arm, davinci: Remove the duplication of LPSC functions

The LPSC functions defined in
arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
are replaced by those already defined in
arch/arm/cpu/arm926ejs/davinci/psc.c.

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Heiko Schocher <hs@denx.de>
Cc: Paulraj Sandeep <s-paulraj@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

diff --git a/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c b/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
index a6f0178..490ef8f 100644 (file)
--- a/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
+++ b/arch/arm/cpu/arm926ejs/davinci/da850_lowlevel.c
@@ -153,49 +153,12 @@ int da850_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult)
        return 0;
 }
 
-void da850_lpc_transition(unsigned char pscnum, unsigned char module,
-               unsigned char domain, unsigned char state)
-{
-       struct davinci_psc_regs *reg;
-       dv_reg_p mdstat, mdctl;
-
-       if (pscnum == 0) {
-               reg = davinci_psc0_regs;
-               mdstat = &reg->psc0.mdstat[module];
-               mdctl = &reg->psc0.mdctl[module];
-       } else {
-               reg = davinci_psc1_regs;
-               mdstat = &reg->psc1.mdstat[module];
-               mdctl = &reg->psc1.mdctl[module];
-       }
-
-       /* Wait for any outstanding transition to complete */
-       while ((readl(&reg->ptstat) & (0x00000001 << domain)))
-               ;
-
-       /* If we are already in that state, just return */
-       if ((readl(mdstat) & 0x1F) == state)
-               return;
-
-       /* Perform transition */
-       writel((readl(mdctl) & 0xFFFFFFE0) | state, mdctl);
-       setbits_le32(&reg->ptcmd, (0x00000001 << domain));
-
-       /* Wait for transition to complete */
-       while (readl(&reg->ptstat) & (0x00000001 << domain))
-               ;
-
-       /* Wait and verify the state */
-       while ((readl(mdstat) & 0x1F) != state)
-               ;
-}
-
 int da850_ddr_setup(unsigned int freq)
 {
        unsigned long   tmp;
 
        /* Enable the Clock to DDR2/mDDR */
-       da850_lpc_transition(1, 6, 0, PSC_ENABLE);
+       lpsc_on(DAVINCI_LPSC_DDR_EMIF);
 
        tmp = readl(&davinci_syscfg1_regs->vtpio_ctl);
        if ((tmp & VTP_POWERDWN) == VTP_POWERDWN) {
@@ -244,9 +207,9 @@ int da850_ddr_setup(unsigned int freq)
                &dv_ddr2_regs_ctrl->sdrcr);
 
        /* SyncReset the Clock to EMIF3A SDRAM */
-       da850_lpc_transition(1, 6, 0, PSC_SYNCRESET);
+       lpsc_syncreset(DAVINCI_LPSC_DDR_EMIF);
        /* Enable the Clock to EMIF3A SDRAM */
-       da850_lpc_transition(1, 6, 0, PSC_ENABLE);
+       lpsc_on(DAVINCI_LPSC_DDR_EMIF);
 
        /* disable self refresh */
        clrbits_le32(&dv_ddr2_regs_ctrl->sdrcr, 0xc0000000);
@@ -255,54 +218,6 @@ int da850_ddr_setup(unsigned int freq)
        return 0;
 }
 
-static void da850_set_mdctl(dv_reg_p mdctl)
-{
-       if ((readl(mdctl) & 0x1F) != PSC_ENABLE)
-               writel(((readl(mdctl) & 0xFFFFFFE0) | PSC_ENABLE), mdctl);
-}
-
-void da850_psc_init(void)
-{
-       struct davinci_psc_regs *reg;
-       int i;
-
-       /* PSC 0 domain 0 init */
-       reg = davinci_psc0_regs;
-       while ((readl(&reg->ptstat) & 0x00000001))
-               ;
-
-       for (i = 3; i <= 4 ; i++)
-               da850_set_mdctl(&reg->psc0.mdctl[i]);
-
-       for (i = 7; i <= 12 ; i++)
-               da850_set_mdctl(&reg->psc0.mdctl[i]);
-
-       /* Do Always-On Power Domain Transitions */
-       setbits_le32(&reg->ptcmd, 0x00000001);
-       while (readl(&reg->ptstat) & 0x00000001)
-               ;
-
-       /* PSC1, domain 1 init */
-       reg = davinci_psc1_regs;
-       while ((readl(&reg->ptstat) & 0x00000001))
-               ;
-
-       da850_set_mdctl(&reg->psc1.mdctl[3]);
-       da850_set_mdctl(&reg->psc1.mdctl[6]);
-
-       /* UART1 + UART2 */
-       for (i = 12 ; i <= 13 ; i++)
-               da850_set_mdctl(&reg->psc1.mdctl[i]);
-
-       da850_set_mdctl(&reg->psc1.mdctl[26]);
-       da850_set_mdctl(&reg->psc1.mdctl[31]);
-
-       /* Do Always-On Power Domain Transitions */
-       setbits_le32(&reg->ptcmd, 0x00000001);
-       while (readl(&reg->ptstat) & 0x00000001)
-               ;
-}
-
 void da850_pinmux_ctl(unsigned long offset, unsigned long mask,
        unsigned long value)
 {
@@ -368,9 +283,6 @@ int arch_cpu_init(void)
        dv_maskbits(&davinci_syscfg_regs->suspsrc,
                ((1 << 27) | (1 << 22) | (1 << 20) | (1 << 5) | (1 << 16)));
 
-       /* System PSC setup - enable all */
-       da850_psc_init();
-
        /* Setup Pinmux */
        da850_pinmux_ctl(0, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX0);
        da850_pinmux_ctl(1, 0xFFFFFFFF, CONFIG_SYS_DA850_PINMUX1);
@@ -404,7 +316,7 @@ int arch_cpu_init(void)
        writel(CONFIG_SYS_DA850_CS2CFG, &davinci_emif_regs->ab1cr);
        writel(CONFIG_SYS_DA850_CS3CFG, &davinci_emif_regs->ab2cr);
 
-       da850_lpc_transition(1, 13, 0, PSC_ENABLE);
+       lpsc_on(DAVINCI_LPSC_UART2);
        NS16550_init((NS16550_t)(CONFIG_SYS_NS16550_COM1),
                        CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);