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Date: Thu, 22 Feb 2018 14:27:05 +0100
From: Niklas Cassel <niklas.cassel@...s.com>
To: Jesper Nilsson <jespern@...s.com>, Lars Persson <larper@...s.com>,
Niklas Cassel <niklass@...s.com>,
Linus Walleij <linus.walleij@...aro.org>
Cc: linux-arm-kernel@...s.com, linux-gpio@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] pinctrl: artpec-6: Add smaller groups for uarts
From: Jesper Nilsson <jesper.nilsson@...s.com>
Add group configuration for uarts that are cut down
variants, the standard being full, i.e. all signals,
flow control, i.e. rx/tx and cts/rts, and rx/tx only.
This allows us to be more precise in which pins we're
actually using.
Signed-off-by: Jesper Nilsson <jesper.nilsson@...s.com>
---
drivers/pinctrl/pinctrl-artpec6.c | 66 +++++++++++++++++++++++++++++----------
1 file changed, 50 insertions(+), 16 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-artpec6.c b/drivers/pinctrl/pinctrl-artpec6.c
index e33781cd0a05..d89dc43c5757 100644
--- a/drivers/pinctrl/pinctrl-artpec6.c
+++ b/drivers/pinctrl/pinctrl-artpec6.c
@@ -277,37 +277,61 @@ static const struct artpec6_pin_group artpec6_pin_groups[] = {
.config = ARTPEC6_CONFIG_3,
},
{
- .name = "uart0grp0",
+ .name = "uart0grp0", /* All pins. */
.pins = uart0_pins0,
.num_pins = ARRAY_SIZE(uart0_pins0),
.config = ARTPEC6_CONFIG_1,
},
{
- .name = "uart0grp1",
+ .name = "uart0grp1", /* RX/TX and RTS/CTS */
.pins = uart0_pins1,
.num_pins = ARRAY_SIZE(uart0_pins1),
.config = ARTPEC6_CONFIG_1,
},
{
- .name = "uart1grp0",
+ .name = "uart0grp2", /* Only RX/TX pins. */
+ .pins = uart0_pins1,
+ .num_pins = ARRAY_SIZE(uart0_pins1) - 2,
+ .config = ARTPEC6_CONFIG_1,
+ },
+ {
+ .name = "uart1grp0", /* RX/TX and RTS/CTS */
.pins = uart1_pins0,
.num_pins = ARRAY_SIZE(uart1_pins0),
.config = ARTPEC6_CONFIG_2,
},
{
- .name = "uart2grp0",
+ .name = "uart1grp1", /* Only RX/TX pins. */
+ .pins = uart1_pins0,
+ .num_pins = 2,
+ .config = ARTPEC6_CONFIG_2,
+ },
+ {
+ .name = "uart2grp0", /* Full pinout */
.pins = uart2_pins0,
.num_pins = ARRAY_SIZE(uart2_pins0),
.config = ARTPEC6_CONFIG_1,
},
{
- .name = "uart2grp1",
+ .name = "uart2grp1", /* RX/TX and RTS/CTS */
.pins = uart2_pins1,
.num_pins = ARRAY_SIZE(uart2_pins1),
.config = ARTPEC6_CONFIG_1,
},
{
- .name = "uart3grp0",
+ .name = "uart2grp2", /* Only RX/TX */
+ .pins = uart2_pins1,
+ .num_pins = 2,
+ .config = ARTPEC6_CONFIG_1,
+ },
+ {
+ .name = "uart3grp0", /* RX/TX and CTS/RTS */
+ .pins = uart3_pins0,
+ .num_pins = ARRAY_SIZE(uart3_pins0),
+ .config = ARTPEC6_CONFIG_0,
+ },
+ {
+ .name = "uart3grp1", /* Only RX/TX */
.pins = uart3_pins0,
.num_pins = ARRAY_SIZE(uart3_pins0),
.config = ARTPEC6_CONFIG_0,
@@ -319,13 +343,19 @@ static const struct artpec6_pin_group artpec6_pin_groups[] = {
.config = ARTPEC6_CONFIG_2,
},
{
- .name = "uart5grp0",
+ .name = "uart5grp0", /* TX/RX and RTS/CTS */
.pins = uart5_pins0,
.num_pins = ARRAY_SIZE(uart5_pins0),
.config = ARTPEC6_CONFIG_2,
},
{
- .name = "uart5nocts",
+ .name = "uart5grp1", /* Only TX/RX */
+ .pins = uart5_pins0,
+ .num_pins = 2,
+ .config = ARTPEC6_CONFIG_2,
+ },
+ {
+ .name = "uart5nocts", /* TX/RX/RTS */
.pins = uart5_pins0,
.num_pins = ARRAY_SIZE(uart5_pins0) - 1,
.config = ARTPEC6_CONFIG_2,
@@ -457,8 +487,9 @@ static const char * const gpiogrps[] = {
"cpuclkoutgrp0", "udlclkoutgrp0", "i2c1grp0", "i2c2grp0",
"i2c3grp0", "i2s0grp0", "i2s1grp0", "i2srefclkgrp0",
"spi0grp0", "spi1grp0", "pciedebuggrp0", "uart0grp0",
- "uart0grp1", "uart1grp0", "uart2grp0", "uart2grp1",
- "uart4grp0", "uart5grp0",
+ "uart0grp1", "uart0grp2", "uart1grp0", "uart1grp1",
+ "uart2grp0", "uart2grp1", "uart2grp2", "uart4grp0", "uart5grp0",
+ "uart5grp1", "uart5nocts",
};
static const char * const cpuclkoutgrps[] = { "cpuclkoutgrp0" };
static const char * const udlclkoutgrps[] = { "udlclkoutgrp0" };
@@ -471,12 +502,15 @@ static const char * const i2srefclkgrps[] = { "i2srefclkgrp0" };
static const char * const spi0grps[] = { "spi0grp0" };
static const char * const spi1grps[] = { "spi1grp0" };
static const char * const pciedebuggrps[] = { "pciedebuggrp0" };
-static const char * const uart0grps[] = { "uart0grp0", "uart0grp1" };
-static const char * const uart1grps[] = { "uart1grp0" };
-static const char * const uart2grps[] = { "uart2grp0", "uart2grp1" };
+static const char * const uart0grps[] = { "uart0grp0", "uart0grp1",
+ "uart0grp2" };
+static const char * const uart1grps[] = { "uart1grp0", "uart1grp1" };
+static const char * const uart2grps[] = { "uart2grp0", "uart2grp1",
+ "uart2grp2" };
static const char * const uart3grps[] = { "uart3grp0" };
-static const char * const uart4grps[] = { "uart4grp0" };
-static const char * const uart5grps[] = { "uart5grp0", "uart5nocts" };
+static const char * const uart4grps[] = { "uart4grp0", "uart4grp1" };
+static const char * const uart5grps[] = { "uart5grp0", "uart5grp1",
+ "uart5nocts" };
static const char * const nandgrps[] = { "nandgrp0" };
static const char * const sdio0grps[] = { "sdio0grp0" };
static const char * const sdio1grps[] = { "sdio1grp0" };
@@ -601,7 +635,7 @@ static int artpec6_pmx_get_functions_count(struct pinctrl_dev *pctldev)
}
static const char *artpec6_pmx_get_fname(struct pinctrl_dev *pctldev,
- unsigned int function)
+ unsigned int function)
{
return artpec6_pmx_functions[function].name;
}
--
2.14.2
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