Example #1
0
/*
 * Initialize port. This is called from early_console stuff
 * so we have to be careful here !
 */
static int cpm_uart_request_port(struct uart_port *port)
{
	struct uart_cpm_port *pinfo = (struct uart_cpm_port *)port;
	int ret;

	pr_debug("CPM uart[%d]:request port\n", port->line);

	if (pinfo->flags & FLAG_CONSOLE)
		return 0;

	if (IS_SMC(pinfo)) {
		pinfo->smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX);
		pinfo->smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
	} else {
		pinfo->sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX);
		pinfo->sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
	}

	ret = cpm_uart_allocbuf(pinfo, 0);

	if (ret)
		return ret;

	cpm_uart_initbd(pinfo);
	if (IS_SMC(pinfo))
		cpm_uart_init_smc(pinfo);
	else
		cpm_uart_init_scc(pinfo);

	return 0;
}
Example #2
0
/*
 * Setup console. Be careful is called early !
 */
static int __init cpm_uart_console_setup(struct console *co, char *options)
{
	struct uart_port *port;
	struct uart_cpm_port *pinfo;
	int baud = 38400;
	int bits = 8;
	int parity = 'n';
	int flow = 'n';
	int ret;

	port =
	    (struct uart_port *)&cpm_uart_ports[cpm_uart_port_map[co->index]];
	pinfo = (struct uart_cpm_port *)port;

	pinfo->flags |= FLAG_CONSOLE;

	if (options) {
		uart_parse_options(options, &baud, &parity, &bits, &flow);
	} else {
		bd_t *bd = (bd_t *) __res;

		if (bd->bi_baudrate)
			baud = bd->bi_baudrate;
		else
			baud = 9600;
	}

	/*
	 * Setup any port IO, connect any baud rate generators,
	 * etc.  This is expected to be handled by board
	 * dependant code
	 */
	if (pinfo->set_lineif)
		pinfo->set_lineif(pinfo);

	if (IS_SMC(pinfo)) {
		pinfo->smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX);
		pinfo->smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
	} else {
		pinfo->sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX);
		pinfo->sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
	}

	ret = cpm_uart_allocbuf(pinfo, 1);

	if (ret)
		return ret;

	cpm_uart_initbd(pinfo);

	if (IS_SMC(pinfo))
		cpm_uart_init_smc(pinfo);
	else
		cpm_uart_init_scc(pinfo);

	uart_set_options(port, co, baud, parity, bits, flow);

	return 0;
}
Example #3
0
int cpm_uart_early_setup(int index, int early)
{
	int ret;
	struct uart_port *port;
	struct uart_cpm_port *pinfo = &cpm_uart_ports[index];
	struct fs_uart_platform_info *pdata;
	struct platform_device* pdev = early_uart_get_pdev(index);
	int line = pinfo - cpm_uart_ports;

	BUG_ON(index>UART_NR);
	port =
		(struct uart_port *)&cpm_uart_ports[index];
	pinfo = (struct uart_cpm_port *)port;
	if (!pdev) {
		if (pinfo->set_lineif)
			pinfo->set_lineif(pinfo);
	} else {
		pdata = pdev->dev.platform_data;
		if (pdata)
			if (pdata->init_ioports)
    	                	pdata->init_ioports(pdata);

		cpm_uart_drv_get_platform_data(pdev, 1);
	}

	cpm_line_cr_cmd(line, CPM_CR_STOP_TX);

	if (IS_SMC(pinfo)) {
		pinfo->smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX);
		pinfo->smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
	} else {
		pinfo->sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX);
		pinfo->sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
	}
	ret = cpm_uart_allocbuf(pinfo, early);

	if (ret)
		return ret;

	cpm_uart_initbd(pinfo);

	if (IS_SMC(pinfo))
		cpm_uart_init_smc(pinfo);
	else
		cpm_uart_init_scc(pinfo);

	return 0;
}
Example #4
0
/*
 * Initialize port. This is called from early_console stuff
 * so we have to be careful here !
 */
static int cpm_uart_request_port(struct uart_port *port)
{
	struct uart_cpm_port *pinfo = (struct uart_cpm_port *)port;
	int ret;

	pr_debug("CPM uart[%d]:request port\n", port->line);

	if (pinfo->flags & FLAG_CONSOLE)
		return 0;

	/*
	 * Setup any port IO, connect any baud rate generators,
	 * etc.  This is expected to be handled by board
	 * dependant code
	 */
	if (pinfo->set_lineif)
		pinfo->set_lineif(pinfo);

	if (IS_SMC(pinfo)) {
		pinfo->smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX);
		pinfo->smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
	} else {
		pinfo->sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX);
		pinfo->sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
	}

	ret = cpm_uart_allocbuf(pinfo, 0);

	if (ret)
		return ret;

	cpm_uart_initbd(pinfo);
	if (IS_SMC(pinfo))
		cpm_uart_init_smc(pinfo);
	else
		cpm_uart_init_scc(pinfo);

	return 0;
}
Example #5
0
static int __init cpm_uart_console_setup(struct console *co, char *options)
{
	struct uart_port *port;
	struct uart_cpm_port *pinfo;
	int baud = 38400;
	int bits = 8;
	int parity = 'n';
	int flow = 'n';
	int ret;

	struct fs_uart_platform_info *pdata;
	struct platform_device* pdev = early_uart_get_pdev(co->index);

	if (!pdev) {
		pr_info("cpm_uart: console: compat mode\n");
		/* compatibility - will be cleaned up */
		cpm_uart_init_portdesc();
	}

	port =
	    (struct uart_port *)&cpm_uart_ports[cpm_uart_port_map[co->index]];
	pinfo = (struct uart_cpm_port *)port;
	if (!pdev) {
		if (pinfo->set_lineif)
			pinfo->set_lineif(pinfo);
	} else {
		pdata = pdev->dev.platform_data;
		if (pdata)
			if (pdata->init_ioports)
    	                	pdata->init_ioports(pdata);

		cpm_uart_drv_get_platform_data(pdev, 1);
	}

	pinfo->flags |= FLAG_CONSOLE;

	if (options) {
		uart_parse_options(options, &baud, &parity, &bits, &flow);
	} else {
		if ((baud = uart_baudrate()) == -1)
			baud = 9600;
	}

	if (IS_SMC(pinfo)) {
		pinfo->smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX);
		pinfo->smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
	} else {
		pinfo->sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX);
		pinfo->sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
	}

	ret = cpm_uart_allocbuf(pinfo, 1);

	if (ret)
		return ret;

	cpm_uart_initbd(pinfo);

	if (IS_SMC(pinfo))
		cpm_uart_init_smc(pinfo);
	else
		cpm_uart_init_scc(pinfo);

	uart_set_options(port, co, baud, parity, bits, flow);

	return 0;
}
Example #6
0
static int __init cpm_uart_console_setup(struct console *co, char *options)
{
	int baud = 38400;
	int bits = 8;
	int parity = 'n';
	int flow = 'n';
	int ret;
	struct uart_cpm_port *pinfo;
	struct uart_port *port;

	struct device_node *np = NULL;
	int i = 0;

	if (co->index >= UART_NR) {
		printk(KERN_ERR "cpm_uart: console index %d too high\n",
		       co->index);
		return -ENODEV;
	}

	do {
		np = of_find_node_by_type(np, "serial");
		if (!np)
			return -ENODEV;

		if (!of_device_is_compatible(np, "fsl,cpm1-smc-uart") &&
		    !of_device_is_compatible(np, "fsl,cpm1-scc-uart") &&
		    !of_device_is_compatible(np, "fsl,cpm2-smc-uart") &&
		    !of_device_is_compatible(np, "fsl,cpm2-scc-uart"))
			i--;
	} while (i++ != co->index);

	pinfo = &cpm_uart_ports[co->index];

	pinfo->flags |= FLAG_CONSOLE;
	port = &pinfo->port;

	ret = cpm_uart_init_port(np, pinfo);
	of_node_put(np);
	if (ret)
		return ret;

	if (options) {
		uart_parse_options(options, &baud, &parity, &bits, &flow);
	} else {
		if ((baud = uart_baudrate()) == -1)
			baud = 9600;
	}

#ifdef CONFIG_PPC_EARLY_DEBUG_CPM
	udbg_putc = NULL;
#endif

	if (IS_SMC(pinfo)) {
		out_be16(&pinfo->smcup->smc_brkcr, 0);
		cpm_line_cr_cmd(pinfo, CPM_CR_STOP_TX);
		clrbits8(&pinfo->smcp->smc_smcm, SMCM_RX | SMCM_TX);
		clrbits16(&pinfo->smcp->smc_smcmr, SMCMR_REN | SMCMR_TEN);
	} else {
		out_be16(&pinfo->sccup->scc_brkcr, 0);
		cpm_line_cr_cmd(pinfo, CPM_CR_GRA_STOP_TX);
		clrbits16(&pinfo->sccp->scc_sccm, UART_SCCM_TX | UART_SCCM_RX);
		clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
	}

	ret = cpm_uart_allocbuf(pinfo, 1);

	if (ret)
		return ret;

	cpm_uart_initbd(pinfo);

	if (IS_SMC(pinfo))
		cpm_uart_init_smc(pinfo);
	else
		cpm_uart_init_scc(pinfo);

	uart_set_options(port, co, baud, parity, bits, flow);
	cpm_line_cr_cmd(pinfo, CPM_CR_RESTART_TX);

	return 0;
}