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-rw-r--r--ft2232_spi.c477
1 files changed, 316 insertions, 161 deletions
diff --git a/ft2232_spi.c b/ft2232_spi.c
index 65ff4490b..7d7283bc9 100644
--- a/ft2232_spi.c
+++ b/ft2232_spi.c
@@ -14,8 +14,7 @@
* GNU General Public License for more details.
*/
-#if CONFIG_FT2232_SPI == 1
-
+#include <stdbool.h>
#include <stdio.h>
#include <strings.h>
#include <string.h>
@@ -27,7 +26,7 @@
#include <ftdi.h>
/* This is not defined in libftdi.h <0.20 (c7e4c09e68cfa6f5e112334aa1b3bb23401c8dc7 to be exact).
- * Some tests indicate that his is the only change that it is needed to support the FT232H in flashrom. */
+ * Some tests indicate that this is the only change that it is needed to support the FT232H in flashrom. */
#if !defined(HAVE_FT232H)
#define TYPE_232H 6
#endif
@@ -38,8 +37,10 @@
#define FTDI_FT2232H_PID 0x6010
#define FTDI_FT4232H_PID 0x6011
#define FTDI_FT232H_PID 0x6014
+#define FTDI_FT4233H_PID 0x6041
#define TIAO_TUMPA_PID 0x8a98
#define TIAO_TUMPA_LITE_PID 0x8a99
+#define KT_LINK_PID 0xbbe2
#define AMONTEC_JTAGKEY_PID 0xCFF8
#define GOEPEL_VID 0x096C
@@ -59,12 +60,14 @@
#define GOOGLE_SERVO_V2_PID0 0x5002
#define GOOGLE_SERVO_V2_PID1 0x5003
-const struct dev_entry devs_ft2232spi[] = {
+static const struct dev_entry devs_ft2232spi[] = {
{FTDI_VID, FTDI_FT2232H_PID, OK, "FTDI", "FT2232H"},
{FTDI_VID, FTDI_FT4232H_PID, OK, "FTDI", "FT4232H"},
{FTDI_VID, FTDI_FT232H_PID, OK, "FTDI", "FT232H"},
+ {FTDI_VID, FTDI_FT4233H_PID, OK, "FTDI", "FT4233H"},
{FTDI_VID, TIAO_TUMPA_PID, OK, "TIAO", "USB Multi-Protocol Adapter"},
{FTDI_VID, TIAO_TUMPA_LITE_PID, OK, "TIAO", "USB Multi-Protocol Adapter Lite"},
+ {FTDI_VID, KT_LINK_PID, OK, "Kristech", "KT-LINK"},
{FTDI_VID, AMONTEC_JTAGKEY_PID, OK, "Amontec", "JTAGkey"},
{GOEPEL_VID, GOEPEL_PICOTAP_PID, OK, "GOEPEL", "PicoTAP"},
{GOOGLE_VID, GOOGLE_SERVO_PID, OK, "Google", "Servo"},
@@ -79,13 +82,26 @@ const struct dev_entry devs_ft2232spi[] = {
{0},
};
+#define FTDI_HW_BUFFER_SIZE 4096 /* in bytes */
+
#define DEFAULT_DIVISOR 2
#define BITMODE_BITBANG_NORMAL 1
#define BITMODE_BITBANG_SPI 2
-/* The variables cs_bits and pindir store the values for the "set data bits low byte" MPSSE command that
- * sets the initial state and the direction of the I/O pins. The pin offsets are as follows:
+/*
+ * The variables `cs_bits` and `pindir` store the values for the
+ * "set data bits low byte" MPSSE command that sets the initial
+ * state and the direction of the I/O pins. `cs_bits` pins default
+ * to high and will be toggled during SPI transactions. All other
+ * output pins will be kept low all the time. For some programmers,
+ * some reserved GPIOL* pins are used as outputs. Free GPIOL* pins
+ * are configured as inputs, while it's possible to use them either
+ * as generic gpios or as additional CS# signal(s) through the
+ * parameter(s) `gpiolX`. On exit, all pins will be reconfigured
+ * as inputs.
+ *
+ * The pin offsets are as follows:
* TCK/SK is bit 0.
* TDI/DO is bit 1.
* TDO/DI is bit 2.
@@ -95,16 +111,17 @@ const struct dev_entry devs_ft2232spi[] = {
* GPIOL2 is bit 6.
* GPIOL3 is bit 7.
*
- * The pin signal direction bit offsets follow the same order; 0 means that
- * pin at the matching bit index is an input, 1 means pin is an output.
- *
- * The default values (set below) are used for most devices:
- * value: 0x08 CS=high, DI=low, DO=low, SK=low
+ * The default values (set below in ft2232_spi_init) are used for
+ * most devices:
+ * value: 0x08 CS=high, DI=low, DO=low, SK=low
* dir: 0x0b CS=output, DI=input, DO=output, SK=output
*/
-static uint8_t cs_bits = 0x08;
-static uint8_t pindir = 0x0b;
-static struct ftdi_context ftdic_context;
+struct ft2232_data {
+ uint8_t cs_bits;
+ uint8_t aux_bits;
+ uint8_t pindir;
+ struct ftdi_context ftdic_context;
+};
static const char *get_ft2232_devicename(int ft2232_vid, int ft2232_type)
{
@@ -159,27 +176,135 @@ static int get_buf(struct ftdi_context *ftdic, const unsigned char *buf,
return 0;
}
-static int ft2232_spi_send_command(const struct flashctx *flash,
- unsigned int writecnt, unsigned int readcnt,
- const unsigned char *writearr,
- unsigned char *readarr);
+static int ft2232_shutdown(void *data)
+{
+ struct ft2232_data *spi_data = (struct ft2232_data *) data;
+ struct ftdi_context *ftdic = &spi_data->ftdic_context;
+ unsigned char buf[3];
+ int ret = 0;
+
+ msg_pdbg("Releasing I/Os\n");
+ buf[0] = SET_BITS_LOW;
+ buf[1] = 0; /* Output byte ignored */
+ buf[2] = 0; /* Pin direction: all inputs */
+ if (send_buf(ftdic, buf, 3)) {
+ msg_perr("Unable to set pins back to inputs.\n");
+ ret = 1;
+ }
+
+ const int close_ret = ftdi_usb_close(ftdic);
+ if (close_ret < 0) {
+ msg_perr("Unable to close FTDI device: %d (%s)\n", close_ret,
+ ftdi_get_error_string(ftdic));
+ ret = 1;
+ }
+
+ free(spi_data);
+ return ret;
+}
+
+static bool ft2232_spi_command_fits(const struct spi_command *cmd, size_t buffer_size)
+{
+ const size_t cmd_len = 3; /* same length for any ft2232 command */
+ return
+ /* commands for CS# assertion and de-assertion: */
+ cmd_len + cmd_len
+ /* commands for either a write, a read or both: */
+ + (cmd->writecnt && cmd->readcnt ? cmd_len + cmd_len : cmd_len)
+ /* payload (only writecnt; readcnt concerns another buffer): */
+ + cmd->writecnt
+ <= buffer_size;
+}
+
+/* Returns 0 upon success, a negative number upon errors. */
+static int ft2232_spi_send_multicommand(const struct flashctx *flash, struct spi_command *cmds)
+{
+ struct ft2232_data *spi_data = flash->mst->spi.data;
+ struct ftdi_context *ftdic = &spi_data->ftdic_context;
+ static unsigned char buf[FTDI_HW_BUFFER_SIZE];
+ size_t i = 0;
+ int ret = 0;
+
+ /*
+ * Minimize FTDI-calls by packing as many commands as possible together.
+ */
+ for (; cmds->writecnt || cmds->readcnt; cmds++) {
+
+ if (cmds->writecnt > 65536 || cmds->readcnt > 65536)
+ return SPI_INVALID_LENGTH;
+
+ if (!ft2232_spi_command_fits(cmds, FTDI_HW_BUFFER_SIZE - i)) {
+ msg_perr("Command does not fit\n");
+ return SPI_GENERIC_ERROR;
+ }
+
+ msg_pspew("Assert CS#\n");
+ buf[i++] = SET_BITS_LOW;
+ /* assert CS# pins, keep aux_bits, all other output pins stay low */
+ buf[i++] = spi_data->aux_bits;
+ buf[i++] = spi_data->pindir;
+
+ /* WREN, OP(PROGRAM, ERASE), ADDR, DATA */
+ if (cmds->writecnt) {
+ buf[i++] = MPSSE_DO_WRITE | MPSSE_WRITE_NEG;
+ buf[i++] = (cmds->writecnt - 1) & 0xff;
+ buf[i++] = ((cmds->writecnt - 1) >> 8) & 0xff;
+ memcpy(buf + i, cmds->writearr, cmds->writecnt);
+ i += cmds->writecnt;
+ }
+
+ /* An optional read command */
+ if (cmds->readcnt) {
+ buf[i++] = MPSSE_DO_READ;
+ buf[i++] = (cmds->readcnt - 1) & 0xff;
+ buf[i++] = ((cmds->readcnt - 1) >> 8) & 0xff;
+ }
+
+ /* Add final de-assert CS# */
+ msg_pspew("De-assert CS#\n");
+ buf[i++] = SET_BITS_LOW;
+ buf[i++] = spi_data->cs_bits | spi_data->aux_bits;
+ buf[i++] = spi_data->pindir;
+
+ /* continue if there is no read-cmd and further cmds exist */
+ if (!cmds->readcnt &&
+ ((cmds + 1)->writecnt || (cmds + 1)->readcnt) &&
+ ft2232_spi_command_fits((cmds + 1), FTDI_HW_BUFFER_SIZE - i)) {
+ continue;
+ }
+
+ ret = send_buf(ftdic, buf, i);
+ i = 0;
+ if (ret) {
+ msg_perr("send_buf failed: %i\n", ret);
+ break;
+ }
+
+ if (cmds->readcnt) {
+ ret = get_buf(ftdic, cmds->readarr, cmds->readcnt);
+ if (ret) {
+ msg_perr("get_buf failed: %i\n", ret);
+ break;
+ }
+ }
+ }
+ return ret ? -1 : 0;
+}
static const struct spi_master spi_master_ft2232 = {
.features = SPI_MASTER_4BA,
.max_data_read = 64 * 1024,
.max_data_write = 256,
- .command = ft2232_spi_send_command,
- .multicommand = default_spi_send_multicommand,
+ .multicommand = ft2232_spi_send_multicommand,
.read = default_spi_read,
.write_256 = default_spi_write_256,
- .write_aai = default_spi_write_aai,
+ .shutdown = ft2232_shutdown,
};
/* Returns 0 upon success, a negative number upon errors. */
-int ft2232_spi_init(void)
+static int ft2232_spi_init(const struct programmer_cfg *cfg)
{
int ret = 0;
- struct ftdi_context *ftdic = &ftdic_context;
unsigned char buf[512];
int ft2232_vid = FTDI_VID;
int ft2232_type = FTDI_FT4232H_PID;
@@ -190,7 +315,7 @@ int ft2232_spi_init(void)
* but the non-H chips can only run at 12 MHz. We disable the divide-by-5
* prescaler on 'H' chips so they run at 60MHz.
*/
- uint8_t clock_5x = 1;
+ bool clock_5x = true;
/* In addition to the prescaler mentioned above there is also another
* configurable one on all versions of the chips. Its divisor div can be
* set by a 16 bit value x according to the following formula:
@@ -202,10 +327,18 @@ int ft2232_spi_init(void)
*/
uint32_t divisor = DEFAULT_DIVISOR;
int f;
- char *arg;
+ char *arg, *arg2;
double mpsse_clk;
- arg = extract_programmer_param("type");
+ uint8_t cs_bits = 0x08;
+ uint8_t aux_bits = 0x00;
+ uint8_t pindir = 0x0b;
+ uint8_t aux_bits_high = 0x00;
+ uint8_t pindir_high = 0x00;
+ struct ftdi_context ftdic;
+ struct ft2232_data *spi_data;
+
+ arg = extract_programmer_param_str(cfg, "type");
if (arg) {
if (!strcasecmp(arg, "2232H")) {
ft2232_type = FTDI_FT2232H_PID;
@@ -216,6 +349,9 @@ int ft2232_spi_init(void)
} else if (!strcasecmp(arg, "232H")) {
ft2232_type = FTDI_FT232H_PID;
channel_count = 1;
+ } else if (!strcasecmp(arg, "4233H")) {
+ ft2232_type = FTDI_FT4233H_PID;
+ channel_count = 4;
} else if (!strcasecmp(arg, "jtagkey")) {
ft2232_type = AMONTEC_JTAGKEY_PID;
channel_count = 2;
@@ -287,6 +423,17 @@ int ft2232_spi_init(void)
/* Flyswatter and Flyswatter-2 require GPIO bits 0x80
* and 0x40 to be driven low to enable output buffers */
pindir = 0xcb;
+ } else if (!strcasecmp(arg, "kt-link")) {
+ ft2232_type = KT_LINK_PID;
+ /* port B is used as uart */
+ channel_count = 1;
+ /* Set GPIOL1 output high - route TMS and TDO through multiplexers */
+ aux_bits = 0x20;
+ pindir = 0x2b;
+ /* Set GPIOH4 output low - enable TMS output buffer */
+ /* Set GPIOH5 output low - enable TDI output buffer */
+ /* Set GPIOH6 output low - enable TCK output buffer */
+ pindir_high = 0x70;
} else {
msg_perr("Error: Invalid device type specified.\n");
free(arg);
@@ -295,7 +442,10 @@ int ft2232_spi_init(void)
}
free(arg);
- arg = extract_programmer_param("port");
+ /* Remember reserved pins before pindir gets modified. */
+ const uint8_t rsv_bits = pindir & 0xf0;
+
+ arg = extract_programmer_param_str(cfg, "port");
if (arg) {
switch (toupper((unsigned char)*arg)) {
case 'A':
@@ -328,7 +478,7 @@ int ft2232_spi_init(void)
}
free(arg);
- arg = extract_programmer_param("divisor");
+ arg = extract_programmer_param_str(cfg, "divisor");
if (arg && strlen(arg)) {
unsigned int temp = 0;
char *endptr;
@@ -343,27 +493,96 @@ int ft2232_spi_init(void)
}
free(arg);
- /* Allows setting multiple GPIOL states, for example: csgpiol=012 */
- arg = extract_programmer_param("csgpiol");
+ bool csgpiol_set = false;
+ arg = extract_programmer_param_str(cfg, "csgpiol");
if (arg) {
- unsigned int ngpios = strlen(arg);
- for (unsigned int i = 0; i <= ngpios; i++) {
- int temp = arg[i] - '0';
- if (ngpios == 0 || (ngpios != i && (temp < 0 || temp > 3))) {
- msg_perr("Error: Invalid GPIOLs specified: \"%s\".\n"
- "Valid values are numbers between 0 and 3. "
- "Multiple GPIOLs can be specified.\n", arg);
- free(arg);
- return -2;
- } else {
- unsigned int pin = temp + 4;
- cs_bits |= 1 << pin;
- pindir |= 1 << pin;
- }
+ csgpiol_set = true;
+ msg_pwarn("Deprecation warning: `csgpiol` is deprecated and will be removed "
+ "in the future.\nUse `gpiolX=C` instead.\n");
+
+ char *endptr;
+ unsigned int temp = strtoul(arg, &endptr, 10);
+ if (*endptr || endptr == arg || temp > 3) {
+ msg_perr("Error: Invalid GPIOL specified: \"%s\".\n"
+ "Valid values are between 0 and 3.\n", arg);
+ free(arg);
+ return -2;
}
+
+ unsigned int pin = temp + 4;
+ if (rsv_bits & 1 << pin) {
+ msg_perr("Error: Invalid GPIOL specified: \"%s\".\n"
+ "The pin is reserved on this programmer.\n",
+ arg);
+ free(arg);
+ return -2;
+ }
+
+ cs_bits |= 1 << pin;
+ pindir |= 1 << pin;
}
free(arg);
+ /* gpiolX */
+ for (int pin = 0; pin < 4; pin++) {
+ char gpiol_param[7];
+ snprintf(gpiol_param, sizeof(gpiol_param), "gpiol%d", pin);
+ arg = extract_programmer_param_str(cfg, gpiol_param);
+
+ if (!arg)
+ continue;
+
+ if (csgpiol_set) {
+ msg_perr("Error: `csgpiol` and `gpiolX` are mutually exclusive.\n"
+ "Since `csgpiol` is deprecated and will be removed in the "
+ "future, use of `gpiolX=C` is recommended.\n");
+ free(arg);
+ return -2;
+ }
+
+ uint8_t bit = 1 << (pin + 4);
+ if (rsv_bits & bit) {
+ msg_perr("Error: Invalid GPIOL specified: \"gpiol%d=%s\".\n"
+ "Pin GPIOL%i is reserved on this programmer.\n",
+ pin, arg, pin);
+ free(arg);
+ return -2;
+ }
+
+ if (strlen(arg) != 1)
+ goto format_error;
+
+ switch (toupper(arg[0])) {
+ case 'H':
+ aux_bits |= bit;
+ pindir |= bit;
+ break;
+ case 'L':
+ pindir |= bit;
+ break;
+ case 'C':
+ cs_bits |= bit;
+ pindir |= bit;
+ break;
+ default:
+ goto format_error;
+ }
+
+ free(arg);
+ continue;
+
+format_error:
+ msg_perr("Error: Invalid GPIOL specified: \"gpiol%d=%s\".\n"
+ "Valid values are H, L and C.\n"
+ " H - Set GPIOL output high\n"
+ " L - Set GPIOL output low\n"
+ " C - Use GPIOL as additional CS# output\n",
+ pin, arg);
+
+ free(arg);
+ return -2;
+ }
+
msg_pdbg("Using device type %s %s ",
get_ft2232_vendorname(ft2232_vid, ft2232_type),
get_ft2232_devicename(ft2232_vid, ft2232_type));
@@ -372,50 +591,50 @@ int ft2232_spi_init(void)
(ft2232_interface == INTERFACE_B) ? "B" :
(ft2232_interface == INTERFACE_C) ? "C" : "D");
- if (ftdi_init(ftdic) < 0) {
+ if (ftdi_init(&ftdic) < 0) {
msg_perr("ftdi_init failed.\n");
return -3;
}
- if (ftdi_set_interface(ftdic, ft2232_interface) < 0) {
- msg_perr("Unable to select channel (%s).\n", ftdi_get_error_string(ftdic));
+ if (ftdi_set_interface(&ftdic, ft2232_interface) < 0) {
+ msg_perr("Unable to select channel (%s).\n", ftdi_get_error_string(&ftdic));
}
- arg = extract_programmer_param("serial");
- f = ftdi_usb_open_desc(ftdic, ft2232_vid, ft2232_type, NULL, arg);
+ arg = extract_programmer_param_str(cfg, "serial");
+ arg2 = extract_programmer_param_str(cfg, "description");
+
+ f = ftdi_usb_open_desc(&ftdic, ft2232_vid, ft2232_type, arg2, arg);
+
free(arg);
+ free(arg2);
if (f < 0 && f != -5) {
msg_perr("Unable to open FTDI device: %d (%s)\n", f,
- ftdi_get_error_string(ftdic));
+ ftdi_get_error_string(&ftdic));
return -4;
}
- if (ftdic->type != TYPE_2232H && ftdic->type != TYPE_4232H && ftdic->type != TYPE_232H) {
- msg_pdbg("FTDI chip type %d is not high-speed.\n", ftdic->type);
- clock_5x = 0;
- }
-
- if (ftdi_usb_reset(ftdic) < 0) {
- msg_perr("Unable to reset FTDI device (%s).\n", ftdi_get_error_string(ftdic));
+ if (ftdic.type != TYPE_2232H && ftdic.type != TYPE_4232H && ftdic.type != TYPE_232H) {
+ msg_pdbg("FTDI chip type %d is not high-speed.\n", ftdic.type);
+ clock_5x = false;
}
- if (ftdi_set_latency_timer(ftdic, 2) < 0) {
- msg_perr("Unable to set latency timer (%s).\n", ftdi_get_error_string(ftdic));
+ if (ftdi_usb_reset(&ftdic) < 0) {
+ msg_perr("Unable to reset FTDI device (%s).\n", ftdi_get_error_string(&ftdic));
}
- if (ftdi_write_data_set_chunksize(ftdic, 270)) {
- msg_perr("Unable to set chunk size (%s).\n", ftdi_get_error_string(ftdic));
+ if (ftdi_set_latency_timer(&ftdic, 2) < 0) {
+ msg_perr("Unable to set latency timer (%s).\n", ftdi_get_error_string(&ftdic));
}
- if (ftdi_set_bitmode(ftdic, 0x00, BITMODE_BITBANG_SPI) < 0) {
- msg_perr("Unable to set bitmode to SPI (%s).\n", ftdi_get_error_string(ftdic));
+ if (ftdi_set_bitmode(&ftdic, 0x00, BITMODE_BITBANG_SPI) < 0) {
+ msg_perr("Unable to set bitmode to SPI (%s).\n", ftdi_get_error_string(&ftdic));
}
if (clock_5x) {
msg_pdbg("Disable divide-by-5 front stage\n");
buf[0] = DIS_DIV_5;
- if (send_buf(ftdic, buf, 1)) {
+ if (send_buf(&ftdic, buf, 1)) {
ret = -5;
goto ftdi_err;
}
@@ -428,7 +647,7 @@ int ft2232_spi_init(void)
buf[0] = TCK_DIVISOR;
buf[1] = (divisor / 2 - 1) & 0xff;
buf[2] = ((divisor / 2 - 1) >> 8) & 0xff;
- if (send_buf(ftdic, buf, 3)) {
+ if (send_buf(&ftdic, buf, 3)) {
ret = -6;
goto ftdi_err;
}
@@ -439,118 +658,54 @@ int ft2232_spi_init(void)
/* Disconnect TDI/DO to TDO/DI for loopback. */
msg_pdbg("No loopback of TDI/DO TDO/DI\n");
buf[0] = LOOPBACK_END;
- if (send_buf(ftdic, buf, 1)) {
+ if (send_buf(&ftdic, buf, 1)) {
ret = -7;
goto ftdi_err;
}
msg_pdbg("Set data bits\n");
buf[0] = SET_BITS_LOW;
- buf[1] = cs_bits;
+ buf[1] = cs_bits | aux_bits;
buf[2] = pindir;
- if (send_buf(ftdic, buf, 3)) {
+ if (send_buf(&ftdic, buf, 3)) {
ret = -8;
goto ftdi_err;
}
- register_spi_master(&spi_master_ft2232);
-
- return 0;
-
-ftdi_err:
- if ((f = ftdi_usb_close(ftdic)) < 0) {
- msg_perr("Unable to close FTDI device: %d (%s)\n", f,
- ftdi_get_error_string(ftdic));
- }
- return ret;
-}
-
-/* Returns 0 upon success, a negative number upon errors. */
-static int ft2232_spi_send_command(const struct flashctx *flash,
- unsigned int writecnt, unsigned int readcnt,
- const unsigned char *writearr,
- unsigned char *readarr)
-{
- struct ftdi_context *ftdic = &ftdic_context;
- static unsigned char *buf = NULL;
- /* failed is special. We use bitwise ops, but it is essentially bool. */
- int i = 0, ret = 0, failed = 0;
- size_t bufsize;
- static size_t oldbufsize = 0;
-
- if (writecnt > 65536 || readcnt > 65536)
- return SPI_INVALID_LENGTH;
-
- /* buf is not used for the response from the chip. */
- bufsize = max(writecnt + 9, 260 + 9);
- /* Never shrink. realloc() calls are expensive. */
- if (!buf || bufsize > oldbufsize) {
- buf = realloc(buf, bufsize);
- if (!buf) {
- msg_perr("Out of memory!\n");
- /* TODO: What to do with buf? */
- return SPI_GENERIC_ERROR;
+ if (pindir_high) {
+ msg_pdbg("Set data bits HighByte\n");
+ buf[0] = SET_BITS_HIGH;
+ buf[1] = aux_bits_high;
+ buf[2] = pindir_high;
+ if (send_buf(&ftdic, buf, 3)) {
+ ret = -8;
+ goto ftdi_err;
}
- oldbufsize = bufsize;
}
- /*
- * Minimize USB transfers by packing as many commands as possible
- * together. If we're not expecting to read, we can assert CS#, write,
- * and deassert CS# all in one shot. If reading, we do three separate
- * operations.
- */
- msg_pspew("Assert CS#\n");
- buf[i++] = SET_BITS_LOW;
- buf[i++] = ~ 0x08 & cs_bits; /* assert CS (3rd) bit only */
- buf[i++] = pindir;
-
- if (writecnt) {
- buf[i++] = MPSSE_DO_WRITE | MPSSE_WRITE_NEG;
- buf[i++] = (writecnt - 1) & 0xff;
- buf[i++] = ((writecnt - 1) >> 8) & 0xff;
- memcpy(buf + i, writearr, writecnt);
- i += writecnt;
+ spi_data = calloc(1, sizeof(*spi_data));
+ if (!spi_data) {
+ msg_perr("Unable to allocate space for SPI master data\n");
+ return SPI_GENERIC_ERROR;
}
+ spi_data->cs_bits = cs_bits;
+ spi_data->aux_bits = aux_bits;
+ spi_data->pindir = pindir;
+ spi_data->ftdic_context = ftdic;
- /*
- * Optionally terminate this batch of commands with a
- * read command, then do the fetch of the results.
- */
- if (readcnt) {
- buf[i++] = MPSSE_DO_READ;
- buf[i++] = (readcnt - 1) & 0xff;
- buf[i++] = ((readcnt - 1) >> 8) & 0xff;
- ret = send_buf(ftdic, buf, i);
- failed = ret;
- /* We can't abort here, we still have to deassert CS#. */
- if (ret)
- msg_perr("send_buf failed before read: %i\n", ret);
- i = 0;
- if (ret == 0) {
- /*
- * FIXME: This is unreliable. There's no guarantee that
- * we read the response directly after sending the read
- * command. We may be scheduled out etc.
- */
- ret = get_buf(ftdic, readarr, readcnt);
- failed |= ret;
- /* We can't abort here either. */
- if (ret)
- msg_perr("get_buf failed: %i\n", ret);
- }
- }
+ return register_spi_master(&spi_master_ft2232, spi_data);
- msg_pspew("De-assert CS#\n");
- buf[i++] = SET_BITS_LOW;
- buf[i++] = cs_bits;
- buf[i++] = pindir;
- ret = send_buf(ftdic, buf, i);
- failed |= ret;
- if (ret)
- msg_perr("send_buf failed at end: %i\n", ret);
-
- return failed ? -1 : 0;
+ftdi_err:
+ if ((f = ftdi_usb_close(&ftdic)) < 0) {
+ msg_perr("Unable to close FTDI device: %d (%s)\n", f,
+ ftdi_get_error_string(&ftdic));
+ }
+ return ret;
}
-#endif
+const struct programmer_entry programmer_ft2232_spi = {
+ .name = "ft2232_spi",
+ .type = USB,
+ .devs.dev = devs_ft2232spi,
+ .init = ft2232_spi_init,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-29 16:15:56 +0000