diff options
Diffstat (limited to 'arch/arm/mach-omap2/serial.c')
| -rw-r--r-- | arch/arm/mach-omap2/serial.c | 69 |
1 files changed, 40 insertions, 29 deletions
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index b1edf78473b6..302da7403a10 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -40,11 +40,12 @@ #include <plat/omap_hwmod.h> #include <plat/omap_device.h> -#include "prm.h" +#include "prm2xxx_3xxx.h" #include "pm.h" -#include "cm.h" +#include "cm2xxx_3xxx.h" #include "prm-regbits-34xx.h" #include "control.h" +#include "mux.h" #define UART_OMAP_NO_EMPTY_FIFO_READ_IP_REV 0x52 #define UART_OMAP_WER 0x17 /* Wake-up enable register */ @@ -106,21 +107,16 @@ struct omap_uart_state { static LIST_HEAD(uart_list); static u8 num_uarts; -/* - * Since these idle/enable hooks are used in the idle path itself - * which has interrupts disabled, use the non-locking versions of - * the hwmod enable/disable functions. - */ static int uart_idle_hwmod(struct omap_device *od) { - _omap_hwmod_idle(od->hwmods[0]); + omap_hwmod_idle(od->hwmods[0]); return 0; } static int uart_enable_hwmod(struct omap_device *od) { - _omap_hwmod_enable(od->hwmods[0]); + omap_hwmod_enable(od->hwmods[0]); return 0; } @@ -169,9 +165,9 @@ static inline void serial_write_reg(struct omap_uart_state *uart, int offset, static inline void __init omap_uart_reset(struct omap_uart_state *uart) { - serial_write_reg(uart, UART_OMAP_MDR1, 0x07); + serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); serial_write_reg(uart, UART_OMAP_SCR, 0x08); - serial_write_reg(uart, UART_OMAP_MDR1, 0x00); + serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_16X_MODE); } #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) @@ -219,7 +215,7 @@ static void omap_uart_save_context(struct omap_uart_state *uart) return; lcr = serial_read_reg(uart, UART_LCR); - serial_write_reg(uart, UART_LCR, 0xBF); + serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); uart->dll = serial_read_reg(uart, UART_DLL); uart->dlh = serial_read_reg(uart, UART_DLM); serial_write_reg(uart, UART_LCR, lcr); @@ -227,7 +223,7 @@ static void omap_uart_save_context(struct omap_uart_state *uart) uart->sysc = serial_read_reg(uart, UART_OMAP_SYSC); uart->scr = serial_read_reg(uart, UART_OMAP_SCR); uart->wer = serial_read_reg(uart, UART_OMAP_WER); - serial_write_reg(uart, UART_LCR, 0x80); + serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_A); uart->mcr = serial_read_reg(uart, UART_MCR); serial_write_reg(uart, UART_LCR, lcr); @@ -247,32 +243,35 @@ static void omap_uart_restore_context(struct omap_uart_state *uart) uart->context_valid = 0; if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS) - omap_uart_mdr1_errataset(uart, 0x07, 0xA0); + omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_DISABLE, 0xA0); else - serial_write_reg(uart, UART_OMAP_MDR1, 0x7); - serial_write_reg(uart, UART_LCR, 0xBF); /* Config B mode */ + serial_write_reg(uart, UART_OMAP_MDR1, UART_OMAP_MDR1_DISABLE); + + serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); efr = serial_read_reg(uart, UART_EFR); serial_write_reg(uart, UART_EFR, UART_EFR_ECB); serial_write_reg(uart, UART_LCR, 0x0); /* Operational mode */ serial_write_reg(uart, UART_IER, 0x0); - serial_write_reg(uart, UART_LCR, 0xBF); /* Config B mode */ + serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); serial_write_reg(uart, UART_DLL, uart->dll); serial_write_reg(uart, UART_DLM, uart->dlh); serial_write_reg(uart, UART_LCR, 0x0); /* Operational mode */ serial_write_reg(uart, UART_IER, uart->ier); - serial_write_reg(uart, UART_LCR, 0x80); + serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_A); serial_write_reg(uart, UART_MCR, uart->mcr); - serial_write_reg(uart, UART_LCR, 0xBF); /* Config B mode */ + serial_write_reg(uart, UART_LCR, UART_LCR_CONF_MODE_B); serial_write_reg(uart, UART_EFR, efr); serial_write_reg(uart, UART_LCR, UART_LCR_WLEN8); serial_write_reg(uart, UART_OMAP_SCR, uart->scr); serial_write_reg(uart, UART_OMAP_WER, uart->wer); serial_write_reg(uart, UART_OMAP_SYSC, uart->sysc); + if (uart->errata & UART_ERRATA_i202_MDR1_ACCESS) - omap_uart_mdr1_errataset(uart, 0x00, 0xA1); + omap_uart_mdr1_errataset(uart, UART_OMAP_MDR1_16X_MODE, 0xA1); else /* UART 16x mode */ - serial_write_reg(uart, UART_OMAP_MDR1, 0x00); + serial_write_reg(uart, UART_OMAP_MDR1, + UART_OMAP_MDR1_16X_MODE); } #else static inline void omap_uart_save_context(struct omap_uart_state *uart) {} @@ -492,6 +491,7 @@ static void omap_uart_idle_init(struct omap_uart_state *uart) u32 wk_mask = 0; u32 padconf = 0; + /* XXX These PRM accesses do not belong here */ uart->wk_en = OMAP34XX_PRM_REGADDR(mod, PM_WKEN1); uart->wk_st = OMAP34XX_PRM_REGADDR(mod, PM_WKST1); switch (uart->num) { @@ -695,16 +695,16 @@ void __init omap_serial_early_init(void) /** * omap_serial_init_port() - initialize single serial port - * @port: serial port number (0-3) + * @bdata: port specific board data pointer * - * This function initialies serial driver for given @port only. + * This function initialies serial driver for given port only. * Platforms can call this function instead of omap_serial_init() * if they don't plan to use all available UARTs as serial ports. * * Don't mix calls to omap_serial_init_port() and omap_serial_init(), * use only one of the two. */ -void __init omap_serial_init_port(int port) +void __init omap_serial_init_port(struct omap_board_data *bdata) { struct omap_uart_state *uart; struct omap_hwmod *oh; @@ -722,13 +722,15 @@ void __init omap_serial_init_port(int port) struct omap_uart_port_info omap_up; #endif - if (WARN_ON(port < 0)) + if (WARN_ON(!bdata)) + return; + if (WARN_ON(bdata->id < 0)) return; - if (WARN_ON(port >= num_uarts)) + if (WARN_ON(bdata->id >= num_uarts)) return; list_for_each_entry(uart, &uart_list, node) - if (port == uart->num) + if (bdata->id == uart->num) break; oh = uart->oh; @@ -800,6 +802,8 @@ void __init omap_serial_init_port(int port) WARN(IS_ERR(od), "Could not build omap_device for %s: %s.\n", name, oh->name); + oh->mux = omap_hwmod_mux_init(bdata->pads, bdata->pads_cnt); + uart->irq = oh->mpu_irqs[0].irq; uart->regshift = 2; uart->mapbase = oh->slaves[0]->addr->pa_start; @@ -857,7 +861,14 @@ void __init omap_serial_init_port(int port) void __init omap_serial_init(void) { struct omap_uart_state *uart; + struct omap_board_data bdata; - list_for_each_entry(uart, &uart_list, node) - omap_serial_init_port(uart->num); + list_for_each_entry(uart, &uart_list, node) { + bdata.id = uart->num; + bdata.flags = 0; + bdata.pads = NULL; + bdata.pads_cnt = 0; + omap_serial_init_port(&bdata); + + } } |