Marc Jones (marc.jones@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7255
-gerrit
commit 12b1a9b89fd53d0741b9a88c7513bca75c0b0dd2 Author: Furquan Shaikh furquan@google.com Date: Thu Apr 10 20:35:05 2014 -0700
ipq806x: Add support for GPIO operations
Basic support for ipq806x GPIO CFG and IO reg operations Reference: IPQ806x PRM, u-boot arch-ipq806x/gpio.* BUG=None BRANCH=None TEST=Compiled successfully
Change-Id: Ia0a9f288de3ac7bdb1cd4acbf44ba46af4dcc4e2 Reviewed-on: https://chromium-review.googlesource.com/194217 Tested-by: Furquan Shaikh furquan@chromium.org Reviewed-by: Vadim Bendebury vbendeb@chromium.org Commit-Queue: Furquan Shaikh furquan@chromium.org (cherry picked from commit 0b48e6655e63b467fe79d52149be01d23a2a3712) Signed-off-by: Marc Jones marc.jones@se-eng.com --- src/soc/qualcomm/ipq806x/Makefile.inc | 3 + src/soc/qualcomm/ipq806x/gpio.c | 123 +++++++++++++++++++++++++++---- src/soc/qualcomm/ipq806x/include/gpio.h | 44 +++++++++-- src/soc/qualcomm/ipq806x/include/iomap.h | 8 +- 4 files changed, 154 insertions(+), 24 deletions(-)
diff --git a/src/soc/qualcomm/ipq806x/Makefile.inc b/src/soc/qualcomm/ipq806x/Makefile.inc index 60d7d46..9ac5661 100644 --- a/src/soc/qualcomm/ipq806x/Makefile.inc +++ b/src/soc/qualcomm/ipq806x/Makefile.inc @@ -1,8 +1,11 @@ bootblock-y += cbfs.c +bootblock-y += gpio.c
romstage-y += cbfs.c +romstage-y += gpio.c
ramstage-y += cbfs.c +ramstage-y += gpio.c
ifeq ($(CONFIG_USE_BLOBS),y)
diff --git a/src/soc/qualcomm/ipq806x/gpio.c b/src/soc/qualcomm/ipq806x/gpio.c index 6e4140e..ac41e1a 100644 --- a/src/soc/qualcomm/ipq806x/gpio.c +++ b/src/soc/qualcomm/ipq806x/gpio.c @@ -28,16 +28,29 @@ * SUCH DAMAGE. */
-#include <asm/arch-ipq806x/iomap.h> -#include <asm/arch-ipq806x/gpio.h> -#include <asm/io.h> +#include <iomap.h> +#include <gpio.h> +#include <arch/io.h> + +/******************************************************* +Function description: check for invalid GPIO # +Arguments : +gpio_t gpio - Gpio number + +Return : GPIO Valid(0)/Invalid(1) +*******************************************************/ + +static inline int gpio_not_valid(gpio_t gpio) +{ + return (gpio > GPIO_MAX_NUM); +} +
/******************************************************* Function description: configure GPIO functinality Arguments : -unsigned int gpio - Gpio number +gpio_t gpio - Gpio number unsigned int func - Functionality number -unsigned int dir - direction 0- i/p, 1- o/p unsigned int pull - pull up/down, no pull range(0-3) unsigned int drvstr - range (0 - 7)-> (2- 16)MA steps of 2 unsigned int enable - 1 - Disable, 2- Enable. @@ -46,17 +59,101 @@ Return : None *******************************************************/
-void gpio_tlmm_config(unsigned int gpio, unsigned int func, - unsigned int dir, unsigned int pull, - unsigned int drvstr, unsigned int enable) +void gpio_tlmm_config_set(gpio_t gpio, unsigned int func, + unsigned int pull, unsigned int drvstr, + unsigned int enable) { unsigned int val = 0; - val |= pull; - val |= func << 2; - val |= drvstr << 6; - val |= enable << 9; + + if (gpio_not_valid(gpio)) + return; + + val |= (pull & GPIO_CFG_PULL_MASK) << GPIO_CFG_PULL_SHIFT; + val |= (func & GPIO_CFG_FUNC_MASK) << GPIO_CFG_FUNC_SHIFT; + val |= (drvstr & GPIO_CFG_DRV_MASK) << GPIO_CFG_DRV_SHIFT; + val |= (enable & GPIO_CFG_OE_MASK) << GPIO_CFG_OE_SHIFT; unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio); writel(val, addr); - return; }
+/******************************************************* +Function description: Get GPIO configuration +Arguments : +gpio_t gpio - Gpio number +unsigned int *func - Functionality number +unsigned int *pull - pull up/down, no pull range(0-3) +unsigned int *drvstr - range (0 - 7)-> (2- 16)MA steps of 2 +unsigned int *enable - 1 - Disable, 2- Enable. + +Return : None +*******************************************************/ + + +void gpio_tlmm_config_get(gpio_t gpio, unsigned int *func, + unsigned int *pull, unsigned int *drvstr, + unsigned int *enable) +{ + unsigned int val; + + if (gpio_not_valid(gpio)) + return; + + unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio); + val = readl(addr); + + *pull = (val >> GPIO_CFG_PULL_SHIFT) & GPIO_CFG_PULL_MASK; + *func = (val >> GPIO_CFG_FUNC_SHIFT) & GPIO_CFG_FUNC_MASK; + *drvstr = (val >> GPIO_CFG_DRV_SHIFT) & GPIO_CFG_DRV_MASK; + *enable = (val >> GPIO_CFG_OE_SHIFT) & GPIO_CFG_OE_MASK; +} + +/******************************************************* +Function description: configure GPIO IO functinality +Arguments : +gpio_t gpio - Gpio number +unsigned int out - Controls value of GPIO output + +Return : None +*******************************************************/ + +void gpio_io_config_set(gpio_t gpio, unsigned int out) +{ + unsigned int val; + + if (gpio_not_valid(gpio)) + return; + + unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio); + + val = readl(addr); + if (out) + val |= (1 << GPIO_IO_OUT_SHIFT); + else + val &= (~(1 << GPIO_IO_OUT_SHIFT)); + + writel(val,addr); +} + +/******************************************************* +Function description: get GPIO IO functinality details +Arguments : +gpio_t gpio - Gpio number +unsigned int *in - Value of GPIO input +unsigned int *out - Value of GPIO output + +Return : None +*******************************************************/ + +void gpio_io_config_get(gpio_t gpio, unsigned int *in, unsigned int *out) +{ + unsigned int val; + + if (gpio_not_valid(gpio)) + return; + + unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio); + + val = readl(addr); + *in = (val >> GPIO_IO_IN_SHIFT) & GPIO_IO_IN_MASK; + *out = (val >> GPIO_IO_OUT_SHIFT) & GPIO_IO_OUT_MASK; +} diff --git a/src/soc/qualcomm/ipq806x/include/gpio.h b/src/soc/qualcomm/ipq806x/include/gpio.h index e2b281e..678da0d 100644 --- a/src/soc/qualcomm/ipq806x/include/gpio.h +++ b/src/soc/qualcomm/ipq806x/include/gpio.h @@ -30,8 +30,10 @@ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
-#ifndef __PLATFORM_AKRONITE_GPIO_H_ -#define __PLATFORM_AKRONITE_GPIO_H_ +#ifndef __SOC_QUALCOMM_IPQ806X_GPIO_H_ +#define __SOC_QUALCOMM_IPQ806X_GPIO_H_ + +typedef unsigned int gpio_t;
/* GPIO TLMM: Direction */ #define GPIO_INPUT 0 @@ -57,7 +59,37 @@ #define GPIO_ENABLE 0 #define GPIO_DISABLE 1
-void gpio_tlmm_config(unsigned int gpio, unsigned int func, - unsigned int dir, unsigned int pull, - unsigned int drvstr, unsigned int enable); -#endif +/* GPIO MAX Valid # */ +#define GPIO_MAX_NUM 68 + +/* GPIO TLMM: Mask */ +#define GPIO_CFG_PULL_MASK 0x3 +#define GPIO_CFG_FUNC_MASK 0xF +#define GPIO_CFG_DRV_MASK 0x7 +#define GPIO_CFG_OE_MASK 0x1 + +/* GPIO TLMM: Shift */ +#define GPIO_CFG_PULL_SHIFT 0 +#define GPIO_CFG_FUNC_SHIFT 2 +#define GPIO_CFG_DRV_SHIFT 6 +#define GPIO_CFG_OE_SHIFT 9 + +/* GPIO IO: Mask */ +#define GPIO_IO_IN_MASK 0x1 +#define GPIO_IO_OUT_MASK 0x1 + +/* GPIO IO: Shift */ +#define GPIO_IO_IN_SHIFT 0 +#define GPIO_IO_OUT_SHIFT 1 + +void gpio_tlmm_config_set(gpio_t gpio, unsigned int func, + unsigned int pull, unsigned int drvstr, + unsigned int enable); + +void gpio_tlmm_config_get(gpio_t gpio, unsigned int *func, + unsigned int *pull, unsigned int *drvstr, + unsigned int *enable); + +void gpio_io_config_set(gpio_t gpio, unsigned int out); +void gpio_io_config_get(gpio_t gpio, unsigned int *in, unsigned int *out); +#endif // __SOC_QUALCOMM_IPQ806X_GPIO_H_ diff --git a/src/soc/qualcomm/ipq806x/include/iomap.h b/src/soc/qualcomm/ipq806x/include/iomap.h index a7066af..5fcfde9 100644 --- a/src/soc/qualcomm/ipq806x/include/iomap.h +++ b/src/soc/qualcomm/ipq806x/include/iomap.h @@ -33,10 +33,8 @@ * SUCH DAMAGE. */
-#ifndef _PLATFORM_MSM8960_IOMAP_H_ -#define _PLATFORM_MSM8960_IOMAP_H_ - -#include <configs/ipq806x_cdp.h> +#ifndef __SOC_QUALCOMM_IPQ806X_IOMAP_H_ +#define __SOC_QUALCOMM_IPQ806X_IOMAP_H_
/* Typecast to allow integers being passed as address This needs to be included because vendor code is not compliant with our @@ -96,4 +94,4 @@ #define UART2_DM_BASE 0x12490000 #define UART_GSBI2_BASE 0x12480000
-#endif +#endif // __SOC_QUALCOMM_IPQ806X_IOMAP_H_