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author | Mike Rapoport <mike@compulab.co.il> | 2010-11-15 11:48:33 +0200 |
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committer | Nicolas Pitre <nico@fluxnic.net> | 2010-12-15 10:32:30 -0500 |
commit | 5af244fdf2a2405b2181da2a32636f3ca5ef162e (patch) | |
tree | a4da14554797972718439a9a126102756454b783 /arch | |
parent | 8d4ce4cd7480ccd8412d4391d063733d6fc52f5c (diff) | |
download | linux-5af244fdf2a2405b2181da2a32636f3ca5ef162e.tar.gz linux-5af244fdf2a2405b2181da2a32636f3ca5ef162e.tar.bz2 linux-5af244fdf2a2405b2181da2a32636f3ca5ef162e.zip |
[ARM] Dove: add support for multi-purpose pins configuration
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-dove/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-dove/include/mach/dove.h | 8 | ||||
-rw-r--r-- | arch/arm/mach-dove/mpp.c | 212 | ||||
-rw-r--r-- | arch/arm/mach-dove/mpp.h | 220 |
4 files changed, 440 insertions, 2 deletions
diff --git a/arch/arm/mach-dove/Makefile b/arch/arm/mach-dove/Makefile index f74f5495425e..fa0f01856060 100644 --- a/arch/arm/mach-dove/Makefile +++ b/arch/arm/mach-dove/Makefile @@ -1,4 +1,4 @@ -obj-y += common.o addr-map.o irq.o pcie.o +obj-y += common.o addr-map.o irq.o pcie.o mpp.o obj-$(CONFIG_MACH_DOVE_DB) += dove-db-setup.o obj-$(CONFIG_MACH_CM_A510) += cm-a510.o diff --git a/arch/arm/mach-dove/include/mach/dove.h b/arch/arm/mach-dove/include/mach/dove.h index 148f4f0ee3e5..27b414578f2e 100644 --- a/arch/arm/mach-dove/include/mach/dove.h +++ b/arch/arm/mach-dove/include/mach/dove.h @@ -136,10 +136,16 @@ #define DOVE_AU1_SPDIFO_GPIO_EN (1 << 1) #define DOVE_NAND_GPIO_EN (1 << 0) #define DOVE_MPP_CTRL4_VIRT_BASE (DOVE_GPIO_VIRT_BASE + 0x40) - +#define DOVE_SPI_GPIO_SEL (1 << 5) +#define DOVE_UART1_GPIO_SEL (1 << 4) +#define DOVE_AU1_GPIO_SEL (1 << 3) +#define DOVE_CAM_GPIO_SEL (1 << 2) +#define DOVE_SD1_GPIO_SEL (1 << 1) +#define DOVE_SD0_GPIO_SEL (1 << 0) /* Power Management */ #define DOVE_PMU_VIRT_BASE (DOVE_SB_REGS_VIRT_BASE | 0xd0000) +#define DOVE_PMU_SIG_CTRL (DOVE_PMU_VIRT_BASE + 0x802c) /* Real Time Clock */ #define DOVE_RTC_PHYS_BASE (DOVE_SB_REGS_PHYS_BASE | 0xd8500) diff --git a/arch/arm/mach-dove/mpp.c b/arch/arm/mach-dove/mpp.c new file mode 100644 index 000000000000..71db2bdf2f28 --- /dev/null +++ b/arch/arm/mach-dove/mpp.c @@ -0,0 +1,212 @@ +/* + * arch/arm/mach-dove/mpp.c + * + * MPP functions for Marvell Dove SoCs + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/kernel.h> +#include <linux/gpio.h> +#include <linux/io.h> + +#include <mach/dove.h> + +#include "mpp.h" + +#define MPP_NR_REGS 4 +#define MPP_CTRL(i) ((i) == 3 ? \ + DOVE_MPP_CTRL4_VIRT_BASE : \ + DOVE_MPP_VIRT_BASE + (i) * 4) +#define PMU_SIG_REGS 2 +#define PMU_SIG_CTRL(i) (DOVE_PMU_SIG_CTRL + (i) * 4) + +struct dove_mpp_grp { + int start; + int end; +}; + +static struct dove_mpp_grp dove_mpp_grp[] = { + [MPP_24_39] = { + .start = 24, + .end = 39, + }, + [MPP_40_45] = { + .start = 40, + .end = 45, + }, + [MPP_46_51] = { + .start = 40, + .end = 45, + }, + [MPP_58_61] = { + .start = 58, + .end = 61, + }, + [MPP_62_63] = { + .start = 62, + .end = 63, + }, +}; + +static void dove_mpp_gpio_mode(int start, int end, int gpio_mode) +{ + int i; + + for (i = start; i <= end; i++) + orion_gpio_set_valid(i, gpio_mode); +} + +static void dove_mpp_dump_regs(void) +{ +#ifdef DEBUG + int i; + + pr_debug("MPP_CTRL regs:"); + for (i = 0; i < MPP_NR_REGS; i++) + printk(" %08x", readl(MPP_CTRL(i))); + printk("\n"); + + pr_debug("PMU_SIG_CTRL regs:"); + for (i = 0; i < PMU_SIG_REGS; i++) + printk(" %08x", readl(PMU_SIG_CTRL(i))); + printk("\n"); + + pr_debug("PMU_MPP_GENERAL_CTRL: %08x\n", readl(DOVE_PMU_MPP_GENERAL_CTRL)); + pr_debug("MPP_GENERAL: %08x\n", readl(DOVE_MPP_GENERAL_VIRT_BASE)); +#endif +} + +static void dove_mpp_cfg_nfc(int sel) +{ + u32 mpp_gen_cfg = readl(DOVE_MPP_GENERAL_VIRT_BASE); + + mpp_gen_cfg &= ~0x1; + mpp_gen_cfg |= sel; + writel(mpp_gen_cfg, DOVE_MPP_GENERAL_VIRT_BASE); + + dove_mpp_gpio_mode(64, 71, GPIO_OUTPUT_OK); +} + +static void dove_mpp_cfg_au1(int sel) +{ + u32 mpp_ctrl4 = readl(DOVE_MPP_CTRL4_VIRT_BASE); + u32 ssp_ctrl1 = readl(DOVE_SSP_CTRL_STATUS_1); + u32 mpp_gen_ctrl = readl(DOVE_MPP_GENERAL_VIRT_BASE); + u32 global_cfg_2 = readl(DOVE_GLOBAL_CONFIG_2); + + mpp_ctrl4 &= ~(DOVE_AU1_GPIO_SEL); + ssp_ctrl1 &= ~(DOVE_SSP_ON_AU1); + mpp_gen_ctrl &= ~(DOVE_AU1_SPDIFO_GPIO_EN); + global_cfg_2 &= ~(DOVE_TWSI_OPTION3_GPIO); + + if (!sel || sel == 0x2) + dove_mpp_gpio_mode(52, 57, 0); + else + dove_mpp_gpio_mode(52, 57, GPIO_OUTPUT_OK | GPIO_INPUT_OK); + + if (sel & 0x1) { + global_cfg_2 |= DOVE_TWSI_OPTION3_GPIO; + dove_mpp_gpio_mode(56, 57, 0); + } + if (sel & 0x2) { + mpp_gen_ctrl |= DOVE_AU1_SPDIFO_GPIO_EN; + dove_mpp_gpio_mode(57, 57, GPIO_OUTPUT_OK | GPIO_INPUT_OK); + } + if (sel & 0x4) { + ssp_ctrl1 |= DOVE_SSP_ON_AU1; + dove_mpp_gpio_mode(52, 55, 0); + } + if (sel & 0x8) + mpp_ctrl4 |= DOVE_AU1_GPIO_SEL; + + writel(mpp_ctrl4, DOVE_MPP_CTRL4_VIRT_BASE); + writel(ssp_ctrl1, DOVE_SSP_CTRL_STATUS_1); + writel(mpp_gen_ctrl, DOVE_MPP_GENERAL_VIRT_BASE); + writel(global_cfg_2, DOVE_GLOBAL_CONFIG_2); +} + +static void dove_mpp_conf_grp(int num, int sel, u32 *mpp_ctrl) +{ + int start = dove_mpp_grp[num].start; + int end = dove_mpp_grp[num].end; + int gpio_mode = sel ? GPIO_OUTPUT_OK | GPIO_INPUT_OK : 0; + + *mpp_ctrl &= ~(0x1 << num); + *mpp_ctrl |= sel << num; + + dove_mpp_gpio_mode(start, end, gpio_mode); +} + +void __init dove_mpp_conf(unsigned int *mpp_list) +{ + u32 mpp_ctrl[MPP_NR_REGS]; + u32 pmu_mpp_ctrl = 0; + u32 pmu_sig_ctrl[PMU_SIG_REGS]; + int i; + + /* Initialize gpiolib. */ + orion_gpio_init(); + + for (i = 0; i < MPP_NR_REGS; i++) + mpp_ctrl[i] = readl(MPP_CTRL(i)); + + for (i = 0; i < PMU_SIG_REGS; i++) + pmu_sig_ctrl[i] = readl(PMU_SIG_CTRL(i)); + + pmu_mpp_ctrl = readl(DOVE_PMU_MPP_GENERAL_CTRL); + + dove_mpp_dump_regs(); + + for ( ; *mpp_list != MPP_END; mpp_list++) { + unsigned int num = MPP_NUM(*mpp_list); + unsigned int sel = MPP_SEL(*mpp_list); + int shift, gpio_mode; + + if (num > MPP_MAX) { + pr_err("dove: invalid MPP number (%u)\n", num); + continue; + } + + if (*mpp_list & MPP_NFC_MASK) { + dove_mpp_cfg_nfc(sel); + continue; + } + + if (*mpp_list & MPP_AU1_MASK) { + dove_mpp_cfg_au1(sel); + continue; + } + + if (*mpp_list & MPP_GRP_MASK) { + dove_mpp_conf_grp(num, sel, &mpp_ctrl[3]); + continue; + } + + shift = (num & 7) << 2; + if (*mpp_list & MPP_PMU_MASK) { + pmu_mpp_ctrl |= (0x1 << num); + pmu_sig_ctrl[num / 8] &= ~(0xf << shift); + pmu_sig_ctrl[num / 8] |= 0xf << shift; + gpio_mode = 0; + } else { + mpp_ctrl[num / 8] &= ~(0xf << shift); + mpp_ctrl[num / 8] |= sel << shift; + gpio_mode = GPIO_OUTPUT_OK | GPIO_INPUT_OK; + } + + orion_gpio_set_valid(num, gpio_mode); + } + + for (i = 0; i < MPP_NR_REGS; i++) + writel(mpp_ctrl[i], MPP_CTRL(i)); + + for (i = 0; i < PMU_SIG_REGS; i++) + writel(pmu_sig_ctrl[i], PMU_SIG_CTRL(i)); + + writel(pmu_mpp_ctrl, DOVE_PMU_MPP_GENERAL_CTRL); + + dove_mpp_dump_regs(); +} diff --git a/arch/arm/mach-dove/mpp.h b/arch/arm/mach-dove/mpp.h new file mode 100644 index 000000000000..2a43ce413b15 --- /dev/null +++ b/arch/arm/mach-dove/mpp.h @@ -0,0 +1,220 @@ +#ifndef __ARCH_DOVE_MPP_CODED_H +#define __ARCH_DOVE_MPP_CODED_H + +#define MPP(_num, _mode, _pmu, _grp, _au1, _nfc) ( \ +/* MPP/group number */ ((_num) & 0xff) | \ +/* MPP select value */ (((_mode) & 0xf) << 8) | \ +/* MPP PMU */ ((!!(_pmu)) << 12) | \ +/* group flag */ ((!!(_grp)) << 13) | \ +/* AU1 flag */ ((!!(_au1)) << 14) | \ +/* NFCE flag */ ((!!(_nfc)) << 15)) + +#define MPP_MAX 71 + +#define MPP_NUM(x) ((x) & 0xff) +#define MPP_SEL(x) (((x) >> 8) & 0xf) + +#define MPP_PMU_MASK MPP(0, 0x0, 1, 0, 0, 0) +#define MPP_GRP_MASK MPP(0, 0x0, 0, 1, 0, 0) +#define MPP_AU1_MASK MPP(0, 0x0, 0, 0, 1, 0) +#define MPP_NFC_MASK MPP(0, 0x0, 0, 0, 0, 1) + +#define MPP_END MPP(0xff, 0xf, 1, 1, 1, 1) + +#define MPP_PMU_DRIVE_0 0x1 +#define MPP_PMU_DRIVE_1 0x2 +#define MPP_PMU_SDI 0x3 +#define MPP_PMU_CPU_PWRDWN 0x4 +#define MPP_PMU_STBY_PWRDWN 0x5 +#define MPP_PMU_CORE_PWR_GOOD 0x8 +#define MPP_PMU_BAT_FAULT 0xa +#define MPP_PMU_EXT0_WU 0xb +#define MPP_PMU_EXT1_WU 0xc +#define MPP_PMU_EXT2_WU 0xd +#define MPP_PMU_BLINK 0xe +#define MPP_PMU(_num, _mode) MPP((_num), MPP_PMU_##_mode, 1, 0, 0, 0) + +#define MPP_PIN(_num, _mode) MPP((_num), (_mode), 0, 0, 0, 0) +#define MPP_GRP(_grp, _mode) MPP((_grp), (_mode), 0, 1, 0, 0) +#define MPP_GRP_AU1(_mode) MPP(0, (_mode), 0, 0, 1, 0) +#define MPP_GRP_NFC(_mode) MPP(0, (_mode), 0, 0, 0, 1) + +#define MPP0_GPIO0 MPP_PIN(0, 0x0) +#define MPP0_UA2_RTSn MPP_PIN(0, 0x2) +#define MPP0_SDIO0_CD MPP_PIN(0, 0x3) +#define MPP0_LCD0_PWM MPP_PIN(0, 0xf) + +#define MPP1_GPIO1 MPP_PIN(1, 0x0) +#define MPP1_UA2_CTSn MPP_PIN(1, 0x2) +#define MPP1_SDIO0_WP MPP_PIN(1, 0x3) +#define MPP1_LCD1_PWM MPP_PIN(1, 0xf) + +#define MPP2_GPIO2 MPP_PIN(2, 0x0) +#define MPP2_SATA_PRESENT MPP_PIN(2, 0x1) +#define MPP2_UA2_TXD MPP_PIN(2, 0x2) +#define MPP2_SDIO0_BUS_POWER MPP_PIN(2, 0x3) +#define MPP2_UA_RTSn1 MPP_PIN(2, 0x4) + +#define MPP3_GPIO3 MPP_PIN(3, 0x0) +#define MPP3_SATA_ACT MPP_PIN(3, 0x1) +#define MPP3_UA2_RXD MPP_PIN(3, 0x2) +#define MPP3_SDIO0_LED_CTRL MPP_PIN(3, 0x3) +#define MPP3_UA_CTSn1 MPP_PIN(3, 0x4) +#define MPP3_SPI_LCD_CS1 MPP_PIN(3, 0xf) + +#define MPP4_GPIO4 MPP_PIN(4, 0x0) +#define MPP4_UA3_RTSn MPP_PIN(4, 0x2) +#define MPP4_SDIO1_CD MPP_PIN(4, 0x3) +#define MPP4_SPI_1_MISO MPP_PIN(4, 0x4) + +#define MPP5_GPIO5 MPP_PIN(5, 0x0) +#define MPP5_UA3_CTSn MPP_PIN(5, 0x2) +#define MPP5_SDIO1_WP MPP_PIN(5, 0x3) +#define MPP5_SPI_1_CS MPP_PIN(5, 0x4) + +#define MPP6_GPIO6 MPP_PIN(6, 0x0) +#define MPP6_UA3_TXD MPP_PIN(6, 0x2) +#define MPP6_SDIO1_BUS_POWER MPP_PIN(6, 0x3) +#define MPP6_SPI_1_MOSI MPP_PIN(6, 0x4) + +#define MPP7_GPIO7 MPP_PIN(7, 0x0) +#define MPP7_UA3_RXD MPP_PIN(7, 0x2) +#define MPP7_SDIO1_LED_CTRL MPP_PIN(7, 0x3) +#define MPP7_SPI_1_SCK MPP_PIN(7, 0x4) + +#define MPP8_GPIO8 MPP_PIN(8, 0x0) +#define MPP8_WD_RST_OUT MPP_PIN(8, 0x1) + +#define MPP9_GPIO9 MPP_PIN(9, 0x0) +#define MPP9_PEX1_CLKREQn MPP_PIN(9, 0x5) + +#define MPP10_GPIO10 MPP_PIN(10, 0x0) +#define MPP10_SSP_SCLK MPP_PIN(10, 0x5) + +#define MPP11_GPIO11 MPP_PIN(11, 0x0) +#define MPP11_SATA_PRESENT MPP_PIN(11, 0x1) +#define MPP11_SATA_ACT MPP_PIN(11, 0x2) +#define MPP11_SDIO0_LED_CTRL MPP_PIN(11, 0x3) +#define MPP11_SDIO1_LED_CTRL MPP_PIN(11, 0x4) +#define MPP11_PEX0_CLKREQn MPP_PIN(11, 0x5) + +#define MPP12_GPIO12 MPP_PIN(12, 0x0) +#define MPP12_SATA_ACT MPP_PIN(12, 0x1) +#define MPP12_UA2_RTSn MPP_PIN(12, 0x2) +#define MPP12_AD0_I2S_EXT_MCLK MPP_PIN(12, 0x3) +#define MPP12_SDIO1_CD MPP_PIN(12, 0x4) + +#define MPP13_GPIO13 MPP_PIN(13, 0x0) +#define MPP13_UA2_CTSn MPP_PIN(13, 0x2) +#define MPP13_AD1_I2S_EXT_MCLK MPP_PIN(13, 0x3) +#define MPP13_SDIO1WP MPP_PIN(13, 0x4) +#define MPP13_SSP_EXTCLK MPP_PIN(13, 0x5) + +#define MPP14_GPIO14 MPP_PIN(14, 0x0) +#define MPP14_UA2_TXD MPP_PIN(14, 0x2) +#define MPP14_SDIO1_BUS_POWER MPP_PIN(14, 0x4) +#define MPP14_SSP_RXD MPP_PIN(14, 0x5) + +#define MPP15_GPIO15 MPP_PIN(15, 0x0) +#define MPP15_UA2_RXD MPP_PIN(15, 0x2) +#define MPP15_SDIO1_LED_CTRL MPP_PIN(15, 0x4) +#define MPP15_SSP_SFRM MPP_PIN(15, 0x5) + +#define MPP16_GPIO16 MPP_PIN(16, 0x0) +#define MPP16_UA3_RTSn MPP_PIN(16, 0x2) +#define MPP16_SDIO0_CD MPP_PIN(16, 0x3) +#define MPP16_SPI_LCD_CS1 MPP_PIN(16, 0x4) +#define MPP16_AC97_SDATA_IN1 MPP_PIN(16, 0x5) + +#define MPP17_GPIO17 MPP_PIN(17, 0x0) +#define MPP17_AC97_SYSCLK_OUT MPP_PIN(17, 0x1) +#define MPP17_UA3_CTSn MPP_PIN(17, 0x2) +#define MPP17_SDIO0_WP MPP_PIN(17, 0x3) +#define MPP17_TW_SDA2 MPP_PIN(17, 0x4) +#define MPP17_AC97_SDATA_IN2 MPP_PIN(17, 0x5) + +#define MPP18_GPIO18 MPP_PIN(18, 0x0) +#define MPP18_UA3_TXD MPP_PIN(18, 0x2) +#define MPP18_SDIO0_BUS_POWER MPP_PIN(18, 0x3) +#define MPP18_LCD0_PWM MPP_PIN(18, 0x4) +#define MPP18_AC_SDATA_IN3 MPP_PIN(18, 0x5) + +#define MPP19_GPIO19 MPP_PIN(19, 0x0) +#define MPP19_UA3_RXD MPP_PIN(19, 0x2) +#define MPP19_SDIO0_LED_CTRL MPP_PIN(19, 0x3) +#define MPP19_TW_SCK2 MPP_PIN(19, 0x4) + +#define MPP20_GPIO20 MPP_PIN(20, 0x0) +#define MPP20_AC97_SYSCLK_OUT MPP_PIN(20, 0x1) +#define MPP20_SPI_LCD_MISO MPP_PIN(20, 0x2) +#define MPP20_SDIO1_CD MPP_PIN(20, 0x3) +#define MPP20_SDIO0_CD MPP_PIN(20, 0x5) +#define MPP20_SPI_1_MISO MPP_PIN(20, 0x6) + +#define MPP21_GPIO21 MPP_PIN(21, 0x0) +#define MPP21_UA1_RTSn MPP_PIN(21, 0x1) +#define MPP21_SPI_LCD_CS0 MPP_PIN(21, 0x2) +#define MPP21_SDIO1_WP MPP_PIN(21, 0x3) +#define MPP21_SSP_SFRM MPP_PIN(21, 0x4) +#define MPP21_SDIO0_WP MPP_PIN(21, 0x5) +#define MPP21_SPI_1_CS MPP_PIN(21, 0x6) + +#define MPP22_GPIO22 MPP_PIN(22, 0x0) +#define MPP22_UA1_CTSn MPP_PIN(22, 0x1) +#define MPP22_SPI_LCD_MOSI MPP_PIN(22, 0x2) +#define MPP22_SDIO1_BUS_POWER MPP_PIN(22, 0x3) +#define MPP22_SSP_TXD MPP_PIN(22, 0x4) +#define MPP22_SDIO0_BUS_POWER MPP_PIN(22, 0x5) +#define MPP22_SPI_1_MOSI MPP_PIN(22, 0x6) + +#define MPP23_GPIO23 MPP_PIN(23, 0x0) +#define MPP23_SPI_LCD_SCK MPP_PIN(23, 0x2) +#define MPP23_SDIO1_LED_CTRL MPP_PIN(23, 0x3) +#define MPP23_SSP_SCLK MPP_PIN(23, 0x4) +#define MPP23_SDIO0_LED_CTRL MPP_PIN(23, 0x5) +#define MPP23_SPI_1_SCK MPP_PIN(23, 0x6) + +/* for MPP groups _num is a group index */ +enum dove_mpp_grp_idx { + MPP_24_39 = 2, + MPP_40_45 = 0, + MPP_46_51 = 1, + MPP_58_61 = 5, + MPP_62_63 = 4, +}; + +#define MPP24_39_GPIO MPP_GRP(MPP_24_39, 0x1) +#define MPP24_39_CAM MPP_GRP(MPP_24_39, 0x0) + +#define MPP40_45_GPIO MPP_GRP(MPP_40_45, 0x1) +#define MPP40_45_SD0 MPP_GRP(MPP_40_45, 0x0) + +#define MPP46_51_GPIO MPP_GRP(MPP_46_51, 0x1) +#define MPP46_51_SD1 MPP_GRP(MPP_46_51, 0x0) + +#define MPP58_61_GPIO MPP_GRP(MPP_58_61, 0x1) +#define MPP58_61_SPI MPP_GRP(MPP_58_61, 0x0) + +#define MPP62_63_GPIO MPP_GRP(MPP_62_63, 0x1) +#define MPP62_63_UA1 MPP_GRP(MPP_62_63, 0x0) + +/* The MPP[64:71] control differs from other groups */ +#define MPP64_71_GPO MPP_GRP_NFC(0x1) +#define MPP64_71_NFC MPP_GRP_NFC(0x0) + +/* + * The MPP[52:57] functionality is encoded by 4 bits in different + * registers. The _num field in this case encodes those bits in + * correspodence with Table 135 of 88AP510 Functional specification + */ +#define MPP52_57_AU1 MPP_GRP_AU1(0x0) +#define MPP52_57_AU1_GPIO57 MPP_GRP_AU1(0x2) +#define MPP52_57_GPIO MPP_GRP_AU1(0xa) +#define MPP52_57_TW_GPIO MPP_GRP_AU1(0xb) +#define MPP52_57_AU1_SSP MPP_GRP_AU1(0xc) +#define MPP52_57_SSP_GPIO MPP_GRP_AU1(0xe) +#define MPP52_57_SSP_TW MPP_GRP_AU1(0xf) + +void dove_mpp_conf(unsigned int *mpp_list); + +#endif /* __ARCH_DOVE_MPP_CODED_H */ |