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OpenCloudOS-Kernel/drivers/clk/clk-npcm7xx.c

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clk: npcm7xx: add clock controller Nuvoton Poleg BMC NPCM7XX contains an integrated clock controller, which generates and supplies clocks to all modules within the BMC. Signed-off-by: Tali Perry <tali.perry1@gmail.com> [sboyd@kernel.org: Drop clk_get()s, cleanup whitespace, drop unused includes, fix static checker warnings] Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-26 18:16:26 +08:00
// SPDX-License-Identifier: GPL-2.0
/*
* Nuvoton NPCM7xx Clock Generator
* All the clocks are initialized by the bootloader, so this driver allow only
* reading of current settings directly from the hardware.
*
* Copyright (C) 2018 Nuvoton Technologies tali.perry@nuvoton.com
*/
#include <linux/module.h>
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/bitfield.h>
#include <dt-bindings/clock/nuvoton,npcm7xx-clock.h>
struct npcm7xx_clk_pll {
struct clk_hw hw;
void __iomem *pllcon;
u8 flags;
};
#define to_npcm7xx_clk_pll(_hw) container_of(_hw, struct npcm7xx_clk_pll, hw)
#define PLLCON_LOKI BIT(31)
#define PLLCON_LOKS BIT(30)
#define PLLCON_FBDV GENMASK(27, 16)
#define PLLCON_OTDV2 GENMASK(15, 13)
#define PLLCON_PWDEN BIT(12)
#define PLLCON_OTDV1 GENMASK(10, 8)
#define PLLCON_INDV GENMASK(5, 0)
static unsigned long npcm7xx_clk_pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct npcm7xx_clk_pll *pll = to_npcm7xx_clk_pll(hw);
unsigned long fbdv, indv, otdv1, otdv2;
unsigned int val;
u64 ret;
if (parent_rate == 0) {
pr_err("%s: parent rate is zero", __func__);
return 0;
}
val = readl_relaxed(pll->pllcon);
indv = FIELD_GET(PLLCON_INDV, val);
fbdv = FIELD_GET(PLLCON_FBDV, val);
otdv1 = FIELD_GET(PLLCON_OTDV1, val);
otdv2 = FIELD_GET(PLLCON_OTDV2, val);
ret = (u64)parent_rate * fbdv;
do_div(ret, indv * otdv1 * otdv2);
return ret;
}
static const struct clk_ops npcm7xx_clk_pll_ops = {
.recalc_rate = npcm7xx_clk_pll_recalc_rate,
};
static struct clk_hw *
npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
const char *parent_name, unsigned long flags)
{
struct npcm7xx_clk_pll *pll;
struct clk_init_data init;
struct clk_hw *hw;
int ret;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll)
return ERR_PTR(-ENOMEM);
pr_debug("%s reg, name=%s, p=%s\n", __func__, name, parent_name);
init.name = name;
init.ops = &npcm7xx_clk_pll_ops;
init.parent_names = &parent_name;
init.num_parents = 1;
init.flags = flags;
pll->pllcon = pllcon;
pll->hw.init = &init;
hw = &pll->hw;
ret = clk_hw_register(NULL, hw);
if (ret) {
kfree(pll);
hw = ERR_PTR(ret);
}
return hw;
}
#define NPCM7XX_CLKEN1 (0x00)
#define NPCM7XX_CLKEN2 (0x28)
#define NPCM7XX_CLKEN3 (0x30)
#define NPCM7XX_CLKSEL (0x04)
#define NPCM7XX_CLKDIV1 (0x08)
#define NPCM7XX_CLKDIV2 (0x2C)
#define NPCM7XX_CLKDIV3 (0x58)
#define NPCM7XX_PLLCON0 (0x0C)
#define NPCM7XX_PLLCON1 (0x10)
#define NPCM7XX_PLLCON2 (0x54)
#define NPCM7XX_SWRSTR (0x14)
#define NPCM7XX_IRQWAKECON (0x18)
#define NPCM7XX_IRQWAKEFLAG (0x1C)
#define NPCM7XX_IPSRST1 (0x20)
#define NPCM7XX_IPSRST2 (0x24)
#define NPCM7XX_IPSRST3 (0x34)
#define NPCM7XX_WD0RCR (0x38)
#define NPCM7XX_WD1RCR (0x3C)
#define NPCM7XX_WD2RCR (0x40)
#define NPCM7XX_SWRSTC1 (0x44)
#define NPCM7XX_SWRSTC2 (0x48)
#define NPCM7XX_SWRSTC3 (0x4C)
#define NPCM7XX_SWRSTC4 (0x50)
#define NPCM7XX_CORSTC (0x5C)
#define NPCM7XX_PLLCONG (0x60)
#define NPCM7XX_AHBCKFI (0x64)
#define NPCM7XX_SECCNT (0x68)
#define NPCM7XX_CNTR25M (0x6C)
struct npcm7xx_clk_gate_data {
u32 reg;
u8 bit_idx;
const char *name;
const char *parent_name;
unsigned long flags;
/*
* If this clock is exported via DT, set onecell_idx to constant
* defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
* this specific clock. Otherwise, set to -1.
*/
int onecell_idx;
};
struct npcm7xx_clk_mux_data {
u8 shift;
u8 mask;
u32 *table;
const char *name;
const char * const *parent_names;
u8 num_parents;
unsigned long flags;
/*
* If this clock is exported via DT, set onecell_idx to constant
* defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
* this specific clock. Otherwise, set to -1.
*/
int onecell_idx;
};
struct npcm7xx_clk_div_fixed_data {
u8 mult;
u8 div;
const char *name;
const char *parent_name;
u8 clk_divider_flags;
/*
* If this clock is exported via DT, set onecell_idx to constant
* defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
* this specific clock. Otherwise, set to -1.
*/
int onecell_idx;
};
struct npcm7xx_clk_div_data {
u32 reg;
u8 shift;
u8 width;
const char *name;
const char *parent_name;
u8 clk_divider_flags;
unsigned long flags;
/*
* If this clock is exported via DT, set onecell_idx to constant
* defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
* this specific clock. Otherwise, set to -1.
*/
int onecell_idx;
};
struct npcm7xx_clk_pll_data {
u32 reg;
const char *name;
const char *parent_name;
unsigned long flags;
/*
* If this clock is exported via DT, set onecell_idx to constant
* defined in include/dt-bindings/clock/nuvoton, NPCM7XX-clock.h for
* this specific clock. Otherwise, set to -1.
*/
int onecell_idx;
};
/*
* Single copy of strings used to refer to clocks within this driver indexed by
* above enum.
*/
#define NPCM7XX_CLK_S_REFCLK "refclk"
#define NPCM7XX_CLK_S_SYSBYPCK "sysbypck"
#define NPCM7XX_CLK_S_MCBYPCK "mcbypck"
#define NPCM7XX_CLK_S_GFXBYPCK "gfxbypck"
#define NPCM7XX_CLK_S_PLL0 "pll0"
#define NPCM7XX_CLK_S_PLL1 "pll1"
#define NPCM7XX_CLK_S_PLL1_DIV2 "pll1_div2"
#define NPCM7XX_CLK_S_PLL2 "pll2"
#define NPCM7XX_CLK_S_PLL_GFX "pll_gfx"
#define NPCM7XX_CLK_S_PLL2_DIV2 "pll2_div2"
#define NPCM7XX_CLK_S_PIX_MUX "gfx_pixel"
#define NPCM7XX_CLK_S_GPRFSEL_MUX "gprfsel_mux"
#define NPCM7XX_CLK_S_MC_MUX "mc_phy"
#define NPCM7XX_CLK_S_CPU_MUX "cpu" /*AKA system clock.*/
#define NPCM7XX_CLK_S_MC "mc"
#define NPCM7XX_CLK_S_AXI "axi" /*AKA CLK2*/
#define NPCM7XX_CLK_S_AHB "ahb" /*AKA CLK4*/
#define NPCM7XX_CLK_S_CLKOUT_MUX "clkout_mux"
#define NPCM7XX_CLK_S_UART_MUX "uart_mux"
#define NPCM7XX_CLK_S_TIM_MUX "timer_mux"
#define NPCM7XX_CLK_S_SD_MUX "sd_mux"
#define NPCM7XX_CLK_S_GFXM_MUX "gfxm_mux"
#define NPCM7XX_CLK_S_SU_MUX "serial_usb_mux"
#define NPCM7XX_CLK_S_DVC_MUX "dvc_mux"
#define NPCM7XX_CLK_S_GFX_MUX "gfx_mux"
#define NPCM7XX_CLK_S_GFX_PIXEL "gfx_pixel"
#define NPCM7XX_CLK_S_SPI0 "spi0"
#define NPCM7XX_CLK_S_SPI3 "spi3"
#define NPCM7XX_CLK_S_SPIX "spix"
#define NPCM7XX_CLK_S_APB1 "apb1"
#define NPCM7XX_CLK_S_APB2 "apb2"
#define NPCM7XX_CLK_S_APB3 "apb3"
#define NPCM7XX_CLK_S_APB4 "apb4"
#define NPCM7XX_CLK_S_APB5 "apb5"
#define NPCM7XX_CLK_S_TOCK "tock"
#define NPCM7XX_CLK_S_CLKOUT "clkout"
#define NPCM7XX_CLK_S_UART "uart"
#define NPCM7XX_CLK_S_TIMER "timer"
#define NPCM7XX_CLK_S_MMC "mmc"
#define NPCM7XX_CLK_S_SDHC "sdhc"
#define NPCM7XX_CLK_S_ADC "adc"
#define NPCM7XX_CLK_S_GFX "gfx0_gfx1_mem"
#define NPCM7XX_CLK_S_USBIF "serial_usbif"
#define NPCM7XX_CLK_S_USB_HOST "usb_host"
#define NPCM7XX_CLK_S_USB_BRIDGE "usb_bridge"
#define NPCM7XX_CLK_S_PCI "pci"
static u32 pll_mux_table[] = {0, 1, 2, 3};
static const char * const pll_mux_parents[] __initconst = {
NPCM7XX_CLK_S_PLL0,
NPCM7XX_CLK_S_PLL1_DIV2,
NPCM7XX_CLK_S_REFCLK,
NPCM7XX_CLK_S_PLL2_DIV2,
};
static u32 cpuck_mux_table[] = {0, 1, 2, 3};
static const char * const cpuck_mux_parents[] __initconst = {
NPCM7XX_CLK_S_PLL0,
NPCM7XX_CLK_S_PLL1_DIV2,
NPCM7XX_CLK_S_REFCLK,
NPCM7XX_CLK_S_SYSBYPCK,
};
static u32 pixcksel_mux_table[] = {0, 2};
static const char * const pixcksel_mux_parents[] __initconst = {
NPCM7XX_CLK_S_PLL_GFX,
NPCM7XX_CLK_S_REFCLK,
};
static u32 sucksel_mux_table[] = {2, 3};
static const char * const sucksel_mux_parents[] __initconst = {
NPCM7XX_CLK_S_REFCLK,
NPCM7XX_CLK_S_PLL2_DIV2,
};
static u32 mccksel_mux_table[] = {0, 2, 3};
static const char * const mccksel_mux_parents[] __initconst = {
NPCM7XX_CLK_S_PLL1_DIV2,
NPCM7XX_CLK_S_REFCLK,
NPCM7XX_CLK_S_MCBYPCK,
};
static u32 clkoutsel_mux_table[] = {0, 1, 2, 3, 4};
static const char * const clkoutsel_mux_parents[] __initconst = {
NPCM7XX_CLK_S_PLL0,
NPCM7XX_CLK_S_PLL1_DIV2,
NPCM7XX_CLK_S_REFCLK,
NPCM7XX_CLK_S_PLL_GFX, // divided by 2
NPCM7XX_CLK_S_PLL2_DIV2,
};
static u32 gfxmsel_mux_table[] = {2, 3};
static const char * const gfxmsel_mux_parents[] __initconst = {
NPCM7XX_CLK_S_REFCLK,
NPCM7XX_CLK_S_PLL2_DIV2,
};
static u32 dvcssel_mux_table[] = {2, 3};
static const char * const dvcssel_mux_parents[] __initconst = {
NPCM7XX_CLK_S_REFCLK,
NPCM7XX_CLK_S_PLL2,
};
static const struct npcm7xx_clk_pll_data npcm7xx_plls[] __initconst = {
{NPCM7XX_PLLCON0, NPCM7XX_CLK_S_PLL0, NPCM7XX_CLK_S_REFCLK, 0, -1},
{NPCM7XX_PLLCON1, NPCM7XX_CLK_S_PLL1,
NPCM7XX_CLK_S_REFCLK, 0, -1},
{NPCM7XX_PLLCON2, NPCM7XX_CLK_S_PLL2,
NPCM7XX_CLK_S_REFCLK, 0, -1},
{NPCM7XX_PLLCONG, NPCM7XX_CLK_S_PLL_GFX,
NPCM7XX_CLK_S_REFCLK, 0, -1},
};
static const struct npcm7xx_clk_mux_data npcm7xx_muxes[] __initconst = {
{0, GENMASK(1, 0), cpuck_mux_table, NPCM7XX_CLK_S_CPU_MUX,
cpuck_mux_parents, ARRAY_SIZE(cpuck_mux_parents), CLK_IS_CRITICAL,
NPCM7XX_CLK_CPU},
{4, GENMASK(1, 0), pixcksel_mux_table, NPCM7XX_CLK_S_PIX_MUX,
pixcksel_mux_parents, ARRAY_SIZE(pixcksel_mux_parents), 0,
NPCM7XX_CLK_GFX_PIXEL},
{6, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_SD_MUX,
pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},
{8, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_UART_MUX,
pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},
{10, GENMASK(1, 0), sucksel_mux_table, NPCM7XX_CLK_S_SU_MUX,
sucksel_mux_parents, ARRAY_SIZE(sucksel_mux_parents), 0, -1},
{12, GENMASK(1, 0), mccksel_mux_table, NPCM7XX_CLK_S_MC_MUX,
mccksel_mux_parents, ARRAY_SIZE(mccksel_mux_parents), 0, -1},
{14, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_TIM_MUX,
pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},
{16, GENMASK(1, 0), pll_mux_table, NPCM7XX_CLK_S_GFX_MUX,
pll_mux_parents, ARRAY_SIZE(pll_mux_parents), 0, -1},
{18, GENMASK(2, 0), clkoutsel_mux_table, NPCM7XX_CLK_S_CLKOUT_MUX,
clkoutsel_mux_parents, ARRAY_SIZE(clkoutsel_mux_parents), 0, -1},
{21, GENMASK(1, 0), gfxmsel_mux_table, NPCM7XX_CLK_S_GFXM_MUX,
gfxmsel_mux_parents, ARRAY_SIZE(gfxmsel_mux_parents), 0, -1},
{23, GENMASK(1, 0), dvcssel_mux_table, NPCM7XX_CLK_S_DVC_MUX,
dvcssel_mux_parents, ARRAY_SIZE(dvcssel_mux_parents), 0, -1},
};
/* fixed ratio dividers (no register): */
static const struct npcm7xx_clk_div_fixed_data npcm7xx_divs_fx[] __initconst = {
{ 1, 2, NPCM7XX_CLK_S_MC, NPCM7XX_CLK_S_MC_MUX, 0, NPCM7XX_CLK_MC},
{ 1, 2, NPCM7XX_CLK_S_PLL1_DIV2, NPCM7XX_CLK_S_PLL1, 0, -1},
{ 1, 2, NPCM7XX_CLK_S_PLL2_DIV2, NPCM7XX_CLK_S_PLL2, 0, -1},
};
/* configurable dividers: */
static const struct npcm7xx_clk_div_data npcm7xx_divs[] __initconst = {
{NPCM7XX_CLKDIV1, 28, 3, NPCM7XX_CLK_S_ADC,
NPCM7XX_CLK_S_TIMER, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_ADC},
/*30-28 ADCCKDIV*/
{NPCM7XX_CLKDIV1, 26, 2, NPCM7XX_CLK_S_AHB,
NPCM7XX_CLK_S_AXI, 0, CLK_IS_CRITICAL, NPCM7XX_CLK_AHB},
/*27-26 CLK4DIV*/
{NPCM7XX_CLKDIV1, 21, 5, NPCM7XX_CLK_S_TIMER,
NPCM7XX_CLK_S_TIM_MUX, 0, 0, NPCM7XX_CLK_TIMER},
/*25-21 TIMCKDIV*/
{NPCM7XX_CLKDIV1, 16, 5, NPCM7XX_CLK_S_UART,
NPCM7XX_CLK_S_UART_MUX, 0, 0, NPCM7XX_CLK_UART},
/*20-16 UARTDIV*/
{NPCM7XX_CLKDIV1, 11, 5, NPCM7XX_CLK_S_MMC,
NPCM7XX_CLK_S_SD_MUX, 0, 0, NPCM7XX_CLK_MMC},
/*15-11 MMCCKDIV*/
{NPCM7XX_CLKDIV1, 6, 5, NPCM7XX_CLK_S_SPI3,
NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPI3},
/*10-6 AHB3CKDIV*/
{NPCM7XX_CLKDIV1, 2, 4, NPCM7XX_CLK_S_PCI,
NPCM7XX_CLK_S_GFX_MUX, 0, 0, NPCM7XX_CLK_PCI},
/*5-2 PCICKDIV*/
{NPCM7XX_CLKDIV1, 0, 1, NPCM7XX_CLK_S_AXI,
NPCM7XX_CLK_S_CPU_MUX, CLK_DIVIDER_POWER_OF_TWO, CLK_IS_CRITICAL,
NPCM7XX_CLK_AXI},/*0 CLK2DIV*/
{NPCM7XX_CLKDIV2, 30, 2, NPCM7XX_CLK_S_APB4,
NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB4},
/*31-30 APB4CKDIV*/
{NPCM7XX_CLKDIV2, 28, 2, NPCM7XX_CLK_S_APB3,
NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB3},
/*29-28 APB3CKDIV*/
{NPCM7XX_CLKDIV2, 26, 2, NPCM7XX_CLK_S_APB2,
NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB2},
/*27-26 APB2CKDIV*/
{NPCM7XX_CLKDIV2, 24, 2, NPCM7XX_CLK_S_APB1,
NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB1},
/*25-24 APB1CKDIV*/
{NPCM7XX_CLKDIV2, 22, 2, NPCM7XX_CLK_S_APB5,
NPCM7XX_CLK_S_AHB, CLK_DIVIDER_POWER_OF_TWO, 0, NPCM7XX_CLK_APB5},
/*23-22 APB5CKDIV*/
{NPCM7XX_CLKDIV2, 16, 5, NPCM7XX_CLK_S_CLKOUT,
NPCM7XX_CLK_S_CLKOUT_MUX, 0, 0, NPCM7XX_CLK_CLKOUT},
/*20-16 CLKOUTDIV*/
{NPCM7XX_CLKDIV2, 13, 3, NPCM7XX_CLK_S_GFX,
NPCM7XX_CLK_S_GFX_MUX, 0, 0, NPCM7XX_CLK_GFX},
/*15-13 GFXCKDIV*/
{NPCM7XX_CLKDIV2, 8, 5, NPCM7XX_CLK_S_USB_BRIDGE,
NPCM7XX_CLK_S_SU_MUX, 0, 0, NPCM7XX_CLK_SU},
/*12-8 SUCKDIV*/
{NPCM7XX_CLKDIV2, 4, 4, NPCM7XX_CLK_S_USB_HOST,
NPCM7XX_CLK_S_SU_MUX, 0, 0, NPCM7XX_CLK_SU48},
/*7-4 SU48CKDIV*/
{NPCM7XX_CLKDIV2, 0, 4, NPCM7XX_CLK_S_SDHC,
NPCM7XX_CLK_S_SD_MUX, 0, 0, NPCM7XX_CLK_SDHC}
,/*3-0 SD1CKDIV*/
{NPCM7XX_CLKDIV3, 6, 5, NPCM7XX_CLK_S_SPI0,
NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPI0},
/*10-6 SPI0CKDV*/
{NPCM7XX_CLKDIV3, 1, 5, NPCM7XX_CLK_S_SPIX,
NPCM7XX_CLK_S_AHB, 0, 0, NPCM7XX_CLK_SPIX},
/*5-1 SPIXCKDV*/
};
static const struct npcm7xx_clk_gate_data npcm7xx_gates[] __initconst = {
{NPCM7XX_CLKEN1, 31, "smb1-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 30, "smb0-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 29, "smb7-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 28, "smb6-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 27, "adc-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN1, 26, "wdt-gate", NPCM7XX_CLK_S_TIMER, 0},
{NPCM7XX_CLKEN1, 25, "usbdev3-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 24, "usbdev6-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 23, "usbdev5-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 22, "usbdev4-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 21, "emc2-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 20, "timer5_9-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN1, 19, "timer0_4-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN1, 18, "pwmm0-gate", NPCM7XX_CLK_S_APB3, 0},
{NPCM7XX_CLKEN1, 17, "huart-gate", NPCM7XX_CLK_S_UART, 0},
{NPCM7XX_CLKEN1, 16, "smb5-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 15, "smb4-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 14, "smb3-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 13, "smb2-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 12, "mc-gate", NPCM7XX_CLK_S_MC, 0},
{NPCM7XX_CLKEN1, 11, "uart01-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN1, 10, "aes-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 9, "peci-gate", NPCM7XX_CLK_S_APB3, 0},
{NPCM7XX_CLKEN1, 8, "usbdev2-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 7, "uart23-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN1, 6, "emc1-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 5, "usbdev1-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 4, "shm-gate", NPCM7XX_CLK_S_AHB, 0},
/* bit 3 is reserved */
{NPCM7XX_CLKEN1, 2, "kcs-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN1, 1, "spi3-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN1, 0, "spi0-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 31, "cp-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 30, "tock-gate", NPCM7XX_CLK_S_TOCK, 0},
/* bit 29 is reserved */
{NPCM7XX_CLKEN2, 28, "gmac1-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 27, "usbif-gate", NPCM7XX_CLK_S_USBIF, 0},
{NPCM7XX_CLKEN2, 26, "usbhost-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 25, "gmac2-gate", NPCM7XX_CLK_S_AHB, 0},
/* bit 24 is reserved */
{NPCM7XX_CLKEN2, 23, "pspi2-gate", NPCM7XX_CLK_S_APB5, 0},
{NPCM7XX_CLKEN2, 22, "pspi1-gate", NPCM7XX_CLK_S_APB5, 0},
{NPCM7XX_CLKEN2, 21, "3des-gate", NPCM7XX_CLK_S_AHB, 0},
/* bit 20 is reserved */
{NPCM7XX_CLKEN2, 19, "siox2-gate", NPCM7XX_CLK_S_APB3, 0},
{NPCM7XX_CLKEN2, 18, "siox1-gate", NPCM7XX_CLK_S_APB3, 0},
/* bit 17 is reserved */
{NPCM7XX_CLKEN2, 16, "fuse-gate", NPCM7XX_CLK_S_APB4, 0},
/* bit 15 is reserved */
{NPCM7XX_CLKEN2, 14, "vcd-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 13, "ece-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 12, "vdma-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 11, "ahbpcibrg-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 10, "gfxsys-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN2, 9, "sdhc-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 8, "mmc-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN2, 7, "mft7-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN2, 6, "mft6-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN2, 5, "mft5-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN2, 4, "mft4-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN2, 3, "mft3-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN2, 2, "mft2-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN2, 1, "mft1-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN2, 0, "mft0-gate", NPCM7XX_CLK_S_APB4, 0},
{NPCM7XX_CLKEN3, 31, "gpiom7-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 30, "gpiom6-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 29, "gpiom5-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 28, "gpiom4-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 27, "gpiom3-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 26, "gpiom2-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 25, "gpiom1-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 24, "gpiom0-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 23, "espi-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 22, "smb11-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 21, "smb10-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 20, "smb9-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 19, "smb8-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 18, "smb15-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 17, "rng-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 16, "timer10_14-gate", NPCM7XX_CLK_S_APB1, 0},
{NPCM7XX_CLKEN3, 15, "pcirc-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 14, "sececc-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 13, "sha-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 12, "smb14-gate", NPCM7XX_CLK_S_APB2, 0},
/* bit 11 is reserved */
/* bit 10 is reserved */
{NPCM7XX_CLKEN3, 9, "pcimbx-gate", NPCM7XX_CLK_S_AHB, 0},
/* bit 8 is reserved */
{NPCM7XX_CLKEN3, 7, "usbdev9-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 6, "usbdev8-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 5, "usbdev7-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 4, "usbdev0-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 3, "smb13-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 2, "spix-gate", NPCM7XX_CLK_S_AHB, 0},
{NPCM7XX_CLKEN3, 1, "smb12-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN3, 0, "pwmm1-gate", NPCM7XX_CLK_S_APB3, 0},
};
static DEFINE_SPINLOCK(npcm7xx_clk_lock);
static void __init npcm7xx_clk_init(struct device_node *clk_np)
{
struct clk_hw_onecell_data *npcm7xx_clk_data;
void __iomem *clk_base;
struct resource res;
struct clk_hw *hw;
int ret;
int i;
ret = of_address_to_resource(clk_np, 0, &res);
if (ret) {
pr_err("%s: failed to get resource, ret %d\n", clk_np->name,
ret);
return;
}
clk_base = ioremap(res.start, resource_size(&res));
clk: npcm7xx: fix return value check in npcm7xx_clk_init() In case of error, the function ioremap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Fixes: fcfd14369856 ("clk: npcm7xx: add clock controller") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-04-26 19:21:08 +08:00
if (!clk_base)
clk: npcm7xx: add clock controller Nuvoton Poleg BMC NPCM7XX contains an integrated clock controller, which generates and supplies clocks to all modules within the BMC. Signed-off-by: Tali Perry <tali.perry1@gmail.com> [sboyd@kernel.org: Drop clk_get()s, cleanup whitespace, drop unused includes, fix static checker warnings] Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-26 18:16:26 +08:00
goto npcm7xx_init_error;
npcm7xx_clk_data = kzalloc(sizeof(*npcm7xx_clk_data->hws) *
NPCM7XX_NUM_CLOCKS + sizeof(npcm7xx_clk_data), GFP_KERNEL);
if (!npcm7xx_clk_data)
goto npcm7xx_init_np_err;
npcm7xx_clk_data->num = NPCM7XX_NUM_CLOCKS;
for (i = 0; i < NPCM7XX_NUM_CLOCKS; i++)
npcm7xx_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);
/* Register plls */
for (i = 0; i < ARRAY_SIZE(npcm7xx_plls); i++) {
const struct npcm7xx_clk_pll_data *pll_data = &npcm7xx_plls[i];
hw = npcm7xx_clk_register_pll(clk_base + pll_data->reg,
pll_data->name, pll_data->parent_name, pll_data->flags);
if (IS_ERR(hw)) {
pr_err("npcm7xx_clk: Can't register pll\n");
goto npcm7xx_init_fail;
}
if (pll_data->onecell_idx >= 0)
npcm7xx_clk_data->hws[pll_data->onecell_idx] = hw;
}
/* Register fixed dividers */
hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL1_DIV2,
NPCM7XX_CLK_S_PLL1, 0, 1, 2);
if (IS_ERR(hw)) {
pr_err("npcm7xx_clk: Can't register fixed div\n");
goto npcm7xx_init_fail;
}
hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL2_DIV2,
NPCM7XX_CLK_S_PLL2, 0, 1, 2);
if (IS_ERR(hw)) {
pr_err("npcm7xx_clk: Can't register div2\n");
goto npcm7xx_init_fail;
}
/* Register muxes */
for (i = 0; i < ARRAY_SIZE(npcm7xx_muxes); i++) {
const struct npcm7xx_clk_mux_data *mux_data = &npcm7xx_muxes[i];
hw = clk_hw_register_mux_table(NULL,
mux_data->name,
mux_data->parent_names, mux_data->num_parents,
mux_data->flags, clk_base + NPCM7XX_CLKSEL,
mux_data->shift, mux_data->mask, 0,
mux_data->table, &npcm7xx_clk_lock);
if (IS_ERR(hw)) {
pr_err("npcm7xx_clk: Can't register mux\n");
goto npcm7xx_init_fail;
}
if (mux_data->onecell_idx >= 0)
npcm7xx_clk_data->hws[mux_data->onecell_idx] = hw;
}
/* Register clock dividers specified in npcm7xx_divs */
for (i = 0; i < ARRAY_SIZE(npcm7xx_divs); i++) {
const struct npcm7xx_clk_div_data *div_data = &npcm7xx_divs[i];
hw = clk_hw_register_divider(NULL, div_data->name,
div_data->parent_name,
div_data->flags,
clk_base + div_data->reg,
div_data->shift, div_data->width,
div_data->clk_divider_flags, &npcm7xx_clk_lock);
if (IS_ERR(hw)) {
pr_err("npcm7xx_clk: Can't register div table\n");
goto npcm7xx_init_fail;
}
if (div_data->onecell_idx >= 0)
npcm7xx_clk_data->hws[div_data->onecell_idx] = hw;
}
ret = of_clk_add_hw_provider(clk_np, of_clk_hw_onecell_get,
npcm7xx_clk_data);
if (ret)
pr_err("failed to add DT provider: %d\n", ret);
of_node_put(clk_np);
return;
npcm7xx_init_fail:
kfree(npcm7xx_clk_data->hws);
npcm7xx_init_np_err:
iounmap(clk_base);
npcm7xx_init_error:
of_node_put(clk_np);
}
CLK_OF_DECLARE(npcm7xx_clk_init, "nuvoton,npcm750-clk", npcm7xx_clk_init);