serial: lpuart: restructure lpuart driver

Drop CONFIG_LPUART_32B_REG.
Move the register structure to a common file include/fsl_lpuart.h
Define lpuart_serial_platdata structure which includes the reg base and flags.
For 32Bit register access, use lpuart_read32/lpuart_write32 which handles
big/little endian.
For 8Bit register access, still use the orignal code.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by : Stefano Babic <sbabic@denx.de>
Cc: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Cc: York Sun <york.sun@nxp.com>
Cc: Shaohui Xie <Shaohui.Xie@nxp.com>
Cc: Alison Wang <b18965@freescale.com>

arch/arm/include/asm/arch-fsl-layerscape/imx-regs.h

@@ -10,46 +10,4 @@
 
 #define I2C_QUIRK_REG	/* enable 8-bit driver */
 
-#ifdef CONFIG_FSL_LPUART
-#ifdef CONFIG_LPUART_32B_REG
-struct lpuart_fsl {
-	u32 baud;
-	u32 stat;
-	u32 ctrl;
-	u32 data;
-	u32 match;
-	u32 modir;
-	u32 fifo;
-	u32 water;
-};
-#else
-struct lpuart_fsl {
-	u8 ubdh;
-	u8 ubdl;
-	u8 uc1;
-	u8 uc2;
-	u8 us1;
-	u8 us2;
-	u8 uc3;
-	u8 ud;
-	u8 uma1;
-	u8 uma2;
-	u8 uc4;
-	u8 uc5;
-	u8 ued;
-	u8 umodem;
-	u8 uir;
-	u8 reserved;
-	u8 upfifo;
-	u8 ucfifo;
-	u8 usfifo;
-	u8 utwfifo;
-	u8 utcfifo;
-	u8 urwfifo;
-	u8 urcfifo;
-	u8 rsvd[28];
-};
-#endif
-#endif	/* CONFIG_FSL_LPUART */
-
 #endif /* __ASM_ARCH_FSL_LAYERSCAPE_IMX_REGS_H__ */

arch/arm/include/asm/arch-ls102xa/imx-regs.h

@@ -10,44 +10,4 @@
 
 #define I2C_QUIRK_REG	/* enable 8-bit driver */
 
-#ifdef CONFIG_LPUART_32B_REG
-struct lpuart_fsl {
-	u32 baud;
-	u32 stat;
-	u32 ctrl;
-	u32 data;
-	u32 match;
-	u32 modir;
-	u32 fifo;
-	u32 water;
-};
-#else
-struct lpuart_fsl {
-	u8 ubdh;
-	u8 ubdl;
-	u8 uc1;
-	u8 uc2;
-	u8 us1;
-	u8 us2;
-	u8 uc3;
-	u8 ud;
-	u8 uma1;
-	u8 uma2;
-	u8 uc4;
-	u8 uc5;
-	u8 ued;
-	u8 umodem;
-	u8 uir;
-	u8 reserved;
-	u8 upfifo;
-	u8 ucfifo;
-	u8 usfifo;
-	u8 utwfifo;
-	u8 utcfifo;
-	u8 urwfifo;
-	u8 urcfifo;
-	u8 rsvd[28];
-};
-#endif
-
 #endif /* __ASM_ARCH_IMX_REGS_H__ */

arch/arm/include/asm/arch-vf610/clock.h

@@ -22,6 +22,7 @@ enum mxc_clock {
 
 void enable_ocotp_clk(unsigned char enable);
 unsigned int mxc_get_clock(enum mxc_clock clk);
+u32 get_lpuart_clk(void);
 
 #define imx_get_fecclk() mxc_get_clock(MXC_FEC_CLK)
 

arch/arm/include/asm/arch-vf610/imx-regs.h

@@ -429,34 +429,6 @@ struct fuse_bank4_regs {
 	u32 rsvd7[3];
 };
 
-/* UART */
-struct lpuart_fsl {
-	u8 ubdh;
-	u8 ubdl;
-	u8 uc1;
-	u8 uc2;
-	u8 us1;
-	u8 us2;
-	u8 uc3;
-	u8 ud;
-	u8 uma1;
-	u8 uma2;
-	u8 uc4;
-	u8 uc5;
-	u8 ued;
-	u8 umodem;
-	u8 uir;
-	u8 reserved;
-	u8 upfifo;
-	u8 ucfifo;
-	u8 usfifo;
-	u8 utwfifo;
-	u8 utcfifo;
-	u8 urwfifo;
-	u8 urcfifo;
-	u8 rsvd[28];
-};
-
 /* MSCM Interrupt Router */
 struct mscm_ir {
 	u32 ircp0ir;