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Commit 83f6941a authored by Takeshi Kihara's avatar Takeshi Kihara Committed by Geert Uytterhoeven
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pinctrl: sh-pfc: r8a77990: Add bias pinconf support 

This patch implements control of pull-up and pull-down. On this SoC there
is no simple mapping of GP pins to bias register bits, so we need a table.
Signed-off-by: default avatarTakeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 6d4036a1
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Showing with 331 additions and 9 deletions
drivers/pinctrl/sh-pfc/pfc-r8a77990.c
View file @ 83f6941a
......@@ -16,15 +16,17 @@
#include "core.h"
#include "sh_pfc.h"
#define CPU_ALL_PORT(fn, sfx) \
PORT_GP_18(0, fn, sfx), \
PORT_GP_23(1, fn, sfx), \
PORT_GP_26(2, fn, sfx), \
PORT_GP_16(3, fn, sfx), \
PORT_GP_11(4, fn, sfx), \
PORT_GP_20(5, fn, sfx), \
PORT_GP_18(6, fn, sfx)
#define CFG_FLAGS (SH_PFC_PIN_CFG_PULL_UP | \
SH_PFC_PIN_CFG_PULL_DOWN)
#define CPU_ALL_PORT(fn, sfx) \
PORT_GP_CFG_18(0, fn, sfx, CFG_FLAGS), \
PORT_GP_CFG_23(1, fn, sfx, CFG_FLAGS), \
PORT_GP_CFG_26(2, fn, sfx, CFG_FLAGS), \
PORT_GP_CFG_16(3, fn, sfx, CFG_FLAGS), \
PORT_GP_CFG_11(4, fn, sfx, CFG_FLAGS), \
PORT_GP_CFG_20(5, fn, sfx, CFG_FLAGS), \
PORT_GP_CFG_18(6, fn, sfx, CFG_FLAGS)
/*
* F_() : just information
* FM() : macro for FN_xxx / xxx_MARK
......@@ -461,6 +463,17 @@ MOD_SEL0_3 \
MOD_SEL0_2 \
MOD_SEL0_1_0
/*
* These pins are not able to be muxed but have other properties
* that can be set, such as pull-up/pull-down enable.
*/
#define PINMUX_STATIC \
FM(AVB_TX_CTL) FM(AVB_TXC) FM(AVB_TD0) FM(AVB_TD1) FM(AVB_TD2) \
FM(AVB_TD3) \
FM(PRESETOUT_N) FM(FSCLKST_N) FM(TRST_N) FM(TCK) FM(TMS) FM(TDI) \
FM(ASEBRK) \
FM(MLB_REF)
enum {
PINMUX_RESERVED = 0,
......@@ -485,6 +498,7 @@ enum {
PINMUX_GPSR
PINMUX_IPSR
PINMUX_MOD_SELS
PINMUX_STATIC
PINMUX_MARK_END,
#undef F_
#undef FM
......@@ -493,6 +507,13 @@ enum {
static const u16 pinmux_data[] = {
PINMUX_DATA_GP_ALL(),
PINMUX_SINGLE(CLKOUT),
PINMUX_SINGLE(AVB_PHY_INT),
PINMUX_SINGLE(AVB_RD3),
PINMUX_SINGLE(AVB_RXC),
PINMUX_SINGLE(AVB_RX_CTL),
PINMUX_SINGLE(QSPI0_SSL),
/* IPSR0 */
PINMUX_IPSR_GPSR(IP0_3_0, QSPI0_SPCLK),
PINMUX_IPSR_MSEL(IP0_3_0, HSCK4_A, SEL_HSCIF4_0),
......@@ -1227,10 +1248,55 @@ static const u16 pinmux_data[] = {
PINMUX_IPSR_GPSR(IP15_31_28, USB30_OVC),
PINMUX_IPSR_MSEL(IP15_31_28, USB0_OVC_A, SEL_USB_20_CH0_0),
/*
* Static pins can not be muxed between different functions but
* still need mark entries in the pinmux list. Add each static
* pin to the list without an associated function. The sh-pfc
* core will do the right thing and skip trying to mux the pin
* while still applying configuration to it.
*/
#define FM(x) PINMUX_DATA(x##_MARK, 0),
PINMUX_STATIC
#undef FM
};
/*
* R8A77990 has 7 banks with 32 GPIOs in each => 224 GPIOs.
* Physical layout rows: A - AE, cols: 1 - 25.
*/
#define ROW_GROUP_A(r) ('Z' - 'A' + 1 + (r))
#define PIN_NUMBER(r, c) (((r) - 'A') * 25 + (c) + 300)
#define PIN_A_NUMBER(r, c) PIN_NUMBER(ROW_GROUP_A(r), c)
#define PIN_NONE U16_MAX
static const struct sh_pfc_pin pinmux_pins[] = {
PINMUX_GPIO_GP_ALL(),
/*
* Pins not associated with a GPIO port.
*
* The pin positions are different between different R8A77990
* packages, all that is needed for the pfc driver is a unique
* number for each pin. To this end use the pin layout from
* R8A77990 to calculate a unique number for each pin.
*/
SH_PFC_PIN_NAMED_CFG('F', 1, TRST_N, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('F', 3, TMS, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('F', 4, TCK, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('G', 2, TDI, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('G', 3, FSCLKST_N, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('H', 1, ASEBRK, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('N', 1, AVB_TXC, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('N', 2, AVB_TD0, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('N', 3, AVB_TD1, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('N', 5, AVB_TD2, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('N', 6, AVB_TD3, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('P', 3, AVB_TX_CTL, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('P', 4, AVB_MDIO, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('P', 5, AVB_MDC, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG('T', 21, MLB_REF, CFG_FLAGS),
SH_PFC_PIN_NAMED_CFG(ROW_GROUP_A('D'), 3, PRESETOUT_N, CFG_FLAGS),
};
static const struct sh_pfc_pin_group pinmux_groups[] = {
......@@ -1708,8 +1774,263 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
{ },
};
static const struct pinmux_bias_reg pinmux_bias_regs[] = {
{ PINMUX_BIAS_REG("PUEN0", 0xe6060400, "PUD0", 0xe6060440) {
[0] = RCAR_GP_PIN(2, 23), /* RD# */
[1] = RCAR_GP_PIN(2, 22), /* BS# */
[2] = RCAR_GP_PIN(2, 21), /* AVB_PHY_INT */
[3] = PIN_NUMBER('P', 5), /* AVB_MDC */
[4] = PIN_NUMBER('P', 4), /* AVB_MDIO */
[5] = RCAR_GP_PIN(2, 20), /* AVB_TXCREFCLK */
[6] = PIN_NUMBER('N', 6), /* AVB_TD3 */
[7] = PIN_NUMBER('N', 5), /* AVB_TD2 */
[8] = PIN_NUMBER('N', 3), /* AVB_TD1 */
[9] = PIN_NUMBER('N', 2), /* AVB_TD0 */
[10] = PIN_NUMBER('N', 1), /* AVB_TXC */
[11] = PIN_NUMBER('P', 3), /* AVB_TX_CTL */
[12] = RCAR_GP_PIN(2, 19), /* AVB_RD3 */
[13] = RCAR_GP_PIN(2, 18), /* AVB_RD2 */
[14] = RCAR_GP_PIN(2, 17), /* AVB_RD1 */
[15] = RCAR_GP_PIN(2, 16), /* AVB_RD0 */
[16] = RCAR_GP_PIN(2, 15), /* AVB_RXC */
[17] = RCAR_GP_PIN(2, 14), /* AVB_RX_CTL */
[18] = RCAR_GP_PIN(2, 13), /* RPC_RESET# */
[19] = RCAR_GP_PIN(2, 12), /* RPC_INT# */
[20] = RCAR_GP_PIN(2, 11), /* QSPI1_SSL */
[21] = RCAR_GP_PIN(2, 10), /* QSPI1_IO3 */
[22] = RCAR_GP_PIN(2, 9), /* QSPI1_IO2 */
[23] = RCAR_GP_PIN(2, 8), /* QSPI1_MISO/IO1 */
[24] = RCAR_GP_PIN(2, 7), /* QSPI1_MOSI/IO0 */
[25] = RCAR_GP_PIN(2, 6), /* QSPI1_SPCLK */
[26] = RCAR_GP_PIN(2, 5), /* QSPI0_SSL */
[27] = RCAR_GP_PIN(2, 4), /* QSPI0_IO3 */
[28] = RCAR_GP_PIN(2, 3), /* QSPI0_IO2 */
[29] = RCAR_GP_PIN(2, 2), /* QSPI0_MISO/IO1 */
[30] = RCAR_GP_PIN(2, 1), /* QSPI0_MOSI/IO0 */
[31] = RCAR_GP_PIN(2, 0), /* QSPI0_SPCLK */
} },
{ PINMUX_BIAS_REG("PUEN1", 0xe6060404, "PUD1", 0xe6060444) {
[0] = RCAR_GP_PIN(0, 4), /* D4 */
[1] = RCAR_GP_PIN(0, 3), /* D3 */
[2] = RCAR_GP_PIN(0, 2), /* D2 */
[3] = RCAR_GP_PIN(0, 1), /* D1 */
[4] = RCAR_GP_PIN(0, 0), /* D0 */
[5] = RCAR_GP_PIN(1, 22), /* WE0# */
[6] = RCAR_GP_PIN(1, 21), /* CS0# */
[7] = RCAR_GP_PIN(1, 20), /* CLKOUT */
[8] = RCAR_GP_PIN(1, 19), /* A19 */
[9] = RCAR_GP_PIN(1, 18), /* A18 */
[10] = RCAR_GP_PIN(1, 17), /* A17 */
[11] = RCAR_GP_PIN(1, 16), /* A16 */
[12] = RCAR_GP_PIN(1, 15), /* A15 */
[13] = RCAR_GP_PIN(1, 14), /* A14 */
[14] = RCAR_GP_PIN(1, 13), /* A13 */
[15] = RCAR_GP_PIN(1, 12), /* A12 */
[16] = RCAR_GP_PIN(1, 11), /* A11 */
[17] = RCAR_GP_PIN(1, 10), /* A10 */
[18] = RCAR_GP_PIN(1, 9), /* A9 */
[19] = RCAR_GP_PIN(1, 8), /* A8 */
[20] = RCAR_GP_PIN(1, 7), /* A7 */
[21] = RCAR_GP_PIN(1, 6), /* A6 */
[22] = RCAR_GP_PIN(1, 5), /* A5 */
[23] = RCAR_GP_PIN(1, 4), /* A4 */
[24] = RCAR_GP_PIN(1, 3), /* A3 */
[25] = RCAR_GP_PIN(1, 2), /* A2 */
[26] = RCAR_GP_PIN(1, 1), /* A1 */
[27] = RCAR_GP_PIN(1, 0), /* A0 */
[28] = PIN_NONE,
[29] = PIN_NONE,
[30] = RCAR_GP_PIN(2, 25), /* PUEN_EX_WAIT0 */
[31] = RCAR_GP_PIN(2, 24), /* PUEN_RD/WR# */
} },
{ PINMUX_BIAS_REG("PUEN2", 0xe6060408, "PUD2", 0xe6060448) {
[0] = RCAR_GP_PIN(3, 1), /* SD0_CMD */
[1] = RCAR_GP_PIN(3, 0), /* SD0_CLK */
[2] = PIN_NUMBER('H', 1), /* ASEBRK */
[3] = PIN_NONE,
[4] = PIN_NUMBER('G', 2), /* TDI */
[5] = PIN_NUMBER('F', 3), /* TMS */
[6] = PIN_NUMBER('F', 4), /* TCK */
[7] = PIN_NUMBER('F', 1), /* TRST# */
[8] = PIN_NONE,
[9] = PIN_NONE,
[10] = PIN_NONE,
[11] = PIN_NONE,
[12] = PIN_NONE,
[13] = PIN_NONE,
[14] = PIN_NONE,
[15] = PIN_NUMBER('G', 3), /* FSCLKST# */
[16] = RCAR_GP_PIN(0, 17), /* SDA4 */
[17] = RCAR_GP_PIN(0, 16), /* SCL4 */
[18] = PIN_NONE,
[19] = PIN_NONE,
[20] = PIN_A_NUMBER('D', 3), /* PRESETOUT# */
[21] = RCAR_GP_PIN(0, 15), /* D15 */
[22] = RCAR_GP_PIN(0, 14), /* D14 */
[23] = RCAR_GP_PIN(0, 13), /* D13 */
[24] = RCAR_GP_PIN(0, 12), /* D12 */
[25] = RCAR_GP_PIN(0, 11), /* D11 */
[26] = RCAR_GP_PIN(0, 10), /* D10 */
[27] = RCAR_GP_PIN(0, 9), /* D9 */
[28] = RCAR_GP_PIN(0, 8), /* D8 */
[29] = RCAR_GP_PIN(0, 7), /* D7 */
[30] = RCAR_GP_PIN(0, 6), /* D6 */
[31] = RCAR_GP_PIN(0, 5), /* D5 */
} },
{ PINMUX_BIAS_REG("PUEN3", 0xe606040c, "PUD3", 0xe606044c) {
[0] = RCAR_GP_PIN(5, 0), /* SCK0_A */
[1] = RCAR_GP_PIN(5, 4), /* RTS0#/TANS_A */
[2] = RCAR_GP_PIN(5, 3), /* CTS0#_A */
[3] = RCAR_GP_PIN(5, 2), /* TX0_A */
[4] = RCAR_GP_PIN(5, 1), /* RX0_A */
[5] = PIN_NONE,
[6] = PIN_NONE,
[7] = RCAR_GP_PIN(3, 15), /* SD1_WP */
[8] = RCAR_GP_PIN(3, 14), /* SD1_CD */
[9] = RCAR_GP_PIN(3, 13), /* SD0_WP */
[10] = RCAR_GP_PIN(3, 12), /* SD0_CD */
[11] = RCAR_GP_PIN(4, 10), /* SD3_DS */
[12] = RCAR_GP_PIN(4, 9), /* SD3_DAT7 */
[13] = RCAR_GP_PIN(4, 8), /* SD3_DAT6 */
[14] = RCAR_GP_PIN(4, 7), /* SD3_DAT5 */
[15] = RCAR_GP_PIN(4, 6), /* SD3_DAT4 */
[16] = RCAR_GP_PIN(4, 5), /* SD3_DAT3 */
[17] = RCAR_GP_PIN(4, 4), /* SD3_DAT2 */
[18] = RCAR_GP_PIN(4, 3), /* SD3_DAT1 */
[19] = RCAR_GP_PIN(4, 2), /* SD3_DAT0 */
[20] = RCAR_GP_PIN(4, 1), /* SD3_CMD */
[21] = RCAR_GP_PIN(4, 0), /* SD3_CLK */
[22] = RCAR_GP_PIN(3, 11), /* SD1_DAT3 */
[23] = RCAR_GP_PIN(3, 10), /* SD1_DAT2 */
[24] = RCAR_GP_PIN(3, 9), /* SD1_DAT1 */
[25] = RCAR_GP_PIN(3, 8), /* SD1_DAT0 */
[26] = RCAR_GP_PIN(3, 7), /* SD1_CMD */
[27] = RCAR_GP_PIN(3, 6), /* SD1_CLK */
[28] = RCAR_GP_PIN(3, 5), /* SD0_DAT3 */
[29] = RCAR_GP_PIN(3, 4), /* SD0_DAT2 */
[30] = RCAR_GP_PIN(3, 3), /* SD0_DAT1 */
[31] = RCAR_GP_PIN(3, 2), /* SD0_DAT0 */
} },
{ PINMUX_BIAS_REG("PUEN4", 0xe6060410, "PUD4", 0xe6060450) {
[0] = RCAR_GP_PIN(6, 8), /* AUDIO_CLKA */
[1] = RCAR_GP_PIN(6, 16), /* SSI_SDATA6 */
[2] = RCAR_GP_PIN(6, 15), /* SSI_WS6 */
[3] = RCAR_GP_PIN(6, 14), /* SSI_SCK6 */
[4] = RCAR_GP_PIN(6, 13), /* SSI_SDATA5 */
[5] = RCAR_GP_PIN(6, 12), /* SSI_WS5 */
[6] = RCAR_GP_PIN(6, 11), /* SSI_SCK5 */
[7] = RCAR_GP_PIN(6, 10), /* SSI_SDATA4 */
[8] = RCAR_GP_PIN(6, 7), /* SSI_SDATA3 */
[9] = RCAR_GP_PIN(6, 6), /* SSI_WS349 */
[10] = RCAR_GP_PIN(6, 5), /* SSI_SCK349 */
[11] = RCAR_GP_PIN(6, 4), /* SSI_SDATA2 */
[12] = RCAR_GP_PIN(6, 3), /* SSI_SDATA1 */
[13] = RCAR_GP_PIN(6, 2), /* SSI_SDATA0 */
[14] = RCAR_GP_PIN(6, 1), /* SSI_WS01239 */
[15] = RCAR_GP_PIN(6, 0), /* SSI_SCK01239 */
[16] = PIN_NUMBER('T', 21), /* MLB_REF */
[17] = RCAR_GP_PIN(5, 19), /* MLB_DAT */
[18] = RCAR_GP_PIN(5, 18), /* MLB_SIG */
[19] = RCAR_GP_PIN(5, 17), /* MLB_CLK */
[20] = RCAR_GP_PIN(5, 16), /* SSI_SDATA9 */
[21] = RCAR_GP_PIN(5, 15), /* MSIOF0_SS2 */
[22] = RCAR_GP_PIN(5, 14), /* MSIOF0_SS1 */
[23] = RCAR_GP_PIN(5, 13), /* MSIOF0_SYNC */
[24] = RCAR_GP_PIN(5, 12), /* MSIOF0_TXD */
[25] = RCAR_GP_PIN(5, 11), /* MSIOF0_RXD */
[26] = RCAR_GP_PIN(5, 10), /* MSIOF0_SCK */
[27] = RCAR_GP_PIN(5, 9), /* RX2_A */
[28] = RCAR_GP_PIN(5, 8), /* TX2_A */
[29] = RCAR_GP_PIN(5, 7), /* SCK2_A */
[30] = RCAR_GP_PIN(5, 6), /* TX1 */
[31] = RCAR_GP_PIN(5, 5), /* RX1 */
} },
{ PINMUX_BIAS_REG("PUEN5", 0xe6060414, "PUD5", 0xe6060454) {
[0] = PIN_NONE,
[1] = PIN_NONE,
[2] = PIN_NONE,
[3] = PIN_NONE,
[4] = PIN_NONE,
[5] = PIN_NONE,
[6] = PIN_NONE,
[7] = PIN_NONE,
[8] = PIN_NONE,
[9] = PIN_NONE,
[10] = PIN_NONE,
[11] = PIN_NONE,
[12] = PIN_NONE,
[13] = PIN_NONE,
[14] = PIN_NONE,
[15] = PIN_NONE,
[16] = PIN_NONE,
[17] = PIN_NONE,
[18] = PIN_NONE,
[19] = PIN_NONE,
[20] = PIN_NONE,
[21] = PIN_NONE,
[22] = PIN_NONE,
[23] = PIN_NONE,
[24] = PIN_NONE,
[25] = PIN_NONE,
[26] = PIN_NONE,
[27] = PIN_NONE,
[28] = PIN_NONE,
[29] = PIN_NONE,
[30] = RCAR_GP_PIN(6, 9), /* PUEN_USB30_OVC */
[31] = RCAR_GP_PIN(6, 17), /* PUEN_USB30_PWEN */
} },
{ /* sentinel */ },
};
static unsigned int r8a77990_pinmux_get_bias(struct sh_pfc *pfc,
unsigned int pin)
{
const struct pinmux_bias_reg *reg;
unsigned int bit;
reg = sh_pfc_pin_to_bias_reg(pfc, pin, &bit);
if (!reg)
return PIN_CONFIG_BIAS_DISABLE;
if (!(sh_pfc_read(pfc, reg->puen) & BIT(bit)))
return PIN_CONFIG_BIAS_DISABLE;
else if (sh_pfc_read(pfc, reg->pud) & BIT(bit))
return PIN_CONFIG_BIAS_PULL_UP;
else
return PIN_CONFIG_BIAS_PULL_DOWN;
}
static void r8a77990_pinmux_set_bias(struct sh_pfc *pfc, unsigned int pin,
unsigned int bias)
{
const struct pinmux_bias_reg *reg;
u32 enable, updown;
unsigned int bit;
reg = sh_pfc_pin_to_bias_reg(pfc, pin, &bit);
if (!reg)
return;
enable = sh_pfc_read(pfc, reg->puen) & ~BIT(bit);
if (bias != PIN_CONFIG_BIAS_DISABLE)
enable |= BIT(bit);
updown = sh_pfc_read(pfc, reg->pud) & ~BIT(bit);
if (bias == PIN_CONFIG_BIAS_PULL_UP)
updown |= BIT(bit);
sh_pfc_write(pfc, reg->pud, updown);
sh_pfc_write(pfc, reg->puen, enable);
}
static const struct sh_pfc_soc_operations r8a77990_pinmux_ops = {
.get_bias = r8a77990_pinmux_get_bias,
.set_bias = r8a77990_pinmux_set_bias,
};
const struct sh_pfc_soc_info r8a77990_pinmux_info = {
.name = "r8a77990_pfc",
.ops = &r8a77990_pinmux_ops,
.unlock_reg = 0xe6060000, /* PMMR */
.function = { PINMUX_FUNCTION_BEGIN, PINMUX_FUNCTION_END },
......@@ -1722,6 +2043,7 @@ const struct sh_pfc_soc_info r8a77990_pinmux_info = {
.nr_functions = ARRAY_SIZE(pinmux_functions),
.cfg_regs = pinmux_config_regs,
.bias_regs = pinmux_bias_regs,
.pinmux_data = pinmux_data,
.pinmux_data_size = ARRAY_SIZE(pinmux_data),
......
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