STATUS_INITIAL = 0x00,
	CURVE_TABLE_STATUS_USERSET = 0x01,
	CURVE_TABLE_STATUS_CURRENT = 0x02,
};

// XXX Paper jam has 0x01 -> 0xff as error codes

/* Query media info */
struct shinkos1245_cmd_getmedia {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1];   /* 0x1a/0x2a/0x3a for A/B/C */
	uint8_t pad[10];
} __attribute__((packed));

struct shinkos1245_mediadesc {
	uint8_t  code;  /* Fixed at 0x10 */
	uint16_t columns; /* BE */
	uint16_t rows;    /* BE */
	uint8_t  type;       /* MEDIA_TYPE_* */
	uint8_t  print_type; /* aka "print method" in the spool file */
	uint8_t  reserved[3];
} __attribute__((packed));

#define NUM_MEDIAS 5 /* Maximum per message */

struct shinkos1245_resp_media {
	uint8_t  code;
	uint8_t  reserved[5];
	uint8_t  count;  /* 1-5? */
	struct shinkos1245_mediadesc data[NUM_MEDIAS];
} __attribute__((packed));

enum {
	MEDIA_TYPE_UNKNOWN = 0x00,
	MEDIA_TYPE_PAPER = 0x01,
};

enum {
	PRINT_TYPE_STANDARD = 0x00,
	PRINT_TYPE_8x5_2up  = 0x01,
	PRINT_TYPE_8x4_2up  = 0x02,
	PRINT_TYPE_8x6_8x4  = 0x03,
	PRINT_TYPE_8x5      = 0x04,
	PRINT_TYPE_8x4      = 0x05,
	PRINT_TYPE_8x6      = 0x06,
	PRINT_TYPE_8x6_2up  = 0x07,
	PRINT_TYPE_8x4_3up  = 0x08,
	PRINT_TYPE_8x8      = 0x09,
};

/* Cancel Job -- returns Status */
struct shinkos1245_cmd_canceljob {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1];   /* 0x13 */
	uint8_t id;       /* 1-255 */
	uint8_t pad[9];
} __attribute__((packed));

/* Reset printer -- returns Status */
struct shinkos1245_cmd_reset {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1];   /* 0xc0 */
	uint8_t pad[10];
} __attribute__((packed));

/* Tone curve manipulation -- returns Status */
struct shinkos1245_cmd_tone {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1];   /* 0xc0 */
	uint8_t tone[4];  /* 0x54 0x4f 0x4e 0x45 */
	uint8_t cmd2[1];  /* 0x72/0x77/0x65/0x20 for read/write/end/data */
	union {
		struct {
			uint8_t tone_table;
			uint8_t param_table;
			uint8_t pad[3];
		} read_write;
		struct {
			uint8_t pad[5];
		} end_data;
	};
} __attribute__((packed));

enum {
	TONE_TABLE_STANDARD = 0,
	TONE_TABLE_USER = 1,
	TONE_TABLE_CURRENT = 2,
};
enum {
	PARAM_TABLE_STANDARD = 1,
	PARAM_TABLE_FINE = 2,
};

#define TONE_CURVE_SIZE 1536
#define TONE_CURVE_DATA_BLOCK_SIZE 64
   
/* Query Model information */
struct shinkos1245_cmd_getmodel {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1];   /* 0x02 */
	uint8_t pad[10];
} __attribute__((packed));

struct shinkos1245_resp_getmodel {
	uint8_t vendor_id[4];
	uint8_t product_id[4];
	uint8_t strings[40];
} __attribute__((packed));


/* Query and Set Matte info, returns a Matte response */
struct shinkos1245_cmd_getmatte {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1]; /* 0x20 */
	uint8_t mode;   /* Fixed at 0x00 */
	uint8_t pad[9];
} __attribute__((packed));

struct shinkos1245_cmd_setmatte {
	struct shinkos1245_cmd_hdr hdr;
	uint8_t cmd[1]; /* 0x21 */
	uint8_t mode;   /* Fixed at 0x00 */
	 int8_t level;  /* -25->+25 */
	uint8_t pad[8];
} __attribute__((packed));

struct shinkos1245_resp_matte {
	uint8_t code;
	uint8_t mode;
	 int8_t level;
	uint8_t reserved[3];
} __attribute__((packed));

#define MATTE_MODE_MATTE 0x00

/* Private data stucture */
struct shinkos1245_ctx {
	struct libusb_device_handle *dev;
	uint8_t endp_up;
	uint8_t endp_down;
	int type;

	uint8_t jobid;

	struct s1245_printjob_hdr hdr;

	struct shinkos1245_mediadesc medias[15];
	int num_medias;

	uint8_t *databuf;
	int datalen;
	int tonecurve;
};

enum {
	S_IDLE = 0,
	S_PRINTER_READY_CMD,
	S_PRINTER_SENT_DATA,
	S_FINISHED,
};


/* Basic printer I/O stuffs */
static void shinkos1245_fill_hdr(struct shinkos1245_cmd_hdr *hdr)
{
	hdr->prefix = 0x03;
	hdr->hdr[0] = 0x1b;
	hdr->hdr[1] = 0x43;
	hdr->hdr[2] = 0x48;
	hdr->hdr[3] = 0x43;
}

static int shinkos1245_do_cmd(struct shinkos1245_ctx *ctx,
			      void *cmd, int cmd_len,
			      void *resp, int resp_len,
			      int *actual_len)
{
	int ret;

	/* Write command */
	if ((ret = send_data(ctx->dev, ctx->endp_down,
			     cmd, cmd_len)))
		return (ret < 0) ? ret : -99;

	/* Read response */
	ret = read_data(ctx->dev, ctx->endp_up,
			resp, resp_len, actual_len);
	if (ret < 0)
		return ret;
	if (*actual_len < resp_len) {
		ERROR("Short read! (%d/%d))\n", *actual_len, resp_len);
		return -99;
	}

	return ret;
}

static int shinkos1245_get_status(struct shinkos1245_ctx *ctx,
				  struct shinkos1245_resp_status *resp)
{
	struct shinkos1245_cmd_getstatus cmd;
	int ret, num;

	shinkos1245_fill_hdr(&cmd.hdr);
	cmd.cmd[0] = 0x03;
	memset(cmd.pad, 0, sizeof(cmd.pad));

	ret = shinkos1245_do_cmd(ctx, &cmd, sizeof(cmd),
				resp, sizeof(*resp), &num);
	if (ret < 0) {
		ERROR("Failed to execute GET_STATUS command\n");
		return ret;
	}
	if (resp->code != CMD_CODE_OK) {
		ERROR("Bad return code on GET_STATUS (%02x)\n",
		      resp->code);
		return -99;
	}

	return 0;
}

static int shinkos1245_get_media(struct shinkos1245_ctx *ctx)
{
	struct shinkos1245_cmd_getmedia cmd;
	struct shinkos1245_resp_media resp;
	int i, j;
	int ret = 0, num;

	shinkos1245_fill_hdr(&cmd.hdr);
	memset(cmd.pad, 0, sizeof(cmd.pad));
	for (i = 1 ; i <= 3 ; i++) {
		cmd.cmd[0] = 0x0a || (i << 4);

		ret = shinkos1245_do_cmd(ctx, &cmd, sizeof(cmd),
					 &resp, sizeof(resp), &num);
		if (ret < 0) {
			ERROR("Failed to execute GET_MEDIA command\n");
			return ret;
		}
		if (resp.code != CMD_CODE_OK) {
			ERROR("Bad return code on GET_MEDIA (%02x)\n",
			      resp.code);
			return -99;
		}

		if (resp.count > NUM_MEDIAS)
			resp.count = NUM_MEDIAS;

		/* Store media info */
		for (j = 0; j < resp.count ; j++) {
			ctx->medias[ctx->num_medias].code = resp.data[j].code;
			ctx->medias[ctx->num_medias].columns = be16_to_cpu(resp.data[j].columns);
			ctx->medias[ctx->num_medias].rows = be16_to_cpu(resp.data[j].rows);
			ctx->medias[ctx->num_medias].type = resp.data[j].type;
			ctx->medias[ctx->num_medias].print_type = resp.data[j].print_type;
			ctx->num_medias++;
		}

		if (resp.count < 5)
			break;
	}
	return ret;
}

static int shinkos1245_get_printerid(struct shinkos1245_ctx *ctx,
				     struct shinkos1245_resp_getid *resp)
{
	struct shinkos1245_cmd_getid cmd;
	int ret, num;

	shinkos1245_fill_hdr(&cmd.hdr);
	cmd.cmd[0] = 0x12;
	memset(cmd.pad, 0, sizeof(cmd.pad));

	ret = shinkos1245_do_cmd(ctx, &cmd, sizeof(cmd),
				resp, sizeof(*resp), &num);
	if (ret < 0) {
		ERROR("Failed to execute GET_PRINTERID command\n");
		return ret;
	}

	return 0;
}

static int shinkos1245_set_printerid(struct shinkos1245_ctx *ctx,
				     char *id)
{
	struct shinkos1245_cmd_setid cmd;
	struct shinkos1245_resp_status sts;

	int ret, num;
	int i;

	shinkos1245_fill_hdr(&cmd.hdr);
	cmd.cmd[0] = 0x0a;
	cmd.cmd[1] = 0x22;

	for (i = 0 ; i < (int)sizeof(cmd.data) ; i++) {
		if (*id)
			cmd.data[i] = (uint8_t) *id;
		else
			cmd.data[i] = ' ';
	}
	ret = shinkos1245_do_cmd(ctx, &cmd, sizeof(cmd),
				 &sts, sizeof(sts), &num);
	if (ret < 0) {
		ERROR("Failed to execute SET_PRINTERID command\n");
		return ret;
	}
	if (sts.code != CMD_CODE_OK) {
		ERROR("Bad return code on SET_PRINTERID command\n");
		return -99;
	}
	return 0;
}

static int shinkos1245_canceljob(struct shinkos1245_ctx *ctx,
				 int id)
{
	struct shinkos1245_cmd_canceljob cmd;
	struct shinkos1245_resp_status sts;

	int ret, num;

	shinkos1245_fill_hdr(&cmd.hdr);
	cmd.cmd[0] = 0x13;
	cmd.id = id;

	ret = shinkos1245_do_cmd(ctx, &cmd, sizeof(cmd),
				 &sts, sizeof(sts), &num);
	if (ret < 0) {
		ERROR("Failed to execute CANCELJOB command\n");
		return ret;
	}
	if (sts.code != CMD_CODE_OK) {
		ERROR("Bad return code on CANCELJOB command\n");
		return -99;
	}
	return 0;
}

static int shinkos1245_set_matte(struct shinkos1245_ctx *ctx,
				 int intensity)
{
	struct shinkos1245_cmd_setmatte cmd;
	struct shinkos1245_resp_matte sts;

	int ret, num;

	shinkos1245_fill_hdr(&cmd.hdr);
	cmd.cmd[0] = 0x21;
	cmd.mode = MATTE_MODE_MATTE;
	cmd.level = intensity;

	ret = shinkos1245_do_cmd(ctx, &cmd, sizeof(cmd),
				 &sts, sizeof(sts), &num);
	if (ret < 0) {
		ERROR("Failed to execute SET_MATTE command\n");
		return ret;
	}
	if (sts.code == CMD_CODE_OK)
		return 0;
	if (sts.code == CMD_CODE_BAD)
		return 1;

	ERROR("Bad return code (%02x) on SET_MATTE command\n", sts.code);	
	return -99;
}

static int shinkos1245_get_matte(struct shinkos1245_ctx *ctx,
				 int *intensity)
{
	struct shinkos1245_cmd_getmatte cmd;
	struct shinkos1245_resp_matte sts;

	int ret, num;

	shinkos1245_fill_hdr(&cmd.hdr);
	cmd.cmd[0] = 0x20;
	cmd.mode = MATTE_MODE_MATTE;

	ret = shinkos1245_do_cmd(ctx, &cmd, sizeof(cmd),
				 &sts, sizeof(sts), &num);
	if (ret < 0) {
		ERROR("Failed to execute GET_MATTE command\n");
		return ret;
	}
	if (sts.code != CMD_CODE_OK) {
		ERROR("Bad return code (%02x) on GET_MATTE command\n", sts.code);
		return -99;
	}
	*intensity = sts.level;

	return 0;
}


/* Structure dumps */
static char *shinkos1245_status_str(struct shinkos1245_resp_status *resp)
{
	switch(resp->state.status1) {
	case STATE_STATUS1_STANDBY:
		return "Standby (Ready)";
	case STATE_STATUS1_WAIT:
		switch (resp->state.status2) {
		case WAIT_STATUS2_INIT:
			return "Wait (Initializing)";
		case WAIT_STATUS2_RIBBON:
			return "Wait (Ribbon Winding)";
		case WAIT_STATUS2_THERMAL:
			return "Wait (Thermal Protection)";
		case WAIT_STATUS2_OPERATING:
			return "Wait (Operating)";
		case WAIT_STATUS2_BUSY:
			return "Wait (Busy)";
		default:
			return "Wait (Unknown)";
		}
	case STATE_STATUS1_ERROR:
		switch (resp->state.status2) {
		case ERROR_STATUS2_CTRL_CIRCUIT:
			switch (resp->state.error) {
			case CTRL_CIR_ERROR_EEPROM1:
				return "Error (EEPROM1)";
			case CTRL_CIR_ERROR_EEPROM2:
				return "Error (EEPROM2)";
			case CTRL_CIR_ERROR_DSP:
				return "Error (DSP)";
			case CTRL_CIR_ERROR_CRC_MAIN:
				return "Error (Main CRC)";
			case CTRL_CIR_ERROR_DL_MAIN:
				return "Error (Main Download)";
			case CTRL_CIR_ERROR_CRC_DSP:
				return "Error (DSP CRC)";
			case CTRL_CIR_ERROR_DL_DSP:
				return "Error (DSP Download)";
			case CTRL_CIR_ERROR_ASIC:
				return "Error (ASIC)";
			case CTRL_CIR_ERROR_DRAM:
				return "Error (DRAM)";
			case CTRL_CIR_ERROR_DSPCOMM:
				return "Error (DSP Communincation)";
			default:
				return "Error (Unknown Circuit)";
			}
		case ERROR_STATUS2_MECHANISM_CTRL:
			switch (resp->state.error) {
			case MECH_ERROR_HEAD_UP:
				return "Error (Head Up Mechanism)";
			case MECH_ERROR_HEAD_DOWN:
				return "Error (Head Down Mechanism)";
			case MECH_ERROR_MAIN_PINCH_UP:
				return "Error (Main Pinch Up Mechanism)";
			case MECH_ERROR_MAIN_PINCH_DOWN:
				return "Error (Main Pinch Down Mechanism)";
			case MECH_ERROR_SUB_PINCH_UP:
				return "Error (Sub Pinch Up Mechanism)";
			case MECH_ERROR_SUB_PINCH_DOWN:
				return "Error (Sub Pinch Down Mechanism)";
			case MECH_ERROR_FEEDIN_PINCH_UP:
				return "Error (Feed-in Pinch Up Mechanism)";
			case MECH_ERROR_FEEDIN_PINCH_DOWN:
				return "Error (Feed-in Pinch Down Mechanism)";
			case MECH_ERROR_FEEDOUT_PINCH_UP:
				return "Error (Feed-out Pinch Up Mechanism)";
			case MECH_ERROR_FEEDOUT_PINCH_DOWN:
				return "Error (Feed-out Pinch Down Mechanism)";
			case MECH_ERROR_CUTTER_LR:
				return "Error (Left->Right Cutter)";
			case MECH_ERROR_CUTTER_RL:
				return "Error (Right->Left Cutter)";
			default:
				return "Error (Unknown Mechanism)";
			}
		case ERROR_STATUS2_SENSOR:
			switch (resp->state.error) {
			case SENSOR_ERROR_CUTTER:
				return "Error (Cutter Sensor)";
			case SENSOR_ERROR_HEAD_DOWN:
				return "Error (Head Down Sensor)";
			case SENSOR_ERROR_HEAD_UP:
				return "Error (Head Up Sensor)";
			case SENSOR_ERROR_MAIN_PINCH_DOWN:
				return "Error (Main Pinch Down Sensor)";
			case SENSOR_ERROR_MAIN_PINCH_UP:
				return "Error (Main Pinch Up Sensor)";
			case SENSOR_ERROR_FEED_PINCH_DOWN:
				return "Error (Feed Pinch Down Sensor)";
			case SENSOR_ERROR_FEED_PINCH_UP:
				return "Error (Feed Pinch Up Sensor)";
			case SENSOR_ERROR_EXIT_PINCH_DOWN:
				return "Error (Exit Pinch Up Sensor)";
			case SENSOR_ERROR_EXIT_PINCH_UP:
				return "Error (Exit Pinch Up Sensor)";
			case SENSOR_ERROR_LEFT_CUTTER:
				return "Error (Left Cutter Sensor)";
			case SENSOR_ERROR_RIGHT_CUTTER:
				return "Error (Right Cutter Sensor)";
			case SENSOR_ERROR_CENTER_CUTTER:
				return "Error (Center Cutter Sensor)";
			case SENSOR_ERROR_UPPER_CUTTER:
				return "Error (Upper Cutter Sensor)";
			case SENSOR_ERROR_PAPER_FEED_COVER:
				return "Error (Paper Feed Cover)";
			default:
				return "Error (Unknown Sensor)";
			}
		case ERROR_STATUS2_COVER_OPEN:
			switch (resp->state.error) {
			case COVER_OPEN_ERROR_UPPER:
				return "Error (Upper Cover Open)";
			case COVER_OPEN_ERROR_LOWER:
				return "Error (Lower Cover Open)";
			default:
				return "Error (Unknown Cover Open)";
			}
		case ERROR_STATUS2_TEMP_SENSOR:
			switch (resp->state.error) {
			case TEMP_SENSOR_ERROR_HEAD_HIGH:
				return "Error (Head Temperature High)";
			case TEMP_SENSOR_ERROR_HEAD_LOW:
				return "Error (Head Temperature Low)";
			case TEMP_SENSOR_ERROR_ENV_HIGH:
				return "Error (Environmental Temperature High)";
			case TEMP_SENSOR_ERROR_ENV_LOW:
				return "Error (Environmental Temperature Low)";
			default:
				return "Error (Unknown Temperature)";
			}
		case ERROR_STATUS2_PAPER_JAM:
			return "Error (Paper Jam)";
		case ERROR_STATUS2_PAPER_EMPTY:
			return "Error (Paper Empty)";
		case ERROR_STATUS2_RIBBON_ERR:
			return "Error (Ribbon)";
		default:
			return "Error (Unknown)";
		}
	default:
		return "Unknown!";
	}
}

static char* shinkos1245_tonecurves(int type, int table)
{
	switch (type) {
	case TONE_TABLE_STANDARD:
		switch (table) {
		case PARAM_TABLE_STANDARD:
			return "Standard/Standard";
		case PARAM_TABLE_FINE:
			return "Standard/Fine";
		default:
			return "Standard/Unknown";
		}
	case TONE_TABLE_USER:
		switch (table) {
		case PARAM_TABLE_STANDARD:
			return "User/Standard";
		case PARAM_TABLE_FINE:
			return "User/Fine";
		default:
			return "User/Unknown";
		}
	case TONE_TABLE_CURRENT:
		switch (table) {
		case PARAM_TABLE_STANDARD:
			return "Current/Standard";
		case PARAM_TABLE_FINE:
			return "Current/Fine";
		default:
			return "Current/Unknown";
		}
	default:
		return "Unknown";
	}
}

static void shinkos1245_dump_status(struct shinkos1245_resp_status *sts)
{
	char *detail;
	switch (sts->print_status) {
	case STATUS_PRINTING:
		detail = "Printing";
		break;
	case STATUS_IDLE:
		detail = "Idle";
		break;
	default:
		detail