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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /backend/genesys_gl846.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/genesys_gl846.c')
-rw-r--r--backend/genesys_gl846.c3704
1 files changed, 3704 insertions, 0 deletions
diff --git a/backend/genesys_gl846.c b/backend/genesys_gl846.c
new file mode 100644
index 0000000..5e1f0f4
--- /dev/null
+++ b/backend/genesys_gl846.c
@@ -0,0 +1,3704 @@
+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2012-2013 Stéphane Voltz <stef.dev@free.fr>
+
+
+ This file is part of the SANE package.
+
+ 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., 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, the authors of SANE give permission for
+ additional uses of the libraries contained in this release of SANE.
+
+ The exception is that, if you link a SANE library with other files
+ to produce an executable, this does not by itself cause the
+ resulting executable to be covered by the GNU General Public
+ License. Your use of that executable is in no way restricted on
+ account of linking the SANE library code into it.
+
+ This exception does not, however, invalidate any other reasons why
+ the executable file might be covered by the GNU General Public
+ License.
+
+ If you submit changes to SANE to the maintainers to be included in
+ a subsequent release, you agree by submitting the changes that
+ those changes may be distributed with this exception intact.
+
+ If you write modifications of your own for SANE, it is your choice
+ whether to permit this exception to apply to your modifications.
+ If you do not wish that, delete this exception notice.
+*/
+
+/** @file
+ *
+ * This file handles GL846 and GL845 ASICs since they are really close to each other.
+ */
+#undef BACKEND_NAME
+#define BACKEND_NAME genesys_gl846
+
+#include "genesys_gl846.h"
+
+/****************************************************************************
+ Low level function
+ ****************************************************************************/
+
+/* ------------------------------------------------------------------------ */
+/* Read and write RAM, registers and AFE */
+/* ------------------------------------------------------------------------ */
+
+
+/** @brief read scanned data
+ * Read in 0xeff0 maximum sized blocks. This read is done in 2
+ * parts if not multple of 512. First read is rounded to a multiple of 512 bytes, last read fetches the
+ * remainder. Read addr is always 0x10000000 with the memory layout setup.
+ * @param dev device to read data from
+ * @param addr address within ASIC memory space, unused but kept for API
+ * @param data pointer where to store the read data
+ * @param len size to read
+ */
+static SANE_Status
+gl846_bulk_read_data (Genesys_Device * dev, uint8_t addr,
+ uint8_t * data, size_t len)
+{
+ SANE_Status status;
+ size_t size, target, read, done;
+ uint8_t outdata[8];
+ uint8_t *buffer;
+
+ DBG (DBG_io, "gl846_bulk_read_data: requesting %lu bytes at addr=0x%02x\n", (u_long) len, addr);
+
+ if (len == 0)
+ return SANE_STATUS_GOOD;
+
+ target = len;
+ buffer = data;
+
+ /* loop until computed data size is read */
+ while (target)
+ {
+ if (target > 0xeff0)
+ {
+ size = 0xeff0;
+ }
+ else
+ {
+ size = target;
+ }
+
+ /* hard coded 0x10000000 addr */
+ outdata[0] = 0;
+ outdata[1] = 0;
+ outdata[2] = 0;
+ outdata[3] = 0x10;
+
+ /* data size to transfer */
+ outdata[4] = (size & 0xff);
+ outdata[5] = ((size >> 8) & 0xff);
+ outdata[6] = ((size >> 16) & 0xff);
+ outdata[7] = ((size >> 24) & 0xff);
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_BUFFER,
+ VALUE_BUFFER, 0x00, sizeof (outdata),
+ outdata);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s failed while writing command: %s\n",
+ __FUNCTION__, sane_strstatus (status));
+ return status;
+ }
+
+ /* blocks must be multiple of 512 but not last block */
+ read = size;
+ if (read >= 512)
+ {
+ read /= 512;
+ read *= 512;
+ }
+
+ DBG (DBG_io2,
+ "gl846_bulk_read_data: trying to read %lu bytes of data\n",
+ (u_long) read);
+ status = sanei_usb_read_bulk (dev->dn, buffer, &read);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_bulk_read_data failed while reading bulk data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ done=read;
+ DBG (DBG_io2, "gl846_bulk_read_data: %lu bytes of data read\n", (u_long) done);
+
+ /* read less than 512 bytes remainder */
+ if (read < size)
+ {
+ read = size - read;
+ DBG (DBG_io2,
+ "gl846_bulk_read_data: trying to read %lu bytes of data\n",
+ (u_long) read);
+ status = sanei_usb_read_bulk (dev->dn, buffer+done, &read);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_bulk_read_data failed while reading bulk data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ done=read;
+ DBG (DBG_io2, "gl846_bulk_read_data: %lu bytes of data read\n", (u_long) done);
+ }
+
+ DBG (DBG_io2, "%s: read %lu bytes, %lu remaining\n", __FUNCTION__,
+ (u_long) size, (u_long) (target - size));
+
+ target -= size;
+ buffer += size;
+ }
+
+ if (DBG_LEVEL >= DBG_data && dev->binary!=NULL)
+ {
+ fwrite(data, len, 1, dev->binary);
+ }
+
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+/****************************************************************************
+ Mid level functions
+ ****************************************************************************/
+
+static SANE_Bool
+gl846_get_fast_feed_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG02);
+ if (r && (r->value & REG02_FASTFED))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl846_get_filter_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_FILTER))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl846_get_lineart_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_LINEART))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl846_get_bitset_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_BITSET))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl846_get_gain4_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, 0x06);
+ if (r && (r->value & REG06_GAIN4))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl846_test_buffer_empty_bit (SANE_Byte val)
+{
+ if (val & REG41_BUFEMPTY)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl846_test_motor_flag_bit (SANE_Byte val)
+{
+ if (val & REG41_MOTORENB)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+/**
+ * compute the step multiplier used
+ */
+static int
+gl846_get_step_multiplier (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+ int value = 1;
+
+ r = sanei_genesys_get_address (regs, 0x9d);
+ if (r != NULL)
+ {
+ value = (r->value & 0x0f)>>1;
+ value = 1 << value;
+ }
+ DBG (DBG_io, "%s: step multiplier is %d\n", __FUNCTION__, value);
+ return value;
+}
+
+/** @brief sensor profile
+ * search for the database of motor profiles and get the best one. Each
+ * profile is at a specific dpihw. Use LiDE 110 table by default.
+ * @param sensor_type sensor id
+ * @param dpi hardware dpi for the scan
+ * @return a pointer to a Sensor_Profile struct
+ */
+static Sensor_Profile *get_sensor_profile(int sensor_type, int dpi)
+{
+ unsigned int i;
+ int idx;
+
+ i=0;
+ idx=-1;
+ while(i<sizeof(sensors)/sizeof(Sensor_Profile))
+ {
+ /* exact match */
+ if(sensors[i].sensor_type==sensor_type && sensors[i].dpi==dpi)
+ {
+ return &(sensors[i]);
+ }
+
+ /* closest match */
+ if(sensors[i].sensor_type==sensor_type)
+ {
+ if(idx<0)
+ {
+ idx=i;
+ }
+ else
+ {
+ if(sensors[i].dpi>=dpi
+ && sensors[i].dpi<sensors[idx].dpi)
+ {
+ idx=i;
+ }
+ }
+ }
+ i++;
+ }
+
+ /* default fallback */
+ if(idx<0)
+ {
+ DBG (DBG_warn,"%s: using default sensor profile\n",__FUNCTION__);
+ idx=0;
+ }
+
+ return &(sensors[idx]);
+}
+
+/**@brief compute exposure to use
+ * compute the sensor exposure based on target resolution
+ */
+static int gl846_compute_exposure(Genesys_Device *dev, int xres)
+{
+ Sensor_Profile *sensor;
+
+ sensor=get_sensor_profile(dev->model->ccd_type, xres);
+ return sensor->exposure;
+}
+
+
+/** @brief sensor specific settings
+*/
+static void
+gl846_setup_sensor (Genesys_Device * dev, Genesys_Register_Set * regs, int dpi)
+{
+ Genesys_Register_Set *r;
+ Sensor_Profile *sensor;
+ int dpihw, i;
+ uint16_t exp;
+
+ DBGSTART;
+ dpihw=sanei_genesys_compute_dpihw(dev,dpi);
+
+ for (i = 0x06; i < 0x0e; i++)
+ {
+ r = sanei_genesys_get_address (regs, 0x10 + i);
+ if (r)
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+ }
+
+ for (i = 0; i < 9; i++)
+ {
+ r = sanei_genesys_get_address (regs, 0x52 + i);
+ if (r)
+ r->value = dev->sensor.regs_0x52_0x5e[i];
+ }
+
+ /* set EXPDUMMY and CKxMAP */
+ dpihw=sanei_genesys_compute_dpihw(dev,dpi);
+ sensor=get_sensor_profile(dev->model->ccd_type, dpihw);
+
+ sanei_genesys_set_reg_from_set(regs,REG_EXPDMY,(uint8_t)((sensor->expdummy) & 0xff));
+
+ /* if no calibration has been done, set default values for exposures */
+ exp=dev->sensor.regs_0x10_0x1d[0]*256+dev->sensor.regs_0x10_0x1d[1];
+ if(exp==0)
+ {
+ exp=sensor->expr;
+ }
+ sanei_genesys_set_double(regs,REG_EXPR,exp);
+
+ exp=dev->sensor.regs_0x10_0x1d[2]*256+dev->sensor.regs_0x10_0x1d[3];
+ if(exp==0)
+ {
+ exp=sensor->expg;
+ }
+ sanei_genesys_set_double(regs,REG_EXPG,exp);
+
+ exp=dev->sensor.regs_0x10_0x1d[4]*256+dev->sensor.regs_0x10_0x1d[5];
+ if(exp==0)
+ {
+ exp=sensor->expb;
+ }
+ sanei_genesys_set_double(regs,REG_EXPB,exp);
+
+ sanei_genesys_set_triple(regs,REG_CK1MAP,sensor->ck1map);
+ sanei_genesys_set_triple(regs,REG_CK3MAP,sensor->ck3map);
+ sanei_genesys_set_triple(regs,REG_CK4MAP,sensor->ck4map);
+
+ /* order of the sub-segments */
+ dev->order=sensor->order;
+
+ r = sanei_genesys_get_address (regs, 0x17);
+ r->value = sensor->r17;
+
+ DBGCOMPLETED;
+}
+
+
+/* returns the max register bulk size */
+static int
+gl846_bulk_full_size (void)
+{
+ return GENESYS_GL846_MAX_REGS;
+}
+
+/** @brief set all registers to default values .
+ * This function is called only once at the beginning and
+ * fills register startup values for registers reused across scans.
+ * Those that are rarely modified or not modified are written
+ * individually.
+ * @param dev device structure holding register set to initialize
+ */
+static void
+gl846_init_registers (Genesys_Device * dev)
+{
+ DBGSTART;
+
+ memset (dev->reg, 0,
+ GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ SETREG (0x01,0x60);
+ SETREG (0x02,0x38);
+ SETREG (0x03,0x03);
+ SETREG (0x04,0x22);
+ SETREG (0x05,0x60);
+ SETREG (0x06,0x10);
+ SETREG (0x08,0x60);
+ SETREG (0x09,0x00);
+ SETREG (0x0a,0x00);
+ SETREG (0x0b,0x8b);
+ SETREG (0x0c,0x00);
+ SETREG (0x0d,0x00);
+ SETREG (0x10,0x00);
+ SETREG (0x11,0x00);
+ SETREG (0x12,0x00);
+ SETREG (0x13,0x00);
+ SETREG (0x14,0x00);
+ SETREG (0x15,0x00);
+ SETREG (0x16,0xbb);
+ SETREG (0x17,0x13);
+ SETREG (0x18,0x10);
+ SETREG (0x19,0x2a);
+ SETREG (0x1a,0x34);
+ SETREG (0x1b,0x00);
+ SETREG (0x1c,0x20);
+ SETREG (0x1d,0x06);
+ SETREG (0x1e,0xf0);
+ SETREG (0x1f,0x01);
+ SETREG (0x20,0x03);
+ SETREG (0x21,0x10);
+ SETREG (0x22,0x60);
+ SETREG (0x23,0x60);
+ SETREG (0x24,0x60);
+ SETREG (0x25,0x00);
+ SETREG (0x26,0x00);
+ SETREG (0x27,0x00);
+ SETREG (0x2c,0x00);
+ SETREG (0x2d,0x00);
+ SETREG (0x2e,0x80);
+ SETREG (0x2f,0x80);
+ SETREG (0x30,0x00);
+ SETREG (0x31,0x00);
+ SETREG (0x32,0x00);
+ SETREG (0x33,0x00);
+ SETREG (0x34,0x1f);
+ SETREG (0x35,0x00);
+ SETREG (0x36,0x40);
+ SETREG (0x37,0x00);
+ SETREG (0x38,0x2a);
+ SETREG (0x39,0xf8);
+ SETREG (0x3d,0x00);
+ SETREG (0x3e,0x00);
+ SETREG (0x3f,0x01);
+ SETREG (0x52,0x02);
+ SETREG (0x53,0x04);
+ SETREG (0x54,0x06);
+ SETREG (0x55,0x08);
+ SETREG (0x56,0x0a);
+ SETREG (0x57,0x00);
+ SETREG (0x58,0x59);
+ SETREG (0x59,0x31);
+ SETREG (0x5a,0x40);
+ SETREG (0x5e,0x1f);
+ SETREG (0x5f,0x01);
+ SETREG (0x60,0x00);
+ SETREG (0x61,0x00);
+ SETREG (0x62,0x00);
+ SETREG (0x63,0x00);
+ SETREG (0x64,0x00);
+ SETREG (0x65,0x00);
+ SETREG (0x67,0x7f);
+ SETREG (0x68,0x7f);
+ SETREG (0x69,0x01);
+ SETREG (0x6a,0x01);
+ SETREG (0x70,0x01);
+ SETREG (0x71,0x00);
+ SETREG (0x72,0x02);
+ SETREG (0x73,0x01);
+ SETREG (0x74,0x00);
+ SETREG (0x75,0x00);
+ SETREG (0x76,0x00);
+ SETREG (0x77,0x00);
+ SETREG (0x78,0x00);
+ SETREG (0x79,0x3f);
+ SETREG (0x7a,0x00);
+ SETREG (0x7b,0x09);
+ SETREG (0x7c,0x99);
+ SETREG (0x7d,0x20);
+ SETREG (0x7f,0x05);
+ SETREG (0x80,0x4f);
+ SETREG (0x87,0x02);
+ SETREG (0x94,0xff);
+ SETREG (0x9d,0x04);
+ SETREG (0x9e,0x00);
+ SETREG (0xa1,0xe0);
+ SETREG (0xa2,0x1f);
+ SETREG (0xab,0xc0);
+ SETREG (0xbb,0x00);
+ SETREG (0xbc,0x0f);
+ SETREG (0xdb,0xff);
+ SETREG (0xfe,0x08);
+ SETREG (0xff,0x02);
+ SETREG (0x98,0x20);
+ SETREG (0x99,0x00);
+ SETREG (0x9a,0x90);
+ SETREG (0x9b,0x00);
+ SETREG (0xf8,0x05);
+
+ /* fine tune upon device description */
+ dev->reg[reg_0x05].value &= ~REG05_DPIHW;
+ switch (dev->sensor.optical_res)
+ {
+ case 600:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_600;
+ break;
+ case 1200:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_1200;
+ break;
+ case 2400:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_2400;
+ break;
+ case 4800:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_4800;
+ break;
+ }
+
+ /* initalize calibration reg */
+ memcpy (dev->calib_reg, dev->reg,
+ GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ DBGCOMPLETED;
+}
+
+/**@brief send slope table for motor movement
+ * Send slope_table in machine byte order
+ * @param dev device to send slope table
+ * @param table_nr index of the slope table in ASIC memory
+ * Must be in the [0-4] range.
+ * @param slope_table pointer to 16 bit values array of the slope table
+ * @param steps number of elements in the slope table
+ */
+static SANE_Status
+gl846_send_slope_table (Genesys_Device * dev, int table_nr,
+ uint16_t * slope_table, int steps)
+{
+ SANE_Status status;
+ uint8_t *table;
+ int i;
+ char msg[10000];
+
+ DBG (DBG_proc, "%s (table_nr = %d, steps = %d)\n", __FUNCTION__,
+ table_nr, steps);
+
+ /* sanity check */
+ if(table_nr<0 || table_nr>4)
+ {
+ DBG (DBG_error, "%s: invalid table number %d!\n", __FUNCTION__, table_nr);
+ return SANE_STATUS_INVAL;
+ }
+
+ table = (uint8_t *) malloc (steps * 2);
+ for (i = 0; i < steps; i++)
+ {
+ table[i * 2] = slope_table[i] & 0xff;
+ table[i * 2 + 1] = slope_table[i] >> 8;
+ }
+
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sprintf (msg, "write slope %d (%d)=", table_nr, steps);
+ for (i = 0; i < steps; i++)
+ {
+ sprintf (msg+strlen(msg), "%d", slope_table[i]);
+ }
+ DBG (DBG_io, "%s: %s\n", __FUNCTION__, msg);
+ }
+
+ /* slope table addresses are fixed */
+ status = sanei_genesys_write_ahb (dev->dn, dev->usb_mode, 0x10000000 + 0x4000 * table_nr, steps * 2, table);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: write to AHB failed writing slope table %d (%s)\n",
+ __FUNCTION__, table_nr, sane_strstatus (status));
+ }
+
+ free (table);
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * Set register values of Analog Device type frontend
+ * */
+static SANE_Status
+gl846_set_adi_fe (Genesys_Device * dev, uint8_t set)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int i;
+ uint16_t val;
+ uint8_t val8;
+
+ DBGSTART;
+
+ /* wait for FE to be ready */
+ status = sanei_genesys_get_status (dev, &val8);
+ while (val8 & REG41_FEBUSY);
+ {
+ usleep (10000);
+ status = sanei_genesys_get_status (dev, &val8);
+ };
+
+ if (set == AFE_INIT)
+ {
+ DBG (DBG_proc, "%s(): setting DAC %u\n", __FUNCTION__, dev->model->dac_type);
+
+ /* sets to default values */
+ sanei_genesys_init_fe (dev);
+ }
+
+ /* write them to analog frontend */
+ val = dev->frontend.reg[0];
+ status = sanei_genesys_fe_write_data (dev, 0x00, val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to write reg0: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+ val = dev->frontend.reg[1];
+ status = sanei_genesys_fe_write_data (dev, 0x01, val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to write reg1: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ val = dev->frontend.gain[i];
+ status = sanei_genesys_fe_write_data (dev, 0x02 + i, val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to write gain %d: %s\n", __FUNCTION__, i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ for (i = 0; i < 3; i++)
+ {
+ val = dev->frontend.offset[i];
+ status = sanei_genesys_fe_write_data (dev, 0x05 + i, val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to write offset %d: %s\n", __FUNCTION__, i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+static SANE_Status
+gl846_homsnr_gpio(Genesys_Device *dev)
+{
+uint8_t val;
+SANE_Status status=SANE_STATUS_GOOD;
+
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ val |= 0x41;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+
+ return status;
+}
+
+/* Set values of analog frontend */
+static SANE_Status
+gl846_set_fe (Genesys_Device * dev, uint8_t set)
+{
+ SANE_Status status;
+
+ DBG(DBG_proc, "gl846_set_fe (%s)\n",
+ set == AFE_INIT ? "init" : set == AFE_SET ? "set" :
+ set == AFE_POWER_SAVE ? "powersave" : "huh?");
+
+ /* route to specific analog frontend setup */
+ switch (dev->reg[reg_0x04].value & REG04_FESET)
+ {
+ case 0x02: /* ADI FE */
+ status = gl846_set_adi_fe(dev, set);
+ break;
+ default:
+ DBG(DBG_proc, "gl846_set_fe(): unsupported frontend type %d\n",
+ dev->reg[reg_0x04].value & REG04_FESET);
+ status = SANE_STATUS_UNSUPPORTED;
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** @brief set up motor related register for scan
+ */
+static SANE_Status
+gl846_init_motor_regs_scan (Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ unsigned int scan_exposure_time,
+ float scan_yres,
+ int scan_step_type,
+ unsigned int scan_lines,
+ unsigned int scan_dummy,
+ unsigned int feed_steps,
+ int scan_power_mode,
+ unsigned int flags)
+{
+ SANE_Status status;
+ int use_fast_fed;
+ unsigned int fast_dpi;
+ uint16_t scan_table[SLOPE_TABLE_SIZE];
+ uint16_t fast_table[SLOPE_TABLE_SIZE];
+ int scan_steps, fast_steps, factor;
+ unsigned int feedl, dist;
+ Genesys_Register_Set *r;
+ uint32_t z1, z2;
+ unsigned int min_restep = 0x20;
+ uint8_t val;
+ int fast_step_type;
+ unsigned int ccdlmt,tgtime;
+
+ DBGSTART;
+ DBG (DBG_proc, "gl846_init_motor_regs_scan : scan_exposure_time=%d, "
+ "scan_yres=%g, scan_step_type=%d, scan_lines=%d, scan_dummy=%d, "
+ "feed_steps=%d, scan_power_mode=%d, flags=%x\n",
+ scan_exposure_time,
+ scan_yres,
+ scan_step_type,
+ scan_lines, scan_dummy, feed_steps, scan_power_mode, flags);
+
+ /* get step multiplier */
+ factor = gl846_get_step_multiplier (reg);
+
+ use_fast_fed=0;
+ /* no fast fed since feed works well */
+ if(dev->settings.yres==4444 && feed_steps>100
+ && ((flags & MOTOR_FLAG_FEED)==0))
+ {
+ use_fast_fed=1;
+ }
+ DBG (DBG_io, "%s: use_fast_fed=%d\n", __FUNCTION__, use_fast_fed);
+
+ sanei_genesys_set_triple(reg, REG_LINCNT, scan_lines);
+ DBG (DBG_io, "%s: lincnt=%d\n", __FUNCTION__, scan_lines);
+
+ /* compute register 02 value */
+ r = sanei_genesys_get_address (reg, REG02);
+ r->value = 0x00;
+ r->value |= REG02_MTRPWR;
+
+ if (use_fast_fed)
+ r->value |= REG02_FASTFED;
+ else
+ r->value &= ~REG02_FASTFED;
+
+ if (flags & MOTOR_FLAG_AUTO_GO_HOME)
+ r->value |= REG02_AGOHOME | REG02_NOTHOME;
+
+ if ((flags & MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ ||(scan_yres>=dev->sensor.optical_res))
+ {
+ r->value |= REG02_ACDCDIS;
+ }
+
+ /* scan and backtracking slope table */
+ sanei_genesys_slope_table(scan_table,
+ &scan_steps,
+ scan_yres,
+ scan_exposure_time,
+ dev->motor.base_ydpi,
+ scan_step_type,
+ factor,
+ dev->model->motor_type,
+ gl846_motors);
+ RIE(gl846_send_slope_table (dev, SCAN_TABLE, scan_table, scan_steps*factor));
+ RIE(gl846_send_slope_table (dev, BACKTRACK_TABLE, scan_table, scan_steps*factor));
+
+ /* fast table */
+ fast_dpi=sanei_genesys_get_lowest_ydpi(dev);
+ fast_step_type=scan_step_type;
+ if(scan_step_type>=2)
+ {
+ fast_step_type=2;
+ }
+
+ sanei_genesys_slope_table(fast_table,
+ &fast_steps,
+ fast_dpi,
+ scan_exposure_time,
+ dev->motor.base_ydpi,
+ fast_step_type,
+ factor,
+ dev->model->motor_type,
+ gl846_motors);
+
+ /* manual override of high start value */
+ fast_table[0]=fast_table[1];
+
+ RIE(gl846_send_slope_table (dev, STOP_TABLE, fast_table, fast_steps*factor));
+ RIE(gl846_send_slope_table (dev, FAST_TABLE, fast_table, fast_steps*factor));
+ RIE(gl846_send_slope_table (dev, HOME_TABLE, fast_table, fast_steps*factor));
+
+ /* correct move distance by acceleration and deceleration amounts */
+ feedl=feed_steps;
+ if (use_fast_fed)
+ {
+ feedl<<=fast_step_type;
+ dist=(scan_steps+2*fast_steps)*factor;
+ /* TODO read and decode REGAB */
+ r = sanei_genesys_get_address (reg, 0x5e);
+ dist += (r->value & 31);
+ /* FEDCNT */
+ r = sanei_genesys_get_address (reg, REG_FEDCNT);
+ dist += r->value;
+ }
+ else
+ {
+ feedl<<=scan_step_type;
+ dist=scan_steps*factor;
+ if (flags & MOTOR_FLAG_FEED)
+ dist *=2;
+ }
+ DBG (DBG_io2, "%s: scan steps=%d\n", __FUNCTION__, scan_steps);
+ DBG (DBG_io2, "%s: acceleration distance=%d\n", __FUNCTION__, dist);
+
+ /* check for overflow */
+ if(dist<feedl)
+ feedl -= dist;
+ else
+ feedl = 0;
+
+ sanei_genesys_set_triple(reg,REG_FEEDL,feedl);
+ DBG (DBG_io ,"%s: feedl=%d\n",__FUNCTION__,feedl);
+
+ r = sanei_genesys_get_address (reg, REG0C);
+ ccdlmt=(r->value & REG0C_CCDLMT)+1;
+
+ r = sanei_genesys_get_address (reg, REG1C);
+ tgtime=1<<(r->value & REG1C_TGTIME);
+
+ /* hi res motor speed GPIO */
+ /*
+ RIE (sanei_genesys_read_register (dev, REG6C, &effective));
+ */
+
+ /* if quarter step, bipolar Vref2 */
+ /* XXX STEF XXX GPIO
+ if (scan_step_type > 1)
+ {
+ if (scan_step_type < 3)
+ {
+ val = effective & ~REG6C_GPIO13;
+ }
+ else
+ {
+ val = effective | REG6C_GPIO13;
+ }
+ }
+ else
+ {
+ val = effective;
+ }
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+ */
+
+ /* effective scan */
+ /*
+ RIE (sanei_genesys_read_register (dev, REG6C, &effective));
+ val = effective | REG6C_GPIO10;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+ */
+
+ if(dev->model->gpo_type==GPO_IMG101)
+ {
+ if(scan_yres==sanei_genesys_compute_dpihw(dev,scan_yres))
+ {
+ val=1;
+ }
+ else
+ {
+ val=0;
+ }
+ RIE (sanei_genesys_write_register (dev, REG7E, val));
+ }
+
+ min_restep=scan_steps/2-1;
+ if (min_restep < 1)
+ min_restep = 1;
+ r = sanei_genesys_get_address (reg, REG_FWDSTEP);
+ r->value = min_restep;
+ r = sanei_genesys_get_address (reg, REG_BWDSTEP);
+ r->value = min_restep;
+
+ sanei_genesys_calculate_zmode2(use_fast_fed,
+ scan_exposure_time*ccdlmt*tgtime,
+ scan_table,
+ scan_steps*factor,
+ feedl,
+ min_restep*factor,
+ &z1,
+ &z2);
+
+ DBG (DBG_info, "gl846_init_motor_regs_scan: z1 = %d\n", z1);
+ sanei_genesys_set_triple(reg, REG60, z1 | (scan_step_type << (16+REG60S_STEPSEL)));
+
+ DBG (DBG_info, "gl846_init_motor_regs_scan: z2 = %d\n", z2);
+ sanei_genesys_set_triple(reg, REG63, z2 | (scan_step_type << (16+REG63S_FSTPSEL)));
+
+ r = sanei_genesys_get_address (reg, 0x1e);
+ r->value &= 0xf0; /* 0 dummy lines */
+ r->value |= scan_dummy; /* dummy lines */
+
+ r = sanei_genesys_get_address (reg, REG67);
+ r->value = 0x7f;
+
+ r = sanei_genesys_get_address (reg, REG68);
+ r->value = 0x7f;
+
+ r = sanei_genesys_get_address (reg, REG_STEPNO);
+ r->value = scan_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FASTNO);
+ r->value = scan_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FSHDEC);
+ r->value = scan_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FMOVNO);
+ r->value = fast_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FMOVDEC);
+ r->value = fast_steps;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/** @brief set up registers related to sensor
+ * Set up the following registers
+ 0x01
+ 0x03
+ 0x10-0x015 R/G/B exposures
+ 0x19 EXPDMY
+ 0x2e BWHI
+ 0x2f BWLO
+ 0x04
+ 0x87
+ 0x05
+ 0x2c,0x2d DPISET
+ 0x30,0x31 STRPIXEL
+ 0x32,0x33 ENDPIXEL
+ 0x35,0x36,0x37 MAXWD [25:2] (>>2)
+ 0x38,0x39 LPERIOD
+ 0x34 DUMMY
+ */
+static SANE_Status
+gl846_init_optical_regs_scan (Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ unsigned int exposure_time,
+ int used_res,
+ unsigned int start,
+ unsigned int pixels,
+ int channels,
+ int depth,
+ SANE_Bool half_ccd, int color_filter, int flags)
+{
+ unsigned int words_per_line;
+ unsigned int startx, endx, used_pixels;
+ unsigned int dpiset, dpihw,segnb,cksel,factor;
+ unsigned int bytes;
+ Genesys_Register_Set *r;
+ SANE_Status status;
+ Sensor_Profile *sensor;
+
+ DBG (DBG_proc, "gl846_init_optical_regs_scan : exposure_time=%d, "
+ "used_res=%d, start=%d, pixels=%d, channels=%d, depth=%d, "
+ "half_ccd=%d, flags=%x\n", exposure_time,
+ used_res, start, pixels, channels, depth, half_ccd, flags);
+
+ /* resolution is divided according to CKSEL */
+ r = sanei_genesys_get_address (reg, REG18);
+ cksel= (r->value & REG18_CKSEL)+1;
+ DBG (DBG_io2, "%s: cksel=%d\n", __FUNCTION__, cksel);
+
+ /* to manage high resolution device while keeping good
+ * low resolution scanning speed, we make hardware dpi vary */
+ dpihw=sanei_genesys_compute_dpihw(dev, used_res * cksel);
+ factor=dev->sensor.optical_res/dpihw;
+ DBG (DBG_io2, "%s: dpihw=%d (factor=%d)\n", __FUNCTION__, dpihw, factor);
+
+ /* sensor parameters */
+ sensor=get_sensor_profile(dev->model->ccd_type, dpihw);
+ gl846_setup_sensor (dev, reg, dpihw);
+ dpiset = used_res * cksel;
+
+ /* start and end coordinate in optical dpi coordinates */
+ startx = start/cksel+dev->sensor.CCD_start_xoffset;
+ used_pixels=pixels/cksel;
+
+ /* end of sensor window */
+ endx = startx + used_pixels;
+
+ /* sensors are built from 600 dpi segments for LiDE 100/200
+ * and 1200 dpi for the 700F */
+ if (dev->model->flags & GENESYS_FLAG_SIS_SENSOR)
+ {
+ segnb=dpihw/600;
+ }
+ else
+ {
+ segnb=1;
+ }
+
+ /* compute pixel coordinate in the given dpihw space,
+ * taking segments into account */
+ startx/=factor*segnb;
+ endx/=factor*segnb;
+ dev->len=endx-startx;
+ dev->dist=0;
+ dev->skip=0;
+
+ /* in cas of multi-segments sensor, we have to add the witdh
+ * of the sensor crossed by the scan area */
+ if (dev->model->flags & GENESYS_FLAG_SIS_SENSOR && segnb>1)
+ {
+ dev->dist = sensor->segcnt;
+ }
+
+ /* use a segcnt rounded to next even number */
+ endx += ((dev->dist+1)&0xfffe)*(segnb-1);
+ used_pixels=endx-startx;
+
+ status = gl846_set_fe (dev, AFE_SET);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_init_optical_regs_scan: failed to set frontend: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* enable shading */
+ r = sanei_genesys_get_address (reg, REG01);
+ r->value &= ~REG01_SCAN;
+ r->value |= REG01_SHDAREA;
+ if ((flags & OPTICAL_FLAG_DISABLE_SHADING) ||
+ (dev->model->flags & GENESYS_FLAG_NO_CALIBRATION))
+ {
+ r->value &= ~REG01_DVDSET;
+ }
+ else
+ {
+ r->value |= REG01_DVDSET;
+ }
+
+ r = sanei_genesys_get_address (reg, REG03);
+ r->value &= ~REG03_AVEENB;
+
+ if (flags & OPTICAL_FLAG_DISABLE_LAMP)
+ r->value &= ~REG03_LAMPPWR;
+ else
+ r->value |= REG03_LAMPPWR;
+
+ /* BW threshold */
+ r = sanei_genesys_get_address (reg, 0x2e);
+ r->value = dev->settings.threshold;
+ r = sanei_genesys_get_address (reg, 0x2f);
+ r->value = dev->settings.threshold;
+
+ /* monochrome / color scan */
+ r = sanei_genesys_get_address (reg, REG04);
+ switch (depth)
+ {
+ case 1:
+ r->value &= ~REG04_BITSET;
+ r->value |= REG04_LINEART;
+ break;
+ case 8:
+ r->value &= ~(REG04_LINEART | REG04_BITSET);
+ break;
+ case 16:
+ r->value &= ~REG04_LINEART;
+ r->value |= REG04_BITSET;
+ break;
+ }
+
+ r->value &= ~(REG04_FILTER | REG04_AFEMOD);
+ if (channels == 1)
+ {
+ switch (color_filter)
+ {
+ case 0:
+ r->value |= 0x24; /* red filter */
+ break;
+ case 2:
+ r->value |= 0x2c; /* blue filter */
+ break;
+ default:
+ r->value |= 0x28; /* green filter */
+ break;
+ }
+ }
+ else
+ r->value |= 0x20; /* mono */
+
+ /* register 05 */
+ r = sanei_genesys_get_address (reg, REG05);
+
+ /* set up dpihw */
+ r->value &= ~REG05_DPIHW;
+ switch(dpihw)
+ {
+ case 600:
+ r->value |= REG05_DPIHW_600;
+ break;
+ case 1200:
+ r->value |= REG05_DPIHW_1200;
+ break;
+ case 2400:
+ r->value |= REG05_DPIHW_2400;
+ break;
+ case 4800:
+ r->value |= REG05_DPIHW_4800;
+ break;
+ }
+
+ /* enable gamma tables */
+ if (flags & OPTICAL_FLAG_DISABLE_GAMMA)
+ r->value &= ~REG05_GMMENB;
+ else
+ r->value |= REG05_GMMENB;
+
+ /* CIS scanners can do true gray by setting LEDADD */
+ /* we set up LEDADD only when asked */
+ if (dev->model->is_cis == SANE_TRUE)
+ {
+ r = sanei_genesys_get_address (reg, 0x87);
+ r->value &= ~REG87_LEDADD;
+ if (channels == 1 && (flags & OPTICAL_FLAG_ENABLE_LEDADD))
+ {
+ r->value |= REG87_LEDADD;
+ }
+ /* RGB weighting
+ r = sanei_genesys_get_address (reg, 0x01);
+ r->value &= ~REG01_TRUEGRAY;
+ if (channels == 1 && (flags & OPTICAL_FLAG_ENABLE_LEDADD))
+ {
+ r->value |= REG01_TRUEGRAY;
+ }*/
+ }
+
+ /* words(16bit) before gamma, conversion to 8 bit or lineart*/
+ words_per_line = (used_pixels * dpiset) / dpihw;
+ bytes=depth/8;
+ if (depth == 1)
+ {
+ words_per_line = (words_per_line+7)/8 ;
+ dev->len = (dev->len >> 3) + ((dev->len & 7) ? 1 : 0);
+ dev->dist = (dev->dist >> 3) + ((dev->dist & 7) ? 1 : 0);
+ }
+ else
+ {
+ words_per_line *= bytes;
+ dev->dist *= bytes;
+ dev->len *= bytes;
+ }
+
+ dev->bpl = words_per_line;
+ dev->cur=0;
+ dev->segnb=segnb;
+ dev->line_interp = 0;
+
+ sanei_genesys_set_double(reg,REG_DPISET,dpiset);
+ DBG (DBG_io2, "%s: dpiset used=%d\n", __FUNCTION__, dpiset);
+
+ sanei_genesys_set_double(reg,REG_STRPIXEL,startx);
+ sanei_genesys_set_double(reg,REG_ENDPIXEL,endx);
+ DBG (DBG_io2, "%s: startx=%d\n", __FUNCTION__, startx);
+ DBG (DBG_io2, "%s: endx =%d\n", __FUNCTION__, endx);
+
+ DBG (DBG_io2, "%s: used_pixels=%d\n", __FUNCTION__, used_pixels);
+ DBG (DBG_io2, "%s: pixels =%d\n", __FUNCTION__, pixels);
+ DBG (DBG_io2, "%s: depth =%d\n", __FUNCTION__, depth);
+ DBG (DBG_io2, "%s: dev->bpl =%lu\n", __FUNCTION__, (unsigned long)dev->bpl);
+ DBG (DBG_io2, "%s: dev->len =%lu\n", __FUNCTION__, (unsigned long)dev->len);
+ DBG (DBG_io2, "%s: dev->dist =%lu\n", __FUNCTION__, (unsigned long)dev->dist);
+ DBG (DBG_io2, "%s: dev->segnb =%lu\n", __FUNCTION__, (unsigned long)dev->segnb);
+
+ words_per_line *= channels;
+ dev->wpl = words_per_line;
+
+ if(dev->oe_buffer.buffer!=NULL)
+ {
+ sanei_genesys_buffer_free (&(dev->oe_buffer));
+ }
+ RIE (sanei_genesys_buffer_alloc (&(dev->oe_buffer), dev->wpl));
+
+ /* MAXWD is expressed in 4 words unit */
+ sanei_genesys_set_triple(reg, REG_MAXWD, (words_per_line >> 2));
+ DBG (DBG_io2, "%s: words_per_line used=%d\n", __FUNCTION__, words_per_line);
+
+ sanei_genesys_set_double(reg, REG_LPERIOD, exposure_time);
+ DBG (DBG_io2, "%s: exposure_time used=%d\n", __FUNCTION__, exposure_time);
+
+ r = sanei_genesys_get_address (reg, 0x34);
+ r->value = dev->sensor.dummy_pixel;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/* set up registers for an actual scan
+ *
+ * this function sets up the scanner to scan in normal or single line mode
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+gl846_init_scan_regs (Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ float xres, /*dpi */
+ float yres, /*dpi */
+ float startx, /*optical_res, from dummy_pixel+1 */
+ float starty, /*base_ydpi, from home! */
+ float pixels,
+ float lines,
+ unsigned int depth,
+ unsigned int channels,
+ int color_filter,
+ unsigned int flags)
+{
+ int used_res;
+ int start, used_pixels;
+ int bytes_per_line;
+ int move;
+ unsigned int lincnt;
+ unsigned int oflags; /**> optical flags */
+ unsigned int mflags; /**> motor flags */
+ int exposure_time;
+ int stagger;
+
+ int slope_dpi = 0;
+ int dummy = 0;
+ int scan_step_type = 1;
+ int scan_power_mode = 0;
+ int max_shift;
+ size_t requested_buffer_size, read_buffer_size;
+
+ SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */
+ int optical_res;
+ SANE_Status status;
+
+ DBG (DBG_info,
+ "gl846_init_scan_regs settings:\n"
+ "Resolution : %gDPI/%gDPI\n"
+ "Lines : %g\n"
+ "PPL : %g\n"
+ "Startpos : %g/%g\n"
+ "Depth/Channels: %u/%u\n"
+ "Flags : %x\n\n",
+ xres, yres, lines, pixels, startx, starty, depth, channels, flags);
+
+ /* we may have 2 domains for ccd: xres below or above half ccd max dpi */
+ if (dev->sensor.optical_res < 2 * xres ||
+ !(dev->model->flags & GENESYS_FLAG_HALF_CCD_MODE))
+ {
+ half_ccd = SANE_FALSE;
+ }
+ else
+ {
+ half_ccd = SANE_TRUE;
+ }
+
+ /* optical_res */
+ optical_res = dev->sensor.optical_res;
+ if (half_ccd)
+ optical_res /= 2;
+
+ /* stagger */
+ if ((!half_ccd) && (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE))
+ stagger = (4 * yres) / dev->motor.base_ydpi;
+ else
+ stagger = 0;
+ DBG (DBG_info, "gl846_init_scan_regs : stagger=%d lines\n", stagger);
+
+ /* used_res */
+ if (flags & SCAN_FLAG_USE_OPTICAL_RES)
+ {
+ used_res = optical_res;
+ }
+ else
+ {
+ /* resolution is choosen from a list */
+ used_res = xres;
+ }
+
+ /* compute scan parameters values */
+ /* pixels are allways given at full optical resolution */
+ /* use detected left margin and fixed value */
+ /* start */
+ /* add x coordinates */
+ start = startx;
+
+ if (stagger > 0)
+ start |= 1;
+
+ /* compute correct pixels number */
+ /* pixels */
+ used_pixels = (pixels * optical_res) / xres;
+
+ /* round up pixels number if needed */
+ if (used_pixels * xres < pixels * optical_res)
+ used_pixels++;
+
+ dummy = 3-channels;
+
+/* slope_dpi */
+/* cis color scan is effectively a gray scan with 3 gray lines per color
+ line and a FILTER of 0 */
+ if (dev->model->is_cis)
+ slope_dpi = yres * channels;
+ else
+ slope_dpi = yres;
+
+ slope_dpi = slope_dpi * (1 + dummy);
+
+ exposure_time = gl846_compute_exposure (dev, used_res);
+ scan_step_type = sanei_genesys_compute_step_type(gl846_motors, dev->model->motor_type, exposure_time);
+
+ DBG (DBG_info, "gl846_init_scan_regs : exposure_time=%d pixels\n", exposure_time);
+ DBG (DBG_info, "gl846_init_scan_regs : scan_step_type=%d\n", scan_step_type);
+
+/*** optical parameters ***/
+ /* in case of dynamic lineart, we use an internal 8 bit gray scan
+ * to generate 1 lineart data */
+ if ((flags & SCAN_FLAG_DYNAMIC_LINEART) && (dev->settings.scan_mode == SCAN_MODE_LINEART))
+ {
+ depth = 8;
+ }
+
+ /* we enable true gray for cis scanners only, and just when doing
+ * scan since color calibration is OK for this mode
+ */
+ oflags = 0;
+ if(flags & SCAN_FLAG_DISABLE_SHADING)
+ oflags |= OPTICAL_FLAG_DISABLE_SHADING;
+ if(flags & SCAN_FLAG_DISABLE_GAMMA)
+ oflags |= OPTICAL_FLAG_DISABLE_GAMMA;
+ if(flags & SCAN_FLAG_DISABLE_LAMP)
+ oflags |= OPTICAL_FLAG_DISABLE_LAMP;
+
+ if (dev->model->is_cis && dev->settings.true_gray)
+ {
+ oflags |= OPTICAL_FLAG_ENABLE_LEDADD;
+ }
+
+ status = gl846_init_optical_regs_scan (dev,
+ reg,
+ exposure_time,
+ used_res,
+ start,
+ used_pixels,
+ channels,
+ depth,
+ half_ccd,
+ color_filter,
+ oflags);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+/*** motor parameters ***/
+
+ /* max_shift */
+ max_shift=sanei_genesys_compute_max_shift(dev,channels,yres,flags);
+
+ /* lincnt */
+ lincnt = lines + max_shift + stagger;
+
+ /* add tl_y to base movement */
+ move = starty;
+ DBG (DBG_info, "gl846_init_scan_regs: move=%d steps\n", move);
+
+ mflags=0;
+ if(flags & SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ mflags |= MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE;
+ if(flags & SCAN_FLAG_FEEDING)
+ mflags |= MOTOR_FLAG_FEED;
+
+ status = gl846_init_motor_regs_scan (dev,
+ reg,
+ exposure_time,
+ slope_dpi,
+ scan_step_type,
+ dev->model->is_cis ? lincnt *
+ channels : lincnt, dummy, move,
+ scan_power_mode,
+ mflags);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+
+ /*** prepares data reordering ***/
+
+/* words_per_line */
+ bytes_per_line = (used_pixels * used_res) / optical_res;
+ bytes_per_line = (bytes_per_line * channels * depth) / 8;
+
+ requested_buffer_size = 8 * bytes_per_line;
+ /* we must use a round number of bytes_per_line */
+ /* XXX STEF XXX
+ if (requested_buffer_size > BULKIN_MAXSIZE)
+ requested_buffer_size =
+ (BULKIN_MAXSIZE / bytes_per_line) * bytes_per_line;
+ */
+
+ read_buffer_size =
+ 2 * requested_buffer_size +
+ ((max_shift + stagger) * used_pixels * channels * depth) / 8;
+
+ RIE (sanei_genesys_buffer_free (&(dev->read_buffer)));
+ RIE (sanei_genesys_buffer_alloc (&(dev->read_buffer), read_buffer_size));
+
+ RIE (sanei_genesys_buffer_free (&(dev->lines_buffer)));
+ RIE (sanei_genesys_buffer_alloc (&(dev->lines_buffer), read_buffer_size));
+
+ RIE (sanei_genesys_buffer_free (&(dev->shrink_buffer)));
+ RIE (sanei_genesys_buffer_alloc (&(dev->shrink_buffer),
+ requested_buffer_size));
+
+ RIE (sanei_genesys_buffer_free (&(dev->out_buffer)));
+ RIE (sanei_genesys_buffer_alloc (&(dev->out_buffer),
+ (8 * dev->settings.pixels * channels *
+ depth) / 8));
+
+
+ dev->read_bytes_left = bytes_per_line * lincnt;
+
+ DBG (DBG_info,
+ "gl846_init_scan_regs: physical bytes to read = %lu\n",
+ (u_long) dev->read_bytes_left);
+ dev->read_active = SANE_TRUE;
+
+
+ dev->current_setup.pixels = (used_pixels * used_res) / optical_res;
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = depth;
+ dev->current_setup.channels = channels;
+ dev->current_setup.exposure_time = exposure_time;
+ dev->current_setup.xres = used_res;
+ dev->current_setup.yres = yres;
+ dev->current_setup.half_ccd = half_ccd;
+ dev->current_setup.stagger = stagger;
+ dev->current_setup.max_shift = max_shift + stagger;
+
+/* TODO: should this be done elsewhere? */
+ /* scan bytes to send to the frontend */
+ /* theory :
+ target_size =
+ (dev->settings.pixels * dev->settings.lines * channels * depth) / 8;
+ but it suffers from integer overflow so we do the following:
+
+ 1 bit color images store color data byte-wise, eg byte 0 contains
+ 8 bits of red data, byte 1 contains 8 bits of green, byte 2 contains
+ 8 bits of blue.
+ This does not fix the overflow, though.
+ 644mp*16 = 10gp, leading to an overflow
+ -- pierre
+ */
+
+ dev->total_bytes_read = 0;
+ if (depth == 1)
+ dev->total_bytes_to_read =
+ ((dev->settings.pixels * dev->settings.lines) / 8 +
+ (((dev->settings.pixels * dev->settings.lines) % 8) ? 1 : 0)) *
+ channels;
+ else
+ dev->total_bytes_to_read =
+ dev->settings.pixels * dev->settings.lines * channels * (depth / 8);
+
+ DBG (DBG_info, "gl846_init_scan_regs: total bytes to send = %lu\n",
+ (u_long) dev->total_bytes_to_read);
+/* END TODO */
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl846_calculate_current_setup (Genesys_Device * dev)
+{
+ int channels;
+ int depth;
+ int start;
+
+ float xres; /*dpi */
+ float yres; /*dpi */
+ float startx; /*optical_res, from dummy_pixel+1 */
+ float pixels;
+ float lines;
+
+ int used_res;
+ int used_pixels;
+ unsigned int lincnt;
+ int exposure_time;
+ int stagger;
+
+ int slope_dpi;
+ int dummy = 0;
+ int max_shift;
+
+ SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */
+ int optical_res;
+
+ DBG (DBG_info,
+ "gl846_calculate_current_setup settings:\n"
+ "Resolution: %uDPI\n"
+ "Lines : %u\n"
+ "PPL : %u\n"
+ "Startpos : %.3f/%.3f\n"
+ "Scan mode : %d\n\n",
+ dev->settings.yres, dev->settings.lines, dev->settings.pixels,
+ dev->settings.tl_x, dev->settings.tl_y, dev->settings.scan_mode);
+
+ /* channels */
+ if (dev->settings.scan_mode == 4) /* single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+ /* depth */
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == 0)
+ depth = 1;
+
+ /* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+ start += dev->settings.tl_x;
+ start = (start * dev->sensor.optical_res) / MM_PER_INCH;
+
+
+ xres = dev->settings.xres; /*dpi */
+ yres = dev->settings.yres; /*dpi */
+ startx = start; /*optical_res, from dummy_pixel+1 */
+ pixels = dev->settings.pixels;
+ lines = dev->settings.lines;
+
+ DBG (DBG_info,
+ "gl846_calculate_current_setup settings:\n"
+ "Resolution : %gDPI/%gDPI\n"
+ "Lines : %g\n"
+ "PPL : %g\n"
+ "Startpos : %g\n"
+ "Depth/Channels: %u/%u\n\n",
+ xres, yres, lines, pixels, startx, depth, channels);
+
+/* half_ccd */
+ /* we have 2 domains for ccd: xres below or above half ccd max dpi */
+ if ((dev->sensor.optical_res < 2 * xres) ||
+ !(dev->model->flags & GENESYS_FLAG_HALF_CCD_MODE))
+ {
+ half_ccd = SANE_FALSE;
+ }
+ else
+ {
+ half_ccd = SANE_TRUE;
+ }
+
+ /* optical_res */
+ optical_res = dev->sensor.optical_res;
+
+ /* stagger */
+ if (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE)
+ stagger = (4 * yres) / dev->motor.base_ydpi;
+ else
+ stagger = 0;
+ DBG (DBG_info, "gl846_calculate_current_setup: stagger=%d lines\n",
+ stagger);
+
+ /* resolution is choosen from a fixed list */
+ used_res = xres;
+
+ /* compute scan parameters values */
+ /* pixels are allways given at half or full CCD optical resolution */
+ /* use detected left margin and fixed value */
+
+ /* compute correct pixels number */
+ used_pixels = (pixels * optical_res) / used_res;
+ dummy = 3-channels;
+
+ /* slope_dpi */
+ /* cis color scan is effectively a gray scan with 3 gray lines per color
+ line and a FILTER of 0 */
+ if (dev->model->is_cis)
+ slope_dpi = yres * channels;
+ else
+ slope_dpi = yres;
+
+ slope_dpi = slope_dpi * (1 + dummy);
+
+ exposure_time = gl846_compute_exposure (dev, used_res);
+ DBG (DBG_info, "%s : exposure_time=%d pixels\n", __FUNCTION__, exposure_time);
+
+ /* max_shift */
+ max_shift=sanei_genesys_compute_max_shift(dev,channels,yres,0);
+
+ /* lincnt */
+ lincnt = lines + max_shift + stagger;
+
+ dev->current_setup.pixels = (used_pixels * used_res) / optical_res;
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = depth;
+ dev->current_setup.channels = channels;
+ dev->current_setup.exposure_time = exposure_time;
+ dev->current_setup.xres = used_res;
+ dev->current_setup.yres = yres;
+ dev->current_setup.half_ccd = half_ccd;
+ dev->current_setup.stagger = stagger;
+ dev->current_setup.max_shift = max_shift + stagger;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static void
+gl846_set_motor_power (Genesys_Register_Set * regs, SANE_Bool set)
+{
+
+ DBG (DBG_proc, "gl846_set_motor_power\n");
+
+ if (set)
+ {
+ sanei_genesys_set_reg_from_set (regs, REG02,
+ sanei_genesys_read_reg_from_set (regs,
+ REG02)
+ | REG02_MTRPWR);
+ }
+ else
+ {
+ sanei_genesys_set_reg_from_set (regs, REG02,
+ sanei_genesys_read_reg_from_set (regs,
+ REG02)
+ & ~REG02_MTRPWR);
+ }
+}
+
+static void
+gl846_set_lamp_power (Genesys_Device __sane_unused__ * dev,
+ Genesys_Register_Set * regs, SANE_Bool set)
+{
+ if (set)
+ {
+ sanei_genesys_set_reg_from_set (regs, REG03,
+ sanei_genesys_read_reg_from_set (regs, REG03)
+ | REG03_LAMPPWR);
+ }
+ else
+ {
+ sanei_genesys_set_reg_from_set (regs, REG03,
+ sanei_genesys_read_reg_from_set (regs, REG03)
+ & ~REG03_LAMPPWR);
+ }
+}
+
+/*for fast power saving methods only, like disabling certain amplifiers*/
+static SANE_Status
+gl846_save_power (Genesys_Device * dev, SANE_Bool enable)
+{
+ DBG (DBG_proc, "gl846_save_power: enable = %d\n", enable);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl846_set_powersaving (Genesys_Device * dev, int delay /* in minutes */ )
+{
+ DBG (DBG_proc, "gl846_set_powersaving (delay = %d)\n", delay);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl846_start_action (Genesys_Device * dev)
+{
+ return sanei_genesys_write_register (dev, 0x0f, 0x01);
+}
+
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl846_stop_action (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint8_t val40, val;
+ unsigned int loop;
+
+ DBGSTART;
+
+ /* post scan gpio : without that HOMSNR is unreliable */
+ gl846_homsnr_gpio(dev);
+ status = sanei_genesys_get_status (dev, &val);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ status = sanei_genesys_read_register (dev, REG40, &val40);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read home sensor: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* only stop action if needed */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
+ {
+ DBG (DBG_info, "%s: already stopped\n", __FUNCTION__);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ /* ends scan */
+ val = sanei_genesys_read_reg_from_set (dev->reg, REG01);
+ val &= ~REG01_SCAN;
+ sanei_genesys_set_reg_from_set (dev->reg, REG01, val);
+ status = sanei_genesys_write_register (dev, REG01, val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to write register 01: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+ usleep (100 * 1000);
+
+ loop = 10;
+ while (loop > 0)
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+ status = sanei_genesys_read_register (dev, REG40, &val40);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read home sensor: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* if scanner is in command mode, we are done */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG)
+ && !(val & REG41_MOTORENB))
+ {
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ usleep (100 * 1000);
+ loop--;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_IO_ERROR;
+}
+
+/* Send the low-level scan command */
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+gl846_begin_scan (Genesys_Device * dev, Genesys_Register_Set * reg,
+ SANE_Bool start_motor)
+{
+ SANE_Status status;
+ uint8_t val;
+ Genesys_Register_Set *r;
+
+ DBGSTART;
+
+ /* XXX STEF XXX SCAN GPIO */
+ /*
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+ */
+
+ val = REG0D_CLRLNCNT;
+ RIE (sanei_genesys_write_register (dev, REG0D, val));
+ val = REG0D_CLRMCNT;
+ RIE (sanei_genesys_write_register (dev, REG0D, val));
+
+ RIE (sanei_genesys_read_register (dev, REG01, &val));
+ val |= REG01_SCAN;
+ RIE (sanei_genesys_write_register (dev, REG01, val));
+ r = sanei_genesys_get_address (reg, REG01);
+ r->value = val;
+
+ if (start_motor)
+ {
+ RIE (sanei_genesys_write_register (dev, REG0F, 1));
+ }
+ else
+ {
+ RIE (sanei_genesys_write_register (dev, REG0F, 0));
+ }
+
+ DBGCOMPLETED;
+
+ return status;
+}
+
+
+/* Send the stop scan command */
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+gl846_end_scan (Genesys_Device * dev, Genesys_Register_Set * reg,
+ SANE_Bool check_stop)
+{
+ SANE_Status status;
+
+ DBG (DBG_proc, "gl846_end_scan (check_stop = %d)\n", check_stop);
+ if (reg == NULL)
+ return SANE_STATUS_INVAL;
+
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ status = SANE_STATUS_GOOD;
+ }
+ else /* flat bed scanners */
+ {
+ status = gl846_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_end_scan: failed to stop: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/* Moves the slider to the home (top) postion slowly */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl846_slow_back_home (Genesys_Device * dev, SANE_Bool wait_until_home)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL846_MAX_REGS];
+ SANE_Status status;
+ Genesys_Register_Set *r;
+ float resolution;
+ uint8_t val;
+ int loop = 0;
+ int scan_mode;
+
+ DBG (DBG_proc, "gl846_slow_back_home (wait_until_home = %d)\n",
+ wait_until_home);
+
+ if(dev->usb_mode<0)
+ {
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ /* post scan gpio : without that HOMSNR is unreliable */
+ gl846_homsnr_gpio(dev);
+
+ /* first read gives HOME_SENSOR true */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_slow_back_home: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+ usleep (100000); /* sleep 100 ms */
+
+ /* second is reliable */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_slow_back_home: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ /* is sensor at home? */
+ if (val & HOMESNR)
+ {
+ DBG (DBG_info, "%s: already at home, completed\n", __FUNCTION__);
+ dev->scanhead_position_in_steps = 0;
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ memcpy (local_reg, dev->reg, GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+
+ /* TODO add scan_mode to the API */
+ scan_mode= dev->settings.scan_mode;
+ dev->settings.scan_mode=SCAN_MODE_LINEART;
+ gl846_init_scan_regs (dev,
+ local_reg,
+ resolution,
+ resolution,
+ 100,
+ 30000,
+ 100,
+ 100,
+ 8,
+ 1,
+ 0,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+ dev->settings.scan_mode=scan_mode;
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* set up for reverse */
+ r = sanei_genesys_get_address (local_reg, REG02);
+ r->value |= REG02_MTRREV;
+
+ RIE (dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL846_MAX_REGS));
+
+ status = gl846_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_slow_back_home: failed to start motor: %s\n",
+ sane_strstatus (status));
+ gl846_stop_action (dev);
+ /* send original registers */
+ dev->model->cmd_set->bulk_write_register (dev, dev->reg, GENESYS_GL846_MAX_REGS);
+ return status;
+ }
+
+ /* post scan gpio : without that HOMSNR is unreliable */
+ gl846_homsnr_gpio(dev);
+
+ if (wait_until_home)
+ {
+ while (loop < 300) /* do not wait longer then 30 seconds */
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_slow_back_home: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (val & HOMESNR) /* home sensor */
+ {
+ DBG (DBG_info, "gl846_slow_back_home: reached home position\n");
+ gl846_stop_action (dev);
+ dev->scanhead_position_in_steps = 0;
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+ usleep (100000); /* sleep 100 ms */
+ ++loop;
+ }
+
+ /* when we come here then the scanner needed too much time for this, so we better stop the motor */
+ gl846_stop_action (dev);
+ DBG (DBG_error,
+ "gl846_slow_back_home: timeout while waiting for scanhead to go home\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ DBG (DBG_info, "gl846_slow_back_home: scanhead is still moving\n");
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/* Automatically set top-left edge of the scan area by scanning a 200x200 pixels
+ area at 600 dpi from very top of scanner */
+static SANE_Status
+gl846_search_start_position (Genesys_Device * dev)
+{
+ int size;
+ SANE_Status status;
+ uint8_t *data;
+ Genesys_Register_Set local_reg[GENESYS_GL846_MAX_REGS];
+ int steps;
+
+ int pixels = 600;
+ int dpi = 300;
+
+ DBG (DBG_proc, "gl846_search_start_position\n");
+
+ memcpy (local_reg, dev->reg,
+ GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ /* sets for a 200 lines * 600 pixels */
+ /* normal scan with no shading */
+
+ status = gl846_init_scan_regs (dev, local_reg, dpi, dpi, 0, 0, /*we should give a small offset here~60 steps */
+ 600, dev->model->search_lines, 8, 1, 1, /*green */
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to set up registers: %s\n",
+ sane_strstatus (status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* send to scanner */
+ status = dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL846_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ size = pixels * dev->model->search_lines;
+
+ data = malloc (size);
+ if (!data)
+ {
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ status = gl846_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner (dev, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("search_position.pnm", data, 8, 1, pixels,
+ dev->model->search_lines);
+
+ status = gl846_end_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to end scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* update regs to copy ASIC internal state */
+ memcpy (dev->reg, local_reg,
+ GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+/*TODO: find out where sanei_genesys_search_reference_point
+ stores information, and use that correctly*/
+ status =
+ sanei_genesys_search_reference_point (dev, data, 0, dpi, pixels,
+ dev->model->search_lines);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to set search reference point: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ free (data);
+ return SANE_STATUS_GOOD;
+}
+
+/*
+ * sets up register for coarse gain calibration
+ * todo: check it for scanners using it */
+static SANE_Status
+gl846_init_regs_for_coarse_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint8_t channels;
+ uint8_t cksel;
+
+ DBG (DBG_proc, "gl846_init_regs_for_coarse_calibration\n");
+
+
+ cksel = (dev->calib_reg[reg_0x18].value & REG18_CKSEL) + 1; /* clock speed = 1..4 clocks */
+
+ /* set line size */
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+ status = gl846_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ 0,
+ 0,
+ dev->sensor.optical_res / cksel,
+ 20,
+ 16,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_init_register_for_coarse_calibration: Failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_info,
+ "gl846_init_register_for_coarse_calibration: optical sensor res: %d dpi, actual res: %d\n",
+ dev->sensor.optical_res / cksel, dev->settings.xres);
+
+ status = dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL846_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_init_register_for_coarse_calibration: Failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief moves the slider to steps at motor base dpi
+ * @param dev device to work on
+ * @param steps number of steps to move in base_dpi line count
+ * */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl846_feed (Genesys_Device * dev, unsigned int steps)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL846_MAX_REGS];
+ SANE_Status status;
+ Genesys_Register_Set *r;
+ float resolution;
+ uint8_t val;
+
+ DBGSTART;
+ DBG (DBG_io, "%s: steps=%d\n", __FUNCTION__, steps);
+
+ /* prepare local registers */
+ memcpy (local_reg, dev->reg, GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+ gl846_init_scan_regs (dev,
+ local_reg,
+ resolution,
+ resolution,
+ 0,
+ steps,
+ 100,
+ 3,
+ 8,
+ 3,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_FEEDING |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+
+ /* set exposure to zero */
+ sanei_genesys_set_triple(local_reg,REG_EXPR,0);
+ sanei_genesys_set_triple(local_reg,REG_EXPG,0);
+ sanei_genesys_set_triple(local_reg,REG_EXPB,0);
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT));
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRMCNT));
+
+ /* set up for no scan */
+ r = sanei_genesys_get_address (local_reg, REG01);
+ r->value &= ~REG01_SCAN;
+
+ /* send registers */
+ RIE (dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL846_MAX_REGS));
+
+ status = gl846_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to start motor: %s\n", __FUNCTION__, sane_strstatus (status));
+ gl846_stop_action (dev);
+
+ /* restore original registers */
+ dev->model->cmd_set->bulk_write_register (dev, dev->reg, GENESYS_GL846_MAX_REGS);
+ return status;
+ }
+
+ /* wait until feed count reaches the required value, but do not
+ * exceed 30s */
+ do
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ }
+ while (status == SANE_STATUS_GOOD && !(val & FEEDFSH));
+
+ /* then stop scanning */
+ RIE(gl846_stop_action (dev));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/* init registers for shading calibration */
+static SANE_Status
+gl846_init_regs_for_shading (Genesys_Device * dev)
+{
+ SANE_Status status;
+ float move;
+
+ DBGSTART;
+ dev->calib_channels = 3;
+
+ /* initial calibration reg values */
+ memcpy (dev->calib_reg, dev->reg, GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ dev->calib_resolution = sanei_genesys_compute_dpihw(dev,dev->settings.xres);
+ dev->calib_lines = dev->model->shading_lines;
+ if(dev->calib_resolution==4800)
+ dev->calib_lines *= 2;
+ dev->calib_pixels = (dev->sensor.sensor_pixels*dev->calib_resolution)/dev->sensor.optical_res;
+ DBG (DBG_io, "%s: calib_lines = %d\n", __FUNCTION__, (unsigned int)dev->calib_lines);
+ DBG (DBG_io, "%s: calib_pixels = %d\n", __FUNCTION__, (unsigned int)dev->calib_pixels);
+
+ /* this is aworkaround insufficent distance for slope
+ * motor acceleration TODO special motor slope for shading */
+ move=1;
+ if(dev->calib_resolution<1200)
+ {
+ move=40;
+ }
+
+ status = gl846_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->calib_resolution,
+ dev->calib_resolution,
+ 0,
+ move,
+ dev->calib_pixels,
+ dev->calib_lines,
+ 16,
+ dev->calib_channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to setup scan: %s\n", __FUNCTION__, sane_strstatus (status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL846_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to bulk write registers: %s\n", __FUNCTION__, sane_strstatus (status));
+ return status;
+ }
+
+ /* we use GENESYS_FLAG_SHADING_REPARK */
+ dev->scanhead_position_in_steps = 0;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief set up registers for the actual scan
+ */
+static SANE_Status
+gl846_init_regs_for_scan (Genesys_Device * dev)
+{
+ int channels;
+ int flags;
+ int depth;
+ float move;
+ int move_dpi;
+ float start;
+
+ SANE_Status status;
+
+ DBG (DBG_info,
+ "gl846_init_regs_for_scan settings:\nResolution: %uDPI\n"
+ "Lines : %u\nPPL : %u\nStartpos : %.3f/%.3f\nScan mode : %d\n\n",
+ dev->settings.yres, dev->settings.lines, dev->settings.pixels,
+ dev->settings.tl_x, dev->settings.tl_y, dev->settings.scan_mode);
+
+ /* channels */
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+ /* depth */
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == SCAN_MODE_LINEART)
+ depth = 1;
+
+
+ /* steps to move to reach scanning area:
+ - first we move to physical start of scanning
+ either by a fixed steps amount from the black strip
+ or by a fixed amount from parking position,
+ minus the steps done during shading calibration
+ - then we move by the needed offset whitin physical
+ scanning area
+
+ assumption: steps are expressed at maximum motor resolution
+
+ we need:
+ SANE_Fixed y_offset;
+ SANE_Fixed y_size;
+ SANE_Fixed y_offset_calib;
+ mm_to_steps()=motor dpi / 2.54 / 10=motor dpi / MM_PER_INCH */
+
+ /* if scanner uses GENESYS_FLAG_SEARCH_START y_offset is
+ relative from origin, else, it is from parking position */
+
+ move_dpi = dev->motor.base_ydpi;
+
+ move = SANE_UNFIX (dev->model->y_offset);
+ move += dev->settings.tl_y;
+ move = (move * move_dpi) / MM_PER_INCH;
+ move -= dev->scanhead_position_in_steps;
+ DBG (DBG_info, "%s: move=%f steps\n",__FUNCTION__, move);
+
+ /* fast move to scan area */
+ /* we don't move fast the whole distance since it would involve
+ * computing acceleration/deceleration distance for scan
+ * resolution. So leave a remainder for it so scan makes the final
+ * move tuning */
+ if(channels*dev->settings.yres>=600 && move>700)
+ {
+ status = gl846_feed (dev, move-500);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to move to scan area\n",__FUNCTION__);
+ return status;
+ }
+ move=500;
+ }
+
+ DBG (DBG_info, "gl846_init_regs_for_scan: move=%f steps\n", move);
+ DBG (DBG_info, "%s: move=%f steps\n", __FUNCTION__, move);
+
+ /* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+ start += dev->settings.tl_x;
+ start = (start * dev->sensor.optical_res) / MM_PER_INCH;
+
+ flags = 0;
+
+ /* emulated lineart from gray data is required for now */
+ if(dev->settings.scan_mode == SCAN_MODE_LINEART
+ && dev->settings.dynamic_lineart)
+ {
+ flags |= SCAN_FLAG_DYNAMIC_LINEART;
+ }
+
+ /* backtracking isn't handled well, so don't enable it */
+ flags |= SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE;
+
+ status = gl846_init_scan_regs (dev,
+ dev->reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ start,
+ move,
+ dev->settings.pixels,
+ dev->settings.lines,
+ depth,
+ channels,
+ dev->settings.color_filter,
+ flags);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/**
+ * Send shading calibration data. The buffer is considered to always hold values
+ * for all the channels.
+ */
+static SANE_Status
+gl846_send_shading_data (Genesys_Device * dev, uint8_t * data, int size)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint32_t addr, length, i, x, factor, pixels;
+ uint32_t dpiset, dpihw, strpixel, endpixel;
+ uint16_t tempo;
+ uint32_t lines, channels;
+ uint8_t val,*buffer,*ptr,*src;
+
+ DBGSTART;
+ DBG( DBG_io2, "%s: writing %d bytes of shading data\n",__FUNCTION__,size);
+
+ /* shading data is plit in 3 (up to 5 with IR) areas
+ write(0x10014000,0x00000dd8)
+ URB 23429 bulk_out len 3544 wrote 0x33 0x10 0x....
+ write(0x1003e000,0x00000dd8)
+ write(0x10068000,0x00000dd8)
+ */
+ length = (uint32_t) (size / 3);
+ sanei_genesys_get_double(dev->reg,REG_STRPIXEL,&tempo);
+ strpixel=tempo;
+ sanei_genesys_get_double(dev->reg,REG_ENDPIXEL,&tempo);
+ endpixel=tempo;
+
+ /* compute deletion factor */
+ sanei_genesys_get_double(dev->reg,REG_DPISET,&tempo);
+ dpiset=tempo;
+ DBG( DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d, DPISET=%d\n",__FUNCTION__,strpixel,endpixel,endpixel-strpixel,dpiset);
+ dpihw=sanei_genesys_compute_dpihw(dev,dpiset);
+ factor=dpihw/dpiset;
+ DBG( DBG_io2, "%s: factor=%d\n",__FUNCTION__,factor);
+
+ if(DBG_LEVEL>=DBG_data)
+ {
+ dev->binary=fopen("binary.pnm","wb");
+ sanei_genesys_get_triple(dev->reg, REG_LINCNT, &lines);
+ channels=dev->current_setup.channels;
+ if(dev->binary!=NULL)
+ {
+ fprintf(dev->binary,"P5\n%d %d\n%d\n",(endpixel-strpixel)/factor*channels,lines/channels,255);
+ }
+ }
+
+ pixels=endpixel-strpixel;
+
+ /* since we're using SHDAREA, substract startx coordinate from shading */
+ strpixel-=((dev->sensor.CCD_start_xoffset*600)/dev->sensor.optical_res);
+
+ /* turn pixel value into bytes 2x16 bits words */
+ strpixel*=2*2;
+ pixels*=2*2;
+
+ /* allocate temporary buffer */
+ buffer=(uint8_t *)malloc(pixels);
+ memset(buffer,0,pixels);
+ DBG( DBG_io2, "%s: using chunks of %d (0x%04x) bytes\n",__FUNCTION__,pixels,pixels);
+
+ /* base addr of data has been written in reg D0-D4 in 4K word, so AHB address
+ * is 8192*reg value */
+
+ /* write actual color channel data */
+ for(i=0;i<3;i++)
+ {
+ /* build up actual shading data by copying the part from the full width one
+ * to the one corresponding to SHDAREA */
+ ptr=buffer;
+
+ /* iterate on both sensor segment */
+ for(x=0;x<pixels;x+=4*factor)
+ {
+ /* coefficient source */
+ src=(data+strpixel+i*length)+x;
+
+ /* coefficient copy */
+ ptr[0]=src[0];
+ ptr[1]=src[1];
+ ptr[2]=src[2];
+ ptr[3]=src[3];
+
+ /* next shading coefficient */
+ ptr+=4;
+ }
+
+ RIE (sanei_genesys_read_register (dev, 0xd0+i, &val));
+ addr = val * 8192 + 0x10000000;
+ status = sanei_genesys_write_ahb (dev->dn, dev->usb_mode, addr, pixels, buffer);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl846_send_shading_data; write to AHB failed (%s)\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ free(buffer);
+ DBGCOMPLETED;
+
+ return status;
+}
+
+/** @brief calibrates led exposure
+ * Calibrate exposure by scanning a white area until the used exposure gives
+ * data white enough.
+ * @param dev device to calibrate
+ */
+static SANE_Status
+gl846_led_calibration (Genesys_Device * dev)
+{
+ int num_pixels;
+ int total_size;
+ int used_res;
+ uint8_t *line;
+ int i, j;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int val;
+ int channels, depth;
+ int avg[3], top[3], bottom[3];
+ int turn;
+ char fn[20];
+ uint16_t exp[3];
+ Sensor_Profile *sensor;
+ float move;
+ SANE_Bool acceptable;
+
+ DBGSTART;
+
+ move = SANE_UNFIX (dev->model->y_offset_calib);
+ move = (move * (dev->motor.base_ydpi/4)) / MM_PER_INCH;
+ if(move>20)
+ {
+ RIE(gl846_feed (dev, move));
+ }
+ DBG (DBG_io, "%s: move=%f steps\n", __FUNCTION__, move);
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ depth=16;
+ used_res=sanei_genesys_compute_dpihw(dev,dev->settings.xres);
+ sensor=get_sensor_profile(dev->model->ccd_type, used_res);
+ num_pixels = (dev->sensor.sensor_pixels*used_res)/dev->sensor.optical_res;
+
+ /* initial calibration reg values */
+ memcpy (dev->calib_reg, dev->reg, GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ /* set up for the calibration scan */
+ status = gl846_init_scan_regs (dev,
+ dev->calib_reg,
+ used_res,
+ used_res,
+ 0,
+ 0,
+ num_pixels,
+ 1,
+ depth,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to setup scan: %s\n", __FUNCTION__, sane_strstatus (status));
+ return status;
+ }
+
+ total_size = num_pixels * channels * (depth/8) * 1; /* colors * bytes_per_color * scan lines */
+ line = malloc (total_size);
+ if (!line)
+ return SANE_STATUS_NO_MEM;
+
+ /* initial loop values and boundaries */
+ exp[0]=sensor->expr;
+ exp[1]=sensor->expg;
+ exp[2]=sensor->expb;
+
+ bottom[0]=29000;
+ bottom[1]=29000;
+ bottom[2]=29000;
+
+ top[0]=41000;
+ top[1]=51000;
+ top[2]=51000;
+
+ turn = 0;
+
+ /* no move during led calibration */
+ gl846_set_motor_power (dev->calib_reg, SANE_FALSE);
+ do
+ {
+ /* set up exposure */
+ sanei_genesys_set_double(dev->calib_reg,REG_EXPR,exp[0]);
+ sanei_genesys_set_double(dev->calib_reg,REG_EXPG,exp[1]);
+ sanei_genesys_set_double(dev->calib_reg,REG_EXPB,exp[2]);
+
+ /* write registers and scan data */
+ RIEF (dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL846_MAX_REGS), line);
+
+ DBG (DBG_info, "gl846_led_calibration: starting line reading\n");
+ RIEF (gl846_begin_scan (dev, dev->calib_reg, SANE_TRUE), line);
+ RIEF (sanei_genesys_read_data_from_scanner (dev, line, total_size), line);
+
+ /* stop scanning */
+ RIEF (gl846_stop_action (dev), line);
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ snprintf (fn, 20, "led_%02d.pnm", turn);
+ sanei_genesys_write_pnm_file (fn, line, depth, channels, num_pixels, 1);
+ }
+
+ /* compute average */
+ for (j = 0; j < channels; j++)
+ {
+ avg[j] = 0;
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ line[i * 2 * channels + 2 * j + 1] * 256 +
+ line[i * 2 * channels + 2 * j];
+ avg[j] += val;
+ }
+
+ avg[j] /= num_pixels;
+ }
+
+ DBG (DBG_info, "gl846_led_calibration: average: %d,%d,%d\n", avg[0], avg[1], avg[2]);
+
+ /* check if exposure gives average within the boundaries */
+ acceptable = SANE_TRUE;
+ for(i=0;i<3;i++)
+ {
+ if(avg[i]<bottom[i])
+ {
+ exp[i]=(exp[i]*bottom[i])/avg[i];
+ acceptable = SANE_FALSE;
+ }
+ if(avg[i]>top[i])
+ {
+ exp[i]=(exp[i]*top[i])/avg[i];
+ acceptable = SANE_FALSE;
+ }
+ }
+
+ turn++;
+ }
+ while (!acceptable && turn < 100);
+
+ DBG (DBG_info, "gl846_led_calibration: acceptable exposure: %d,%d,%d\n", exp[0], exp[1], exp[2]);
+
+ /* set these values as final ones for scan */
+ sanei_genesys_set_double(dev->reg,REG_EXPR,exp[0]);
+ sanei_genesys_set_double(dev->reg,REG_EXPG,exp[1]);
+ sanei_genesys_set_double(dev->reg,REG_EXPB,exp[2]);
+
+ /* store in this struct since it is the one used by cache calibration */
+ dev->sensor.regs_0x10_0x1d[0] = (exp[0] >> 8) & 0xff;
+ dev->sensor.regs_0x10_0x1d[1] = exp[0] & 0xff;
+ dev->sensor.regs_0x10_0x1d[2] = (exp[1] >> 8) & 0xff;
+ dev->sensor.regs_0x10_0x1d[3] = exp[1] & 0xff;
+ dev->sensor.regs_0x10_0x1d[4] = (exp[2] >> 8) & 0xff;
+ dev->sensor.regs_0x10_0x1d[5] = exp[2] & 0xff;
+
+ /* cleanup before return */
+ free (line);
+
+ /* go back home */
+ if(move>20)
+ {
+ status=gl846_slow_back_home (dev, SANE_TRUE);
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * set up GPIO/GPOE for idle state
+ */
+static SANE_Status
+gl846_init_gpio (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int idx=0;
+
+ DBGSTART;
+
+ /* search GPIO profile */
+ while(gpios[idx].sensor_id!=0 && dev->model->gpo_type!=gpios[idx].sensor_id)
+ {
+ idx++;
+ }
+ if(gpios[idx].sensor_id==0)
+ {
+ DBG (DBG_error, "%s: failed to find GPIO profile for sensor_id=%d\n", __FUNCTION__, dev->model->ccd_type);
+ return SANE_STATUS_INVAL;
+ }
+
+ RIE (sanei_genesys_write_register (dev, REGA7, gpios[idx].ra7));
+ RIE (sanei_genesys_write_register (dev, REGA6, gpios[idx].ra6));
+
+ RIE (sanei_genesys_write_register (dev, REG6B, gpios[idx].r6b));
+ RIE (sanei_genesys_write_register (dev, REG6C, gpios[idx].r6c));
+ RIE (sanei_genesys_write_register (dev, REG6D, gpios[idx].r6d));
+ RIE (sanei_genesys_write_register (dev, REG6E, gpios[idx].r6e));
+ RIE (sanei_genesys_write_register (dev, REG6F, gpios[idx].r6f));
+
+ RIE (sanei_genesys_write_register (dev, REGA8, gpios[idx].ra8));
+ RIE (sanei_genesys_write_register (dev, REGA9, gpios[idx].ra9));
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * set memory layout by filling values in dedicated registers
+ */
+static SANE_Status
+gl846_init_memory_layout (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int idx = 0, i;
+ uint8_t val;
+
+ DBGSTART
+
+ /* point to per model memory layout */
+ idx = 0;
+ while(layouts[idx].model!=NULL && strcmp(dev->model->name,layouts[idx].model)!=0)
+ {
+ if(strcmp(dev->model->name,layouts[idx].model)!=0)
+ idx++;
+ }
+ if(layouts[idx].model==NULL)
+ {
+ DBG(DBG_error, "%s: failed to find memory layout for model %s!\n", __FUNCTION__, dev->model->name);
+ return SANE_STATUS_INVAL;
+ }
+
+ /* CLKSET and DRAMSEL */
+ val = layouts[idx].dramsel;
+ RIE (sanei_genesys_write_register (dev, REG0B, val));
+ dev->reg[reg_0x0b].value = val;
+
+ /* prevent further writings by bulk write register */
+ dev->reg[reg_0x0b].address = 0x00;
+
+ /* setup base address for shading and scanned data. */
+ for(i=0;i<10;i++)
+ {
+ sanei_genesys_write_register (dev, 0xe0+i, layouts[idx].rx[i]);
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/* *
+ * initialize ASIC from power on condition
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl846_boot (Genesys_Device * dev, SANE_Bool cold)
+{
+ SANE_Status status;
+ uint8_t val;
+
+ DBGSTART;
+
+ /* reset ASIC if cold boot */
+ if(cold)
+ {
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x01));
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x00));
+ }
+
+ if(dev->usb_mode == 1)
+ {
+ val = 0x14;
+ }
+ else
+ {
+ val = 0x11;
+ }
+ RIE (sanei_genesys_write_0x8c (dev, 0x0f, val));
+
+ /* test CHKVER */
+ RIE (sanei_genesys_read_register (dev, REG40, &val));
+ if (val & REG40_CHKVER)
+ {
+ RIE (sanei_genesys_read_register (dev, 0x00, &val));
+ DBG (DBG_info, "%s: reported version for genesys chip is 0x%02x\n", __FUNCTION__, val);
+ }
+
+ /* Set default values for registers */
+ gl846_init_registers (dev);
+
+ /* Write initial registers */
+ RIE (dev->model->cmd_set->bulk_write_register (dev, dev->reg, GENESYS_GL846_MAX_REGS));
+
+ /* Enable DRAM by setting a rising edge on bit 3 of reg 0x0b */
+ val = dev->reg[reg_0x0b].value & REG0B_DRAMSEL;
+ val = (val | REG0B_ENBDRAM);
+ RIE (sanei_genesys_write_register (dev, REG0B, val));
+ dev->reg[reg_0x0b].value = val;
+
+ /* CIS_LINE */
+ if (dev->model->is_cis)
+ {
+ SETREG (0x08, REG08_CIS_LINE);
+ RIE (sanei_genesys_write_register (dev, 0x08, dev->reg[reg_0x08].value));
+ }
+
+ /* set up clocks */
+ RIE (sanei_genesys_write_0x8c (dev, 0x10, 0x0e));
+ RIE (sanei_genesys_write_0x8c (dev, 0x13, 0x0e));
+
+ /* setup gpio */
+ RIE (gl846_init_gpio (dev));
+
+ /* setup internal memory layout */
+ RIE (gl846_init_memory_layout (dev));
+
+ SETREG (0xf8, 0x05);
+ RIE (sanei_genesys_write_register (dev, 0xf8, dev->reg[reg_0xf8].value));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * initialize backend and ASIC : registers, motor tables, and gamma tables
+ * then ensure scanner's head is at home
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status gl846_init (Genesys_Device * dev)
+{
+ SANE_Status status;
+
+ DBG_INIT ();
+ DBGSTART;
+
+ status=sanei_genesys_asic_init(dev, GENESYS_GL846_MAX_REGS);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+static SANE_Status
+gl846_update_hardware_sensors (Genesys_Scanner * s)
+{
+ /* do what is needed to get a new set of events, but try to not lose
+ any of them.
+ */
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+ uint8_t scan, file, email, copy;
+ switch(s->dev->model->gpo_type)
+ {
+ default:
+ scan=0x01;
+ file=0x02;
+ email=0x04;
+ copy=0x08;
+ }
+ RIE (sanei_genesys_read_register (s->dev, REG6D, &val));
+
+ if (s->val[OPT_SCAN_SW].b == s->last_val[OPT_SCAN_SW].b)
+ s->val[OPT_SCAN_SW].b = (val & scan) == 0;
+ if (s->val[OPT_FILE_SW].b == s->last_val[OPT_FILE_SW].b)
+ s->val[OPT_FILE_SW].b = (val & file) == 0;
+ if (s->val[OPT_EMAIL_SW].b == s->last_val[OPT_EMAIL_SW].b)
+ s->val[OPT_EMAIL_SW].b = (val & email) == 0;
+ if (s->val[OPT_COPY_SW].b == s->last_val[OPT_COPY_SW].b)
+ s->val[OPT_COPY_SW].b = (val & copy) == 0;
+
+ return status;
+}
+
+/** @brief search for a full width black or white strip.
+ * This function searches for a black or white stripe across the scanning area.
+ * When searching backward, the searched area must completely be of the desired
+ * color since this area will be used for calibration which scans forward.
+ * @param dev scanner device
+ * @param forward SANE_TRUE if searching forward, SANE_FALSE if searching backward
+ * @param black SANE_TRUE if searching for a black strip, SANE_FALSE for a white strip
+ * @return SANE_STATUS_GOOD if a matching strip is found, SANE_STATUS_UNSUPPORTED if not
+ */
+static SANE_Status
+gl846_search_strip (Genesys_Device * dev, SANE_Bool forward, SANE_Bool black)
+{
+ unsigned int pixels, lines, channels;
+ SANE_Status status;
+ Genesys_Register_Set local_reg[GENESYS_GL846_MAX_REGS];
+ size_t size;
+ uint8_t *data;
+ int steps, depth, dpi;
+ unsigned int pass, count, found, x, y;
+ char title[80];
+ Genesys_Register_Set *r;
+
+ DBG (DBG_proc, "gl846_search_strip %s %s\n", black ? "black" : "white",
+ forward ? "forward" : "reverse");
+
+ gl846_set_fe (dev, AFE_SET);
+ status = gl846_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_search_strip: failed to stop: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* set up for a gray scan at lowest dpi */
+ dpi = 9600;
+ for (x = 0; x < MAX_RESOLUTIONS; x++)
+ {
+ if (dev->model->xdpi_values[x] > 0 && dev->model->xdpi_values[x] < dpi)
+ dpi = dev->model->xdpi_values[x];
+ }
+ channels = 1;
+ /* 10 MM */
+ /* lines = (10 * dpi) / MM_PER_INCH; */
+ /* shading calibation is done with dev->motor.base_ydpi */
+ lines = (dev->model->shading_lines * dpi) / dev->motor.base_ydpi;
+ depth = 8;
+ pixels = (dev->sensor.sensor_pixels * dpi) / dev->sensor.optical_res;
+ size = pixels * channels * lines * (depth / 8);
+ data = malloc (size);
+ if (!data)
+ {
+ DBG (DBG_error, "gl846_search_strip: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+ dev->scanhead_position_in_steps = 0;
+
+ memcpy (local_reg, dev->reg,
+ GENESYS_GL846_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ status = gl846_init_scan_regs (dev,
+ local_reg,
+ dpi,
+ dpi,
+ 0,
+ 0,
+ pixels,
+ lines,
+ depth,
+ channels,
+ 0,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free(data);
+ DBG (DBG_error,
+ "gl846_search_strip: failed to setup for scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* set up for reverse or forward */
+ r = sanei_genesys_get_address (local_reg, REG02);
+ if (forward)
+ r->value &= ~REG02_MTRREV;
+ else
+ r->value |= REG02_MTRREV;
+
+
+ status = dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL846_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free(data);
+ DBG (DBG_error,
+ "gl846_search_strip: Failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl846_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_strip: failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner (dev, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl846_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error, "gl846_search_strip: gl846_stop_action failed\n");
+ return status;
+ }
+
+ pass = 0;
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf (title, "search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)pass);
+ sanei_genesys_write_pnm_file (title, data, depth, channels, pixels,
+ lines);
+ }
+
+ /* loop until strip is found or maximum pass number done */
+ found = 0;
+ while (pass < 20 && !found)
+ {
+ status = dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL846_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_search_strip: Failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* now start scan */
+ status = gl846_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_strip: failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner (dev, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl846_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl846_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error, "gl846_search_strip: gl846_stop_action failed\n");
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf (title, "search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)pass);
+ sanei_genesys_write_pnm_file (title, data, depth, channels,
+ pixels, lines);
+ }
+
+ /* search data to find black strip */
+ /* when searching forward, we only need one line of the searched color since we
+ * will scan forward. But when doing backward search, we need all the area of the
+ * same color */
+ if (forward)
+ {
+ for (y = 0; y < lines && !found; y++)
+ {
+ count = 0;
+ /* count of white/black pixels depending on the color searched */
+ for (x = 0; x < pixels; x++)
+ {
+ /* when searching for black, detect white pixels */
+ if (black && data[y * pixels + x] > 90)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < 60)
+ {
+ count++;
+ }
+ }
+
+ /* at end of line, if count >= 3%, line is not fully of the desired color
+ * so we must go to next line of the buffer */
+ /* count*100/pixels < 3 */
+ if ((count * 100) / pixels < 3)
+ {
+ found = 1;
+ DBG (DBG_data,
+ "gl846_search_strip: strip found forward during pass %d at line %d\n",
+ pass, y);
+ }
+ else
+ {
+ DBG (DBG_data,
+ "gl846_search_strip: pixels=%d, count=%d (%d%%)\n",
+ pixels, count, (100 * count) / pixels);
+ }
+ }
+ }
+ else /* since calibration scans are done forward, we need the whole area
+ to be of the required color when searching backward */
+ {
+ count = 0;
+ for (y = 0; y < lines; y++)
+ {
+ /* count of white/black pixels depending on the color searched */
+ for (x = 0; x < pixels; x++)
+ {
+ /* when searching for black, detect white pixels */
+ if (black && data[y * pixels + x] > 90)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < 60)
+ {
+ count++;
+ }
+ }
+ }
+
+ /* at end of area, if count >= 3%, area is not fully of the desired color
+ * so we must go to next buffer */
+ if ((count * 100) / (pixels * lines) < 3)
+ {
+ found = 1;
+ DBG (DBG_data,
+ "gl846_search_strip: strip found backward during pass %d \n",
+ pass);
+ }
+ else
+ {
+ DBG (DBG_data,
+ "gl846_search_strip: pixels=%d, count=%d (%d%%)\n",
+ pixels, count, (100 * count) / pixels);
+ }
+ }
+ pass++;
+ }
+ free (data);
+ if (found)
+ {
+ status = SANE_STATUS_GOOD;
+ DBG (DBG_info, "gl846_search_strip: %s strip found\n",
+ black ? "black" : "white");
+ }
+ else
+ {
+ status = SANE_STATUS_UNSUPPORTED;
+ DBG (DBG_info, "gl846_search_strip: %s strip not found\n",
+ black ? "black" : "white");
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * average dark pixels of a 8 bits scan
+ */
+static int
+dark_average (uint8_t * data, unsigned int pixels, unsigned int lines,
+ unsigned int channels, unsigned int black)
+{
+ unsigned int i, j, k, average, count;
+ unsigned int avg[3];
+ uint8_t val;
+
+ /* computes average value on black margin */
+ for (k = 0; k < channels; k++)
+ {
+ avg[k] = 0;
+ count = 0;
+ for (i = 0; i < lines; i++)
+ {
+ for (j = 0; j < black; j++)
+ {
+ val = data[i * channels * pixels + j + k];
+ avg[k] += val;
+ count++;
+ }
+ }
+ if (count)
+ avg[k] /= count;
+ DBG (DBG_info, "dark_average: avg[%d] = %d\n", k, avg[k]);
+ }
+ average = 0;
+ for (i = 0; i < channels; i++)
+ average += avg[i];
+ average /= channels;
+ DBG (DBG_info, "dark_average: average = %d\n", average);
+ return average;
+}
+
+static SANE_Status
+gl846_offset_calibration (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t *first_line, *second_line, reg04;
+ unsigned int channels, bpp;
+ char title[32];
+ int pass = 0, avg, total_size;
+ int topavg, bottomavg, resolution, lines;
+ int top, bottom, black_pixels, pixels;
+
+ DBGSTART;
+
+ /* no gain nor offset for AKM AFE */
+ RIE (sanei_genesys_read_register (dev, REG04, &reg04));
+ if ((reg04 & REG04_FESET) == 0x02)
+ {
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ resolution=dev->sensor.optical_res;
+ dev->calib_pixels = dev->sensor.sensor_pixels;
+ lines=1;
+ bpp=8;
+ pixels= (dev->sensor.sensor_pixels*resolution) / dev->sensor.optical_res;
+ black_pixels = (dev->sensor.black_pixels * resolution) / dev->sensor.optical_res;
+ DBG (DBG_io2, "gl846_offset_calibration: black_pixels=%d\n", black_pixels);
+
+ status = gl846_init_scan_regs (dev,
+ dev->calib_reg,
+ resolution,
+ resolution,
+ 0,
+ 0,
+ pixels,
+ lines,
+ bpp,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_offset_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ gl846_set_motor_power (dev->calib_reg, SANE_FALSE);
+
+ /* allocate memory for scans */
+ total_size = pixels * channels * lines * (bpp/8); /* colors * bytes_per_color * scan lines */
+
+ first_line = malloc (total_size);
+ if (!first_line)
+ return SANE_STATUS_NO_MEM;
+
+ second_line = malloc (total_size);
+ if (!second_line)
+ {
+ free (first_line);
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* init gain */
+ dev->frontend.gain[0] = 0;
+ dev->frontend.gain[1] = 0;
+ dev->frontend.gain[2] = 0;
+
+ /* scan with no move */
+ bottom = 10;
+ dev->frontend.offset[0] = bottom;
+ dev->frontend.offset[1] = bottom;
+ dev->frontend.offset[2] = bottom;
+
+ RIEF2 (gl846_set_fe(dev, AFE_SET), first_line, second_line);
+ RIEF2 (dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL846_MAX_REGS), first_line, second_line);
+ DBG (DBG_info, "gl846_offset_calibration: starting first line reading\n");
+ RIEF2 (gl846_begin_scan (dev, dev->calib_reg, SANE_TRUE), first_line, second_line);
+ RIEF2 (sanei_genesys_read_data_from_scanner (dev, first_line, total_size), first_line, second_line);
+ if (DBG_LEVEL >= DBG_data)
+ {
+ snprintf(title,20,"offset%03d.pnm",bottom);
+ sanei_genesys_write_pnm_file (title, first_line, bpp, channels, pixels, lines);
+ }
+
+ bottomavg = dark_average (first_line, pixels, lines, channels, black_pixels);
+ DBG (DBG_io2, "gl846_offset_calibration: bottom avg=%d\n", bottomavg);
+
+ /* now top value */
+ top = 255;
+ dev->frontend.offset[0] = top;
+ dev->frontend.offset[1] = top;
+ dev->frontend.offset[2] = top;
+ RIEF2 (gl846_set_fe(dev, AFE_SET), first_line, second_line);
+ RIEF2 (dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL846_MAX_REGS), first_line, second_line);
+ DBG (DBG_info, "gl846_offset_calibration: starting second line reading\n");
+ RIEF2 (gl846_begin_scan (dev, dev->calib_reg, SANE_TRUE), first_line, second_line);
+ RIEF2 (sanei_genesys_read_data_from_scanner (dev, second_line, total_size), first_line, second_line);
+
+ topavg = dark_average (second_line, pixels, lines, channels, black_pixels);
+ DBG (DBG_io2, "gl846_offset_calibration: top avg=%d\n", topavg);
+
+ /* loop until acceptable level */
+ while ((pass < 32) && (top - bottom > 1))
+ {
+ pass++;
+
+ /* settings for new scan */
+ dev->frontend.offset[0] = (top + bottom) / 2;
+ dev->frontend.offset[1] = (top + bottom) / 2;
+ dev->frontend.offset[2] = (top + bottom) / 2;
+
+ /* scan with no move */
+ RIEF2 (gl846_set_fe(dev, AFE_SET), first_line, second_line);
+ RIEF2 (dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL846_MAX_REGS), first_line, second_line);
+ DBG (DBG_info, "gl846_offset_calibration: starting second line reading\n");
+ RIEF2 (gl846_begin_scan (dev, dev->calib_reg, SANE_TRUE), first_line, second_line);
+ RIEF2 (sanei_genesys_read_data_from_scanner (dev, second_line, total_size), first_line, second_line);
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf (title, "offset%03d.pnm", dev->frontend.offset[1]);
+ sanei_genesys_write_pnm_file (title, second_line, bpp, channels, pixels, lines);
+ }
+
+ avg = dark_average (second_line, pixels, lines, channels, black_pixels);
+ DBG (DBG_info, "gl846_offset_calibration: avg=%d offset=%d\n", avg,
+ dev->frontend.offset[1]);
+
+ /* compute new boundaries */
+ if (topavg == avg)
+ {
+ topavg = avg;
+ top = dev->frontend.offset[1];
+ }
+ else
+ {
+ bottomavg = avg;
+ bottom = dev->frontend.offset[1];
+ }
+ }
+ DBG (DBG_info, "gl846_offset_calibration: offset=(%d,%d,%d)\n", dev->frontend.offset[0], dev->frontend.offset[1], dev->frontend.offset[2]);
+
+ /* cleanup before return */
+ free (first_line);
+ free (second_line);
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl846_coarse_gain_calibration (Genesys_Device * dev, int dpi)
+{
+ int pixels;
+ int total_size;
+ uint8_t *line, reg04;
+ int i, j, channels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int max[3];
+ float gain[3],coeff;
+ int val, code, lines;
+ int resolution;
+ int bpp;
+
+ DBG (DBG_proc, "gl846_coarse_gain_calibration: dpi = %d\n", dpi);
+
+ /* no gain nor offset for AKM AFE */
+ RIE (sanei_genesys_read_register (dev, REG04, &reg04));
+ if ((reg04 & REG04_FESET) == 0x02)
+ {
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* coarse gain calibration is always done in color mode */
+ channels = 3;
+
+ /* follow CKSEL */
+ if(dev->settings.xres<dev->sensor.optical_res)
+ {
+ coeff=0.9;
+ /*resolution=dev->sensor.optical_res/2;*/
+ resolution=dev->sensor.optical_res;
+ }
+ else
+ {
+ resolution=dev->sensor.optical_res;
+ coeff=1.0;
+ }
+ lines=10;
+ bpp=8;
+ pixels = (dev->sensor.sensor_pixels * resolution) / dev->sensor.optical_res;
+
+ status = gl846_init_scan_regs (dev,
+ dev->calib_reg,
+ resolution,
+ resolution,
+ 0,
+ 0,
+ pixels,
+ lines,
+ bpp,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+ gl846_set_motor_power (dev->calib_reg, SANE_FALSE);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl846_coarse_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ RIE (dev->model->cmd_set->bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL846_MAX_REGS));
+
+ total_size = pixels * channels * (16/bpp) * lines;
+
+ line = malloc (total_size);
+ if (!line)
+ return SANE_STATUS_NO_MEM;
+
+ RIEF (gl846_set_fe(dev, AFE_SET), line);
+ RIEF (gl846_begin_scan (dev, dev->calib_reg, SANE_TRUE), line);
+ RIEF (sanei_genesys_read_data_from_scanner (dev, line, total_size), line);
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("coarse.pnm", line, bpp, channels, pixels, lines);
+
+ /* average value on each channel */
+ for (j = 0; j < channels; j++)
+ {
+ max[j] = 0;
+ for (i = pixels/4; i < (pixels*3/4); i++)
+ {
+ if(bpp==16)
+ {
+ if (dev->model->is_cis)
+ val =
+ line[i * 2 + j * 2 * pixels + 1] * 256 +
+ line[i * 2 + j * 2 * pixels];
+ else
+ val =
+ line[i * 2 * channels + 2 * j + 1] * 256 +
+ line[i * 2 * channels + 2 * j];
+ }
+ else
+ {
+ if (dev->model->is_cis)
+ val = line[i + j * pixels];
+ else
+ val = line[i * channels + j];
+ }
+
+ max[j] += val;
+ }
+ max[j] = max[j] / (pixels/2);
+
+ gain[j] = ((float) dev->sensor.gain_white_ref*coeff) / max[j];
+
+ /* turn logical gain value into gain code, checking for overflow */
+ code = 283 - 208 / gain[j];
+ if (code > 255)
+ code = 255;
+ else if (code < 0)
+ code = 0;
+ dev->frontend.gain[j] = code;
+
+ DBG (DBG_proc,
+ "gl846_coarse_gain_calibration: channel %d, max=%d, gain = %f, setting:%d\n",
+ j, max[j], gain[j], dev->frontend.gain[j]);
+ }
+
+ if (dev->model->is_cis)
+ {
+ if (dev->frontend.gain[0] > dev->frontend.gain[1])
+ dev->frontend.gain[0] = dev->frontend.gain[1];
+ if (dev->frontend.gain[0] > dev->frontend.gain[2])
+ dev->frontend.gain[0] = dev->frontend.gain[2];
+ dev->frontend.gain[2] = dev->frontend.gain[1] = dev->frontend.gain[0];
+ }
+
+ if (channels == 1)
+ {
+ dev->frontend.gain[0] = dev->frontend.gain[1];
+ dev->frontend.gain[2] = dev->frontend.gain[1];
+ }
+
+ free (line);
+
+ RIE (gl846_stop_action (dev));
+
+ status=gl846_slow_back_home (dev, SANE_TRUE);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** the gl846 command set */
+static Genesys_Command_Set gl846_cmd_set = {
+ "gl846-generic", /* the name of this set */
+
+ gl846_init,
+ NULL,
+ gl846_init_regs_for_coarse_calibration,
+ gl846_init_regs_for_shading,
+ gl846_init_regs_for_scan,
+
+ gl846_get_filter_bit,
+ gl846_get_lineart_bit,
+ gl846_get_bitset_bit,
+ gl846_get_gain4_bit,
+ gl846_get_fast_feed_bit,
+ gl846_test_buffer_empty_bit,
+ gl846_test_motor_flag_bit,
+
+ gl846_bulk_full_size,
+
+ gl846_set_fe,
+ gl846_set_powersaving,
+ gl846_save_power,
+
+ gl846_set_motor_power,
+ gl846_set_lamp_power,
+
+ gl846_begin_scan,
+ gl846_end_scan,
+
+ sanei_genesys_send_gamma_table,
+
+ gl846_search_start_position,
+
+ gl846_offset_calibration,
+ gl846_coarse_gain_calibration,
+ gl846_led_calibration,
+
+ gl846_slow_back_home,
+
+ sanei_genesys_bulk_write_register,
+ NULL,
+ gl846_bulk_read_data,
+
+ gl846_update_hardware_sensors,
+
+ NULL,
+ NULL,
+ NULL,
+ gl846_search_strip,
+
+ sanei_genesys_is_compatible_calibration,
+ NULL,
+ gl846_send_shading_data,
+ gl846_calculate_current_setup,
+ gl846_boot
+};
+
+SANE_Status
+sanei_gl846_init_cmd_set (Genesys_Device * dev)
+{
+ dev->model->cmd_set = &gl846_cmd_set;
+ return SANE_STATUS_GOOD;
+}
+
+/* vim: set sw=2 cino=>2se-1sn-1s{s^-1st0(0u0 smarttab expandtab: */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 07:11:32 +0000