diff options
Diffstat (limited to 'arch/arm/mach-tegra/pinmux.c')
| -rw-r--r-- | arch/arm/mach-tegra/pinmux.c | 945 |
1 files changed, 945 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/pinmux.c b/arch/arm/mach-tegra/pinmux.c new file mode 100644 index 000000000000..13ae10237e84 --- /dev/null +++ b/arch/arm/mach-tegra/pinmux.c @@ -0,0 +1,945 @@ +/* + * linux/arch/arm/mach-tegra/pinmux.c + * + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ + + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/spinlock.h> +#include <linux/io.h> + +#include <mach/iomap.h> +#include <mach/pinmux.h> + + +#define TEGRA_TRI_STATE(x) (0x14 + (4 * (x))) +#define TEGRA_PP_MUX_CTL(x) (0x80 + (4 * (x))) +#define TEGRA_PP_PU_PD(x) (0xa0 + (4 * (x))) + +#define REG_A 0 +#define REG_B 1 +#define REG_C 2 +#define REG_D 3 +#define REG_E 4 +#define REG_F 5 +#define REG_G 6 + +#define REG_N -1 + +#define HSM_EN(reg) (((reg) >> 2) & 0x1) +#define SCHMT_EN(reg) (((reg) >> 3) & 0x1) +#define LPMD(reg) (((reg) >> 4) & 0x3) +#define DRVDN(reg) (((reg) >> 12) & 0x1f) +#define DRVUP(reg) (((reg) >> 20) & 0x1f) +#define SLWR(reg) (((reg) >> 28) & 0x3) +#define SLWF(reg) (((reg) >> 30) & 0x3) + +struct tegra_pingroup_desc { + const char *name; + int funcs[4]; + s8 tri_reg; /* offset into the TRISTATE_REG_* register bank */ + s8 tri_bit; /* offset into the TRISTATE_REG_* register bit */ + s8 mux_reg; /* offset into the PIN_MUX_CTL_* register bank */ + s8 mux_bit; /* offset into the PIN_MUX_CTL_* register bit */ + s8 pupd_reg; /* offset into the PULL_UPDOWN_REG_* register bank */ + s8 pupd_bit; /* offset into the PULL_UPDOWN_REG_* register bit */ +}; + +#define PINGROUP(pg_name, f0, f1, f2, f3, \ + tri_r, tri_b, mux_r, mux_b, pupd_r, pupd_b) \ + [TEGRA_PINGROUP_ ## pg_name] = { \ + .name = #pg_name, \ + .funcs = { \ + TEGRA_MUX_ ## f0, \ + TEGRA_MUX_ ## f1, \ + TEGRA_MUX_ ## f2, \ + TEGRA_MUX_ ## f3, \ + }, \ + .tri_reg = REG_ ## tri_r, \ + .tri_bit = tri_b, \ + .mux_reg = REG_ ## mux_r, \ + .mux_bit = mux_b, \ + .pupd_reg = REG_ ## pupd_r, \ + .pupd_bit = pupd_b, \ + } + +static const struct tegra_pingroup_desc pingroups[TEGRA_MAX_PINGROUP] = { + PINGROUP(ATA, IDE, NAND, GMI, RSVD, A, 0, A, 24, A, 0), + PINGROUP(ATB, IDE, NAND, GMI, SDIO4, A, 1, A, 16, A, 2), + PINGROUP(ATC, IDE, NAND, GMI, SDIO4, A, 2, A, 22, A, 4), + PINGROUP(ATD, IDE, NAND, GMI, SDIO4, A, 3, A, 20, A, 6), + PINGROUP(ATE, IDE, NAND, GMI, RSVD, B, 25, A, 12, A, 8), + PINGROUP(CDEV1, OSC, PLLA_OUT, PLLM_OUT1, AUDIO_SYNC, A, 4, C, 2, C, 0), + PINGROUP(CDEV2, OSC, AHB_CLK, APB_CLK, PLLP_OUT4, A, 5, C, 4, C, 2), + PINGROUP(CRTP, CRT, RSVD, RSVD, RSVD, D, 14, G, 20, B, 24), + PINGROUP(CSUS, PLLC_OUT1, PLLP_OUT2, PLLP_OUT3, VI_SENSOR_CLK, A, 6, C, 6, D, 24), + PINGROUP(DAP1, DAP1, RSVD, GMI, SDIO2, A, 7, C, 20, A, 10), + PINGROUP(DAP2, DAP2, TWC, RSVD, GMI, A, 8, C, 22, A, 12), + PINGROUP(DAP3, DAP3, RSVD, RSVD, RSVD, A, 9, C, 24, A, 14), + PINGROUP(DAP4, DAP4, RSVD, GMI, RSVD, A, 10, C, 26, A, 16), + PINGROUP(DDC, I2C2, RSVD, RSVD, RSVD, B, 31, C, 0, E, 28), + PINGROUP(DTA, RSVD, SDIO2, VI, RSVD, A, 11, B, 20, A, 18), + PINGROUP(DTB, RSVD, RSVD, VI, SPI1, A, 12, B, 22, A, 20), + PINGROUP(DTC, RSVD, RSVD, VI, RSVD, A, 13, B, 26, A, 22), + PINGROUP(DTD, RSVD, SDIO2, VI, RSVD, A, 14, B, 28, A, 24), + PINGROUP(DTE, RSVD, RSVD, VI, SPI1, A, 15, B, 30, A, 26), + PINGROUP(DTF, I2C3, RSVD, VI, RSVD, D, 12, G, 30, A, 28), + PINGROUP(GMA, UARTE, SPI3, GMI, SDIO4, A, 28, B, 0, E, 20), + PINGROUP(GMB, IDE, NAND, GMI, GMI_INT, B, 29, C, 28, E, 22), + PINGROUP(GMC, UARTD, SPI4, GMI, SFLASH, A, 29, B, 2, E, 24), + PINGROUP(GMD, RSVD, NAND, GMI, SFLASH, B, 30, C, 30, E, 26), + PINGROUP(GME, RSVD, DAP5, GMI, SDIO4, B, 0, D, 0, C, 24), + PINGROUP(GPU, PWM, UARTA, GMI, RSVD, A, 16, D, 4, B, 20), + PINGROUP(GPU7, RTCK, RSVD, RSVD, RSVD, D, 11, G, 28, B, 6), + PINGROUP(GPV, PCIE, RSVD, RSVD, RSVD, A, 17, D, 2, A, 30), + PINGROUP(HDINT, HDMI, RSVD, RSVD, RSVD, C, 23, B, 4, D, 22), + PINGROUP(I2CP, I2C, RSVD, RSVD, RSVD, A, 18, C, 8, B, 2), + PINGROUP(IRRX, UARTA, UARTB, GMI, SPI4, A, 20, C, 18, C, 22), + PINGROUP(IRTX, UARTA, UARTB, GMI, SPI4, A, 19, C, 16, C, 20), + PINGROUP(KBCA, KBC, NAND, SDIO2, EMC_TEST0_DLL, A, 22, C, 10, B, 8), + PINGROUP(KBCB, KBC, NAND, SDIO2, MIO, A, 21, C, 12, B, 10), + PINGROUP(KBCC, KBC, NAND, TRACE, EMC_TEST1_DLL, B, 26, C, 14, B, 12), + PINGROUP(KBCD, KBC, NAND, SDIO2, MIO, D, 10, G, 26, B, 14), + PINGROUP(KBCE, KBC, NAND, OWR, RSVD, A, 26, A, 28, E, 2), + PINGROUP(KBCF, KBC, NAND, TRACE, MIO, A, 27, A, 26, E, 0), + PINGROUP(LCSN, DISPLAYA, DISPLAYB, SPI3, RSVD, C, 31, E, 12, D, 20), + PINGROUP(LD0, DISPLAYA, DISPLAYB, XIO, RSVD, C, 0, F, 0, D, 12), + PINGROUP(LD1, DISPLAYA, DISPLAYB, XIO, RSVD, C, 1, F, 2, D, 12), + PINGROUP(LD10, DISPLAYA, DISPLAYB, XIO, RSVD, C, 10, F, 20, D, 12), + PINGROUP(LD11, DISPLAYA, DISPLAYB, XIO, RSVD, C, 11, F, 22, D, 12), + PINGROUP(LD12, DISPLAYA, DISPLAYB, XIO, RSVD, C, 12, F, 24, D, 12), + PINGROUP(LD13, DISPLAYA, DISPLAYB, XIO, RSVD, C, 13, F, 26, D, 12), + PINGROUP(LD14, DISPLAYA, DISPLAYB, XIO, RSVD, C, 14, F, 28, D, 12), + PINGROUP(LD15, DISPLAYA, DISPLAYB, XIO, RSVD, C, 15, F, 30, D, 12), + PINGROUP(LD16, DISPLAYA, DISPLAYB, XIO, RSVD, C, 16, G, 0, D, 12), + PINGROUP(LD17, DISPLAYA, DISPLAYB, RSVD, RSVD, C, 17, G, 2, D, 12), + PINGROUP(LD2, DISPLAYA, DISPLAYB, XIO, RSVD, C, 2, F, 4, D, 12), + PINGROUP(LD3, DISPLAYA, DISPLAYB, XIO, RSVD, C, 3, F, 6, D, 12), + PINGROUP(LD4, DISPLAYA, DISPLAYB, XIO, RSVD, C, 4, F, 8, D, 12), + PINGROUP(LD5, DISPLAYA, DISPLAYB, XIO, RSVD, C, 5, F, 10, D, 12), + PINGROUP(LD6, DISPLAYA, DISPLAYB, XIO, RSVD, C, 6, F, 12, D, 12), + PINGROUP(LD7, DISPLAYA, DISPLAYB, XIO, RSVD, C, 7, F, 14, D, 12), + PINGROUP(LD8, DISPLAYA, DISPLAYB, XIO, RSVD, C, 8, F, 16, D, 12), + PINGROUP(LD9, DISPLAYA, DISPLAYB, XIO, RSVD, C, 9, F, 18, D, 12), + PINGROUP(LDC, DISPLAYA, DISPLAYB, RSVD, RSVD, C, 30, E, 14, D, 20), + PINGROUP(LDI, DISPLAYA, DISPLAYB, RSVD, RSVD, D, 6, G, 16, D, 18), + PINGROUP(LHP0, DISPLAYA, DISPLAYB, RSVD, RSVD, C, 18, G, 10, D, 16), + PINGROUP(LHP1, DISPLAYA, DISPLAYB, RSVD, RSVD, C, 19, G, 4, D, 14), + PINGROUP(LHP2, DISPLAYA, DISPLAYB, RSVD, RSVD, C, 20, G, 6, D, 14), + PINGROUP(LHS, DISPLAYA, DISPLAYB, XIO, RSVD, D, 7, E, 22, D, 22), + PINGROUP(LM0, DISPLAYA, DISPLAYB, SPI3, RSVD, C, 24, E, 26, D, 22), + PINGROUP(LM1, DISPLAYA, DISPLAYB, RSVD, CRT, C, 25, E, 28, D, 22), + PINGROUP(LPP, DISPLAYA, DISPLAYB, RSVD, RSVD, D, 8, G, 14, D, 18), + PINGROUP(LPW0, DISPLAYA, DISPLAYB, SPI3, HDMI, D, 3, E, 0, D, 20), + PINGROUP(LPW1, DISPLAYA, DISPLAYB, RSVD, RSVD, D, 4, E, 2, D, 20), + PINGROUP(LPW2, DISPLAYA, DISPLAYB, SPI3, HDMI, D, 5, E, 4, D, 20), + PINGROUP(LSC0, DISPLAYA, DISPLAYB, XIO, RSVD, C, 27, E, 18, D, 22), + PINGROUP(LSC1, DISPLAYA, DISPLAYB, SPI3, HDMI, C, 28, E, 20, D, 20), + PINGROUP(LSCK, DISPLAYA, DISPLAYB, SPI3, HDMI, C, 29, E, 16, D, 20), + PINGROUP(LSDA, DISPLAYA, DISPLAYB, SPI3, HDMI, D, 1, E, 8, D, 20), + PINGROUP(LSDI, DISPLAYA, DISPLAYB, SPI3, RSVD, D, 2, E, 6, D, 20), + PINGROUP(LSPI, DISPLAYA, DISPLAYB, XIO, HDMI, D, 0, E, 10, D, 22), + PINGROUP(LVP0, DISPLAYA, DISPLAYB, RSVD, RSVD, C, 21, E, 30, D, 22), + PINGROUP(LVP1, DISPLAYA, DISPLAYB, RSVD, RSVD, C, 22, G, 8, D, 16), + PINGROUP(LVS, DISPLAYA, DISPLAYB, XIO, RSVD, C, 26, E, 24, D, 22), + PINGROUP(OWC, OWR, RSVD, RSVD, RSVD, A, 31, B, 8, E, 30), + PINGROUP(PMC, PWR_ON, PWR_INTR, RSVD, RSVD, A, 23, G, 18, N, -1), + PINGROUP(PTA, I2C2, HDMI, GMI, RSVD, A, 24, G, 22, B, 4), + PINGROUP(RM, I2C, RSVD, RSVD, RSVD, A, 25, A, 14, B, 0), + PINGROUP(SDB, UARTA, PWM, SDIO3, SPI2, D, 15, D, 10, N, -1), + PINGROUP(SDC, PWM, TWC, SDIO3, SPI3, B, 1, D, 12, D, 28), + PINGROUP(SDD, UARTA, PWM, SDIO3, SPI3, B, 2, D, 14, D, 30), + PINGROUP(SDIO1, SDIO1, RSVD, UARTE, UARTA, A, 30, A, 30, E, 18), + PINGROUP(SLXA, PCIE, SPI4, SDIO3, SPI2, B, 3, B, 6, B, 22), + PINGROUP(SLXC, SPDIF, SPI4, SDIO3, SPI2, B, 5, B, 10, B, 26), + PINGROUP(SLXD, SPDIF, SPI4, SDIO3, SPI2, B, 6, B, 12, B, 28), + PINGROUP(SLXK, PCIE, SPI4, SDIO3, SPI2, B, 7, B, 14, B, 30), + PINGROUP(SPDI, SPDIF, RSVD, I2C, SDIO2, B, 8, D, 8, B, 16), + PINGROUP(SPDO, SPDIF, RSVD, I2C, SDIO2, B, 9, D, 6, B, 18), + PINGROUP(SPIA, SPI1, SPI2, SPI3, GMI, B, 10, D, 30, C, 4), + PINGROUP(SPIB, SPI1, SPI2, SPI3, GMI, B, 11, D, 28, C, 6), + PINGROUP(SPIC, SPI1, SPI2, SPI3, GMI, B, 12, D, 26, C, 8), + PINGROUP(SPID, SPI2, SPI1, SPI2_ALT, GMI, B, 13, D, 24, C, 10), + PINGROUP(SPIE, SPI2, SPI1, SPI2_ALT, GMI, B, 14, D, 22, C, 12), + PINGROUP(SPIF, SPI3, SPI1, SPI2, RSVD, B, 15, D, 20, C, 14), + PINGROUP(SPIG, SPI3, SPI2, SPI2_ALT, I2C, B, 16, D, 18, C, 16), + PINGROUP(SPIH, SPI3, SPI2, SPI2_ALT, I2C, B, 17, D, 16, C, 18), + PINGROUP(UAA, SPI3, MIPI_HS, UARTA, ULPI, B, 18, A, 0, D, 0), + PINGROUP(UAB, SPI2, MIPI_HS, UARTA, ULPI, B, 19, A, 2, D, 2), + PINGROUP(UAC, OWR, RSVD, RSVD, RSVD, B, 20, A, 4, D, 4), + PINGROUP(UAD, IRDA, SPDIF, UARTA, SPI4, B, 21, A, 6, D, 6), + PINGROUP(UCA, UARTC, RSVD, GMI, RSVD, B, 22, B, 16, D, 8), + PINGROUP(UCB, UARTC, PWM, GMI, RSVD, B, 23, B, 18, D, 10), + PINGROUP(UDA, SPI1, RSVD, UARTD, ULPI, D, 13, A, 8, E, 16), + /* these pin groups only have pullup and pull down control */ + PINGROUP(CK32, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, E, 14), + PINGROUP(DDRC, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, D, 26), + PINGROUP(PMCA, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, E, 4), + PINGROUP(PMCB, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, E, 6), + PINGROUP(PMCC, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, E, 8), + PINGROUP(PMCD, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, E, 10), + PINGROUP(PMCE, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, E, 12), + PINGROUP(XM2C, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, C, 30), + PINGROUP(XM2D, RSVD, RSVD, RSVD, RSVD, N, -1, N, -1, C, 28), +}; + +static char *tegra_mux_names[TEGRA_MAX_MUX] = { + [TEGRA_MUX_AHB_CLK] = "AHB_CLK", + [TEGRA_MUX_APB_CLK] = "APB_CLK", + [TEGRA_MUX_AUDIO_SYNC] = "AUDIO_SYNC", + [TEGRA_MUX_CRT] = "CRT", + [TEGRA_MUX_DAP1] = "DAP1", + [TEGRA_MUX_DAP2] = "DAP2", + [TEGRA_MUX_DAP3] = "DAP3", + [TEGRA_MUX_DAP4] = "DAP4", + [TEGRA_MUX_DAP5] = "DAP5", + [TEGRA_MUX_DISPLAYA] = "DISPLAYA", + [TEGRA_MUX_DISPLAYB] = "DISPLAYB", + [TEGRA_MUX_EMC_TEST0_DLL] = "EMC_TEST0_DLL", + [TEGRA_MUX_EMC_TEST1_DLL] = "EMC_TEST1_DLL", + [TEGRA_MUX_GMI] = "GMI", + [TEGRA_MUX_GMI_INT] = "GMI_INT", + [TEGRA_MUX_HDMI] = "HDMI", + [TEGRA_MUX_I2C] = "I2C", + [TEGRA_MUX_I2C2] = "I2C2", + [TEGRA_MUX_I2C3] = "I2C3", + [TEGRA_MUX_IDE] = "IDE", + [TEGRA_MUX_IRDA] = "IRDA", + [TEGRA_MUX_KBC] = "KBC", + [TEGRA_MUX_MIO] = "MIO", + [TEGRA_MUX_MIPI_HS] = "MIPI_HS", + [TEGRA_MUX_NAND] = "NAND", + [TEGRA_MUX_OSC] = "OSC", + [TEGRA_MUX_OWR] = "OWR", + [TEGRA_MUX_PCIE] = "PCIE", + [TEGRA_MUX_PLLA_OUT] = "PLLA_OUT", + [TEGRA_MUX_PLLC_OUT1] = "PLLC_OUT1", + [TEGRA_MUX_PLLM_OUT1] = "PLLM_OUT1", + [TEGRA_MUX_PLLP_OUT2] = "PLLP_OUT2", + [TEGRA_MUX_PLLP_OUT3] = "PLLP_OUT3", + [TEGRA_MUX_PLLP_OUT4] = "PLLP_OUT4", + [TEGRA_MUX_PWM] = "PWM", + [TEGRA_MUX_PWR_INTR] = "PWR_INTR", + [TEGRA_MUX_PWR_ON] = "PWR_ON", + [TEGRA_MUX_RTCK] = "RTCK", + [TEGRA_MUX_SDIO1] = "SDIO1", + [TEGRA_MUX_SDIO2] = "SDIO2", + [TEGRA_MUX_SDIO3] = "SDIO3", + [TEGRA_MUX_SDIO4] = "SDIO4", + [TEGRA_MUX_SFLASH] = "SFLASH", + [TEGRA_MUX_SPDIF] = "SPDIF", + [TEGRA_MUX_SPI1] = "SPI1", + [TEGRA_MUX_SPI2] = "SPI2", + [TEGRA_MUX_SPI2_ALT] = "SPI2_ALT", + [TEGRA_MUX_SPI3] = "SPI3", + [TEGRA_MUX_SPI4] = "SPI4", + [TEGRA_MUX_TRACE] = "TRACE", + [TEGRA_MUX_TWC] = "TWC", + [TEGRA_MUX_UARTA] = "UARTA", + [TEGRA_MUX_UARTB] = "UARTB", + [TEGRA_MUX_UARTC] = "UARTC", + [TEGRA_MUX_UARTD] = "UARTD", + [TEGRA_MUX_UARTE] = "UARTE", + [TEGRA_MUX_ULPI] = "ULPI", + [TEGRA_MUX_VI] = "VI", + [TEGRA_MUX_VI_SENSOR_CLK] = "VI_SENSOR_CLK", + [TEGRA_MUX_XIO] = "XIO", +}; + +struct tegra_drive_pingroup_desc { + const char *name; + s16 reg; +}; + +#define DRIVE_PINGROUP(pg_name, r) \ + [TEGRA_DRIVE_PINGROUP_ ## pg_name] = { \ + .name = #pg_name, \ + .reg = r \ + } + +static const struct tegra_drive_pingroup_desc drive_pingroups[TEGRA_MAX_PINGROUP] = { + DRIVE_PINGROUP(AO1, 0x868), + DRIVE_PINGROUP(AO2, 0x86c), + DRIVE_PINGROUP(AT1, 0x870), + DRIVE_PINGROUP(AT2, 0x874), + DRIVE_PINGROUP(CDEV1, 0x878), + DRIVE_PINGROUP(CDEV2, 0x87c), + DRIVE_PINGROUP(CSUS, 0x880), + DRIVE_PINGROUP(DAP1, 0x884), + DRIVE_PINGROUP(DAP2, 0x888), + DRIVE_PINGROUP(DAP3, 0x88c), + DRIVE_PINGROUP(DAP4, 0x890), + DRIVE_PINGROUP(DBG, 0x894), + DRIVE_PINGROUP(LCD1, 0x898), + DRIVE_PINGROUP(LCD2, 0x89c), + DRIVE_PINGROUP(SDMMC2, 0x8a0), + DRIVE_PINGROUP(SDMMC3, 0x8a4), + DRIVE_PINGROUP(SPI, 0x8a8), + DRIVE_PINGROUP(UAA, 0x8ac), + DRIVE_PINGROUP(UAB, 0x8b0), + DRIVE_PINGROUP(UART2, 0x8b4), + DRIVE_PINGROUP(UART3, 0x8b8), + DRIVE_PINGROUP(VI1, 0x8bc), + DRIVE_PINGROUP(VI2, 0x8c0), + DRIVE_PINGROUP(XM2A, 0x8c4), + DRIVE_PINGROUP(XM2C, 0x8c8), + DRIVE_PINGROUP(XM2D, 0x8cc), + DRIVE_PINGROUP(XM2CLK, 0x8d0), + DRIVE_PINGROUP(MEMCOMP, 0x8d4), +}; + +static const char *tegra_drive_names[TEGRA_MAX_DRIVE] = { + [TEGRA_DRIVE_DIV_8] = "DIV_8", + [TEGRA_DRIVE_DIV_4] = "DIV_4", + [TEGRA_DRIVE_DIV_2] = "DIV_2", + [TEGRA_DRIVE_DIV_1] = "DIV_1", +}; + +static const char *tegra_slew_names[TEGRA_MAX_SLEW] = { + [TEGRA_SLEW_FASTEST] = "FASTEST", + [TEGRA_SLEW_FAST] = "FAST", + [TEGRA_SLEW_SLOW] = "SLOW", + [TEGRA_SLEW_SLOWEST] = "SLOWEST", +}; + +static DEFINE_SPINLOCK(mux_lock); + +static const char *pingroup_name(enum tegra_pingroup pg) +{ + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return "<UNKNOWN>"; + + return pingroups[pg].name; +} + +static const char *func_name(enum tegra_mux_func func) +{ + if (func == TEGRA_MUX_RSVD1) + return "RSVD1"; + + if (func == TEGRA_MUX_RSVD2) + return "RSVD2"; + + if (func == TEGRA_MUX_RSVD3) + return "RSVD3"; + + if (func == TEGRA_MUX_RSVD4) + return "RSVD4"; + + if (func == TEGRA_MUX_NONE) + return "NONE"; + + if (func < 0 || func >= TEGRA_MAX_MUX) + return "<UNKNOWN>"; + + return tegra_mux_names[func]; +} + + +static const char *tri_name(unsigned long val) +{ + return val ? "TRISTATE" : "NORMAL"; +} + +static const char *pupd_name(unsigned long val) +{ + switch (val) { + case 0: + return "NORMAL"; + + case 1: + return "PULL_DOWN"; + + case 2: + return "PULL_UP"; + + default: + return "RSVD"; + } +} + + +static inline unsigned long pg_readl(unsigned long offset) +{ + return readl(IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset)); +} + +static inline void pg_writel(unsigned long value, unsigned long offset) +{ + writel(value, IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset)); +} + +int tegra_pinmux_set_func(enum tegra_pingroup pg, enum tegra_mux_func func) +{ + int mux = -1; + int i; + unsigned long reg; + unsigned long flags; + + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return -ERANGE; + + if (pingroups[pg].mux_reg == REG_N) + return -EINVAL; + + if (func < 0) + return -ERANGE; + + if (func & TEGRA_MUX_RSVD) { + mux = func & 0x3; + } else { + for (i = 0; i < 4; i++) { + if (pingroups[pg].funcs[i] == func) { + mux = i; + break; + } + } + } + + if (mux < 0) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(TEGRA_PP_MUX_CTL(pingroups[pg].mux_reg)); + reg &= ~(0x3 << pingroups[pg].mux_bit); + reg |= mux << pingroups[pg].mux_bit; + pg_writel(reg, TEGRA_PP_MUX_CTL(pingroups[pg].mux_reg)); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +int tegra_pinmux_set_tristate(enum tegra_pingroup pg, + enum tegra_tristate tristate) +{ + unsigned long reg; + unsigned long flags; + + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return -ERANGE; + + if (pingroups[pg].tri_reg == REG_N) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(TEGRA_TRI_STATE(pingroups[pg].tri_reg)); + reg &= ~(0x1 << pingroups[pg].tri_bit); + if (tristate) + reg |= 1 << pingroups[pg].tri_bit; + pg_writel(reg, TEGRA_TRI_STATE(pingroups[pg].tri_reg)); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +int tegra_pinmux_set_pullupdown(enum tegra_pingroup pg, + enum tegra_pullupdown pupd) +{ + unsigned long reg; + unsigned long flags; + + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return -ERANGE; + + if (pingroups[pg].pupd_reg == REG_N) + return -EINVAL; + + if (pupd != TEGRA_PUPD_NORMAL && + pupd != TEGRA_PUPD_PULL_DOWN && + pupd != TEGRA_PUPD_PULL_UP) + return -EINVAL; + + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(TEGRA_PP_PU_PD(pingroups[pg].pupd_reg)); + reg &= ~(0x3 << pingroups[pg].pupd_bit); + reg |= pupd << pingroups[pg].pupd_bit; + pg_writel(reg, TEGRA_PP_PU_PD(pingroups[pg].pupd_reg)); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +void tegra_pinmux_config_pingroup(enum tegra_pingroup pingroup, + enum tegra_mux_func func, + enum tegra_pullupdown pupd, + enum tegra_tristate tristate) +{ + int err; + + if (pingroups[pingroup].mux_reg != REG_N) { + err = tegra_pinmux_set_func(pingroup, func); + if (err < 0) + pr_err("pinmux: can't set pingroup %s func to %s: %d\n", + pingroup_name(pingroup), func_name(func), err); + } + + if (pingroups[pingroup].pupd_reg != REG_N) { + err = tegra_pinmux_set_pullupdown(pingroup, pupd); + if (err < 0) + pr_err("pinmux: can't set pingroup %s pullupdown to %s: %d\n", + pingroup_name(pingroup), pupd_name(pupd), err); + } + + if (pingroups[pingroup].tri_reg != REG_N) { + err = tegra_pinmux_set_tristate(pingroup, tristate); + if (err < 0) + pr_err("pinmux: can't set pingroup %s tristate to %s: %d\n", + pingroup_name(pingroup), tri_name(func), err); + } +} + + + +void tegra_pinmux_config_table(struct tegra_pingroup_config *config, int len) +{ + int i; + + for (i = 0; i < len; i++) + tegra_pinmux_config_pingroup(config[i].pingroup, + config[i].func, + config[i].pupd, + config[i].tristate); +} + +static const char *drive_pinmux_name(enum tegra_drive_pingroup pg) +{ + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return "<UNKNOWN>"; + + return drive_pingroups[pg].name; +} + +static const char *enable_name(unsigned long val) +{ + return val ? "ENABLE" : "DISABLE"; +} + +static const char *drive_name(unsigned long val) +{ + if (val >= TEGRA_MAX_DRIVE) + return "<UNKNOWN>"; + + return tegra_drive_names[val]; +} + +static const char *slew_name(unsigned long val) +{ + if (val >= TEGRA_MAX_SLEW) + return "<UNKNOWN>"; + + return tegra_slew_names[val]; +} + +static int tegra_drive_pinmux_set_hsm(enum tegra_drive_pingroup pg, + enum tegra_hsm hsm) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (hsm != TEGRA_HSM_ENABLE && hsm != TEGRA_HSM_DISABLE) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + if (hsm == TEGRA_HSM_ENABLE) + reg |= (1 << 2); + else + reg &= ~(1 << 2); + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_schmitt(enum tegra_drive_pingroup pg, + enum tegra_schmitt schmitt) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (schmitt != TEGRA_SCHMITT_ENABLE && schmitt != TEGRA_SCHMITT_DISABLE) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + if (schmitt == TEGRA_SCHMITT_ENABLE) + reg |= (1 << 3); + else + reg &= ~(1 << 3); + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_drive(enum tegra_drive_pingroup pg, + enum tegra_drive drive) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (drive < 0 || drive >= TEGRA_MAX_DRIVE) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x3 << 4); + reg |= drive << 4; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_pull_down(enum tegra_drive_pingroup pg, + enum tegra_pull_strength pull_down) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (pull_down < 0 || pull_down >= TEGRA_MAX_PULL) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x1f << 12); + reg |= pull_down << 12; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_pull_up(enum tegra_drive_pingroup pg, + enum tegra_pull_strength pull_up) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (pull_up < 0 || pull_up >= TEGRA_MAX_PULL) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x1f << 12); + reg |= pull_up << 12; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_slew_rising(enum tegra_drive_pingroup pg, + enum tegra_slew slew_rising) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (slew_rising < 0 || slew_rising >= TEGRA_MAX_SLEW) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x3 << 28); + reg |= slew_rising << 28; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_slew_falling(enum tegra_drive_pingroup pg, + enum tegra_slew slew_falling) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (slew_falling < 0 || slew_falling >= TEGRA_MAX_SLEW) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x3 << 30); + reg |= slew_falling << 30; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static void tegra_drive_pinmux_config_pingroup(enum tegra_drive_pingroup pingroup, + enum tegra_hsm hsm, + enum tegra_schmitt schmitt, + enum tegra_drive drive, + enum tegra_pull_strength pull_down, + enum tegra_pull_strength pull_up, + enum tegra_slew slew_rising, + enum tegra_slew slew_falling) +{ + int err; + + err = tegra_drive_pinmux_set_hsm(pingroup, hsm); + if (err < 0) + pr_err("pinmux: can't set pingroup %s hsm to %s: %d\n", + drive_pinmux_name(pingroup), + enable_name(hsm), err); + + err = tegra_drive_pinmux_set_schmitt(pingroup, schmitt); + if (err < 0) + pr_err("pinmux: can't set pingroup %s schmitt to %s: %d\n", + drive_pinmux_name(pingroup), + enable_name(schmitt), err); + + err = tegra_drive_pinmux_set_drive(pingroup, drive); + if (err < 0) + pr_err("pinmux: can't set pingroup %s drive to %s: %d\n", + drive_pinmux_name(pingroup), + drive_name(drive), err); + + err = tegra_drive_pinmux_set_pull_down(pingroup, pull_down); + if (err < 0) + pr_err("pinmux: can't set pingroup %s pull down to %d: %d\n", + drive_pinmux_name(pingroup), + pull_down, err); + + err = tegra_drive_pinmux_set_pull_up(pingroup, pull_up); + if (err < 0) + pr_err("pinmux: can't set pingroup %s pull up to %d: %d\n", + drive_pinmux_name(pingroup), + pull_up, err); + + err = tegra_drive_pinmux_set_slew_rising(pingroup, slew_rising); + if (err < 0) + pr_err("pinmux: can't set pingroup %s rising slew to %s: %d\n", + drive_pinmux_name(pingroup), + slew_name(slew_rising), err); + + err = tegra_drive_pinmux_set_slew_falling(pingroup, slew_falling); + if (err < 0) + pr_err("pinmux: can't set pingroup %s falling slew to %s: %d\n", + drive_pinmux_name(pingroup), + slew_name(slew_falling), err); +} + +void tegra_drive_pinmux_config_table(struct tegra_drive_pingroup_config *config, + int len) +{ + int i; + + for (i = 0; i < len; i++) + tegra_drive_pinmux_config_pingroup(config[i].pingroup, + config[i].hsm, + config[i].schmitt, + config[i].drive, + config[i].pull_down, + config[i].pull_up, + config[i].slew_rising, + config[i].slew_falling); +} + + +#ifdef CONFIG_DEBUG_FS + +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +static void dbg_pad_field(struct seq_file *s, int len) +{ + seq_putc(s, ','); + + while (len-- > -1) + seq_putc(s, ' '); +} + +static int dbg_pinmux_show(struct seq_file *s, void *unused) +{ + int i; + int len; + + for (i = 0; i < TEGRA_MAX_PINGROUP; i++) { + unsigned long tri; + unsigned long mux; + unsigned long pupd; + + seq_printf(s, "\t{TEGRA_PINGROUP_%s", pingroups[i].name); + len = strlen(pingroups[i].name); + dbg_pad_field(s, 5 - len); + + if (pingroups[i].mux_reg == REG_N) { + seq_printf(s, "TEGRA_MUX_NONE"); + len = strlen("NONE"); + } else { + mux = (pg_readl(TEGRA_PP_MUX_CTL(pingroups[i].mux_reg)) >> + pingroups[i].mux_bit) & 0x3; + if (pingroups[i].funcs[mux] == TEGRA_MUX_RSVD) { + seq_printf(s, "TEGRA_MUX_RSVD%1lu", mux+1); + len = 5; + } else { + seq_printf(s, "TEGRA_MUX_%s", + tegra_mux_names[pingroups[i].funcs[mux]]); + len = strlen(tegra_mux_names[pingroups[i].funcs[mux]]); + } + } + dbg_pad_field(s, 13-len); + + if (pingroups[i].mux_reg == REG_N) { + seq_printf(s, "TEGRA_PUPD_NORMAL"); + len = strlen("NORMAL"); + } else { + pupd = (pg_readl(TEGRA_PP_PU_PD(pingroups[i].pupd_reg)) >> + pingroups[i].pupd_bit) & 0x3; + seq_printf(s, "TEGRA_PUPD_%s", pupd_name(pupd)); + len = strlen(pupd_name(pupd)); + } + dbg_pad_field(s, 9 - len); + + if (pingroups[i].tri_reg == REG_N) { + seq_printf(s, "TEGRA_TRI_NORMAL"); + } else { + tri = (pg_readl(TEGRA_TRI_STATE(pingroups[i].tri_reg)) >> + pingroups[i].tri_bit) & 0x1; + + seq_printf(s, "TEGRA_TRI_%s", tri_name(tri)); + } + seq_printf(s, "},\n"); + } + return 0; +} + +static int dbg_pinmux_open(struct inode *inode, struct file *file) +{ + return single_open(file, dbg_pinmux_show, &inode->i_private); +} + +static const struct file_operations debug_fops = { + .open = dbg_pinmux_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int dbg_drive_pinmux_show(struct seq_file *s, void *unused) +{ + int i; + int len; + + for (i = 0; i < TEGRA_MAX_DRIVE_PINGROUP; i++) { + u32 reg; + + seq_printf(s, "\t{TEGRA_DRIVE_PINGROUP_%s", + drive_pingroups[i].name); + len = strlen(drive_pingroups[i].name); + dbg_pad_field(s, 7 - len); + + + reg = pg_readl(drive_pingroups[i].reg); + if (HSM_EN(reg)) { + seq_printf(s, "TEGRA_HSM_ENABLE"); + len = 16; + } else { + seq_printf(s, "TEGRA_HSM_DISABLE"); + len = 17; + } + dbg_pad_field(s, 17 - len); + + if (SCHMT_EN(reg)) { + seq_printf(s, "TEGRA_SCHMITT_ENABLE"); + len = 21; + } else { + seq_printf(s, "TEGRA_SCHMITT_DISABLE"); + len = 22; + } + dbg_pad_field(s, 22 - len); + + seq_printf(s, "TEGRA_DRIVE_%s", drive_name(LPMD(reg))); + len = strlen(drive_name(LPMD(reg))); + dbg_pad_field(s, 5 - len); + + seq_printf(s, "TEGRA_PULL_%d", DRVDN(reg)); + len = DRVDN(reg) < 10 ? 1 : 2; + dbg_pad_field(s, 2 - len); + + seq_printf(s, "TEGRA_PULL_%d", DRVUP(reg)); + len = DRVUP(reg) < 10 ? 1 : 2; + dbg_pad_field(s, 2 - len); + + seq_printf(s, "TEGRA_SLEW_%s", slew_name(SLWR(reg))); + len = strlen(slew_name(SLWR(reg))); + dbg_pad_field(s, 7 - len); + + seq_printf(s, "TEGRA_SLEW_%s", slew_name(SLWF(reg))); + + seq_printf(s, "},\n"); + } + return 0; +} + +static int dbg_drive_pinmux_open(struct inode *inode, struct file *file) +{ + return single_open(file, dbg_drive_pinmux_show, &inode->i_private); +} + +static const struct file_operations debug_drive_fops = { + .open = dbg_drive_pinmux_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init tegra_pinmux_debuginit(void) +{ + (void) debugfs_create_file("tegra_pinmux", S_IRUGO, + NULL, NULL, &debug_fops); + (void) debugfs_create_file("tegra_pinmux_drive", S_IRUGO, + NULL, NULL, &debug_drive_fops); + return 0; +} +late_initcall(tegra_pinmux_debuginit); +#endif |