Hi,
On Tue, May 22, 2012 at 11:12 PM, Chander Kashyap < chander.kashyap@linaro.org> wrote:
Hi,
On 4 May 2012 12:26, Rajeshwari Shinde rajeshwari.s@samsung.com wrote:
This patch performs the pinmux configuration in a common file. As of now only Exynos5 pinmux for SDMMC, UART and Ethernet is supported.
Signed-off-by: Abhilash Kesavan a.kesavan@samsung.com Signed-off-by: Che-Liang Chiou clchiou@chromium.org Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com
arch/arm/cpu/armv7/exynos/pinmux.c | 189
+++++++++++++++++++++++++++++
arch/arm/include/asm/arch-exynos/pinmux.h | 77 ++++++++++++ 2 files changed, 266 insertions(+), 0 deletions(-) create mode 100644 arch/arm/cpu/armv7/exynos/pinmux.c create mode 100644 arch/arm/include/asm/arch-exynos/pinmux.h
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c
b/arch/arm/cpu/armv7/exynos/pinmux.c
new file mode 100644 index 0000000..11f4b71 --- /dev/null +++ b/arch/arm/cpu/armv7/exynos/pinmux.c @@ -0,0 +1,189 @@ +/*
- Copyright (c) 2012 Samsung Electronics.
- Abhilash Kesavan a.kesavan@samsung.com
- See file CREDITS for list of people who contributed to this
- project.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- MA 02111-1307 USA
- */
+#include <common.h> +#include <asm/arch/cpu.h> +#include <asm/arch/gpio.h> +#include <asm/arch/pinmux.h> +#include <asm/arch/sromc.h>
+int exynos5_pinmux_config(int peripheral, int flags)
It should be static
It can't be static, as it is called from board files, drivers, etc.
+{
struct exynos5_gpio_part1 *gpio1 =(struct exynos5_gpio_part1 *)samsung_get_base_gpio_part1();
struct s5p_gpio_bank *bank, *bank_ext;int i, start, count;switch (peripheral) {case PERIPH_ID_UART0:case PERIPH_ID_UART1:case PERIPH_ID_UART2:case PERIPH_ID_UART3:switch (peripheral) {case PERIPH_ID_UART0:bank = &gpio1->a0;start = 0; count = 4;break;case PERIPH_ID_UART1:bank = &gpio1->a0;start = 4; count = 4;break;case PERIPH_ID_UART2:bank = &gpio1->a1;start = 0; count = 4;break;case PERIPH_ID_UART3:bank = &gpio1->a1;start = 4; count = 2;break;}for (i = start; i < start + count; i++) {s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));}break;case PERIPH_ID_SDMMC0:case PERIPH_ID_SDMMC1:case PERIPH_ID_SDMMC2:case PERIPH_ID_SDMMC3:switch (peripheral) {case PERIPH_ID_SDMMC0:bank = &gpio1->c0; bank_ext = &gpio1->c1;break;case PERIPH_ID_SDMMC1:bank = &gpio1->c1; bank_ext = NULL;break;case PERIPH_ID_SDMMC2:bank = &gpio1->c2; bank_ext = &gpio1->c3;break;case PERIPH_ID_SDMMC3:bank = &gpio1->c3; bank_ext = NULL;break;}if ((flags & PINMUX_FLAG_8BIT_MODE) && !bank_ext) {debug("SDMMC device %d does not support 8bitmode",
peripheral);return -1;}if (flags & PINMUX_FLAG_8BIT_MODE) {for (i = 3; i <= 6; i++) {s5p_gpio_cfg_pin(bank_ext, i,GPIO_FUNC(0x3));
s5p_gpio_set_pull(bank_ext, i,GPIO_PULL_UP);
s5p_gpio_set_drv(bank_ext, i,GPIO_DRV_4X);
}}for (i = 0; i < 2; i++) {s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);}for (i = 3; i <= 6; i++) {s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));s5p_gpio_set_pull(bank, i, GPIO_PULL_UP);s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);}break;case PERIPH_ID_SROMC:/** SROM:CS1 and EBI** GPY0[0] SROM_CSn[0]* GPY0[1] SROM_CSn[1](2)* GPY0[2] SROM_CSn[2]* GPY0[3] SROM_CSn[3]* GPY0[4] EBI_OEn(2)* GPY0[5] EBI_EEn(2)** GPY1[0] EBI_BEn[0](2)* GPY1[1] EBI_BEn[1](2)* GPY1[2] SROM_WAIT(2)* GPY1[3] EBI_DATA_RDn(2)*/s5p_gpio_cfg_pin(&gpio1->y0, (flags & PINMUX_FLAG_BANK),GPIO_FUNC(2));s5p_gpio_cfg_pin(&gpio1->y0, 4, GPIO_FUNC(2));s5p_gpio_cfg_pin(&gpio1->y0, 5, GPIO_FUNC(2));for (i = 0; i < 4; i++)s5p_gpio_cfg_pin(&gpio1->y1, i, GPIO_FUNC(2));/** EBI: 8 Addrss Lines** GPY3[0] EBI_ADDR[0](2)* GPY3[1] EBI_ADDR[1](2)* GPY3[2] EBI_ADDR[2](2)* GPY3[3] EBI_ADDR[3](2)* GPY3[4] EBI_ADDR[4](2)* GPY3[5] EBI_ADDR[5](2)* GPY3[6] EBI_ADDR[6](2)* GPY3[7] EBI_ADDR[7](2)** EBI: 16 Data Lines** GPY5[0] EBI_DATA[0](2)* GPY5[1] EBI_DATA[1](2)* GPY5[2] EBI_DATA[2](2)* GPY5[3] EBI_DATA[3](2)* GPY5[4] EBI_DATA[4](2)* GPY5[5] EBI_DATA[5](2)* GPY5[6] EBI_DATA[6](2)* GPY5[7] EBI_DATA[7](2)** GPY6[0] EBI_DATA[8](2)* GPY6[1] EBI_DATA[9](2)* GPY6[2] EBI_DATA[10](2)* GPY6[3] EBI_DATA[11](2)* GPY6[4] EBI_DATA[12](2)* GPY6[5] EBI_DATA[13](2)* GPY6[6] EBI_DATA[14](2)* GPY6[7] EBI_DATA[15](2)*/for (i = 0; i < 8; i++) {s5p_gpio_cfg_pin(&gpio1->y3, i, GPIO_FUNC(2));s5p_gpio_set_pull(&gpio1->y3, i, GPIO_PULL_UP);s5p_gpio_cfg_pin(&gpio1->y5, i, GPIO_FUNC(2));s5p_gpio_set_pull(&gpio1->y5, i, GPIO_PULL_UP);s5p_gpio_cfg_pin(&gpio1->y6, i, GPIO_FUNC(2));s5p_gpio_set_pull(&gpio1->y6, i, GPIO_PULL_UP);}break;default:debug("%s: invalid peripheral %d", __func__, peripheral);return -1;}return 0;+}
+int exynos_pinmux_config(int peripheral, int flags) +{
if (cpu_is_exynos5())return exynos5_pinmux_config(peripheral, flags);else{debug("pinmux functionality not supported\n");return -1;}+} diff --git a/arch/arm/include/asm/arch-exynos/pinmux.h
b/arch/arm/include/asm/arch-exynos/pinmux.h
new file mode 100644 index 0000000..306f521 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/pinmux.h @@ -0,0 +1,77 @@ +/*
- Copyright (C) 2012 Samsung Electronics
- Abhilash Kesavan a.kesavan@samsung.com
- See file CREDITS for list of people who contributed to this
- project.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- MA 02111-1307 USA
- */
+#ifndef __ASM_ARM_ARCH_PINMUX_H +#define __ASM_ARM_ARCH_PINMUX_H
+/*
- Peripherals requiring clock/pinmux configuration. List will
- grow with support for more devices getting added.
- */
+enum periph_id {
PERIPH_ID_SDMMC0,PERIPH_ID_SDMMC1,PERIPH_ID_SDMMC2,PERIPH_ID_SDMMC3,PERIPH_ID_SDMMC4,PERIPH_ID_SROMC,PERIPH_ID_UART0,PERIPH_ID_UART1,PERIPH_ID_UART2,PERIPH_ID_UART3,PERIPH_ID_COUNT,PERIPH_ID_NONE = -1,+};
+/*
- Flags for setting specific configarations of peripherals.
- List will grow with support for more devices getting added.
- */
+enum {
PINMUX_FLAG_NONE = 0x00000000,/* Flags for eMMC */PINMUX_FLAG_8BIT_MODE = 1 << 0, /* SDMMC 8-bit mode *//* Flags for SROM controller */PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */+};
+/**
- Configures the pinmux for a particular peripheral.
- Each gpio can be configured in many different ways (4 bits on exynos)
- such as "input", "output", "special function", "external interrupt"
- etc. This function will configure the peripheral pinmux along with
- pull-up/down and drive strength.
- @param peripheral peripheral to be configured
- @param flags configure flags
- @return 0 if ok, -1 on error (e.g. unsupported peripheral)
- */
+int exynos_pinmux_config(int peripheral, int flags);
+#endif
1.7.4.4
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-- with warm regards, Chander Kashyap _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Regards, Simon