From 0ea046d777bf567cfd89c7d968c0b962e3e7589b Mon Sep 17 00:00:00 2001 From: John Crispin <blogic@openwrt.org> Date: Wed, 11 Apr 2012 18:47:53 +0200 Subject: [PATCH 68/70] MIPS: lantiq: stp, fix for ase, add get, clock disabled Lantiq serial-to-parallel hardware gpio module Added gpio pins as used for amazon se (ase) Added get to enable reporting of gpio status Changed to use software update, as hw clock was not running on ase. Clock really only needed if hw flashing was implemented. Signed-off-by: Conor O'Gorman <i@conorogorman.net> --- arch/mips/lantiq/xway/gpio_stp.c | 22 +++++++++++++--------- 1 files changed, 13 insertions(+), 9 deletions(-) --- a/arch/mips/lantiq/xway/gpio_stp.c +++ b/arch/mips/lantiq/xway/gpio_stp.c @@ -27,6 +27,7 @@ #define LTQ_STP_AR 0x10 #define LTQ_STP_CON_SWU (1 << 31) +#define LTQ_STP_SWU_MASK (1 << 31) #define LTQ_STP_2HZ 0 #define LTQ_STP_4HZ (1 << 23) #define LTQ_STP_8HZ (2 << 23) @@ -60,6 +61,12 @@ static void ltq_stp_set(struct gpio_chip else ltq_stp_shadow &= ~(1 << offset); ltq_stp_w32(ltq_stp_shadow, LTQ_STP_CPU0); + ltq_stp_w32_mask(LTQ_STP_SWU_MASK, LTQ_STP_CON_SWU, LTQ_STP_CON0); +} + +static int ltq_stp_get(struct gpio_chip *chip, unsigned offset) +{ + return !!(ltq_stp_r32(LTQ_STP_CPU0) & (1<<offset)); } static int ltq_stp_direction_output(struct gpio_chip *chip, unsigned offset, @@ -74,6 +81,7 @@ static struct gpio_chip ltq_stp_chip = { .label = "ltq_stp", .direction_output = ltq_stp_direction_output, .set = ltq_stp_set, + .get = ltq_stp_get, .base = 200, .ngpio = 24, .owner = THIS_MODULE, @@ -97,12 +105,6 @@ static int ltq_stp_hw_init(struct device ltq_stp_w32_mask(0, LTQ_STP_GROUP0 | LTQ_STP_GROUP1 | LTQ_STP_GROUP2, LTQ_STP_CON1); - /* stp are update periodically by the FPI bus */ - ltq_stp_w32_mask(LTQ_STP_UPD_MASK, LTQ_STP_UPD_FPI, LTQ_STP_CON1); - - /* set stp update speed */ - ltq_stp_w32_mask(LTQ_STP_SPEED_MASK, LTQ_STP_8HZ, LTQ_STP_CON1); - /* tell the hardware that pin (led) 0 and 1 are controlled * by the dsl arc */ @@ -118,6 +120,7 @@ static int __devinit ltq_stp_probe(struc { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); int ret = 0; + int pin; if (!res) return -ENOENT; @@ -135,9 +138,10 @@ static int __devinit ltq_stp_probe(struc } /* the 3 pins used to control the external stp */ - if (ltq_gpio_request(&pdev->dev, 4, 2, 1, "stp-st") || - ltq_gpio_request(&pdev->dev, 5, 2, 1, "stp-d") || - ltq_gpio_request(&pdev->dev, 6, 2, 1, "stp-sh")) { + pin = ltq_is_ase() ? 1 : 4; + if (ltq_gpio_request(&pdev->dev, pin, 2, 1, "stp-st") || + ltq_gpio_request(&pdev->dev, pin+1, 2, 1, "stp-d") || + ltq_gpio_request(&pdev->dev, pin+2, 2, 1, "stp-sh")) { dev_err(&pdev->dev, "failed to request needed gpios\n"); return -EBUSY; }