From 5ee7ec7bafe6d02ebacdde06bb536f55cff4cdd8 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 25 Mar 2015 12:04:36 -0600 Subject: [PATCH] ARM: tegra: pinctrl: add support for MIPI PAD control groups Some pinmux controls are in a different register set. Add support for manipulating those in a similar way to existing pins/groups. Signed-off-by: Stephen Warren Signed-off-by: Tom Warren --- arch/arm/include/asm/arch-tegra/pinmux.h | 16 +++++++ arch/arm/mach-tegra/pinmux-common.c | 57 ++++++++++++++++++++++++ 2 files changed, 73 insertions(+) diff --git a/arch/arm/include/asm/arch-tegra/pinmux.h b/arch/arm/include/asm/arch-tegra/pinmux.h index e3eb706fcb..3cc52dd773 100644 --- a/arch/arm/include/asm/arch-tegra/pinmux.h +++ b/arch/arm/include/asm/arch-tegra/pinmux.h @@ -229,4 +229,20 @@ void pinmux_config_drvgrp_table(const struct pmux_drvgrp_config *config, #endif /* TEGRA_PMX_SOC_HAS_DRVGRPS */ +#ifdef TEGRA_PMX_SOC_HAS_MIPI_PAD_CTRL_GRPS +struct pmux_mipipadctrlgrp_config { + u32 grp:16; /* pin group PMUX_MIPIPADCTRLGRP_x */ + u32 func:8; /* function to assign PMUX_FUNC_... */ +}; + +void pinmux_config_mipipadctrlgrp_table( + const struct pmux_mipipadctrlgrp_config *config, int len); + +struct pmux_mipipadctrlgrp_desc { + u8 funcs[2]; +}; + +extern const struct pmux_mipipadctrlgrp_desc *tegra_soc_mipipadctrl_groups; +#endif /* TEGRA_PMX_SOC_HAS_MIPI_PAD_CTRL_GRPS */ + #endif /* _TEGRA_PINMUX_H_ */ diff --git a/arch/arm/mach-tegra/pinmux-common.c b/arch/arm/mach-tegra/pinmux-common.c index 96dbb5e89b..b4a1432afc 100644 --- a/arch/arm/mach-tegra/pinmux-common.c +++ b/arch/arm/mach-tegra/pinmux-common.c @@ -108,6 +108,8 @@ #define DRV_REG(group) _R(TEGRA_PMX_SOC_DRV_GROUP_BASE_REG + ((group) * 4)) +#define MIPIPADCTRL_REG(group) _R(TEGRA_PMX_SOC_MIPIPADCTRL_BASE_REG + ((group) * 4)) + /* * We could force arch-tegraNN/pinmux.h to define all of these. However, * that's a lot of defines, and for now it's manageable to just put a @@ -696,3 +698,58 @@ void pinmux_config_drvgrp_table(const struct pmux_drvgrp_config *config, pinmux_config_drvgrp(&config[i]); } #endif /* TEGRA_PMX_SOC_HAS_DRVGRPS */ + +#ifdef TEGRA_PMX_SOC_HAS_MIPI_PAD_CTRL_GRPS + +#define pmux_mipipadctrlgrp_isvalid(pd) (((pd) >= 0) && ((pd) < PMUX_MIPIPADCTRLGRP_COUNT)) + +static void pinmux_mipipadctrl_set_func(enum pmux_mipipadctrlgrp grp, + enum pmux_func func) +{ + u32 *reg = MIPIPADCTRL_REG(grp); + int i, mux = -1; + u32 val; + + if (func == PMUX_FUNC_DEFAULT) + return; + + /* Error check grp and func */ + assert(pmux_mipipadctrlgrp_isvalid(grp)); + assert(pmux_func_isvalid(func)); + + if (func >= PMUX_FUNC_RSVD1) { + mux = (func - PMUX_FUNC_RSVD1) & 1; + } else { + /* Search for the appropriate function */ + for (i = 0; i < 2; i++) { + if (tegra_soc_mipipadctrl_groups[grp].funcs[i] + == func) { + mux = i; + break; + } + } + } + assert(mux != -1); + + val = readl(reg); + val &= ~(1 << 1); + val |= (mux << 1); + writel(val, reg); +} + +static void pinmux_config_mipipadctrlgrp(const struct pmux_mipipadctrlgrp_config *config) +{ + enum pmux_mipipadctrlgrp grp = config->grp; + + pinmux_mipipadctrl_set_func(grp, config->func); +} + +void pinmux_config_mipipadctrlgrp_table( + const struct pmux_mipipadctrlgrp_config *config, int len) +{ + int i; + + for (i = 0; i < len; i++) + pinmux_config_mipipadctrlgrp(&config[i]); +} +#endif /* TEGRA_PMX_SOC_HAS_MIPI_PAD_CTRL_GRPS */ -- 2.25.1