[PATCH v2] arm: lpc32xx: remove leftovers of legacy clock source and provider drivers

[slemieux.tyco@gmail.com (Sylvain Lemieux)]

On Mon, 2016-04-18 at 04:05 +0300, Vladimir Zapolskiy wrote:
> After switching the platform to common clock framework there is no
> more need to keep dead code in arch/arm/mach-lpc32xx, which glued
> legacy clock source and clock provider drivers, remove the leftovers.
> 
> Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>

Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com>

> ---
> v1: http://www.spinics.net/lists/arm-kernel/msg488267.html
> 
> Changes from v1 to v2:
> - no functional changes, rebased on top of v4.6-rc1
> 
>  arch/arm/mach-lpc32xx/common.c | 95 ------------------------------------------
>  arch/arm/mach-lpc32xx/common.h | 23 +---------
>  2 files changed, 1 insertion(+), 117 deletions(-)
> 
> diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c
> index 5b7a1e7..2f6067b 100644
> --- a/arch/arm/mach-lpc32xx/common.c
> +++ b/arch/arm/mach-lpc32xx/common.c
> @@ -17,13 +17,6 @@
>   */
>  
>  #include <linux/init.h>
> -#include <linux/platform_device.h>
> -#include <linux/interrupt.h>
> -#include <linux/irq.h>
> -#include <linux/err.h>
> -#include <linux/i2c.h>
> -#include <linux/i2c-pnx.h>
> -#include <linux/io.h>
>  
>  #include <asm/mach/map.h>
>  #include <asm/system_info.h>
> @@ -44,19 +37,6 @@ void lpc32xx_get_uid(u32 devid[4])
>  }
>  
>  /*
> - * Returns SYSCLK source
> - * 0 = PLL397, 1 = main oscillator
> - */
> -int clk_is_sysclk_mainosc(void)
> -{
> -	if ((__raw_readl(LPC32XX_CLKPWR_SYSCLK_CTRL) &
> -		LPC32XX_CLKPWR_SYSCTRL_SYSCLKMUX) == 0)
> -		return 1;
> -
> -	return 0;
> -}
> -
> -/*
>   * Detects and returns IRAM size for the device variation
>   */
>  #define LPC32XX_IRAM_BANK_SIZE SZ_128K
> @@ -87,81 +67,6 @@ u32 lpc32xx_return_iram_size(void)
>  }
>  EXPORT_SYMBOL_GPL(lpc32xx_return_iram_size);
>  
> -/*
> - * Computes PLL rate from PLL register and input clock
> - */
> -u32 clk_check_pll_setup(u32 ifreq, struct clk_pll_setup *pllsetup)
> -{
> -	u32 ilfreq, p, m, n, fcco, fref, cfreq;
> -	int mode;
> -
> -	/*
> -	 * PLL requirements
> -	 * ifreq must be >= 1MHz and <= 20MHz
> -	 * FCCO must be >= 156MHz and <= 320MHz
> -	 * FREF must be >= 1MHz and <= 27MHz
> -	 * Assume the passed input data is not valid
> -	 */
> -
> -	ilfreq = ifreq;
> -	m = pllsetup->pll_m;
> -	n = pllsetup->pll_n;
> -	p = pllsetup->pll_p;
> -
> -	mode = (pllsetup->cco_bypass_b15 << 2) |
> -		(pllsetup->direct_output_b14 << 1) |
> -	pllsetup->fdbk_div_ctrl_b13;
> -
> -	switch (mode) {
> -	case 0x0: /* Non-integer mode */
> -		cfreq = (m * ilfreq) / (2 * p * n);
> -		fcco = (m * ilfreq) / n;
> -		fref = ilfreq / n;
> -		break;
> -
> -	case 0x1: /* integer mode */
> -		cfreq = (m * ilfreq) / n;
> -		fcco = (m * ilfreq) / (n * 2 * p);
> -		fref = ilfreq / n;
> -		break;
> -
> -	case 0x2:
> -	case 0x3: /* Direct mode */
> -		cfreq = (m * ilfreq) / n;
> -		fcco = cfreq;
> -		fref = ilfreq / n;
> -		break;
> -
> -	case 0x4:
> -	case 0x5: /* Bypass mode */
> -		cfreq = ilfreq / (2 * p);
> -		fcco = 156000000;
> -		fref = 1000000;
> -		break;
> -
> -	case 0x6:
> -	case 0x7: /* Direct bypass mode */
> -	default:
> -		cfreq = ilfreq;
> -		fcco = 156000000;
> -		fref = 1000000;
> -		break;
> -	}
> -
> -	if (fcco < 156000000 || fcco > 320000000)
> -		cfreq = 0;
> -
> -	if (fref < 1000000 || fref > 27000000)
> -		cfreq = 0;
> -
> -	return (u32) cfreq;
> -}
> -
> -u32 clk_get_pclk_div(void)
> -{
> -	return 1 + ((__raw_readl(LPC32XX_CLKPWR_HCLK_DIV) >> 2) & 0x1F);
> -}
> -
>  static struct map_desc lpc32xx_io_desc[] __initdata = {
>  	{
>  		.virtual	= (unsigned long)IO_ADDRESS(LPC32XX_AHB0_START),
> diff --git a/arch/arm/mach-lpc32xx/common.h b/arch/arm/mach-lpc32xx/common.h
> index 9b5ae42..30c9e64 100644
> --- a/arch/arm/mach-lpc32xx/common.h
> +++ b/arch/arm/mach-lpc32xx/common.h
> @@ -19,36 +19,15 @@
>  #ifndef __LPC32XX_COMMON_H
>  #define __LPC32XX_COMMON_H
>  
> -#include <mach/board.h>
> -#include <linux/platform_device.h>
> +#include <linux/init.h>
>  
>  /*
>   * Other arch specific structures and functions
>   */
> -extern void lpc32xx_timer_init(void);
>  extern void __init lpc32xx_init_irq(void);
>  extern void __init lpc32xx_map_io(void);
>  extern void __init lpc32xx_serial_init(void);
>  
> -
> -/*
> - * Structure used for setting up and querying the PLLS
> - */
> -struct clk_pll_setup {
> -	int analog_on;
> -	int cco_bypass_b15;
> -	int direct_output_b14;
> -	int fdbk_div_ctrl_b13;
> -	int pll_p;
> -	int pll_n;
> -	u32 pll_m;
> -};
> -
> -extern int clk_is_sysclk_mainosc(void);
> -extern u32 clk_check_pll_setup(u32 ifreq, struct clk_pll_setup *pllsetup);
> -extern u32 clk_get_pllrate_from_reg(u32 inputclk, u32 regval);
> -extern u32 clk_get_pclk_div(void);
> -
>  /*
>   * Returns the LPC32xx unique 128-bit chip ID
>   */