ARM: 6020/1: ST SPEAr: Adding gpio pad multiplexing support
GPIO Pads in spear platform are are multiplexed in various machines.
This patch adds support for this pad multiplexing.
Reviewed-by: Linus Walleij <linux.walleij@stericsson.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-spear3xx/spear310.c b/arch/arm/mach-spear3xx/spear310.c
index 6eb62f9..dd5a572 100644
--- a/arch/arm/mach-spear3xx/spear310.c
+++ b/arch/arm/mach-spear3xx/spear310.c
@@ -16,10 +16,139 @@
#include <mach/generic.h>
#include <mach/spear.h>
+/* pad multiplexing support */
+/* muxing registers */
+#define PAD_MUX_CONFIG_REG 0x08
+
+/* devices */
+struct pmx_dev_mode pmx_emi_cs_0_1_4_5_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_TIMER_3_4_MASK,
+ },
+};
+
+struct pmx_dev pmx_emi_cs_0_1_4_5 = {
+ .name = "emi_cs_0_1_4_5",
+ .modes = pmx_emi_cs_0_1_4_5_modes,
+ .mode_count = ARRAY_SIZE(pmx_emi_cs_0_1_4_5_modes),
+ .enb_on_reset = 1,
+};
+
+struct pmx_dev_mode pmx_emi_cs_2_3_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_TIMER_1_2_MASK,
+ },
+};
+
+struct pmx_dev pmx_emi_cs_2_3 = {
+ .name = "emi_cs_2_3",
+ .modes = pmx_emi_cs_2_3_modes,
+ .mode_count = ARRAY_SIZE(pmx_emi_cs_2_3_modes),
+ .enb_on_reset = 1,
+};
+
+struct pmx_dev_mode pmx_uart1_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_FIRDA_MASK,
+ },
+};
+
+struct pmx_dev pmx_uart1 = {
+ .name = "uart1",
+ .modes = pmx_uart1_modes,
+ .mode_count = ARRAY_SIZE(pmx_uart1_modes),
+ .enb_on_reset = 1,
+};
+
+struct pmx_dev_mode pmx_uart2_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_TIMER_1_2_MASK,
+ },
+};
+
+struct pmx_dev pmx_uart2 = {
+ .name = "uart2",
+ .modes = pmx_uart2_modes,
+ .mode_count = ARRAY_SIZE(pmx_uart2_modes),
+ .enb_on_reset = 1,
+};
+
+struct pmx_dev_mode pmx_uart3_4_5_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_UART0_MODEM_MASK,
+ },
+};
+
+struct pmx_dev pmx_uart3_4_5 = {
+ .name = "uart3_4_5",
+ .modes = pmx_uart3_4_5_modes,
+ .mode_count = ARRAY_SIZE(pmx_uart3_4_5_modes),
+ .enb_on_reset = 1,
+};
+
+struct pmx_dev_mode pmx_fsmc_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_SSP_CS_MASK,
+ },
+};
+
+struct pmx_dev pmx_fsmc = {
+ .name = "fsmc",
+ .modes = pmx_fsmc_modes,
+ .mode_count = ARRAY_SIZE(pmx_fsmc_modes),
+ .enb_on_reset = 1,
+};
+
+struct pmx_dev_mode pmx_rs485_0_1_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_MII_MASK,
+ },
+};
+
+struct pmx_dev pmx_rs485_0_1 = {
+ .name = "rs485_0_1",
+ .modes = pmx_rs485_0_1_modes,
+ .mode_count = ARRAY_SIZE(pmx_rs485_0_1_modes),
+ .enb_on_reset = 1,
+};
+
+struct pmx_dev_mode pmx_tdm0_modes[] = {
+ {
+ .ids = 0x00,
+ .mask = PMX_MII_MASK,
+ },
+};
+
+struct pmx_dev pmx_tdm0 = {
+ .name = "tdm0",
+ .modes = pmx_tdm0_modes,
+ .mode_count = ARRAY_SIZE(pmx_tdm0_modes),
+ .enb_on_reset = 1,
+};
+
+/* pmx driver structure */
+struct pmx_driver pmx_driver = {
+ .mux_reg = {.offset = PAD_MUX_CONFIG_REG, .mask = 0x00007fff},
+};
+
/* Add spear310 specific devices here */
+/* spear310 routines */
void __init spear310_init(void)
{
/* call spear3xx family common init function */
spear3xx_init();
}
+
+void spear310_pmx_init(void)
+{
+ spear_pmx_init(&pmx_driver, SPEAR310_SOC_CONFIG_BASE,
+ SPEAR310_SOC_CONFIG_SIZE);
+}