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 Original-Change-Id: Ia0a9f288de3ac7bdb1cd4acbf44ba46af4dcc4e2 Original-Reviewed-on: https://chromium-review.googlesource.com/194217 Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> (cherry picked from commit 0b48e6655e63b467fe79d52149be01d23a2a3712) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I09e222f35b4b20c8eb901f33cf4451085c4c99cc Reviewed-on: http://review.coreboot.org/7266 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
Furquan Shaikh
Marc Jones
parent
d551e82beb
commit
9d91aba286
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@ -1,8 +1,11 @@
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bootblock-y += cbfs.c
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bootblock-y += gpio.c
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romstage-y += cbfs.c
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romstage-y += gpio.c
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ramstage-y += cbfs.c
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ramstage-y += gpio.c
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ifeq ($(CONFIG_USE_BLOBS),y)
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@ -27,4 +30,4 @@ $(objcbfs)/bootblock.bin: ./$(call strip_quotes,$(CONFIG_SBL_BLOB)) \
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endif
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INCLUDES += -Isrc/soc/qualcomm/ipq806x/include
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CPPFLAGS_common += -Isrc/soc/qualcomm/ipq806x/include
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@ -28,16 +28,29 @@
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* SUCH DAMAGE.
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*/
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#include <asm/arch-ipq806x/iomap.h>
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#include <asm/arch-ipq806x/gpio.h>
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#include <asm/io.h>
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#include <iomap.h>
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#include <gpio.h>
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#include <arch/io.h>
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/*******************************************************
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Function description: check for invalid GPIO #
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Arguments :
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gpio_t gpio - Gpio number
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Return : GPIO Valid(0)/Invalid(1)
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*******************************************************/
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static inline int gpio_not_valid(gpio_t gpio)
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{
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return (gpio > GPIO_MAX_NUM);
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}
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/*******************************************************
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Function description: configure GPIO functinality
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Arguments :
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unsigned int gpio - Gpio number
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gpio_t gpio - Gpio number
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unsigned int func - Functionality number
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unsigned int dir - direction 0- i/p, 1- o/p
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unsigned int pull - pull up/down, no pull range(0-3)
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unsigned int drvstr - range (0 - 7)-> (2- 16)MA steps of 2
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unsigned int enable - 1 - Disable, 2- Enable.
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@ -46,17 +59,101 @@ Return : None
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*******************************************************/
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void gpio_tlmm_config(unsigned int gpio, unsigned int func,
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unsigned int dir, unsigned int pull,
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unsigned int drvstr, unsigned int enable)
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void gpio_tlmm_config_set(gpio_t gpio, unsigned int func,
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unsigned int pull, unsigned int drvstr,
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unsigned int enable)
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{
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unsigned int val = 0;
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val |= pull;
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val |= func << 2;
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val |= drvstr << 6;
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val |= enable << 9;
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if (gpio_not_valid(gpio))
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return;
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val |= (pull & GPIO_CFG_PULL_MASK) << GPIO_CFG_PULL_SHIFT;
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val |= (func & GPIO_CFG_FUNC_MASK) << GPIO_CFG_FUNC_SHIFT;
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val |= (drvstr & GPIO_CFG_DRV_MASK) << GPIO_CFG_DRV_SHIFT;
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val |= (enable & GPIO_CFG_OE_MASK) << GPIO_CFG_OE_SHIFT;
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unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio);
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writel(val, addr);
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return;
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}
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/*******************************************************
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Function description: Get GPIO configuration
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Arguments :
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gpio_t gpio - Gpio number
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unsigned int *func - Functionality number
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unsigned int *pull - pull up/down, no pull range(0-3)
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unsigned int *drvstr - range (0 - 7)-> (2- 16)MA steps of 2
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unsigned int *enable - 1 - Disable, 2- Enable.
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Return : None
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*******************************************************/
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void gpio_tlmm_config_get(gpio_t gpio, unsigned int *func,
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unsigned int *pull, unsigned int *drvstr,
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unsigned int *enable)
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{
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unsigned int val;
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if (gpio_not_valid(gpio))
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return;
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unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio);
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val = readl(addr);
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*pull = (val >> GPIO_CFG_PULL_SHIFT) & GPIO_CFG_PULL_MASK;
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*func = (val >> GPIO_CFG_FUNC_SHIFT) & GPIO_CFG_FUNC_MASK;
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*drvstr = (val >> GPIO_CFG_DRV_SHIFT) & GPIO_CFG_DRV_MASK;
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*enable = (val >> GPIO_CFG_OE_SHIFT) & GPIO_CFG_OE_MASK;
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}
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/*******************************************************
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Function description: configure GPIO IO functinality
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Arguments :
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gpio_t gpio - Gpio number
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unsigned int out - Controls value of GPIO output
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Return : None
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*******************************************************/
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void gpio_io_config_set(gpio_t gpio, unsigned int out)
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{
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unsigned int val;
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if (gpio_not_valid(gpio))
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return;
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unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio);
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val = readl(addr);
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if (out)
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val |= (1 << GPIO_IO_OUT_SHIFT);
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else
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val &= (~(1 << GPIO_IO_OUT_SHIFT));
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writel(val,addr);
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}
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/*******************************************************
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Function description: get GPIO IO functinality details
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Arguments :
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gpio_t gpio - Gpio number
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unsigned int *in - Value of GPIO input
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unsigned int *out - Value of GPIO output
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Return : None
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*******************************************************/
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void gpio_io_config_get(gpio_t gpio, unsigned int *in, unsigned int *out)
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{
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unsigned int val;
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if (gpio_not_valid(gpio))
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return;
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unsigned int *addr = (unsigned int *)GPIO_CONFIG_ADDR(gpio);
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val = readl(addr);
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*in = (val >> GPIO_IO_IN_SHIFT) & GPIO_IO_IN_MASK;
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*out = (val >> GPIO_IO_OUT_SHIFT) & GPIO_IO_OUT_MASK;
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}
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@ -30,8 +30,10 @@
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __PLATFORM_AKRONITE_GPIO_H_
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#define __PLATFORM_AKRONITE_GPIO_H_
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#ifndef __SOC_QUALCOMM_IPQ806X_GPIO_H_
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#define __SOC_QUALCOMM_IPQ806X_GPIO_H_
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typedef unsigned int gpio_t;
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/* GPIO TLMM: Direction */
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#define GPIO_INPUT 0
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@ -57,7 +59,37 @@
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#define GPIO_ENABLE 0
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#define GPIO_DISABLE 1
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void gpio_tlmm_config(unsigned int gpio, unsigned int func,
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unsigned int dir, unsigned int pull,
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unsigned int drvstr, unsigned int enable);
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#endif
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/* GPIO MAX Valid # */
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#define GPIO_MAX_NUM 68
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/* GPIO TLMM: Mask */
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#define GPIO_CFG_PULL_MASK 0x3
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#define GPIO_CFG_FUNC_MASK 0xF
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#define GPIO_CFG_DRV_MASK 0x7
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#define GPIO_CFG_OE_MASK 0x1
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/* GPIO TLMM: Shift */
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#define GPIO_CFG_PULL_SHIFT 0
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#define GPIO_CFG_FUNC_SHIFT 2
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#define GPIO_CFG_DRV_SHIFT 6
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#define GPIO_CFG_OE_SHIFT 9
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/* GPIO IO: Mask */
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#define GPIO_IO_IN_MASK 0x1
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#define GPIO_IO_OUT_MASK 0x1
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/* GPIO IO: Shift */
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#define GPIO_IO_IN_SHIFT 0
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#define GPIO_IO_OUT_SHIFT 1
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void gpio_tlmm_config_set(gpio_t gpio, unsigned int func,
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unsigned int pull, unsigned int drvstr,
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unsigned int enable);
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void gpio_tlmm_config_get(gpio_t gpio, unsigned int *func,
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unsigned int *pull, unsigned int *drvstr,
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unsigned int *enable);
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void gpio_io_config_set(gpio_t gpio, unsigned int out);
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void gpio_io_config_get(gpio_t gpio, unsigned int *in, unsigned int *out);
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#endif // __SOC_QUALCOMM_IPQ806X_GPIO_H_
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@ -33,10 +33,8 @@
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* SUCH DAMAGE.
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*/
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#ifndef _PLATFORM_MSM8960_IOMAP_H_
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#define _PLATFORM_MSM8960_IOMAP_H_
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#include <configs/ipq806x_cdp.h>
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#ifndef __SOC_QUALCOMM_IPQ806X_IOMAP_H_
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#define __SOC_QUALCOMM_IPQ806X_IOMAP_H_
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/* Typecast to allow integers being passed as address
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This needs to be included because vendor code is not compliant with our
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@ -96,4 +94,4 @@
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#define UART2_DM_BASE 0x12490000
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#define UART_GSBI2_BASE 0x12480000
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#endif
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#endif // __SOC_QUALCOMM_IPQ806X_IOMAP_H_
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