diff options
| -rw-r--r-- | arch/mips/alchemy/common/clocks.c | 19 | ||||
| -rw-r--r-- | arch/mips/alchemy/common/platform.c | 13 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-au1x00/au1000.h | 2 |
3 files changed, 12 insertions, 22 deletions
diff --git a/arch/mips/alchemy/common/clocks.c b/arch/mips/alchemy/common/clocks.c index 0e41416fa682..a4c7cd74cfe4 100644 --- a/arch/mips/alchemy/common/clocks.c +++ b/arch/mips/alchemy/common/clocks.c @@ -38,7 +38,6 @@ #define AU1000_SRC_CLK 12000000 static unsigned int au1x00_clock; /* Hz */ -static unsigned long uart_baud_base; /* * Set the au1000_clock @@ -55,21 +54,6 @@ unsigned int get_au1x00_speed(void) EXPORT_SYMBOL(get_au1x00_speed); /* - * The UART baud base is not known at compile time ... if - * we want to be able to use the same code on different - * speed CPUs. - */ -unsigned long get_au1x00_uart_baud_base(void) -{ - return uart_baud_base; -} - -void set_au1x00_uart_baud_base(unsigned long new_baud_base) -{ - uart_baud_base = new_baud_base; -} - -/* * We read the real processor speed from the PLL. This is important * because it is more accurate than computing it from the 32 KHz * counter, if it exists. If we don't have an accurate processor @@ -95,9 +79,6 @@ unsigned long au1xxx_calc_clock(void) /* On Alchemy CPU:counter ratio is 1:1 */ mips_hpt_frequency = cpu_speed; - /* Equation: Baudrate = CPU / (SD * 2 * CLKDIV * 16) */ - set_au1x00_uart_baud_base(cpu_speed / (2 * - ((alchemy_rdsys(AU1000_SYS_POWERCTRL) & 0x03) + 2) * 16)); set_au1x00_speed(cpu_speed); diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c index fb89d213523b..d77a64f4c78b 100644 --- a/arch/mips/alchemy/common/platform.c +++ b/arch/mips/alchemy/common/platform.c @@ -11,6 +11,7 @@ * warranty of any kind, whether express or implied. */ +#include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/etherdevice.h> #include <linux/init.h> @@ -99,10 +100,20 @@ static struct platform_device au1xx0_uart_device = { static void __init alchemy_setup_uarts(int ctype) { - unsigned int uartclk = get_au1x00_uart_baud_base() * 16; + long uartclk; int s = sizeof(struct plat_serial8250_port); int c = alchemy_get_uarts(ctype); struct plat_serial8250_port *ports; + struct clk *clk = clk_get(NULL, ALCHEMY_PERIPH_CLK); + + if (IS_ERR(clk)) + return; + if (clk_prepare_enable(clk)) { + clk_put(clk); + return; + } + uartclk = clk_get_rate(clk); + clk_put(clk); ports = kzalloc(s * (c + 1), GFP_KERNEL); if (!ports) { diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h index 1f40c0a00e57..e77b920cc9e7 100644 --- a/arch/mips/include/asm/mach-au1x00/au1000.h +++ b/arch/mips/include/asm/mach-au1x00/au1000.h @@ -844,8 +844,6 @@ static inline int alchemy_get_macs(int type) /* arch/mips/au1000/common/clocks.c */ extern void set_au1x00_speed(unsigned int new_freq); extern unsigned int get_au1x00_speed(void); -extern void set_au1x00_uart_baud_base(unsigned long new_baud_base); -extern unsigned long get_au1x00_uart_baud_base(void); extern unsigned long au1xxx_calc_clock(void); /* PM: arch/mips/alchemy/common/sleeper.S, power.c, irq.c */ |