drivers/imx_gpio: fix usage messages
[openocd.git] / src / jtag / drivers / imx_gpio.c
index f33d10976246f1352131df3d630ae653190cb620..8f172c26ceb9be1576f8cede84cf40f22747f99c 100644 (file)
@@ -82,9 +82,9 @@ static inline bool gpio_level(int g)
        return pio_base[g / 32].dr >> (g & 0x1F) & 1;
 }
 
-static int imx_gpio_read(void);
-static void imx_gpio_write(int tck, int tms, int tdi);
-static void imx_gpio_reset(int trst, int srst);
+static bb_value_t imx_gpio_read(void);
+static int imx_gpio_write(int tck, int tms, int tdi);
+static int imx_gpio_reset(int trst, int srst);
 
 static int imx_gpio_swdio_read(void);
 static void imx_gpio_swdio_drive(bool is_output);
@@ -128,12 +128,12 @@ static int speed_coeff = 50000;
 static int speed_offset = 100;
 static unsigned int jtag_delay;
 
-static int imx_gpio_read(void)
+static bb_value_t imx_gpio_read(void)
 {
-       return gpio_level(tdo_gpio);
+       return gpio_level(tdo_gpio) ? BB_HIGH : BB_LOW;
 }
 
-static void imx_gpio_write(int tck, int tms, int tdi)
+static int imx_gpio_write(int tck, int tms, int tdi)
 {
        tms ? gpio_set(tms_gpio) : gpio_clear(tms_gpio);
        tdi ? gpio_set(tdi_gpio) : gpio_clear(tdi_gpio);
@@ -141,25 +141,31 @@ static void imx_gpio_write(int tck, int tms, int tdi)
 
        for (unsigned int i = 0; i < jtag_delay; i++)
                asm volatile ("");
+
+       return ERROR_OK;
 }
 
-static void imx_gpio_swd_write(int tck, int tms, int tdi)
+static int imx_gpio_swd_write(int tck, int tms, int tdi)
 {
        tdi ? gpio_set(swdio_gpio) : gpio_clear(swdio_gpio);
        tck ? gpio_set(swclk_gpio) : gpio_clear(swclk_gpio);
 
        for (unsigned int i = 0; i < jtag_delay; i++)
                asm volatile ("");
+
+       return ERROR_OK;
 }
 
 /* (1) assert or (0) deassert reset lines */
-static void imx_gpio_reset(int trst, int srst)
+static int imx_gpio_reset(int trst, int srst)
 {
        if (trst_gpio != -1)
-               trst ? gpio_set(trst_gpio) : gpio_clear(trst_gpio);
+               trst ? gpio_clear(trst_gpio) : gpio_set(trst_gpio);
 
        if (srst_gpio != -1)
-               srst ? gpio_set(srst_gpio) : gpio_clear(srst_gpio);
+               srst ? gpio_clear(srst_gpio) : gpio_set(srst_gpio);
+
+       return ERROR_OK;
 }
 
 static void imx_gpio_swdio_drive(bool is_output)
@@ -316,6 +322,9 @@ COMMAND_HANDLER(imx_gpio_handle_speed_coeffs)
                COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], speed_coeff);
                COMMAND_PARSE_NUMBER(int, CMD_ARGV[1], speed_offset);
        }
+
+       command_print(CMD_CTX, "imx_gpio: speed_coeffs = %d, speed_offset = %d",
+                                 speed_coeff, speed_offset);
        return ERROR_OK;
 }
 
@@ -323,6 +332,9 @@ COMMAND_HANDLER(imx_gpio_handle_peripheral_base)
 {
        if (CMD_ARGC == 1)
                COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], imx_gpio_peri_base);
+
+       command_print(CMD_CTX, "imx_gpio: peripheral_base = 0x%08x",
+                                 imx_gpio_peri_base);
        return ERROR_OK;
 }
 
@@ -332,74 +344,84 @@ static const struct command_registration imx_gpio_command_handlers[] = {
                .handler = &imx_gpio_handle_jtag_gpionums,
                .mode = COMMAND_CONFIG,
                .help = "gpio numbers for tck, tms, tdi, tdo. (in that order)",
-               .usage = "(tck tms tdi tdo)* ",
+               .usage = "[tck tms tdi tdo]",
        },
        {
                .name = "imx_gpio_tck_num",
                .handler = &imx_gpio_handle_jtag_gpionum_tck,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for tck.",
+               .usage = "[tck]",
        },
        {
                .name = "imx_gpio_tms_num",
                .handler = &imx_gpio_handle_jtag_gpionum_tms,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for tms.",
+               .usage = "[tms]",
        },
        {
                .name = "imx_gpio_tdo_num",
                .handler = &imx_gpio_handle_jtag_gpionum_tdo,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for tdo.",
+               .usage = "[tdo]",
        },
        {
                .name = "imx_gpio_tdi_num",
                .handler = &imx_gpio_handle_jtag_gpionum_tdi,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for tdi.",
+               .usage = "[tdi]",
        },
        {
                .name = "imx_gpio_swd_nums",
                .handler = &imx_gpio_handle_swd_gpionums,
                .mode = COMMAND_CONFIG,
                .help = "gpio numbers for swclk, swdio. (in that order)",
-               .usage = "(swclk swdio)* ",
+               .usage = "[swclk swdio]",
        },
        {
                .name = "imx_gpio_swclk_num",
                .handler = &imx_gpio_handle_swd_gpionum_swclk,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for swclk.",
+               .usage = "[swclk]",
        },
        {
                .name = "imx_gpio_swdio_num",
                .handler = &imx_gpio_handle_swd_gpionum_swdio,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for swdio.",
+               .usage = "[swdio]",
        },
        {
                .name = "imx_gpio_srst_num",
                .handler = &imx_gpio_handle_jtag_gpionum_srst,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for srst.",
+               .usage = "[srst]",
        },
        {
                .name = "imx_gpio_trst_num",
                .handler = &imx_gpio_handle_jtag_gpionum_trst,
                .mode = COMMAND_CONFIG,
                .help = "gpio number for trst.",
+               .usage = "[trst]",
        },
        {
                .name = "imx_gpio_speed_coeffs",
                .handler = &imx_gpio_handle_speed_coeffs,
                .mode = COMMAND_CONFIG,
                .help = "SPEED_COEFF and SPEED_OFFSET for delay calculations.",
+               .usage = "[SPEED_COEFF SPEED_OFFSET]",
        },
        {
                .name = "imx_gpio_peripheral_base",
                .handler = &imx_gpio_handle_peripheral_base,
                .mode = COMMAND_CONFIG,
                .help = "peripheral base to access GPIOs (0x0209c000 for most IMX).",
+               .usage = "[base]",
        },
 
        COMMAND_REGISTRATION_DONE
@@ -469,7 +491,7 @@ static int imx_gpio_init(void)
 
 
        LOG_INFO("imx_gpio mmap: pagesize: %u, regionsize: %u",
-                       sysconf(_SC_PAGE_SIZE), IMX_GPIO_REGS_COUNT * IMX_GPIO_SIZE);
+                       (unsigned int) sysconf(_SC_PAGE_SIZE), IMX_GPIO_REGS_COUNT * IMX_GPIO_SIZE);
        pio_base = mmap(NULL, IMX_GPIO_REGS_COUNT * IMX_GPIO_SIZE,
                                PROT_READ | PROT_WRITE,
                                MAP_SHARED, dev_mem_fd, imx_gpio_peri_base);

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