ARM: i.MX IOMUX-V3 replace struct pad_desc with bitmapped cookie

The following patch is a first step to convert the 'struct pad_desc'
to a bitmapped cookie to facilitate adding platform specific pullup or
drive strength definitions to existing pad definitions without need to
rewrite the complete pad def.

The patch wraps 'struct pad_desc' in an opaque data type and
introduces macros to access the individual members.
This patch does not constitute any functional change!

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c

@@ -37,7 +37,7 @@
 
 #include "devices-imx25.h"
 
-static struct pad_desc eukrea_mbimxsd_pads[] = {
+static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
 	/* LCD */
 	MX25_PAD_LD0__LD0,
 	MX25_PAD_LD1__LD1,

arch/arm/mach-imx/mach-eukrea_cpuimx25.c

@@ -46,7 +46,7 @@ static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };
 
-static struct pad_desc eukrea_cpuimx25_pads[] = {
+static iomux_v3_cfg_t eukrea_cpuimx25_pads[] = {
 	/* FEC - RMII */
 	MX25_PAD_FEC_MDC__FEC_MDC,
 	MX25_PAD_FEC_MDIO__FEC_MDIO,

arch/arm/mach-imx/mach-mx25_3ds.c

@@ -47,7 +47,7 @@ static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };
 
-static struct pad_desc mx25pdk_pads[] = {
+static iomux_v3_cfg_t mx25pdk_pads[] = {
 	MX25_PAD_FEC_MDC__FEC_MDC,
 	MX25_PAD_FEC_MDIO__FEC_MDIO,
 	MX25_PAD_FEC_TDATA0__FEC_TDATA0,

arch/arm/mach-mx3/eukrea_mbimxsd-baseboard.c

@@ -111,7 +111,7 @@ static struct mx3fb_platform_data mx3fb_pdata = {
 	.num_modes	= ARRAY_SIZE(fb_modedb),
 };
 
-static struct pad_desc eukrea_mbimxsd_pads[] = {
+static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
 	/* LCD */
 	MX35_PAD_LD0__IPU_DISPB_DAT_0,
 	MX35_PAD_LD1__IPU_DISPB_DAT_1,

arch/arm/mach-mx3/mach-cpuimx35.c

@@ -72,7 +72,7 @@ static struct i2c_board_info eukrea_cpuimx35_i2c_devices[] = {
 	},
 };
 
-static struct pad_desc eukrea_cpuimx35_pads[] = {
+static iomux_v3_cfg_t eukrea_cpuimx35_pads[] = {
 	/* UART1 */
 	MX35_PAD_CTS1__UART1_CTS,
 	MX35_PAD_RTS1__UART1_RTS,

arch/arm/mach-mx3/mach-mx35_3ds.c

@@ -79,7 +79,7 @@ static struct platform_device *devices[] __initdata = {
 	&mx35pdk_flash,
 };
 
-static struct pad_desc mx35pdk_pads[] = {
+static iomux_v3_cfg_t mx35pdk_pads[] = {
 	/* UART1 */
 	MX35_PAD_CTS1__UART1_CTS,
 	MX35_PAD_RTS1__UART1_RTS,

arch/arm/mach-mx3/mach-pcm043.c

@@ -140,7 +140,7 @@ static struct platform_device *devices[] __initdata = {
 	&pcm043_flash,
 };
 
-static struct pad_desc pcm043_pads[] = {
+static iomux_v3_cfg_t pcm043_pads[] = {
 	/* UART1 */
 	MX35_PAD_CTS1__UART1_CTS,
 	MX35_PAD_RTS1__UART1_RTS,
@@ -227,8 +227,8 @@ static struct pad_desc pcm043_pads[] = {
 
 static void pcm043_ac97_warm_reset(struct snd_ac97 *ac97)
 {
-	struct pad_desc txfs_gpio = MX35_PAD_STXFS4__GPIO2_31;
-	struct pad_desc txfs = MX35_PAD_STXFS4__AUDMUX_AUD4_TXFS;
+	iomux_v3_cfg_t txfs_gpio = MX35_PAD_STXFS4__GPIO2_31;
+	iomux_v3_cfg_t txfs = MX35_PAD_STXFS4__AUDMUX_AUD4_TXFS;
 	int ret;
 
 	ret = gpio_request(AC97_GPIO_TXFS, "SSI");
@@ -250,11 +250,11 @@ static void pcm043_ac97_warm_reset(struct snd_ac97 *ac97)
 
 static void pcm043_ac97_cold_reset(struct snd_ac97 *ac97)
 {
-	struct pad_desc txfs_gpio = MX35_PAD_STXFS4__GPIO2_31;
-	struct pad_desc txfs = MX35_PAD_STXFS4__AUDMUX_AUD4_TXFS;
-	struct pad_desc txd_gpio = MX35_PAD_STXD4__GPIO2_28;
-	struct pad_desc txd = MX35_PAD_STXD4__AUDMUX_AUD4_TXD;
-	struct pad_desc reset_gpio = MX35_PAD_SD2_CMD__GPIO2_0;
+	iomux_v3_cfg_t txfs_gpio = MX35_PAD_STXFS4__GPIO2_31;
+	iomux_v3_cfg_t txfs = MX35_PAD_STXFS4__AUDMUX_AUD4_TXFS;
+	iomux_v3_cfg_t txd_gpio = MX35_PAD_STXD4__GPIO2_28;
+	iomux_v3_cfg_t txd = MX35_PAD_STXD4__AUDMUX_AUD4_TXD;
+	iomux_v3_cfg_t reset_gpio = MX35_PAD_SD2_CMD__GPIO2_0;
 	int ret;
 
 	ret = gpio_request(AC97_GPIO_TXFS, "SSI");

arch/arm/mach-mx5/board-cpuimx51.c

@@ -113,7 +113,7 @@ static struct platform_device *devices[] __initdata = {
 #endif
 };
 
-static struct pad_desc eukrea_cpuimx51_pads[] = {
+static iomux_v3_cfg_t eukrea_cpuimx51_pads[] = {
 	/* UART1 */
 	MX51_PAD_UART1_RXD__UART1_RXD,
 	MX51_PAD_UART1_TXD__UART1_TXD,

arch/arm/mach-mx5/board-cpuimx51sd.c

@@ -68,7 +68,7 @@
 #define CPUIMX51SD_GPIO_3_12 IOMUX_PAD(0x57C, 0x194, 3, 0x0, 0, \
 				MX51_PAD_CTRL_1 | PAD_CTL_PUS_22K_UP)
 
-static struct pad_desc eukrea_cpuimx51sd_pads[] = {
+static iomux_v3_cfg_t eukrea_cpuimx51sd_pads[] = {
 	/* UART1 */
 	MX51_PAD_UART1_RXD__UART1_RXD,
 	MX51_PAD_UART1_TXD__UART1_TXD,

arch/arm/mach-mx5/board-mx51_3ds.c

@@ -30,7 +30,7 @@
 #define EXPIO_PARENT_INT	(MXC_INTERNAL_IRQS + GPIO_PORTA + 6)
 #define MX51_3DS_ECSPI2_CS	(GPIO_PORTC + 28)
 
-static struct pad_desc mx51_3ds_pads[] = {
+static iomux_v3_cfg_t mx51_3ds_pads[] = {
 	/* UART1 */
 	MX51_PAD_UART1_RXD__UART1_RXD,
 	MX51_PAD_UART1_TXD__UART1_TXD,

arch/arm/mach-mx5/board-mx51_babbage.c

@@ -65,7 +65,7 @@ static const struct gpio_keys_platform_data imx_button_data __initconst = {
 	.nbuttons	= ARRAY_SIZE(babbage_buttons),
 };
 
-static struct pad_desc mx51babbage_pads[] = {
+static iomux_v3_cfg_t mx51babbage_pads[] = {
 	/* UART1 */
 	MX51_PAD_UART1_RXD__UART1_RXD,
 	MX51_PAD_UART1_TXD__UART1_TXD,
@@ -177,8 +177,8 @@ static struct imxi2c_platform_data babbage_hsi2c_data = {
 
 static int gpio_usbh1_active(void)
 {
-	struct pad_desc usbh1stp_gpio = MX51_PAD_USBH1_STP__GPIO_1_27;
-	struct pad_desc phyreset_gpio = MX51_PAD_EIM_D21__GPIO_2_5;
+	iomux_v3_cfg_t usbh1stp_gpio = MX51_PAD_USBH1_STP__GPIO_1_27;
+	iomux_v3_cfg_t phyreset_gpio = MX51_PAD_EIM_D21__GPIO_2_5;
 	int ret;
 
 	/* Set USBH1_STP to GPIO and toggle it */
@@ -315,8 +315,8 @@ __setup("otg_mode=", babbage_otg_mode);
  */
 static void __init mxc_board_init(void)
 {
-	struct pad_desc usbh1stp = MX51_PAD_USBH1_STP__USBH1_STP;
-	struct pad_desc power_key = MX51_PAD_EIM_A27__GPIO_2_21;
+	iomux_v3_cfg_t usbh1stp = MX51_PAD_USBH1_STP__USBH1_STP;
+	iomux_v3_cfg_t power_key = MX51_PAD_EIM_A27__GPIO_2_21;
 
 #if defined(CONFIG_CPU_FREQ_IMX)
 	get_cpu_op = mx51_get_cpu_op;

arch/arm/mach-mx5/board-mx51_efikamx.c

@@ -39,7 +39,7 @@
 
 #define	MX51_USB_PLL_DIV_24_MHZ	0x01
 
-static struct pad_desc mx51efikamx_pads[] = {
+static iomux_v3_cfg_t mx51efikamx_pads[] = {
 	/* UART1 */
 	MX51_PAD_UART1_RXD__UART1_RXD,
 	MX51_PAD_UART1_TXD__UART1_TXD,

arch/arm/mach-mx5/eukrea_mbimx51-baseboard.c

@@ -84,7 +84,7 @@ static struct platform_device *devices[] __initdata = {
 	&mbimx51_leds_gpio,
 };
 
-static struct pad_desc mbimx51_pads[] = {
+static iomux_v3_cfg_t mbimx51_pads[] = {
 	/* UART2 */
 	MX51_PAD_UART2_RXD__UART2_RXD,
 	MX51_PAD_UART2_TXD__UART2_TXD,

arch/arm/mach-mx5/eukrea_mbimxsd-baseboard.c

@@ -48,7 +48,7 @@
 #define MBIMXSD_GPIO_3_31 IOMUX_PAD(0x554, 0x16C, 3, 0x0, 0, \
 				MX51_PAD_CTRL_1 | PAD_CTL_PUS_22K_UP)
 
-static struct pad_desc eukrea_mbimxsd_pads[] = {
+static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
 	/* LED */
 	MX51_PAD_NANDF_D10__GPIO_3_30,
 	/* SWITCH */

arch/arm/plat-mxc/include/mach/iomux-v3.h

@@ -44,15 +44,45 @@
  *
  */
 
-struct pad_desc {
+typedef struct deprecated_pad_desc {
 	unsigned mux_ctrl_ofs:12; /* IOMUXC_SW_MUX_CTL_PAD offset */
 	unsigned mux_mode:8;
 	unsigned pad_ctrl_ofs:12; /* IOMUXC_SW_PAD_CTRL offset */
 #define	NO_PAD_CTRL	(1 << 16)
 	unsigned pad_ctrl:17;
 	unsigned select_input_ofs:12; /* IOMUXC_SELECT_INPUT offset */
 	unsigned select_input:3;
-};
+} iomux_v3_cfg_t;
+
+static inline unsigned int MUX_CTRL_OFS(iomux_v3_cfg_t *pad)
+{
+	return pad->mux_ctrl_ofs;
+}
+
+static inline unsigned int MUX_MODE(iomux_v3_cfg_t *pad)
+{
+	return pad->mux_mode;
+}
+
+static inline unsigned int MUX_SELECT_INPUT_OFS(iomux_v3_cfg_t *pad)
+{
+	return pad->select_input_ofs;
+}
+
+static inline unsigned int MUX_SELECT_INPUT(iomux_v3_cfg_t *pad)
+{
+	return pad->select_input;
+}
+
+static inline unsigned int MUX_PAD_CTRL_OFS(iomux_v3_cfg_t *pad)
+{
+	return pad->pad_ctrl_ofs;
+}
+
+static inline unsigned int MUX_PAD_CTRL(iomux_v3_cfg_t *pad)
+{
+	return pad->pad_ctrl;
+}
 
 #define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _select_input_ofs, \
 		_select_input, _pad_ctrl)				\
@@ -107,13 +137,13 @@ struct pad_desc {
 /*
  * setups a single pad in the iomuxer
  */
-int mxc_iomux_v3_setup_pad(struct pad_desc *pad);
+int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t *pad);
 
 /*
  * setups mutliple pads
  * convenient way to call the above function with tables
  */
-int mxc_iomux_v3_setup_multiple_pads(struct pad_desc *pad_list, unsigned count);
+int mxc_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count);
 
 /*
  * Initialise the iomux controller

arch/arm/plat-mxc/iomux-v3.c

@@ -32,26 +32,26 @@
 static void __iomem *base;
 
 /*
- * setups a single pad in the iomuxer
+ * configures a single pad in the iomuxer
  */
-int mxc_iomux_v3_setup_pad(struct pad_desc *pad)
+int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t *pad)
 {
-	if (pad->mux_ctrl_ofs)
-		__raw_writel(pad->mux_mode, base + pad->mux_ctrl_ofs);
+	if (MUX_CTRL_OFS(pad))
+		__raw_writel(MUX_MODE(pad), base + MUX_CTRL_OFS(pad));
 
-	if (pad->select_input_ofs)
-		__raw_writel(pad->select_input,
-				base + pad->select_input_ofs);
+	if (MUX_SELECT_INPUT_OFS(pad))
+		__raw_writel(MUX_SELECT_INPUT(pad),
+			base + MUX_SELECT_INPUT(pad));
 
-	if (!(pad->pad_ctrl & NO_PAD_CTRL) && pad->pad_ctrl_ofs)
-		__raw_writel(pad->pad_ctrl, base + pad->pad_ctrl_ofs);
+	if (!(MUX_PAD_CTRL(pad) & NO_PAD_CTRL) && MUX_PAD_CTRL_OFS(pad))
+		__raw_writel(MUX_PAD_CTRL(pad), base + MUX_PAD_CTRL_OFS(pad));
 	return 0;
 }
 EXPORT_SYMBOL(mxc_iomux_v3_setup_pad);
 
-int mxc_iomux_v3_setup_multiple_pads(struct pad_desc *pad_list, unsigned count)
+int mxc_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count)
 {
-	struct pad_desc *p = pad_list;
+	iomux_v3_cfg_t *p = pad_list;
 	int i;
 	int ret;