Fix freerunner gsm modem pm.
SVN-Revision: 16609
This commit is contained in:
Lars-Peter Clausen
parent
8179904540
commit
b4066ae91a
2 changed files with 91 additions and 8 deletions
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@ -19,7 +19,6 @@
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/gta02-shadow.h>
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#include <mach/gpio.h>
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#include <asm/mach-types.h>
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@ -31,16 +30,36 @@
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#include <linux/mfd/pcf50633/gpio.h>
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#include <mach/regs-gpio.h>
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#include <mach/regs-gpioj.h>
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#include <linux/gta02-shadow.h>
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int gta_gsm_interrupts;
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EXPORT_SYMBOL(gta_gsm_interrupts);
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extern void s3c24xx_serial_console_set_silence(int);
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struct gta02pm_priv {
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int gpio_ndl_gsm;
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struct console *con;
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};
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static struct gta02pm_priv gta02_gsm;
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static struct console *find_s3c24xx_console(void)
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{
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struct console *con;
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acquire_console_sem();
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for (con = console_drivers; con; con = con->next) {
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if (!strcmp(con->name, "ttySAC"))
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break;
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}
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release_console_sem();
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return con;
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}
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static ssize_t gsm_read(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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@ -63,19 +82,30 @@ out_1:
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static void gsm_on_off(struct device *dev, int on)
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{
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if (!on) {
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/*
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* Do not drive into powered-down GSM side
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* GTA02 only, because on GTA01 maybe serial
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* is used otherwise.
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*/
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s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPIO_INPUT);
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s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPIO_INPUT);
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pcf50633_gpio_set(gta02_pcf, PCF50633_GPIO2, 0);
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if (gta02_gsm.con) {
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s3c24xx_serial_console_set_silence(0);
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console_start(gta02_gsm.con);
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dev_dbg(dev, "powered down gta02 GSM, enabling "
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"serial console\n");
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}
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return;
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}
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if (gta02_gsm.con) {
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dev_dbg(dev, "powering up GSM, thus "
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"disconnecting serial console\n");
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console_stop(gta02_gsm.con);
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s3c24xx_serial_console_set_silence(1);
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}
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/* allow UART to talk to GSM side now we will power it */
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s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0);
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s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPH2_TXD0);
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@ -84,6 +114,10 @@ static void gsm_on_off(struct device *dev, int on)
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msleep(100);
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gta02_gpb_setpin(GTA02_GPIO_MODEM_ON, 1);
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msleep(500);
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gta02_gpb_setpin(GTA02_GPIO_MODEM_ON, 0);
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/*
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* workaround for calypso firmware moko10 and earlier,
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* without this it will leave IRQ line high after
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@ -188,6 +222,11 @@ static int gta02_gsm_resume(struct platform_device *pdev)
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/* GPIO state is saved/restored by S3C2410 core GPIO driver, so we
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* don't need to do much here. */
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/* Make sure that the kernel console on the serial port is still
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* disabled. FIXME: resume ordering race with serial driver! */
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if (gta02_gsm.con && s3c2410_gpio_getpin(GTA02_GPIO_MODEM_ON))
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console_stop(gta02_gsm.con);
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s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, gta02_gsm.gpio_ndl_gsm);
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return 0;
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@ -222,13 +261,17 @@ static int __init gta02_gsm_probe(struct platform_device *pdev)
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case GTA02v6_SYSTEM_REV:
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break;
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default:
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/* TODO: fail */
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dev_warn(&pdev->dev, "Unknown Neo1973 Revision 0x%x, "
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dev_warn(&pdev->dev, "Unknown Freerunner Revision 0x%x, "
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"some PM features not available!!!\n",
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system_rev);
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break;
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}
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gta02_gsm.con = find_s3c24xx_console();
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if (!gta02_gsm.con)
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dev_warn(&pdev->dev,
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"cannot find S3C24xx console driver\n");
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/* note that download initially disabled, and enforce that */
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gta02_gsm.gpio_ndl_gsm = 1;
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s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1);
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40
target/linux/s3c24xx/patches-2.6.30/110-serial.patch
Normal file
40
target/linux/s3c24xx/patches-2.6.30/110-serial.patch
Normal file
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@ -0,0 +1,40 @@
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diff -urNX /opt/Projects/openmoko-linux-2.6/orig/dontdiff /opt/Projects/openmoko-linux-2.6/orig/linux-2.6.29-rc3/drivers/serial/samsung.c /opt/Projects/openmoko-linux-2.6/drivers/serial/samsung.c
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--- a/drivers/serial/samsung.c 2009-01-28 19:49:30.000000000 +0100
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+++ b/drivers/serial/samsung.c 2009-05-16 13:25:47.000000000 +0200
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@@ -1208,6 +1355,13 @@
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#ifdef CONFIG_SERIAL_SAMSUNG_CONSOLE
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static struct uart_port *cons_uart;
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+static int cons_silenced;
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+
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+void s3c24xx_serial_console_set_silence(int silenced)
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+{
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+ cons_silenced = silenced;
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+}
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+EXPORT_SYMBOL(s3c24xx_serial_console_set_silence);
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static int
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s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
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@@ -1232,9 +1386,21 @@
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s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
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{
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unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
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+ unsigned int umcon = rd_regl(cons_uart, S3C2410_UMCON);
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+
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+ if (cons_silenced)
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+ return;
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+
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+ /* If auto HW flow control enabled, temporarily turn it off */
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+ if (umcon & S3C2410_UMCOM_AFC)
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+ wr_regl(port, S3C2410_UMCON, (umcon & !S3C2410_UMCOM_AFC));
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+
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while (!s3c24xx_serial_console_txrdy(port, ufcon))
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barrier();
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wr_regb(cons_uart, S3C2410_UTXH, ch);
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+
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+ if (umcon & S3C2410_UMCOM_AFC)
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+ wr_regl(port, S3C2410_UMCON, umcon);
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}
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static void
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