1 files changed, 431 insertions, 0 deletions

diff --git a/drivers/pinctrl/spear/pinctrl-spear310.c b/drivers/pinctrl/spear/pinctrl-spear310.c
new file mode 100644
index 000000000000..1a9707605125
--- /dev/null
+++ b/drivers/pinctrl/spear/pinctrl-spear310.c
@@ -0,0 +1,431 @@
+/*
+ * Driver for the ST Microelectronics SPEAr310 pinmux
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * 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/err.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include "pinctrl-spear3xx.h"
+
+#define DRIVER_NAME "spear310-pinmux"
+
+/* addresses */
+#define PMX_CONFIG_REG                  0x08
+
+/* emi_cs_0_to_5_pins */
+static const unsigned emi_cs_0_to_5_pins[] = { 45, 46, 47, 48, 49, 50 };
+static struct spear_muxreg emi_cs_0_to_5_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_TIMER_0_1_MASK | PMX_TIMER_2_3_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux emi_cs_0_to_5_modemux[] = {
+        {
+                .muxregs = emi_cs_0_to_5_muxreg,
+                .nmuxregs = ARRAY_SIZE(emi_cs_0_to_5_muxreg),
+        },
+};
+
+static struct spear_pingroup emi_cs_0_to_5_pingroup = {
+        .name = "emi_cs_0_to_5_grp",
+        .pins = emi_cs_0_to_5_pins,
+        .npins = ARRAY_SIZE(emi_cs_0_to_5_pins),
+        .modemuxs = emi_cs_0_to_5_modemux,
+        .nmodemuxs = ARRAY_SIZE(emi_cs_0_to_5_modemux),
+};
+
+static const char *const emi_cs_0_to_5_grps[] = { "emi_cs_0_to_5_grp" };
+static struct spear_function emi_cs_0_to_5_function = {
+        .name = "emi",
+        .groups = emi_cs_0_to_5_grps,
+        .ngroups = ARRAY_SIZE(emi_cs_0_to_5_grps),
+};
+
+/* uart1_pins */
+static const unsigned uart1_pins[] = { 0, 1 };
+static struct spear_muxreg uart1_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_FIRDA_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux uart1_modemux[] = {
+        {
+                .muxregs = uart1_muxreg,
+                .nmuxregs = ARRAY_SIZE(uart1_muxreg),
+        },
+};
+
+static struct spear_pingroup uart1_pingroup = {
+        .name = "uart1_grp",
+        .pins = uart1_pins,
+        .npins = ARRAY_SIZE(uart1_pins),
+        .modemuxs = uart1_modemux,
+        .nmodemuxs = ARRAY_SIZE(uart1_modemux),
+};
+
+static const char *const uart1_grps[] = { "uart1_grp" };
+static struct spear_function uart1_function = {
+        .name = "uart1",
+        .groups = uart1_grps,
+        .ngroups = ARRAY_SIZE(uart1_grps),
+};
+
+/* uart2_pins */
+static const unsigned uart2_pins[] = { 43, 44 };
+static struct spear_muxreg uart2_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_TIMER_0_1_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux uart2_modemux[] = {
+        {
+                .muxregs = uart2_muxreg,
+                .nmuxregs = ARRAY_SIZE(uart2_muxreg),
+        },
+};
+
+static struct spear_pingroup uart2_pingroup = {
+        .name = "uart2_grp",
+        .pins = uart2_pins,
+        .npins = ARRAY_SIZE(uart2_pins),
+        .modemuxs = uart2_modemux,
+        .nmodemuxs = ARRAY_SIZE(uart2_modemux),
+};
+
+static const char *const uart2_grps[] = { "uart2_grp" };
+static struct spear_function uart2_function = {
+        .name = "uart2",
+        .groups = uart2_grps,
+        .ngroups = ARRAY_SIZE(uart2_grps),
+};
+
+/* uart3_pins */
+static const unsigned uart3_pins[] = { 37, 38 };
+static struct spear_muxreg uart3_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_UART0_MODEM_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux uart3_modemux[] = {
+        {
+                .muxregs = uart3_muxreg,
+                .nmuxregs = ARRAY_SIZE(uart3_muxreg),
+        },
+};
+
+static struct spear_pingroup uart3_pingroup = {
+        .name = "uart3_grp",
+        .pins = uart3_pins,
+        .npins = ARRAY_SIZE(uart3_pins),
+        .modemuxs = uart3_modemux,
+        .nmodemuxs = ARRAY_SIZE(uart3_modemux),
+};
+
+static const char *const uart3_grps[] = { "uart3_grp" };
+static struct spear_function uart3_function = {
+        .name = "uart3",
+        .groups = uart3_grps,
+        .ngroups = ARRAY_SIZE(uart3_grps),
+};
+
+/* uart4_pins */
+static const unsigned uart4_pins[] = { 39, 40 };
+static struct spear_muxreg uart4_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_UART0_MODEM_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux uart4_modemux[] = {
+        {
+                .muxregs = uart4_muxreg,
+                .nmuxregs = ARRAY_SIZE(uart4_muxreg),
+        },
+};
+
+static struct spear_pingroup uart4_pingroup = {
+        .name = "uart4_grp",
+        .pins = uart4_pins,
+        .npins = ARRAY_SIZE(uart4_pins),
+        .modemuxs = uart4_modemux,
+        .nmodemuxs = ARRAY_SIZE(uart4_modemux),
+};
+
+static const char *const uart4_grps[] = { "uart4_grp" };
+static struct spear_function uart4_function = {
+        .name = "uart4",
+        .groups = uart4_grps,
+        .ngroups = ARRAY_SIZE(uart4_grps),
+};
+
+/* uart5_pins */
+static const unsigned uart5_pins[] = { 41, 42 };
+static struct spear_muxreg uart5_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_UART0_MODEM_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux uart5_modemux[] = {
+        {
+                .muxregs = uart5_muxreg,
+                .nmuxregs = ARRAY_SIZE(uart5_muxreg),
+        },
+};
+
+static struct spear_pingroup uart5_pingroup = {
+        .name = "uart5_grp",
+        .pins = uart5_pins,
+        .npins = ARRAY_SIZE(uart5_pins),
+        .modemuxs = uart5_modemux,
+        .nmodemuxs = ARRAY_SIZE(uart5_modemux),
+};
+
+static const char *const uart5_grps[] = { "uart5_grp" };
+static struct spear_function uart5_function = {
+        .name = "uart5",
+        .groups = uart5_grps,
+        .ngroups = ARRAY_SIZE(uart5_grps),
+};
+
+/* fsmc_pins */
+static const unsigned fsmc_pins[] = { 34, 35, 36 };
+static struct spear_muxreg fsmc_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_SSP_CS_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux fsmc_modemux[] = {
+        {
+                .muxregs = fsmc_muxreg,
+                .nmuxregs = ARRAY_SIZE(fsmc_muxreg),
+        },
+};
+
+static struct spear_pingroup fsmc_pingroup = {
+        .name = "fsmc_grp",
+        .pins = fsmc_pins,
+        .npins = ARRAY_SIZE(fsmc_pins),
+        .modemuxs = fsmc_modemux,
+        .nmodemuxs = ARRAY_SIZE(fsmc_modemux),
+};
+
+static const char *const fsmc_grps[] = { "fsmc_grp" };
+static struct spear_function fsmc_function = {
+        .name = "fsmc",
+        .groups = fsmc_grps,
+        .ngroups = ARRAY_SIZE(fsmc_grps),
+};
+
+/* rs485_0_pins */
+static const unsigned rs485_0_pins[] = { 19, 20, 21, 22, 23 };
+static struct spear_muxreg rs485_0_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_MII_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux rs485_0_modemux[] = {
+        {
+                .muxregs = rs485_0_muxreg,
+                .nmuxregs = ARRAY_SIZE(rs485_0_muxreg),
+        },
+};
+
+static struct spear_pingroup rs485_0_pingroup = {
+        .name = "rs485_0_grp",
+        .pins = rs485_0_pins,
+        .npins = ARRAY_SIZE(rs485_0_pins),
+        .modemuxs = rs485_0_modemux,
+        .nmodemuxs = ARRAY_SIZE(rs485_0_modemux),
+};
+
+static const char *const rs485_0_grps[] = { "rs485_0" };
+static struct spear_function rs485_0_function = {
+        .name = "rs485_0",
+        .groups = rs485_0_grps,
+        .ngroups = ARRAY_SIZE(rs485_0_grps),
+};
+
+/* rs485_1_pins */
+static const unsigned rs485_1_pins[] = { 14, 15, 16, 17, 18 };
+static struct spear_muxreg rs485_1_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_MII_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux rs485_1_modemux[] = {
+        {
+                .muxregs = rs485_1_muxreg,
+                .nmuxregs = ARRAY_SIZE(rs485_1_muxreg),
+        },
+};
+
+static struct spear_pingroup rs485_1_pingroup = {
+        .name = "rs485_1_grp",
+        .pins = rs485_1_pins,
+        .npins = ARRAY_SIZE(rs485_1_pins),
+        .modemuxs = rs485_1_modemux,
+        .nmodemuxs = ARRAY_SIZE(rs485_1_modemux),
+};
+
+static const char *const rs485_1_grps[] = { "rs485_1" };
+static struct spear_function rs485_1_function = {
+        .name = "rs485_1",
+        .groups = rs485_1_grps,
+        .ngroups = ARRAY_SIZE(rs485_1_grps),
+};
+
+/* tdm_pins */
+static const unsigned tdm_pins[] = { 10, 11, 12, 13 };
+static struct spear_muxreg tdm_muxreg[] = {
+        {
+                .reg = PMX_CONFIG_REG,
+                .mask = PMX_MII_MASK,
+                .val = 0,
+        },
+};
+
+static struct spear_modemux tdm_modemux[] = {
+        {
+                .muxregs = tdm_muxreg,
+                .nmuxregs = ARRAY_SIZE(tdm_muxreg),
+        },
+};
+
+static struct spear_pingroup tdm_pingroup = {
+        .name = "tdm_grp",
+        .pins = tdm_pins,
+        .npins = ARRAY_SIZE(tdm_pins),
+        .modemuxs = tdm_modemux,
+        .nmodemuxs = ARRAY_SIZE(tdm_modemux),
+};
+
+static const char *const tdm_grps[] = { "tdm_grp" };
+static struct spear_function tdm_function = {
+        .name = "tdm",
+        .groups = tdm_grps,
+        .ngroups = ARRAY_SIZE(tdm_grps),
+};
+
+/* pingroups */
+static struct spear_pingroup *spear310_pingroups[] = {
+        SPEAR3XX_COMMON_PINGROUPS,
+        &emi_cs_0_to_5_pingroup,
+        &uart1_pingroup,
+        &uart2_pingroup,
+        &uart3_pingroup,
+        &uart4_pingroup,
+        &uart5_pingroup,
+        &fsmc_pingroup,
+        &rs485_0_pingroup,
+        &rs485_1_pingroup,
+        &tdm_pingroup,
+};
+
+/* functions */
+static struct spear_function *spear310_functions[] = {
+        SPEAR3XX_COMMON_FUNCTIONS,
+        &emi_cs_0_to_5_function,
+        &uart1_function,
+        &uart2_function,
+        &uart3_function,
+        &uart4_function,
+        &uart5_function,
+        &fsmc_function,
+        &rs485_0_function,
+        &rs485_1_function,
+        &tdm_function,
+};
+
+static struct of_device_id spear310_pinctrl_of_match[] __devinitdata = {
+        {
+                .compatible = "st,spear310-pinmux",
+        },
+        {},
+};
+
+static int __devinit spear310_pinctrl_probe(struct platform_device *pdev)
+{
+        int ret;
+
+        spear3xx_machdata.groups = spear310_pingroups;
+        spear3xx_machdata.ngroups = ARRAY_SIZE(spear310_pingroups);
+        spear3xx_machdata.functions = spear310_functions;
+        spear3xx_machdata.nfunctions = ARRAY_SIZE(spear310_functions);
+
+        pmx_init_addr(&spear3xx_machdata, PMX_CONFIG_REG);
+
+        spear3xx_machdata.modes_supported = false;
+
+        ret = spear_pinctrl_probe(pdev, &spear3xx_machdata);
+        if (ret)
+                return ret;
+
+        return 0;
+}
+
+static int __devexit spear310_pinctrl_remove(struct platform_device *pdev)
+{
+        return spear_pinctrl_remove(pdev);
+}
+
+static struct platform_driver spear310_pinctrl_driver = {
+        .driver = {
+                .name = DRIVER_NAME,
+                .owner = THIS_MODULE,
+                .of_match_table = spear310_pinctrl_of_match,
+        },
+        .probe = spear310_pinctrl_probe,
+        .remove = __devexit_p(spear310_pinctrl_remove),
+};
+
+static int __init spear310_pinctrl_init(void)
+{
+        return platform_driver_register(&spear310_pinctrl_driver);
+}
+arch_initcall(spear310_pinctrl_init);
+
+static void __exit spear310_pinctrl_exit(void)
+{
+        platform_driver_unregister(&spear310_pinctrl_driver);
+}
+module_exit(spear310_pinctrl_exit);
+
+MODULE_AUTHOR("Viresh Kumar <viresh.kumar@st.com>");
+MODULE_DESCRIPTION("ST Microelectronics SPEAr310 pinctrl driver");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(of, SPEAr310_pinctrl_of_match);